gb rockbreaker manual

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8/19/2019 GB RockBreaker Manual http://slidepdf.com/reader/full/gb-rockbreaker-manual 1/84 OPERATING & MAINTENANCE MANUAL & PART LIST T-SERIES GB150 / GB8AF / GB8F / GB9F / GB11F / GB14F F-SERIES GB Hydraulic Breaker GBM60 / GBM90 / GB1T / GB2T /GB3TP/ GB4T / GB5T / GB6T / GB8AT(GB7T) / GB8T

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Page 1: GB RockBreaker Manual

8/19/2019 GB RockBreaker Manual

http://slidepdf.com/reader/full/gb-rockbreaker-manual 1/84

OPERATING & MAINTENANCE MANUAL& PART LIST

T-SERIES

GB150 / GB8AF / GB8F / GB9F / GB11F / GB14F

F-SERIES

GB Hydraulic Breaker

GBM60 / GBM90 / GB1T / GB2T /GB3TP/ GB4T / GB5T /

GB6T / GB8AT(GB7T) / GB8T

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No. TFME1004

Exceptional Performance & Quality!

GBM60 / GBM90 / GB1T / GB2T /GB3TP/ GB4T /GB5T / GB6T / GB8AT(GB7T) / GB8T

T-SERIES

GB150 / GB8AF / GB8F / GB9F / GB11F / GB14FF-SERIES

GB Hydraulic Breaker

OPERATING & MAINTENANCE MANUAL

& PART LIST

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GB INDUSTRIES CO., LTD. | 3

PREFACE

Thank you for joining General Breakers

Thanks for purchasing our hydraulic breaker.This instruction manual is provided to explain the proper use, maintenance and inspection of the breaker in

order to obtain the best performance from the breaker under all conditions, it is necessary to observe and

perform correctly the necessary maintenance and inspections.

This publication should be carefully read prior to installation and operation in order to prevent any mishandling

of the breaker. We guarantee that faithful compliance of the instructions will contribute to the best operational

condition. Customers are reminded that General Breakers takes no responsibility in damage caused by failure

to follow our guidelines or failure to use genuine parts.

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4 | GB HYDRAULIC BREAKERS

INDEX

1. PRECAUTIONS WHEN USING HYDRAULIC BREAKERS 6

2. STRUCTURE 13

3. WORKING PRINCIPLE 14

4. INSTALLATION AND REMOVAL OF HYDRAULIC BREAKER 16

1. Checking before installation 16

2. General view of breaker installed to base machine 17

3. Inspection and charging of N2 gas at back head 17

4. Inspection and charging of N2 gas at accumulator 20

5. Hydraulic pipe lines for exclusive use 22

6. Installation and removal of hydraulic breaker 23

7. Transport of breaker 24

8. Underwater Operation of the breaker (Option) 25

5. HYDRAULIC OIL 27

1. Selection of oil 27

2. Oil contamination 27

3. Criteria of oil contamination and malfunction (General analysis) 28

4. Criteria of malfunction by hydraulic oil color (Simple discrimination by ASTM color) 28

6. TOOLS 29

1. Replacement of tool 29

2. Tool bit greasing 30

3. Guide to tool choice 31

7. OPERATION 32

1. Operation method 33

2. Proper thrust 33

3. Precautions in operation 34

8. INSPECTION AND MAINTENANCE 39

1. Inspection points 40

2. Wearing parts 42

3. Operational pressure 43

OPERATING &MAINTENANCE MANUAL

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T-SERIES

GBM60 / GBM90 / GB1T / GB2T / GB3TP

- BREAKER BODY 48- SIDE PLATE TYPE BRACKET 51

- BOX TYPE BRACKET 53

- SIDE TYPE BRACKET 55

- UNIRAM TYPE BRACKET 57

- BACK HOE TYPE BRACKET 59

GB4T / GB5T / GB6T / GB8AT(GB7T) / GB8T

- BREAKER BODY 60

- SIDE PLATE TYPE BRACKET 63

- BOX TYPE BRACKET 64

- SIDE TYPE BRACKET 68

- UNIRAM TYPE BRACKET 69

- TRENCH TYPE BRACKET 70

F-SERIES

GB150 / GB8AF / GB8F / GB9F / GB11F / GB14F

- BREAKER BODY 71

- SIDE PLATE TYPE BRACKET 74

- BOX TYPE BRACKET 75

- SIDE TYPE BRACKET 79

GB INDUSTRIES CO., LTD. | 5

4. Oil temperature 43

5. Oil leakage 43

9. TROUBLE SHOOTING GUIDE 44

1. Problems in operation 44

2. Gas leakage 45

3. Oil leakage 46

INDEX PART LIST

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6 | GB HYDRAULIC BREAKERS

DANGER

DO NOT OPERATE THE BREAKER UNLESS THE FOLLOWING SAFETY INSTRUCTIONS HAVE

BEEN THOROUGHLY READ AND UNDERSTOOD! READ THIS MANUAL BEFORE INSTALLING,

OPERATING OR MAINTAINING THIS EQUIPMENT!

WARNING

�WHEN LEAVING THE HYDRAULIC EXCAVATOR, LOWER THE BREAKER TO THE GROUND

AND TURN THE ENGINE OFF.

�NEVER ATTACH A CABLE OR SLING TO THE BREAKER TO HOIST A LOAD. DOING SO IS

EXTREMELY DANGEROUS.

�KEEP PEOPLE AND EQUIPMENT AWAY FROM THE BREAKER DURING OPERATION.

ROCKS FLYING FROM THE BREAKER DURING OPERATION MAY CAUSE ACCIDENTS.

�EAR, EYE AND BREATHING PROTECTION MUST BE USED AT ALL TIMES WHEN

OPERATING THE BREAKER.

DO NOT TOUCH ANY PART OF THE MACHINE WHILE THE HYDRAULIC OIL IS HOT. IT MAYCAUSE YOUR HANDS TO BURN.

IMPORTANT

�CHECK THAT THERE IS SUFFICIENT HYDRAULIC OIL AND THAT IT IS NOT

CONTAMINATED.

�CHECK THAT HOSES, BOLTS AND NUTS ARE SECURE.

�GREASE THE SHANK PART OF THE TOOL.

�DO NOT USE THE BREAKER IN WATER.(SPECIAL SPECIFICATIONS ARE AVAILABLE FOR UNDERWATER WORK)

�DO NOT CONTINUOUSLY BLOW THE SAME PLACE FOR MORE THAN ONE MINUTE.

�DO NOT OPERATE THE BREAKER WHEN THE CYLINDERS OF YOUR EXCAVATOR ARE

LOCATED AT THEIR STROKE END.

�DO NOT CHARGE ANY GASES INSTEAD OF NITROGEN GAS INTO BACK HEAD (GAS

CHAMBER) AND ACCUMULATOR.

�DO NOT OPERATE THE BREAKER UNLESS ALL SAFETY DECALS DESCRIBED IN THIS

MANUAL ARE IN PLACE. THE DECALS MUST BE INSPECTED PERIODICALLY TO ENSURE

THAT ALL WORDING IS LEGIBLE. THE DECALS MUST BE REPLACED IF ILLEGIBLE.

REPLACEMENT DECALS CAN BE OBTAINED FROM YOUR AUTHORIZED GENERAL

BREAKERS DISTRIBUTOR.

PRECAUTIONS WHEN USING HYDRAULIC BREAKERS1

Precautions when using hydraulic breakers

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GB INDUSTRIES CO., LTD. | 7

ⓐ Operate the breaker in accordance with all laws and regulations which affect you, your equipment

and the worksite.

ⓑ Do not operate the breaker unless you have read the carrier equipment manual and fully understand

all safety, operation and maintenance instructions.

ⓒ Ensure that all maintenance procedures recommended in this manual are completed before using

the equipment.

ⓓ Know the limits of your equipment.

ⓔ Establish a training program for all operators to ensure safe operation.ⓕ Do not operate the breaker unless fully trained or under the supervision of an instructor.

ⓖ Become familiar with the carrier controls before operating the carrier and the breaker.

ⓗ While learning to operate the breaker and carrier, do so at a slow pace. If necessary, set the carrier

mode selector to the slow position.

ⓘ Make sure all controls(levers and pedals) are in the neutral position before turning on the carrier’s

ignition.

ⓙ Before leaving the carrier, always lower the boom and ensure the carrier is stable. Never leave the

machine with the engine running. Always engage the parking brake.

ⓚ Do not operate the breaker at oil temperatures above 175F/80C. Operation at higher temperatures

can cause damage to the internal components of the breaker and backhoe/ excavator, and will resultin reduced breaker performance.

ⓛ Do not operate a damaged, leaking, improperly adjusted, or incompletely assembled breaker.

ⓜ Do not modify the breaker in any manner.

ⓝ Only use breaker tools manufactured by General Breakers. Use of breaker tools produced by another

manufacturer may damage the equipment and will void the warranty.

ⓞ To avoid personal injury or equipment damage, all breaker repair, maintenance and service must

only be performed by authorized and properly trained personnel.

ⓟ If you do not understand how to safely operate your breaker, contact an authorized General Breakers

Dealer for assistance.

ⓠ Keep this manual with the breaker.ⓡ Do not operate this equipment if you are taking medication which may affect your mental judgement

or physical performance.

ⓢ Do not operate this equipment if you are under the influence of drugs or alcohol.

ⓣ Remove breaker from carrier during transport.

ⓤ Be familiar with the work area and surroundings.

1. GENERAL SAFETY PRECAUTIONS

Precautions when using hydraulic breakers

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8 | GB HYDRAULIC BREAKERS

DANGER STICKER

1-1. STICKER DESCRIPTION

Precautions when using hydraulic breakers

WARNING STICKER

- Shown smaller than actual size

- Use hearing protection

- Read the manual before use

- Keep away when operating

SPECIFICATION NUMBER STICKER

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GB INDUSTRIES CO., LTD. | 9

ACCUMULATOR STICKER (A)

ACCUMULATOR STICKER (B)

Precautions when using hydraulic breakers

BACK HEAD STICKER

MODEL STICKER & LOGO

CAUTION STICKER- Lifting point

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10 | GB HYDRAULIC BREAKERS

SAFETY SYMBOLS

1.With breaker mounted on carrier, apply down pressure on tool.

2. Fill cavity with recommended grease.

3. Grease whenever tool looks dry.

4. When installing a new tool, liberally coat the upper 1/3 of the tool

with grease before inserting.

5. Failure to comply with these instruction can result in damage to the

breaker and will void the warranty.

GREASING

a. Safety symbols are to emphasize all operator,

maintenance and repair action which, if not strictly

followed, could result in a life-threatening situation,

bodily injury of damage to equipment.

b. Always observe safety symbols. They are included

for your safety and for the protection of the breaker.

DANGER

This safety symbol may appear on

the breaker. It is used to alert the

operator of an action that could

place him/her or others in a life

threatening situation.

WARNING

This safety symbol appears in

these instructions to identify an

action that could cause bodily

injury to the operator or other

personnel.

IMPORTANT

This safety symbol appears in

these instruction to identify an

action or condi- tion that could

result in damage to the breaker or

other equipment.

GREASING STICKER

Precautions when using hydraulic breakers

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GB INDUSTRIES CO., LTD. | 11

UNIT GBM60 GBM90ITEM \ MODEL

Impact energy   joules

GB1T GB2T GB3TP GB4T GB5T GB6TGB8AT(GB7T)

GB8T

1-2. GB BREAKER SPECIFICATIONS

Precautions when using hydraulic breakers

180 220 320 600 700 1,270 2,000 2,950 4,500 5,000

Blow per minute   b.p.m  800 ~

1,400

650 ~

1,200

550 ~

1,100

450 ~

1,000

475 ~

950

480 ~

850

450 ~

780

420 ~

730

350 ~

680

320 ~

660

Oil flow rate  lit/min

(g.p.m)

15~30

(4~8)

20~35

(5~9)

24~50

(6~13)

34~60

(9~16)

40~80

(10~21)

45~85

(12~22)

85~110

(22~29)

100~120

(26~32)

120~150

(32~40)

120~150

(32~40)

Operating

weightwith mountingcap

Side plate

type

kg

(lbs)

75

(165)

86

(189)

176

(387)

324

(713)

380

(836)

613

(1,349)

850

(1,870)

1,280

(2,816)

1,800

(3,960)

1,980

(4,356)

Low noise

box type

kg

(lbs)

135

(297)

145

(319)

190

(418)

310

(682)

380

(836)

570

(1,254)

890

(1,958)

1,200

(2,640)

1,700

(3,740)

1,860

(4,092)

Height with toolwith low noise box typewithout mounting cap

mm(inch)

988(38.9)

1,082(42.6)

1,205(47.4)

1,384(54.5)

1,451(57.1)

1,789(70.4)

2,043(80.4)

2,264(89.1)

2,411(94.9)

2,477(97.5)

Tool diameter  mm

(inch)

40

(1.57)

45

(1.77)

58

(2.28)

70

(2.75)

75

(2.95)

90

(3.54)

100

(3.93)

125

(4.92)

135

(5.31)

140

(5.51)

Weight of carrier  ton

(lbs)

0.7~2.5

(1,540~

5,500)

1.2~3

(1,640~

6,600)

2.5~4.5

(5,500~

9,900)

3.5~7

(7,700~

15,400)

5~9

(11,000~

19,800)

6~13

(13,200~

28,600)

10~17

(22,000~

37,400)

15~20

(33,000~

44,000)

18~28

(39,600~

61,600)

20~30

(44,000~

66,000)

Bucket capacity   c.b.m 0.02~0.04 0.04~0.07 0.06~0.1 0.1~0.25 0.2~0.35 0.25~0.45 0.4~0.7 0.6~0.8 0.7~1.0 0.8~1.1

Operating

oil pressure

bar

(psi)

75~95

(1,102~

1,380)

80~100

(1,176~

1,470)

90~120

(1,323~

1,764)

95~130

(1,396~

1,911)

100~140

(1,470~

2,058)

130~150

(1,911~

2,205)

150~170

(2,205~

2,499)

150~170

(2,205~

2,499)

160~180

(2,352~

2,646)

160~180

(2,352~

2,646)

Hose / Tubing

size

mm

(inch)

13

(1/2)

13

(1/2)

13

(1/2)

13

(1/2)

13

(1/2)

19

(3/4)

19

(3/4)

25

(1)

25

(1)

25

(1)

85 dB(A) radius

(Box type)  m 7 7 8 10 11 12 13 14 15 16

T-SERIES

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12 | GB HYDRAULIC BREAKERS

UNIT GB150 GB9F GB11F GB14FITEM \ MODEL

Impact energy   joules   2,200 5,100 6,100

GB8AF

4,500

GB8F

4,600 9,500

Blow per minute   b.p.m 420~ 730 280 ~ 550 280 ~ 550350~ 680 300 ~ 600 280 ~ 400

Oil flow rate  lit/min

(g.p.m)

90~115

(24~30)

120~150

(32~40)

160~240

(42~61)

120~150

(32~40)

120~150

(32~40)

190~250

(50~66)

kg

(lbs)

945

(2,083)

2,020

(4,444)

2,640

(5,808)

1,830

(4,026)

1,890

(4,158)

3,040

(6,688)

kg

(lbs)

985

(2,171)

1,930

(4,246)

2,400

(5,280)

1,770

(3,894)

1,830

(4,026)

3,150

(6,930)

Height with toolwith low noise box typewithout mounting cap

mm(inch)

2,110(83)

2,477(97.5)

2,880(113.4)

2,411(94.9)

2,433(95.8)

2,970(116.9)

Tool diameter  mm

(inch)

115

(4.53)

140

(5.51)

155

(6.10)

135

(5.31)

137

(5.39)

160

(6.3)

Weight of carrier  ton

(lbs)

13~18

(28,600 ~

39,600)

20~30

(44,000 ~

66,000)

28~40

(61,600 ~

88,000)

18~28

(39,600 ~

61,600)

18~28

(39,600 ~

61,600)

32~45

(70,400 ~

99,000)

Bucket capacity   c.b.m 0.5~0.8 0.8~1.1 1.1~1.50.7~1.0 0.8~1.0 1.4~1.9

Operating

oil pressure

bar

(psi)

150~170

(2,205~2,499)

160~180

(2,352 ~2,646)

160~180

(2,352 ~2,646)

160~180

(2,352 ~2,646)

160~180

(2,352 ~2,646)

160~185

(2,352 ~2,719)

Hose / Tubing

size

mm

(inch)

25

(1)

25

(1)

32

(1 ¼     )

25

(1)

25

(1)

32

(1 ¼     )

85 dB(A) radius

(Box type)  m 14 16 1715 15 18

F-SERIES

Precautions when using hydraulic breakers

Operating

weightwith mounting

cap

Side plate

type

Low noise

box type

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GB INDUSTRIES CO., LTD. | 13

STRUCTURE2 

TIE ROD

Front head, cylinder and back head of breaker

body are tightly fixed with four tie rods.

BACK HEADGas charging valve is built in and the inside is

charged with N2 gas.

VALVE

Cylindrical control valve is built in the valve

housing and controls piston reciprocation.

CYLINDER

The cylinder is the heart of the breaker con-

taining hydraulic circuit for piston reciprocation.

ACCUMULATOR (GB11F / GB14F)

The accumulator compensates for pressure in

the hydraulic circuit and prevents pulsation. It is

not usually necessary to refill. Use N2 gas only.

PISTON

Kinetic energy of the piston is converted into

hammering energy after hitting the tool. The

hammering energy transmitted to the tool breaks

rocks.

FRONT HEAD

The front head supports the whole breaker.

Thrust ring and thrust bushing prevents shock

from the tool.

TOOL

The specially heat-treated tool is directly applied

to break rocks. It is in the form of a wedge, moil

point, blunt, cone and wide chisel appropriate to

the application. (optional)

T-SERIES

Tie Rod

Back Head

(Gas Chamber)

Valve

Cylinder

Accumulator

Piston

Front Head

Tool

Structure

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14 | GB HYDRAULIC BREAKERS

WORKING PRINCIPLE3 

T-SERIES

The relation between the area (A1) affecting the pressure from the upper chamber of the piston and the area

(A2) affecting the pressure from the lower chamber of the piston is A1> A2 and high pressure always applies to

A2. When A1 changes from high to low pressure or vice versa, Piston C2 reciprocates. Inside of back head is

charged with the high pressure gas and gas energy stored in the upstroke of the piston C2 effectively acts on

the piston C2 during the impact.

1. POWER STROKE

When piston C2 reaches top dead center, high pressure oil

from valve high-pressure port B3 applies to upper chamber

of the piston A1 to change the piston stroke from upstroke to

impact.

At this time the relation between the area(A3) affecting the

pressure from valve high pressure changes and the

area(A4) of the valve change chamber is A4 > A3. The high

pressure always applies to A4 and valve C4 remains in theupper position.

2. VALVE SHIFT

When cylinder low pressure port B1 is connected to cylinder

change port B2, the pressure in valve change port B4lowers. As force acting on valve C4 is the only pressure in

valve high pressure chamber A3, valve C4 starts lowering.

During the valve lowering stroke, valve high pressure port

B3 is closed and valve low pressure port B5 is opened to

the upper chamber of the piston A1 to lower the pressure in

the upper chamber of the piston A1.

Working principle

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GB INDUSTRIES CO., LTD. | 15

Working principle

3. IMPACTWhen piston C2 reaches impact point, kinetic energy

obtained by piston C2 during the impact stroke is transmited

to the tool C3 for the impact energy required to break. At this

time, as high pressure applies only to the lower chamber of

the piston A2, piston C2 starts reversing. Further, as high

pressure applies only to the valve high pressure chamber

A3, valve C4 is remaining in the lower position.

4. UPSTROKE

When cylinder change port B2 is connected to cylinder

lower pressure port B1, high pressure oil applies to low

pressure outlet port and valve C4 start to the down position

A1 this time valve low pressure port B5 is closed and valve

high pressure B3 is opened the upper chamber of the piston

A1 to rise the pressure in the lower chamber of the piston

A1.

A1 : Area of the upper chamber of the piston

A2 : Area of the lower chamber of the piston

A3 : Area of valve high pressure chamber

A4 : Area of valve change chamber

B1 : Cylinder low pressure port

B2 : Cylinder change port

B3 : Valve high pressure port

B4 : Valve change port

B5 : Valve low pressure port

C1 : Breaker body

C2 : piston

C3 : Tool

C4 : Valve

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16 | GB HYDRAULIC BREAKERS

INSTALLATION & REMOVAL OF HYDRAULIC BREAKER4 

1. CHECKING - BEFORE INSTALLATION INSTRUCTIONS

WARNING

CHECK THE“SPECIFICATIONS”SECTION OF THIS MANUAL TO DETERMINE CORRECT BACKHOE

AND EXCAVATOR SIZES, HYDRAULIC PRESSURE, AND HYDRAULIC FLOW REQUIREMENTS.

IF HYDRAULIC PRESSURE, HYDRAULIC FLOW ARE EXCEEDED, THE BREAKER WARRANTY IS

VOID.

CHECK THE NITROGEN GAS! - BACK HEAD AND ACCUMULATOR.

BE SURE THE FLUID IN THE HYDRAULIC SYSTEM IS CLEAN.

CHECK THE HYDRAULIC FILTER. REPLACE THE FILTER IF DIRTY OR DETERIORATE.

INSIDE HOSE AND PIPING MUST BE CLEAN.

THE CONTAMINATED PART MUST BE CLEANED WITHOUT DELAY.

HYDRAULIC OIL OR LIGHT OIL IS HIGHLY RECOMMENDED.

IMPORTANT

THE CIRCUIT RELIEF SETTING PRESSURE IS NOT FIXED. HOWEVER, IT WILL BE ADJUSTED BY PUMP

CAPACITY.

RECOMMENDED CIRCUIT RELIEF SETTING PRESSURE AND BACK PRESSURE

Since GB hydraulic breaker operates with various kinds of hydraulic construction machines, it should

be installed after our serviceman has carried out the necessary check on the base machine to utilizeits full performance.

UNIT GBM60 GBM90 GB1T GB2T GB3TP GB4T GB5T GB6T GB8AT GB8TITEM \ MODEL

Relief settingpressure

Back pressure(Max)

kgf/cm2

kgf/cm2

150 150 150 160 160 180 200

14 14 14 16.3 16.3 16.3 16.3

200

16.3

200

16.3

200

16.3

Installation & removal of hydraulic breaker

T-SERIES

UNIT GB150 GB8AFITEM \ MODEL

Relief settingpressure

Back pressure(Max)

kgf/cm2

kgf/cm2

210 210

16.3 16.3

GB8F GB9F GB11F GB14F

210 210 210 210

16.3 16.3 16.3 16.3

F-SERIES

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GB INDUSTRIES CO., LTD. | 17

Installation & removal of hydraulic breaker

2. GENERAL VIEW OF BREAKER INSTALLED TO BASE MACHINE

WARNING

CHARGING GAS PRESSURE CHANGES ACCORDING TO THE TOOL CONDITION. LAY DOWN THE

BREAKER AND LET THE TOOL EXTEND FULLY TO CHARGE GAS.

STAY CLEAR OF THE TOOL WHILE CHARGING THE BREAKER WITH GAS. THE TOOL MAY BE

IMPACTED BY THE PISTON AND FORCED OUT ABRUPTLY.

TAKE CARE WHEN THE TIE RODS ARE CHANGED OR THE BREAKER BODY IS DISASSEMBLED.

USE SPECIAL CARE TO HANDLE AND STORE THE N2 GAS CYLINDER AS IT IS A HIGH-

PRESSURIZED CONTAINER.

USE NITROGEN GAS ONLY.

SEE“CONVERSION TABLE FOR CHARGING N2 GAS PRESSURE TO BACK HEAD”

3. INSPECTION AND CHARGING OF N2 GAS AT BACK HEAD

  Hydraulic breaker

  Bracket

  Bracket pin

  Tool

  Stop valve

  Outlet piping

  Inlet piping

  Operation lever

  Hydraulic pump

  Oil cooler

  Hydraulic tank

1

2 3 5

4 8

7 6

10 11 9

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18 | GB HYDRAULIC BREAKERS

3-1. CHARGING OF N2 GAS INTO BACK HEAD

(4) Adjust the pressure slowly decreasing by using the

pressure gauge if gas is sufficient

(5) Tighten gas valve plug (Do not cut O-ring)

(1) Remove gas valve plug (2) Insert 3-way valve with

pressure gauge assembled

(Note. 1)

(3) If gas is insufficient, adjust to specified valve as

shown in the previous page (Note. 2)

1. Insert 3-way valve after its handle is fully turned counterclockwise.

2. Turn the 3-way valve handle clockwise slowly. Stop turning it when the needle of the gauge starts to

move. If it is turned clockwise too tightly, the valve may easily be damaged.

Pay special attention to ensure that the nitrogen gas is not charged excessively.

NOTE

Back head gas pressure0 / 32 10 / 50 20 / 68 30 / 86 40 / 104

Ambient Temperature (℃/℉)

kg/cm2

psi

13.2

187

13.6

193

14

198

14.4

204

14.8

210

T-SERIES | GBM60 / GBM90 / GB1T

CONVERSION TABLE FOR CHARGING NITROGEN GAS PRESSURE TO BACK HEAD

(Depends on the temperature of the back head surface)

Installation & removal of hydraulic breaker

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GB INDUSTRIES CO., LTD. | 19

Back head gas pressure0 / 32 10 / 50 20 / 68 30 / 86 40 / 104

Ambient Temperature (℃/℉)

kg/cm2

psi

15.5

220

15.9

226

16.3

231

16.8

238

17.3

246

T-SERIES & F-SERIES | GB2T~8T / GB150~14F

BACK HEAD STICKER SYMBOL

- appears on the back head charging valve

Installation & removal of hydraulic breaker

GBM60, GBM90, GB1T GB2T~GB14F

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20 | GB HYDRAULIC BREAKERS

3-WAY VALVE ASSEMBLY

4. INSPECTION AND CHARGING OF N2 GAS IN ACCUMULATOR

GB11F / GB14F

WARNING

USE SPECIAL CARE TO HANDLE AND STORE THE N2 GAS CYLINDER AS IT IS A HIGH-

PRESSURIZED CONTAINER.

USE NITROGEN GAS ONLY.

SEE“CONVERSION TABLE FOR CHARGING N2 GAS PRESSURE TO ACCUMULATOR”

STANDARD ACCUMULATOR GAS PRESSURE 57kg/cm2 /808psi, AT 20℃ /68℉ AMBIENT

TEMPERATURE, DO NOT OVER PRESSURIZE ACCUMULATOR.

Cautions for charging N2 gas to the accumulator

- Be sure to use the 3-way valve assembly for charging the N2 gas.

If charging gas leaks directly from the cylinder, the diaphragm may be broken off.

- If charging for handling N2 gas to only the accumulator, make sure that the accumulator body and

cover are tightened fully.

1) Make sure the cap and valve of the 3-way valve assembly are fully tightened.

2) Remove the cap from the accumulator and tighten the charging valve fully.

3) Check if 0-rings are installed to the bushing. Remove the plug and screw in the bushing.

Installation & removal of hydraulic breaker

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GB INDUSTRIES CO., LTD. | 21

4) Install the bushing to the 3-way valve assembly.5) Loosen the charging valve gradually. The charging pressure is indicated on the pressure gauge.

6) Close the valve clockwise when the gas pressure is normal. When the gas pressure is higher, repeat

loosening and tightening the valve of 3-way valve assembly. The pressure is lowered gradually.

7) Loosen the valve of the 3-way valve assembly to discharge the N2 gas in the 3-way valve assembly.

8) Remove the 3-way valve assembly and tighten the plug and cap.

4-1. CHARGING OF N2 GAS INTO ACCUMULATOR

1) Connect the charging hose to N2 gas cylinder after screwing the bombe adapter onto adapter, nut

and installing to the N2 gas cylinder.

2) Connect the 3-way valve assembly to the charging hose after unscrewing the cap on the 3-way valve

assembly.

3) Remove the cap from the accumulator and tighten the charging valve fully.

4) Check if 0-ring are installed to the bushing. Remove the plug and screw the bushing.

5) Loosen the accumulator charging valve after checking if bushing is installed to the 3-way valve

assembly.

6) Turn the handle of the N2 gas cylinder counterclockwise slowly to charge gas.

7) Charge gas in accordance with the conversion table for charging N2 gas pressure to accumulator.

8) Turn the handle of the N2 gas cylinder clockwise to close the cock.

9) Close the accumulator charging valve.

10) Loosen the valve of the 3-way valve assembly to discharge the N2 gas remaining in the charging

hose.11) Remove the charging hose, 3-way valve assembly and bushing and tighten the plug and cap.

Installation & removal of hydraulic breaker

Accumulator gas pressure0 / 32 10 / 50 20 / 68 30 / 86 40 / 104

Ambient Temperature (℃/℉)

kg/cm2

psi

50

711

53

754

57

808

60

853

62

882

CONVERSION TABLE FOR CHARGING NITROGEN GAS PRESSURE TO ACCUMULATOR

ACCUMULATOR STICKER (A) SYMBOL

- appears on the accumulator body

GB150~GB14F

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22 | GB HYDRAULIC BREAKERS

GB8AF~GB9FGB150 GB11F, GB14F

N2 GAS CHARGING TOOLS TO ACCUMULATOR

ACCUMULATOR STICKER (B) SYMBOL- appear on the accumulator body

Operation of the hydraulic breaker requires installation of hydraulic pipe lines for exclusive use of the

hydraulic breaker. As hydraulic pipe lines vary depending on base machines, our service engineer must

first check the hydraulic pressure, oil capacity, pressure loss and other conditions of the base machine

before installing hydraulic pipe lines. Use only genuine parts in case of the need for replacement as

hydraulic pipe lines (hoses, pipes and fittings) are made of materials carefully selected in consideration

of durability.

5. HYDRAULIC PIPE LINES FOR EXCLUSIVE USE

Installation & removal of hydraulic breaker

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GB INDUSTRIES CO., LTD. | 23

WARNING

THE HYDRAULIC SYSTEM TO THE BASE MACHINE MUST BE CHECKED BY AN AUTHORIZED

SERVICE ENGINEER BEFORE FIRST USE AND AFTER ANY MODIFICATIONS.

Installation & removal of hydraulic breaker

Tank

Filter

Low PressureOUT

IN

(Cable)

X N

Hydraulic

pump

Hydraulic

pumpTank

Tank

Tank

Tank

Control pedal for breaker

Control valve for breaker

High Pressure TrevalingTrevaling

Bucket

SwingArm

Boom

Boom

(1) Move the base machine to stable ground

free from mud, dust and dirt. Stop the

engine, turn off the main switch and deflate

air from oil tank if it is pressurized.

(2) Turn the stop valve (installed at the end of

the boom arm) 90。to the “off” position to

prevent hydraulic oil from flowing out.

6. INSTALLATION & REMOVAL OF THE HYDRAULIC BREAKER

Wood block

Position of the base machine for installation andremoval of the hydraulic breaker

When the bucket and breaker operations are performed alternately, the bucket and breaker can be

easily exchanged by the hydraulic hoses and two pins. There is however, a risk of hydraulic circuit

contamination. Therefore, install and remove as follows.

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24 | GB HYDRAULIC BREAKERS

(1) Remove tool from breaker.

(2) Remove breaker from excavators/backhoes.

(3) Transport breaker and tool on other transporter.

7. TRANSPORT OF BREAKER

(3) Loosen hose plug on the breaker arm. Collect a small amount of oil flowing out at this time and put

into a container.

(4) Be careful to prevent mud or dust from entering oil hoses and pipe lines. Plug oil hoses with hose

plug and pipe lines with union caps. Bind high and low pressure hoses with a wire to prevent them

from getting muddy.

(5) To remove the breaker, pull out pins in the bucket link and arm. When leaving the breaker outdoors,

set the breaker on wood blocks and cover with sheets.

(6) When leaving the removed breaker for a long period of time

- Clean the exterior of the breaker.

- Detach tool from the front head and spray with rust preventive oil.

Bleed N2 gas from the back head before pushing piston into cylinder.

- Apply grease to each part of the breaker and then install tool again.

(7) To install the hydraulic breaker, reverse the aforementioned removal procedures. The bucket

operation easily contaminates the end part of hoses and pipe lines. The contaminated part must be

cleaned without delay. Hydraulic oil or light oil is highly recommended.

WARNING : Do not approach tool, as rod may fly out due to the N2 gas pressure.

Installation & removal of hydraulic breaker

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GB INDUSTRIES CO., LTD. | 25

- Uner water operation of the breaker is possible to pour air into the striking area between the piston

and the rod.

- For the sake of underwater operation, the piston adatper is supplied as a standard part.

- For the sake of underwater operation, breaker is installed the air supply kit separately.

- Underwater usage of the breaker without the underwater kit and air compressor will cause serious

damage to the hydraulic breaker.

INSTALLING THE AIR SUPPLY KIT

1) Clean the air check valve hole on the side of the cylinder.

2) Remove the air check valve with the standard tool.3) Apply the O-ring to the cylinder’s air check valve hole and install it.

4) Connect the hose to the air check valve hole and install it.

5) Before underwater operation, the breaker get into water pouring air into air check valve.

AIR FLOW RATE FOR UNDERWATER OPERATION

The air capacity levels is in the following chart. Supply appropriate air flow rate inaccordance with the

breaker model and operating depth.

8. UNDERWATER OPERATION OF THE BREAKER (OPTION)

Installation & removal of hydraulic breaker

DEPTH(m)

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

PRESSURE(bar)

3bar 

GBM90

GBM60 GB1T GB2T GB3TP GB5T

GB6T

GB150

GB8T

GB8AT

GB8F

GB8AF

GB11F

GB14F

GB4T

1,000 2,000

Blows per minute (l/min)

3,000 4,000 5,000

2bar 

1bar 

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26 | GB HYDRAULIC BREAKERS

ILLUSTRATION FOR INSTALLING THE UNDERWATER BREAKER

NO. PART NO.

1

2

3

4

1

1

1

1

OP13007

OPTION

OPTION

EV14039

PART NAME Q’TY

O-RING

MALE ADAPTER

HOSE

AIR CHECK VALVE

Installation & removal of hydraulic breaker

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GB INDUSTRIES CO., LTD. | 27

Hydraulic oil

Selection of Hydraulic oil determines the efficiency of the hydraulic breaker performance. Please consult

with our service station under following conditions.

a. When used in special regions where climate is severe(e.g. extremely cold or hot weather), viscosity at

different constant ambient air temperatures.

b. When recommended brands of hydraulic oil are not available.

c. When hydraulic oils supplied for the base machine differ from the recommended one.

1. SELECTION OF OIL

Contaminated oil results in malfunctions of the breaker as well as the base machine and causes

damage to parts. Pay special attention to oil contamination.

Contaminated oil should be changed without delay. When changing oil, thoroughly wash oil tank,

cylinder and pipes. Cleaning or replacing oil filter also requires check for oil contamination.

- Replacement of filter : after first 50 hours and every 250 hours thereafter- Replacement of Hydraulic oil : every 1,500 hours

2. OIL CONTAMINATION

HYDRAULIC OIL5 

MAKER VISCOSITY GRADE

SUMMER SAE68 WINTER SAE46

HYDRAULIC OIL

NLGI NO. 2

GREASE

Shell

Esso

Mobil

Gulf

Caltex

Shell Tellus T68

Nuto H68

Mobil DTE16

Harmony 68

Lando CZ68

Shell Tellus T46

Nuto H46

Mobil DTE16

Harmony 46

Lando CZ46

Alvania Grease2

Beacon Q2

Mobil Grease Special

Gulf Crown EP2

WARNING

HYDRAULIC OIL TEMPERATURE AND VISCOSITY

DO NOT OPERATE THE HYDRAULIC BREAKER AT OIL

TEMPERATURES FROM 20℃ /68℉TO 80℃ / 176℉.

OPERATION AT HIGHER TEMPERATURES CAN DAMAGE

THE INTERNAL COMPONENTS OF THE BREAKER AND

EXCAVATOR, WHICH WILL RESULT IN REDUCED

BREAKER PERFORMANCE.

HYDRAULIC OILS AND GREASE RECOMMENDED FOR HYDRAULIC BREAKER BY GB

IMPORTANT

BE SURE THE FLUID IN THE

HYDRAULIC SYSTEM IS CLEAN.

CHECK THE HYDRAULIC FILTER.

REPLACE THE FILTER IF DIRTY

OR DETERIORATED.

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28 | GB HYDRAULIC BREAKERS

3. CRITERIA OF OIL CONTAMINATION AND MALFUNCTION/ General Analysis

ANALYSIS ITEM CRITERIA

within±10%

(40℃ cst)Adhesiveness

Less than 0.1

(%)Moisture

Less than 0.3

(mg KOH/g)Oxidizing Level

CAUSES AND EFFECTS WHEN EXCEEDS THE CRITERIA

Adhesiveness rarely decreases soley because of hydraulic

oil. Entry of different kind of oil may reduce the

adhesiveness which contributes to rising oil temperature,

wear and stretch of bearings and gears and malfunction of

hydraulic oil.

Use of a lubricating oil during long period of time under

high of a lubricating(higher than 60℃) will oxidize it.

Oxidizing level rises as ozidization proceeds. Sludge will

be produced during the process, leading to unsatisfactory

operation of the breaker, erosion of metals or

obsolescence of seal materials.

Moisture causes rust, wear and stretch. Moisture of 0.3%

gathers a considerable amount of rust and considerable

amount of rust moisture of 0.5% or more will cause

damage to the machine.

Hydraulic oil turns black as the breaker fails to display best performance. The old oil is assumed to be

contaminated when there is a visual difference between the old and new oil color and functions begin to

deteriorate when hydraulic oil turns darker than the new oil color(ASTM number) by more than two.

4. CRITERIA OF MALFUNCTION BY HYDRAULIC OIL COLOR/ Simple discrimination by ASTM color

Hydraulic oil

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Tool

RubberPlug

1) Bofore removing tool, clean the tool pins and

tool area.

Lay the breaker in the horizontal position and

remove the rubber plug and stopper pin from

the opposite side by using a hammer and a

steel bar.

1. REPLACEMENT OF TOOL

TOOL6 

Hammer

Steel Bar

Stopper pin

Fig. 1

Tool Retainer

Stopper Pin

Tool

3) To mount tool, firstly put a sufficient amount

of grease into the tool’s groove.

Perform the above procedures(Fig. 1, 2)

in the reverse manner to dismount.Grease

Application

Fig. 3

2) Push the tool retainer up from the bottom

with a removed stopper pin.

Fig. 2

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30 | GB HYDRAULIC BREAKERS

Tool

2. TOOL BIT GREASING

1. When replacing the tool, remove burrs and swelling with a grinder or the like.

2. Regularly check the tool pins for cracks or breakage upon replacement of tool.

NOTE

CAUTION

INSUFFICIENT GREASING MAY CAUSE

ABNORMAL WEAR OF TOOL BUSH AND TOOL,

AND TOOL BREAKAGE.

IMPORTANT

DO NOT USE LUBRICANTS OTHER THAN

THOSE RECOMMENDED, WITHOUT WRITTEN

APPROVAL FROM GB.

Apply grease to bush and tool every two hours.

Adapt grease interval and amounts to tool wear rates

and working conditions.

Tool shank must be well lubricated before installing tool.

Greasing

While greasing, hammer must be upright against the

tool, to ensure that grease will penetrate between tool

and bush.

LubricantGrease

Total

Shell

Mobil

Yukong

Caltex

Total EP#2

Alvania EP#2

Mobil FAW#2 Or Cold Temp Mobil FAW#1

Crown EP2

Multipac EP2

Manufacturer

RECOMMENDED LUBRICANT GREASES

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Tool

A B C D E

3. GUIDE TO TOOL CHOICE

The correct choice of the most suitable tool for a certain job is crucial not only in increasing breaker

productivity, but also for the life of the tool itself.

A. WEDGE

- Suitable for all kinds of digging or narrow trenching on soft/medium stratified rocks.

B. MOIL POINT (PYRAMID POINT)

- Suitable for fine/medium concrete demolition or for soft, non stratified rocks.

- Second mining of soft/medium hard blocks.

C. BLUNT (FLAT-END)

- Suitable for breaking blocks of up to medium hardness or to cut the size of small blocks.

D. CONE

- Universal.

E. WIDE CHISEL

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32 | GB HYDRAULIC BREAKERS

Operation

ADJUSTER VALVE SETTING (SPEED CONTROL) :

C.C.W C.W

Nut

OPERATION7 

WARNING

CLOSE THE FRONT SCREEN/SPLINTER PROTECTION ON THE DRIVER’S CAB TO PREVENT

POSSIBLE INJURY FROM FLYING ROCK SPLINTERS DURING BREAKER OPERATION.

IF NOISE LEVELS EXCEED 90 DB(A), ALL PERSONS IN THE IMMEDIATE AREA, INCLUDING THE

EXCAVATOR DRIVE, MUST WEAR HEARING PROTECTION AND HELMET.

THE HYDRAULIC BREAKER SHOULD ONLY BE OPERATED FROM THE DRIVER’S SEAT AND

SHOULD NOT BE PUT INTO OPERATION UNTIL BOTH EXCAVATOR AND BREAKER ARE IN THECORRECT POSITION.

SHUT OFF THE HYDRAULIC BREAKER IMMEDIATELY IF ANYONE MOVES INTO THE DANGER AREA,

AS THERE IS A RISK OF FLYING ROCK SPLINTERS.

WHEN WORKING WITH A HYDRAULIC BREAKER, OPERATION OF THE EXCAVATOR IS GOVERNED

BY THE MANUFACTURER’S SAFETY REGULATIONS.

WARNING

WHEN WORKING IN TEMPERATURE CONDITIONS OF LOWER THAN MINUS 20℃, THE HYDRAULIC

BREAKER SHOULD NOT BE PUT INTO OPERATION WHILST THE HYDRAULIC OIL IS STILL COLD.OPERATING THE BREAKER WITH COLD HYDRAULIC OIL MAY CAUSE THE SEALS IN THE

HYDRAULIC BREAKER TO TEAR THE DIAPHRAGM IN THE HIGH-PRESSURE ACCUMULATOR.

OBSERVE THE MANUFACTURER’S REGULATIONS

If the adjuster is turned fully clockwise, then the breaker will cease to operate.

CAUTION

▶Turning when fully closed (Clockwise direction)

5T

2~3

Model

TurningPosition

6T

4.5�5.5

8AT(7T)8AF

2~3

8T8F, 9F

1.5�2.5

150

3~4

11F

1.5�2.5

14F

3.5�4.5

① Please loosen nut with spanner

② Adjuster setting

Turn adjuster clockwise for low speed operation.

Turn adjuster operation counterclockwise for high speed③ When adjuster setting is over and tighten nut with

spanner

④ Valve adjuster turning position

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Operation

2. PROPER THRUST

1. To use the breaking force of a breaker effectively, a proper thrust has to be applied to the breaker. If the

thrust is insufficient, a hammering energy of the piston will not be efficiently used for breaking rocks. Thus,

the hammering force applies shock to the breaker body, arm and boom of the base machine, etc, resulting indamage to those parts.

2. On the other hand, if thrust is excessive and breaking is performed with the front of the base machine raised,

the machine may suddenly tilt forward at the moment the rock is broken and the breaker body may violently

hit against the rock resulting in damage.

3. If hammering is performed under such a condition, vibrations during hammering may also be transmitted to

the tracks, and therefore, hammering in such a manner should be avoided to also protect the tracks. Further,

during hammering, take care to always apply a thrust to the breaker. Do not hammer with no thrust applying.

1. OPERATION METHOD

1. When the tool is firmly stabilised on the rock and the

breaker has been pressed down, the operation valve can

be opened. While breaking, pressure must always be

applied longitudinally on the tool.

2. Close the operating valve immediately when cracks

appear on the rock or when the tool begins to move out of

the body of the breaker.

Pressing

During hammeringoperation, applypressuresuccessively.

Stop hammeringimmediately afterthe material isbroken.

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34 | GB HYDRAULIC BREAKERS

3. PRECAUTIONS IN OPERATION

3-1. Avoid blank hammering.

To prevent blank hammering, the impacting power must be always applied in longitudinal direction to the tool.

Pressing

Pressing

Pressing

CORRECT BLANK HAMMERING

Pressing

The tool is pushed up by applyingthe impacting power.

Since no impacting power isapplied, the tool lowers.

Operation

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GB INDUSTRIES CO., LTD. | 35

Operation

Up to here. tool

Do not operatein the water.

3-2. Excess power should not be applied to the tool.

The breaker and the tool assembly should not

be used as a lever or a rip. It is not designed

for this purpose and the tool is likely to be

broken or the tool holder damaged.

3-3. Firm materials should be cracked from the edges.

If the tool fails to penetrate or produce any

breaking of the material after being operated in

one spot for 30 seconds to one minute, then

change the tool position.

Crackingfrom edge.

3-4. Do not operate the breaker in water and mud.

- Do not operate the breaker with the

components other than the tool immersed in

water or mud. The piston or similar

components may be rusted to result in a

prematurely damaged breaker.

- In case of operation in/under the water, use

the under-water-type breaker

specially/independently ordered.

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36 | GB HYDRAULIC BREAKERS

3-5. Operate carefully not to hit the excavator with the tool.

3-6. Keep optimum blows.

GB Hydraulic Breakers have a control valve for blows, please adjust blows with the control valve for blows

according to the field condition.

3-7. Working in high temperature conditions.

Check the oil temperature constantly to ensure it does not exceed 175℉(80℃). If higher temperatures aremeasured in the tank, an oil cooler must be fitted.

Operation

Don’t hit

Find trouble at an early stage!!

3-8. Do not move rocks.

Avoid moving rocks with the side of the

bracket. It is the major factor to bolts

installed on the bracket breaking. It will

also cause damage to the tool, boom and

arm.

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Operation

3-9. Do not use tool as a lever.

If breaking rocks by using tool as a lever, the

bolts and tool may break.

3-10. Do not continue to hammer for more than one minute.

When rocks are not broken after more than one minute of hammering at the same point, change the place to

be hammered. Extended hammering at the same place causes the tool to wear out excessively.

3-11. Operate breaker at proper engine speed.

Break rocks at the specified engine speed.

Raising engine speed more than necessary

does not strengthen hammering force but

increases oil temperature to the detriment of

pistons and valves.

3-12. Do not allow the breaker to drop onto break a rock.

Dropping the breaker onto a rock will apply

excessive force to the breaker or the base

machine, causing damage to many parts of

the breaker and base machine.

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38 | GB HYDRAULIC BREAKERS

Hammering with each base machine cylinder

moved to it’s stroke end(fully extended or

retracted) will do considerable damage to the

cylinder and each part of the base machine.

3-13. Do not hammer with base machine cylinders moved to the stroke end.

Lifting materials by hanging wire in the bracket

or tool not only causes damage to the breaker

but also is very dangerous when operating.

3-14. Do not lift things with the breaker.

Operation

3-15. Warm up base machine engine prior to operation.

Especially in winter, the base machine engine should be warmed up for five to ten minutes (about oil

temperature 30℃�40℃ /80℉�105℉) before breaker operation. Follow the base machine instruction book forwarming-up of the engine.

3-16. Do not touch the tool during hydraulic breaker operation.

During breaker operation, the breaker parts can reach high temperatures and thus should not be touched.

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Inspection and maintenance

INSPECTION AND MAINTENANCE8 

WARNING

● WHEN DISASSEMBLING OR REPAIRING THE BREAKER : THE CHARGING VALVE PLUG MAY COME

OFF DUE TO GAS PRESSURE. THIS IS VERY DANGEROUS. BE SURE TO RELEASE GAS OUT FROM

THE CHARGING VALVE PLUG BEFORE DISASSEMBLING. BEFORE FILLING THE CHARGING VALVE

PLUG WITH GAS, BE SURE TO COMPLETELY TIGHTEN THE BOLT.

● WHEN REPLACING THE GAS VALVE : THE GAS VALVE BODY MAY COME OFF DUE TO GAS

PRESSURE. BE SURE TO COMPLETELY RELEASE INTERNAL GAS OUT BEFORE REPLACING THE

GAS VALVE.● WHEN FILLING THE GAS CUSHION CHAMBER OR THE HEAD CAP WITH NITROGEN GAS : THE

TOOL MAY JUMP OUT. TO AVOID ACCIDENTS, DO NOT STAND IN FRONT OF THE TOOL.

● BEFORE SERVICING, MAKE SURE RESIDUAL HYDRAULIC PRESSURE IS RELEASED.

IMPORTANT

USE ONLY THE HOSE NOZZLE TO RELIEVE THE PRESSURE : USING NAILS, SCREWDRIVERS OR

SIMILAR OBJECTS WILL DAMAGE THE FILLING VALVE.

Inspection Item

● Looseness, missing and/or

damage to bolts and nuts

●Tid rods

●Bracket mounting bolts

●Accumulator bolts

● Looseness of hose fittings.

Visible damage to hosesand oil leakage

●Hydraulic pipes for breaker

●Oil hoses

●Abnormal oil leakage   ●Connections of back head and cylinder

●Clearance between front head & tool

●Replacement of seal kit :

every 600 hours

Every day

Every day

Every day

Every day

Inspection PointInspection

Interval

HYDRAULIC BREAKER MAINTENANCE LIST AND POINT

● Abnormal wear and cracks

on tool

●Tool

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Valve adjuster direction

Open Close

GB INDUSTRIES CO., LTD. | 41

Inspection and maintenance

Part Unit GB150 GB8AFSECTION \ MODEL

Tid rod fixing torque

Accumulator

fixing bolt

Accumulator charging

plug fixing Torque

Socket bolt fixing

torque

Side bolt fixing torque

Back head N2 gas

pressure (at 20℃ / 68℉)

Accumulator N2 gaspressure (at 20℃ / 68℉)

Valve adjuster turningposition (0 turning whenfully closed)

170~200

60~65

8~12

20~25

200~230

3~4

250~270

60~65

8~12

30~40

250~270

1.5~2.5

GB9F

250~270

60~65

8~12

30~40

250~270

1.5~2.5

GB11F

270~300

60~65

8~12

40~45

320~350

1.5~2.5

GB14F

270~300

60~65

8~12

40~45

320~350

3.5~4.5

F-SERIES

T-SERIES

16~17

227~241

16~17

227~241

GB8F

200~230

60~65

8~12

30~40

230~250

2~3

16~17

227~241

16~17

227~241

16~17

227~241

16~17

227~241

A

B

C

D

E

F

G

H

kg.m

kg.m

kg.m

kg.m

kg.m

-

InspectionInterval

Every week

Every week

Every week

Every week

Every day

Every week

Every week58~63

824~895

54~55

767~782

54~55

767~782

54~55

767~782

54~55

767~782

58~63

824~895

kg/cm2

(psi)

kg/cm2

(psi)

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42 | GB HYDRAULIC BREAKERS

Tool

2. WEARING PARTS

2-1. The following items are considered as wearing parts.When damaged or worn, it is highly recommended to repair/replace these items.

 ① Tool

 ② Lower bush

 ③ Retainer pins

 ④ Hydraulic seals

 ⑤ Side bolt

 ⑥ Hydraulic hoses

2-2. Replace hydraulic seals every 600 hours of actual operation.

2-3. Tool retainerWhen each tool retainer is excessively deformed, it is difficult to replace the tool. Therefore, every 100 to

150 hours of operation, change the face of each tool retainer which comes in contact with the tool(The

two faces of each pin can be used).

If the tool you use is not a genuine part, we can not guarantee the performance of the breaker parts.

When replacing, check each part for wear, breakage, scoures, etc., especially, after removing burrs and

swelling on tool retainer and tool.

Replace tool after grinding the worn parts of lower bush and stop pin.

When changing tool pin direction, place pin with this surface on tool side.

Remove burrs and swellingwith grinder or the like.

Tool Retainer

2-4. Lower bushWear Limit of Tool and Lower Bush :

When the clearance between the tool and lower

bush becomes large, it is strongly recommended to

replace these to prevent other parts from wear.

Exceeding the wear limit dimension clearance may

damage other component parts, such as pistons

and cylinders.

Wear LimitDimension

6mm

6mmWear LimitDimension

Inspection and maintenance

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GB INDUSTRIES CO., LTD. | 43

Inspection and maintenance

3. OPERATIONAL PRESSURE

If the operating pressure of the breaker is regular and the pressure of the excavator itself is regular,

pressure does not need to be applied by attaching a relief valve to the high pressure line of the breaker.

Please get the help of the service department for applying pressure.

If the pressure is over regular pressure the breaker gets more impact which makes it a problem on the

breaker and the excavator.

4. OIL TEMPERATURE

The oil temperature will vary depending on operational conditions but it should range 50�80℃.

If it is over 80℃ it makes the accumulator rubber and o-ring’s life span shorter. Be cautious of the

following to avoid the rise in oil temperature.

1. Avoid continuous blowing at the same point over one minute.

2. Keep the indicated engine rotation.

The amount of oil needed in the breaker within the operational pressure is regular. In spite of more

engine rotation the blow frequency does not increase, rather the oil flows out by the relief valve. Thus

oil temperature will rise and the continued ratio becomes high.

NB : Indicated Engine Rotation

While hammering the breaker, if the engine rotation increases to some degree, it ceases to increase.

“This stage of rotation is the indicated engine rotation.”

3. Keep the cooler clean.

Keep the cooler clean to avoid falling a cooling effect.

5. OIL LEAKAGE

Check for oil leakages periodically. Minimum oil leakage, out of drain plug and between tool and tool

holder, should be disregarded as it helps keep the tool greased.

In cases of a lot of leakage check and replace the packings. Apply the working oil to the work-ing

packing, o-ring, gas-seal, dust seal and packing groove.

Applying grease(recommend cylinder grease) to o-ring is especially effective.

WHEN REPLACING THE PACKINGS THE FOLLOWING SHOULD BE INSPECTED.

1. Check if there are any scratches on the packings. Check that they are well pressed and not pushed

out.

2. Be cautious of dirt of flow.

3. If the working packing gets damaged, check the packing and stroke piston.

4. And also check if the dust seal has been pushed out or wrongly connected or if there are any

scratches in the cylinder.

5. When the working packing and gas-seal is damaged oil will leak out.

Replace each packing and o-ring. Contact your local service dealer for assistance.

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44 | GB HYDRAULIC BREAKERS

Trouble shooting guide

TROUBLE SHOOTING GUIDE9 

SYMPTOM

No blow out

1. Excessive back head gas pressure

2. Stop valve(s) closed

3. Lack of hydraulic oil

4. Wrong adjustment of pressurereducing valve

5. Faulty hydraulic hose connection

6. Oil back head infection

1. Re-adjust nitrogen gas pressure

2. Open stop valve

3. Fill hydraulic oil

4. Re-adjustment valve5. Tighten or replace

6. Replace back head o-ring, or cylinder

bush step seal

Low impact power

1. Line leakage or blockage

2. Clogged tank return line filter

3. Lack of hydraulic oil

4. Hydraulic oil contamination, or heat

deterioration

5. Poor main pump performance

6. Back head nitrogen gas low

7. Low flow rate by mis-adjustment offlow control pressure reduction valve

8. Chisel out of range for blowing

position

1. Check lines

2. Wash filter, or replace

3. Fill hydraulic oil

4. Replace hydraulic oil, rinse tank and

replace hydraulic oil inside lines

5. Call an authorized service man

6. Refill nitrogen gas

7. Re-adjust reduction valve8. Rush down chisel by excavator

operation

Irregular impact

1. Low accumulator gas pressure, of

bad accumulator

2. Bad piston or valve sliding surface

3. Piston moves down/up to blank

blow hammer chamber

1. Refill nitrogen gas

2. Call an authorized service man

3. Rush down chisel by excavator

operation

Bad chiselmovement

1. Chisel diameter incorrect

2. Chisel and pin jammed from chisel

pin wear3. Jammed front bush and chisel

4. Deformed chisel and piston contact

area

1. Replace chisel with genuine

replacement parts

2. Smoothen rough surface of chisel3. Smoothen rough surface of front

bush interior

4. Replace chisel

Sudden reduction

power and pressure

line vibration

1. Accumulator gas leakage

2. Accumulator diaphragm damage

1. Replace o-ring, or refill nitrogen gas

2. Replace diaphragm

Oil leakage leak

between front head

and chisel

1. Cylinder seal worn 1. Replace seal

Gas leakage 1. O-ring damage in related parts 1. Replace relevant o-ring

1. PROBLEMS IN OPERATION

If the breaker does not work or blow frequency and blow power get worse, check the arranged method.

And then inspect according to the following order.

CAUSE REQUIRED ACTION

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GB INDUSTRIES CO., LTD. | 45

Trouble shooting guide

RELATION OF GAS PRESSURE, IMPACT ENERGY AND FREQUENCY

2. GAS LEAKAGE

Gas pressure low

Lack of Impacting Power

No Breaker Function

Low Blow Frequency

Gas pressure high

TROUBLE CAUSE REMEDY

A. Gas leakage from the top ofcharging valve

Defective o-ring in charging valve

Defective or damaged in chargingvalve

Replace

Repair or replace chargingvalve

B. Gas leakage betweencharging valve and back head

Defective o-ring in charging valve

Charging valve loose in back head

Replace

Re-tighten

C. Gas leakage between cylinderand back head

Defective o-ring in back head Replace

D. Gas leakage from drain plughole

Defective gas seal in seal retainer Replace

Defective step seal in seal retainer Replace

Seizing of piston and seal retainer Repair or replace seal retainerand piston.

(When repaired replacepacking)

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46 | GB HYDRAULIC BREAKERS

Trouble shooting guide

3. OIL LEAKAGE

AREA OF OIL LEAKAGE CONDITION CAUSES & REMEDIES

Between the tool andlower bush

A A large amount of oil is leaking.Check if it is coming from oil orgrease.

Seals damaged

REPLACE

RETIGHTEN

RETIGHTEN

Surface of breakerB Oil leaking from hose and maleadapter portion

Loose breaker hoses andmale adapter

Accumulator andsurface of cylinder

C Oil leakage from reassembly ofaccumulator after overhaul

Loose accumulator socket bolt

RETIGHTEN

REPLACE

Loose tie rod nuts�

Between main valve &surface of cylinder

D Oil leakage from reassembly ofbreaker after overhaul

NORMAL :- Clean oil- Check that seal is damaged- Replace with new seal

Between cylinder andfront head

F Oil is leaking

Damaged o-ring

Between cylinder andback head

E Oil leakage

REPLACEOil leaks again

Replace damaged seals

Even if oil is leaking, there is no use to replacing parts at all times. Check the following points listed in the

chart below. The user can check the () marked points before calling dealer.

BD   C

F   A

E

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GB INDUSTRIES CO., LTD. | 47

T-SERIES

GBM60/GBM90/GB1T/GB2T/GB3TP

- BREAKER BODY ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 48

- SIDE PLATE TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙51

- BOX TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙53

- SIDE TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙55

- UNIRAM TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙57

- BACKHOE TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙59

GB4T/GB5T/GB6T/GB8AT(GB7T)/GB8T

- BREAKER BODY ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 60

- SIDE PLATE TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙63

- BOX TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙64

- SIDE TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙68

- UNIRAM TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙69

- TRENCH TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙70

F-SERIES

GB150/GB8AF/GB8F/GB9F/GB11F/GB14F

- BREAKER BODY ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 71

- SIDE PLATE TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙74

- BOX TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙75

- SIDE TYPE BRACKET ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙79

PART LIST

Specifications are subject to change without prior notice.

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48 | GB HYDRAULIC BREAKERS

GBM60/GBM90/GB1T/GB2T/GB3TP

BREAKER BODY | GBM60, GBM90, GB1T, GB2T, GB3TP

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GB INDUSTRIES CO., LTD. | 49

GBM60/GBM90/GB1T/GB2T/GB3TP

PART NAMEGBM60

PART NO. Q’TYREMARKSNO.

PART LIST

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

1

3

3

1

1

1

2

2

2

1

1

1

1

2

2

1

4

1

1

1

1

1

1

1

1

1

1

1

2

4

1

1

3

3

1

1

1

2

2

2

1

1

1

1

2

1

4

1

1

1

1

1

1

1

1

1

1

1

2

4

1

1

3

3

1

1

2

2

2

1

1

1

1

2

4

1

1

1

1

1

1

1

1

1

1

1

2

4

1

1

3

3

1

1

2

2

2

1

2

1

1

1

2

2

4

1

1

1

1

1

1

1

1

1

1

1

2

4

1

1

3

3

1

1

2

2

2

1

2

1

1

1

2

2

4

1

1

1

1

1

1

1

1

1

1

1

2

4

1

CYLINDER ASS'Y

CYLINDER

SOCKET PLUG (TEFLON PLUG)

O-RING

DUST SEAL

U-PACKING

BUFFER RING

MALE ADAPTER

O-RING

UNION CAP

AIR CHECK VALVE

O-RING

PISTON

SEAL RETAINER ASS'Y

SEAL RETAINER

GAS SEAL

STEP SEAL (U-PACKING)

O-RING

BUFFER RING

O-RING

VALVE ASS’Y

VALVE

VALVE PLUG

O-RING

O-RING

VALVE SLEEVEBACK HEAD ASS'Y

BACK HEAD

BACK HEAD CHARGING VALVE

CHARGING VALVE PLUG

O-RING

FRONT HEAD ASS’Y

FRONT HEAD

LOWER BUSH

BUSH PIN

SPRING PIN (S)

SPRING PIN (L)

NO.1~11

NO.13~18

NO.19~23

NO.24~27

NO.28~39

M6011000

M6011010

ST12073

OP13003

SD12015

SU12043

SB12030

EM14040

OP13008

EU14048

OP13007

M6012010

M6013000

M6013010

SG12001

SS12062

OA13065

SB12029

OG13040

M9015000

M9015020

M9015030

OP13014

OG13054

M9015040M6016000

M6016010

EV14036

EV14037

OP13071

M6017000

M6017010

M6017020

M6017040

ES14007

ES14008

M9011000

M9011010

ST12073

OP13003

SD12016

SU12045

SB12032

EM14040

OP13008

EU14048

OP13007

M9012010

M9013000

M9013010

SG12002

SU12044

SB12031

OG13040

M9015000

M9015020

M9015030

OP13014

OG13054

M9015040M9016000

M9016010

EV14036

EV14037

OP13071

M9017000

M9017010

M9017020

M9017040

ES14007

ES14008

01T11000

01T11010

BS11019

OP13003

SD12017

SU12047

EM14040

OP13008

EU14048

OP13007

01T12010

01T13000

01T13010

SG12003

SU12046

OG13041

01T15000

01T15020

01T15030

OP13016

OG13030

01T1504001T16000

01T16010

EV14036

EV14037

OP13071

01T17000

01T17010

01T17020

01T17030

ES14009

ES14008

02T11000

02T11010

BS11013

OP13006

SD12018

SU12048

EM14040

OP13008

EU14048

EV14039

OP13007

02T12010

02T13000

02T13010

SG12004

SS12063

OA13055

OA13054

02T15000

02T15020

02T15030

OG13033

OG13031

02T1504002T16000

02T16010

EV14036

EV14037

OP13071

02T17000

02T17010

02T17020

02T17030

ES14010

ES14011

03T11000

03T11010

BS11013

OP13006

SD12018

SU12048

EM14040

OP13008

EU14048

EV14039

OP13007

03T12010

02T13000

02T13010

SG12004

SS12063

OA13055

OA13054

03T15000

03T15020

03T15030

OP13020

OG13031

03T1504003T16000

03T16010

EV14036

EV14037

OP13071

03T17000

03T17010

03T17020

03T17030

ES14010

ES14011

GBM90

PART NO. Q’TY

GB1T

PART NO. Q’TY

GB2T

PART NO. Q’TY

GB3TP

PART NO. Q’TY

Page 52: GB RockBreaker Manual

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50 | GB HYDRAULIC BREAKERS

GBM60/GBM90/GB1T/GB2T/GB3TP

PART NAMEGBM60

PART NO. Q’TYREMARKSNO.

33

34

35

36

37

38

39

40

41

42

43

1

1

1

1

1

4

4

4

1

1

1

1

1

1

1

1

1

1

4

4

4

1

1

1

1

1

1

1

1

1

1

4

4

4

4

1

1

1

1

1

1

1

1

1

4

4

4

1

1

1

1

1

1

1

1

1

4

4

4

1

1

1

1

1

1

UPPER BUSH

TOOL RETAINER

AIR CHECK VALVE

O-RING

HOLLOW PLUG

GREASE NIPPLE

HELI SERT COIL

TIE ROD ASS'Y

TIE ROD

HEX NUT

WASHER

TOOL (WEDGE)

TOOL (MOIL POINT)

TOOL (BLUNT)

TOOL (CONE)

TOOL (PILE HAMMER)

SEAL KIT ASS'Y

NO.40~42

OPTION

OPTION

OPTION

OPTION

OPTION

OPTION

OPTION

M6017060

M6017070

EV14038

OP13005

EG14031

M6018000

M6018010

M6018020

M6018030

M6019010

M6019020

M6019030

M6019040

M6019050

M6030000

M9017060

M9017070

EV14038

OP13005

EG14031

M9018000

M9018010

M9018020

M9018030

M9019010

M9019020

M9019030

M9019040

M9019050

M9030000

01T17060

01T17070

EV14038

OP13005

EG14031

22E11120

01T18000

01T18010

01T18020

01T18030

01T19010

01T19020

01T19030

01T19040

01T19050

01T30000

02T17060

02T17070

EH14032

EG14031

02T18000

02T18010

02T18020

02T18030

02T19010

02T19020

02T19030

02T19040

02T19050

02T30000

03T17060

03T17070

EH14032

EG14031

03T18000

03T18010

03T18020

03T18030

03T19010

03T19020

03T19030

03T19040

03T19050

03T19060

03T30000

GBM90

PART NO. Q’TY

GB1T

PART NO. Q’TY

GB2T

PART NO. Q’TY

GB3TP

PART NO. Q’TY

Page 53: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 51

GBM60/GBM90/GB1T/GB2T/GB3TP

SIDE PLATE TYPE BRACKET | GBM60, GBM90

PART NAME GBM60 GBM90PART NO. PART NO.Q’TY Q’TY

REMARKSNO.

PART LIST

1

2

3

4

5

6

7

1

1

10

10

10

20

10

2

2

1

1

10

10

10

20

10

2

2

FRAME (LH)

FRAME (RH)

SIDE HEX BOLT ASS’Y

SIDE HEX BOLT

SPRING WASHER

HEX BOLT

HEX NUT

SPRING WASHER

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

NO. 3~4

M6021010

M6021020

M6021100

BH11024

BH11065

BH11025

BH11054

BH11065

OPTION

OPTION

M9021010

M9021020

M9021100

BH11028

BH11066

BH11025

BH11054

BH11065

OPTION

OPTION

Page 54: GB RockBreaker Manual

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52 | GB HYDRAULIC BREAKERS

GBM60/GBM90/GB1T/GB2T/GB3TP

SIDE PLATE TYPE BRACKET | GB1T, GB2T, GB3TP

PART NAMEGB1T GB2T GB3TP

PART NO. PART NO. PART NO.Q’TY Q’TY Q’TY

REMARKSNO.

PART LIST

1

2

3

4

5

6

7

8

1

1

4

4

4

10

20

10

1

1

4

4

4

10

20

10

2

2

1

1

4

4

4

10

20

10

2

2

FRAME (LH)

FRAME (RH)

SIDE BOLT ASS’Y

SIDE BOLT

CAP NUT

SPRING WASHER

HEX BOLT

HEX NUT

SPRING WASHER

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

No. 3~5

01T21010

01T21020

01T21100

BH11030

BH11050

BH11068

BH11025

BH11054

BH11065

OPTION

OPTION

02T21010

02T21020

02T21100

BH11032

BH11051

BH11069

BH11025

BH11054

BH11065

OPTION

OPTION

03T21010

03T21020

03T21100

BH11033

BH11051

BH11069

BH11025

BH11054

BH11065

OPTION

OPTION

Page 55: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 53

GBM60/GBM90/GB1T/GB2T/GB3TP

BOX TYPE BRACKET | GBM60, GBM90, GB1T, GB2T, GB3TP

Page 56: GB RockBreaker Manual

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54 | GB HYDRAULIC BREAKERS

GBM60/GBM90/GB1T/GB2T/GB3TP

PART NAMEGBM60

PART NO. Q’TYREMARKSNO.

PART LIST

GBM90

PART NO. Q’TY

GB1T

PART NO. Q’TY

GB2T

PART NO. Q’TY

GB3TP

PART NO. Q’TY

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1

1

8

16

8

1

4

4

1

1

2

4

1

22

1

1

8

16

8

1

4

4

1

1

2

2

2

1

22

1

1

8

16

8

1

4

4

1

1

2

2

2

1

22

1

1

10

16

8

1

4

4

1

1

2

2

2

1

2

22

1

1

10

20

10

1

4

4

1

1

2

2

2

1

2

22

FRAME

COVER PLATE

HEX BOLT

HEX NUT

SPRING WASHER

MC COVER (A)

SOCKET BOLT

LOCKING WASHER

BOX DAMPER

UPPER DAMPER

COVER DAMPER

RUBBER CAP (2)

RUBBER CAP (1)

RUBBER CAP (G1)

HOSE GUIDE

OIL HIGH PRESSURE HOSEOIL HOSE PLUG

M6022010

M6022020

BH11025

BH11054

BH11065

M6022410

BS11001

BL11075

M6022280

M9022220

EC14021

ER14012

ER14025

OPTIONOPTION

M9022010

M6022020

BH11025

BH11054

BH11065

M9022410

BS11001

BL11075

M9022280

M9022220

EC14021

ER14013

ER14012

ER14025

OPTIONOPTION

01T22010

01T22020

BH11025

BH11054

BH11065

01T22410

BS11001

BL11075

01T22280

01T22220

EC14021

ER14013

ER14012

ER14025

OPTIONOPTION

02T22010

02T22020

BH11025

BH11054

BH11065

02T22410

BS11001

BL11075

02T22280

02T22220

EC14021

ER14013

ER14012

ER14025

EH14027

OPTIONOPTION

03T22010

02T22020

BH11025

BH11054

BH11065

03T22410

BS11001

BL11075

03T22280

02T22220

EC14021

ER14013

ER14012

ER14025

EH14027

OPTIONOPTION

Page 57: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 55

GBM60/GBM90/GB1T/GB2T/GB3TP

SIDE TYPE BRACKET | GBM60, GBM90

1

2

3

4

5

6

7

8

9

10

11

12

1

1

1

1

1

10

10

1

2

2

2

4

2

2

FRAME (LH)

FRAME (RH)

SIDE BOLT ASS’Y

SIDE BOLT

CAP NUT

SPRING WASHER

SIDE HEX BOLT

SPRING WASHER

DISTANCE PIPE

BRACKET PIN ASS’Y

PIN

STOP RING

HEX BOLT

HEX NUT

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

M6023010

M6023020

M6023100

BH11026

BH11048

BH11067

BH11024

BH11065

M6023060

M6023200

M6023210

M6023220

BH11027

BH11055

OPTION

OPTION

1

1

1

1

1

10

10

1

2

2

2

4

2

2

M9023010

M9023020

M9023100

BH11026

BH11048

BH11067

BH11028

BH11066

M9023060

M9023200

M9023210

M9023220

BH11027

BH11055

OPTION

OPTION

NO. 3~5, 8

NO. 9~12

(OPTION)

(OPTION)

(OPTION)

(OPTION)

PART NAMEGBM60 GBM90

PART NO. PART NO.Q’TY Q’TYREMARKSNO.

PART LIST

Page 58: GB RockBreaker Manual

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56 | GB HYDRAULIC BREAKERS

GBM60/GBM90/GB1T/GB2T/GB3TP

SIDE TYPE BRACKET | GB1T, GB2T, GB3TP

PART NAMEGB1T GB2T GB3TP

PART NO. PART NO. PART NO.Q’TY Q’TY Q’TYREMARKSNO.

PART LIST

1

2

3

4

5

6

7

8

9

10

1

1

5

5

5

1

2

2

2

4

2

2

1

1

5

5

5

1

2

2

2

4

2

2

1

1

5

5

5

1

2

2

2

4

2

2

FRAME (LH)

FRAME (RH)

SIDE BOLT ASS’Y

SIDE BOLT

CAP NUT

SPRING WASHER

DISTANCE PIPE

BRACKET PIN ASS’Y

PIN

STOP RING

HEX BOLT

HEX NUT

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

NO. 3~7

NO. 7~10

(OPTION)

(OPTION)

(OPTION)

(OPTION)

01T23010

01T23020

01T23100

BH11030

BH11050

BH11068

01T23060

01T23200

01T23210

01T23220

BH11027

BH11055

OPTION

OPTION

02T23010

02T23020

02T23100

BH11032

BH11051

BH11069

02T23060

02T23200

02T23210

02T23220

BH11034

BH11056

OPTION

OPTION

03T23010

03T23020

03T23100

BH11033

BH11051

BH11069

03T23060

03T23200

03T23210

03T23220

BH11034

BH11056

OPTION

OPTION

Page 59: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 57

GBM60/GBM90/GB1T/GB2T/GB3TP

UNIRAM TYPE BRACKET | GBM60, GBM90

1

2

3

4

5

6

7

1

1

1

1

1

10

10

2

2

FRAME (LH)

FRAME (RH)

SIDE BOLT ASS’Y

SIDE BOLT

CAP NUT

SPRING WASHER

SIDE HEX BOLT

SPRING WASHER

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

M6025010

M6025020

M6025100

BH11026

BH11049

BH11067

BH11024

BH11065

OPTION

OPTION

1

1

1

1

1

10

10

2

2

M9025010

M9025020

M9025100

BH11026

BH11049

BH11067

BH11028

BH11066

OPTION

OPTION

NO. 3~5

PART NAMEGBM60 GBM90

PART NO. PART NO.Q’TY Q’TYREMARKSNO.

PART LIST

Page 60: GB RockBreaker Manual

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58 | GB HYDRAULIC BREAKERS

GBM60/GBM90/GB1T/GB2T/GB3TP

UNIRAM TYPE BRACKET | GB1T, GB2T, GB3TP

PART NAMEGB1T GB2T GB3TP

PART NO. PART NO. PART NO.Q’TY Q’TY Q’TYREMARKSNO.

PART LIST

1

2

3

4

5

1

1

4

4

4

2

2

1

1

4

4

4

2

2

1

1

4

4

4

2

2

FRAME (LH)

FRAME (RH)

SIDE BOLT ASS’Y

SIDE BOLT

CAP NUT

SPRING WASHER

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

NO. 3~5

01T25010

01T25020

01T25100

BH11030

BH11050

BH11068

OPTION

OPTION

02T25010

02T25020

02T25100

BH11032

BH11051

BH11069

OPTION

OPTION

03T25010

03T25020

BH11033

BH11051

BH11069

OPTION

OPTION

Page 61: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 59

GBM60/GBM90/GB1T/GB2T/GB3TP

BACKHOE TYPE BRACKET | GB3TP

PART NAME PART NO. Q’TY REMARKSNO.

PART LIST

1

2

3

4

5

1

1

4

4

4

2

2

FRAME (LH)

FRAME (RH)

SIDE BOLT ASS’Y

SIDE BOLT

CAP NUT

SPRING WASHER

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

NO. 3~5

03T26010

03T26020

03T26100

BH11033

BH11051

BH11069

OPTION

OPTION

Page 62: GB RockBreaker Manual

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60 | GB HYDRAULIC BREAKERS

GB4T/GB5T/GB6T/GB8AT(GB7T)/GB8T

BREAKER BODY | GB4T, GB5T, GB6T, GB8AT(GB7T), GB8T

Page 63: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 61

GB4T/GB5T/GB6T/GB8AT(GB7T)/GB8T

PART NAMEGB4T

PART NO. Q’TYREMARKSNO.

PART LIST

GB5T

PART NO. Q’TY

GB6T

PART NO. Q’TY

GB8AT(GB7T)

PART NO. Q’TY

GB8T

PART NO. Q’TY

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

2425

26

27

28

29

30

31

31-1

32

1

3

3

1

1

1

2

2

2

1

1

2

1

1

1

2

2

4

1

1

1

1

1

1

1

1

3

4

1

1

1

1

1

1

1

1

1

2

2

2

1

1

2

1

1

1

2

4

1

1

1

1

1

1

1

1

3

3

1

1

1

1

1

1

1

2

2

2

2

1

2

1

1

1

2

2

31

1

1

1

1

1

1

1

1

3

3

1

1

1

1

1

2

1

2

2

2

2

1

2

1

1

1

2

2

31

1

1

1

1

1

1

1

1

1

3

3

1

1

1

1

1

2

1

2

2

2

2

1

2

1

1

1

2

2

31

1

1

1

1

1

1

1

1

CYLINDER ASS’Y

CYLINDER

SOCKET PLUG

O-RING

DUST SEAL

U-PACKING

BUFFER SEAL

VALVE ADJUSTER

O-RING

BACK UP RING

HEX NUT

ADJUSTER SOCKET

O-RING

MALE ADAPTER

O-RING

UNION CAP

DOWEL PIN

AIR CHECK VALVE

O-RING

PISTON

SEAL RETAINER ASS’Y

SEAL RETAINER

GAS SEAL

STEP SEAL (U-PACKING)

O-RING

O-RINGBACK UP RING

VALVE ASS’Y

VALVE

VALVE PLUG

O-RING

O-RING

VALVE SLEEVE

BACK HEAD ASS’Y

BACK HEAD

BACK HEAD (BOX)

BACK HEAD CHARGING VALVE

No.1~18

No.20~25

No.26~30

No.31~34

04T11000

04T11010

BS11014

OP13007

SD12019

SU12049

SB12034

EM14041

OP13010

EU14049

22E11070

EV14039

OP13007

04T12010

04T13000

04T13010

SG12005

SS12064

OA13056

OG13045

04T15000

04T15020

04T15030

OG13034

OG13031

04T15040

04T16000

04T16010

EV14036

05T11000

05T11010

BS11015

OP13009

SD12020

SU12051

SB12035

05T11030

OP13002

BP20001

BH11078

05T11110

OP13014

EM14041

OP13010

EU14049

22E11070

EV14039

OP13007

05T12010

05T13000

05T13010

SG12006

SU12050

OG13046

05T15000

05T15020

05T15030

OP13022

OG13032

05T15040

05T16000

05T16010

EV14036

06T11000

06T11010

BS11016

OP13009

SD12022

SU12053

SB12037

06T11030

OP13002

BP20001

BH11078

EM14042

OP13013

EU14050

22E11070

EV14039

OP13007

06T12010

06T13000

06T13010

SG12008

SS12066

OA13058

OG13047BG20020

06T15000

06T15020

06T15030

OG13038

OG13034

06T15040

06T16000

06T16010

EV14036

08AT11000

08AT11010

BS11016

OP13009

SD12023

SU12055

SB12038

08T11030

OP13003

BP20002

BH11079

EM14043

OP13019

EU14050

22E11070

EV14039

OP13007

08AT12010

08T13000

08T13010

SG12011

SS12069

OA13060

OG13049BG20009

08AT15000

08AT15020

08AT15030

OG13040

OG13035

08AT15040

08AT16000

08AT16010

08AT16110

EV14036

08T11000

08T11010

BS11017

OP13011

SD12023

SU12055

SB12038

08T11030

OP13003

BP20002

BH11079

EM14043

OP13019

EU14050

22E11070

EV14039

OP13007

08T12010

08T13000

08T13010

SG12011

SS12069

OA13060

OG13049BG20009

08T15000

08T15020

08T15030

OG13041

OG13034

08T15040

08T16000

08T16010

08T16110

EV14036

Page 64: GB RockBreaker Manual

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62 | GB HYDRAULIC BREAKERS

GB4T/GB5T/GB6T/GB8AT(GB7T)/GB8T

PART NAMEGB4T

PART NO. Q’TYREMARKSNO.

GB5T

PART NO. Q’TY

GB6T

PART NO. Q’TY

GB8AT(GB7T)

PART NO. Q’TY

GB8T

PART NO. Q’TY

33

34

35

36

36-1

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

1

1

1

1

1

2

2

2

2

2

1

2

3

3

3

1

1

4

4

4

4

1

1

11

1

1

1

1

1

1

2

2

2

2

2

1

2

3

3

3

1

1

4

4

4

4

1

1

11

1

1

1

1

1

1

2

2

2

2

2

1

2

3

3

2

1

1

4

4

4

4

1

1

11

1

1

1

1

1

1

2

2

2

2

2

1

2

3

3

3

1

1

4

4

4

4

1

1

11

1

1

1

1

1

1

2

2

2

2

2

1

2

3

3

3

1

1

4

4

4

4

1

1

11

1

CHARGING VALVE PLUG

O-RING

FRONT HEAD ASS’Y

FRONT HEAD

LOWER BUSH

LOWER BUSH (BOX)

LOWER BUSH PIN

RUBBER PLUG (L)

SNAP RING

SOCKET PLUG

O-RING

UPPER BUSH

TOOL RETAINER

STOP PIN

SOCKET PLUG

O-RING

HOLLOW PLUG

GREASE NIPPLE

TIE ROD ASS’Y

TIE ROD

HEX NUT

WASHER

ROUND NUT

TOOL (WEDGE)

TOOL (MOIL POINT)

TOOL (BLUNT)TOOL (CONE)

TOOL (PILE HAMMER)

SEAL KIT ASS’Y

No.35~48

No.49~52

OPTION

OPTION

OPTIONOPTION

OPTION

EV14037

OP13071

04T17000

04T17010

04T17020

04T17130

04T17030

ER14007

EN14033

BS11020

OP13008

04T17060

04T17070

04T17080

BS11022

OP13007

EH14032

EG14031

04T18000

04T18010

04T18020

04T18030

04T18040

04T19010

04T19020

04T1903004T19040

04T19050

04T30000

EV14037

OP13071

05T17000

05T17010

05T17020

05T17130

05T17030

ER14004

EN14034

BS11021

OG13030

05T17060

05T17070

05T17080

BS11022

OP13007

EH14032

EG14031

05T18000

05T18010

05T18020

05T18030

05T18040

05T19010

05T19020

05T1903005T19040

05T19050

05T30000

EV14037

OP13071

06T17000

06T17010

06T17020

06T17130

06T17030

ER14004

EN14034

BS11021

OG13030

06T17060

06T17070

06T17080

BS11022

OP13007

EH14032

EG14031

06T18000

06T18010

06T18020

06T18030

06T18040

06T19010

06T19020

06T1903006T19040

06T19050

06T30000

EV14037

OP13071

08AT17000

08AT17010

08AT17020

08AT17130

08T17030

ER14005

EN14035

BS11023

OG13030

22E17060

22E17070

22E17080

BS11020

OP13008

EH14032

EG14031

08AT18000

08AT18010

08AT18020

08AT18030

08AT18040

08AT19010

08AT19020

08AT1903008AT19040

08AT19050

08AT3000

EV14037

OP13071

08T17000

08T17010

08T17020

08T17130

08T17030

ER14005

EN14035

BS11023

OG13030

08T17060

08T17070

22E17080

BS11020

OP13008

EH14032

EG14031

08T18000

08T18010

08T18020

08T18030

08T18040

08T19010

08T19020

08T1903008T19040

08T19050

08T30000

Page 65: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 63

GB4T/GB5T/GB6T/GB8AT(GB7T)/GB8T

SIDE PLATE TYPE BRACKET | GB4T, GB5T, GB6T, GB8AT(GB7T), GB8T

1

2

3

4

5

6

7

8

FRAME (LH)

FRAME (RH)

SIDE BOLT ASS’Y

SIDE BOLT

WASHER

SIDE HEX NUT

HEX BOLT

HEX NUT

SPRING WASHER

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

04T21010

04T21020

04T21100

BH11035

BH11052

BH11070

BH11036

BH11057

BH11067

OPTION

OPTION

1

1

6

6

6

10

20

10

2

2

05T21010

05T21020

05T21100

BH11037

BH11053

BH11071

BH11036

BH11057

BH11067

OPTION

OPTION

1

1

6

6

6

12

24

12

2

2

06T21010

06T21020

06T21100

06T21110

06T21120

06T21130

BH11038

BH11058

BH11068

OPTION

OPTION

1

1

8

16

16

12

24

12

2

2

8AT21010

8AT21020

22E21100

22E21110

22E21120

22E21130

BH11038

BH11058

BH11068

OPTION

OPTION

1

1

8

8

16

12

24

12

2

2

08T21010

08T21020

22E21100

22E21110

22E21120

22E21130

BH11038

BH11058

BH11068

OPTION

OPTION

No. 3~5

1

1

8

8

16

12

24

12

2

2

PART NAMEGB4T

PART NO. Q’TY

REMARKSNO.

PART LIST

GB5T

PART NO. Q’TY

GB6T

PART NO. Q’TY

GB8AT(GB7T)

PART NO. Q’TY

GB8T

PART NO. Q’TY

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64 | GB HYDRAULIC BREAKERS

GB4T/GB5T/GB6T/GB8AT(GB7T)/GB8T

BOX TYPE BRACKET | GB4T, GB5T, GB6T

Page 67: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 65

GB4T/GB5T/GB6T/GB8AT(GB7T)/GB8T

PART NAMEGB4T GB5T GB6T

PART NO.   Q’TY PART NO.   Q’TY PART NO.   Q’TYREMARKSNO.

PART LIST

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1617

18

19

20

21

22

23

24

25

26

1

1

12

4

28

16

1

2

1

1

8

8

1

1

1

12

1

1

1

2

2

6

2

1

2

2

2

1

1

12

4

28

16

1

2

1

1

8

8

1

1

1

12

2

1

1

2

2

6

2

1

2

2

2

1

1

12

4

28

16

1

2

1

1

8

8

1

1

1

12

2

2

2

2

2

6

2

1

2

2

2

FRAME

COVER PLATE

HEX BOLT

HEX BOLT

HEX NUT

SPRING WASHER

GUIDE PLATE

SOCKET BOLT

MC COVER (A)

MC COVER (B)

SOCKET BOLT

LOCKING WASHER

BOTTOM DAMPER

UPPER DAMPER

LOWER PLATE 1

LOWER PLATE 3LOWER PLATE 2

UPPER PLATE 1

UPPER PLATE

UPPER PLATE 2

CUSHION DAMPER

COVER DAMPER

RUBBER CAP

RUBBER CAP (T)

RUBBER CAP (G)

HOSE GUIDE

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

04T22010

04T22020

BH11036

BH11073

BH11057

BH11067

04T22100

BS11077

04T22410

04T22420

BS11002

BL11076

04T22210

04T22220

04T22230

04T2228004T22240

04T22250

04T22250

04T22260

04T22270

EC14022

ER14014

ER14063

ER14025

EH14028

OPTION

OPTION

05T22010

05T22020

BH11036

BH11073

BH11057

BH11067

05T22100

BS11077

05T22410

05T22420

BS11002

BL11076

05T22210

05T22220

05T22230

05T2223005T22240

05T22250

05T22250

05T22260

22E22270

EC14022

ER14014

ER14018

ER14025

EH14028

OPTION

OPTION

06T22010

06T22020

BH11040

BH11074

BH11058

BH11068

06T22100

BS11077

06T22410

06T22420

BS11002

BL11076

06T22210

06T22220

06T22230

06T2223022E22240

22E22250

22E22260

22E22260

22E22270

EC14022

ER14014

ER14019

ER14026

EH14029

OPTION

OPTION

Page 68: GB RockBreaker Manual

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66 | GB HYDRAULIC BREAKERS

GB4T/GB5T/GB6T/GB8AT(GB7T)/GB8T

BOX TYPE BRACKET | GB8AT(GB7T), GB8T

Page 69: GB RockBreaker Manual

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Page 70: GB RockBreaker Manual

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68 | GB HYDRAULIC BREAKERS

GB4T/GB5T/GB6T/GB8AT(GB7T)/GB8T

SIDE TYPE BRACKET | GB4T, GB5T, GB6T, GB8AT(GB7T), GB8T

PART NAMEGB4T

PART NO. Q’TYREMARKSNO.

PART LIST

GB5T

PART NO. Q’TY

GB6T

PART NO. Q’TY

GB8AT(GB7T)

PART NO. Q’TY

GB8T

PART NO. Q’TY

1

2

3

4

5

6

7

8

9

10

11

1

2

2

6

6

6

2

2

2

2

4

2

2

1

2

2

6

6

6

2

4

2

2

4

2

2

1

2

2

6

12

12

2

4

2

2

4

2

2

1

1

1

8

16

16

2

4

2

2

4

2

2

1

1

1

8

16

16

2

4

2

2

4

2

2

FRAME

SET PLATE

GUIDE PLATE

SIDE BOLT ASS’Y

SIDE BOLT

WASHER

SIDE HEX NUT

BRACKET PIN ASS’Y

PIN

DISTANCE BUSH

STOP RING

HEX BOLT

HEX NUT

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

NO. 4~6

NO. 7~11

(OPTION)

(OPTION)

(OPTION)

(OPTION)

(OPTION)

04T23030

04T23040

04T23050

04T23100

BH11035

BH11052

BH11070

04T23200

04T23210

04T23230

04T23220

BH11034

BH11056

OPTION

OPTION

05T23030

05T23040

05T23050

05T23100

BH11037

BH11053

BH11071

05T23200

05T23210

05T23230

05T23220

BH11034

BH11056

OPTION

OPTION

06T23030

06T23040

06T23050

06T21100

06T21110

06T21120

06T21130

06T23200

06T23210

06T23230

06T23220

BH11039

BH11054

OPTION

OPTION

8AT23030

8AT23040

8AT23050

22E21100

22E21110

22E21120

22E21130

8AT23200

8AT23210

8AT23230

8AT23220

BH11041

BH11054

OPTION

OPTION

08T23030

08T23040

08T23050

22E21100

22E21110

22E21120

22E21130

08T23200

08T23210

08T23230

08T23220

BH11041

BH11054

OPTION

OPTION

Page 71: GB RockBreaker Manual

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Page 72: GB RockBreaker Manual

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70 | GB HYDRAULIC BREAKERS

GB4T/GB5T/GB6T/GB8AT(GB7T)/GB8T

TRENCH TYPE BRACKET | GB8T

PART NAME PART NO. Q’TY REMARKSNO.

PART LIST

1

2

3

4

5

6

7

8

9

10

11

12

13

1

12

56

28

2

4

2

16

1

1

1

1

6

2

2

FRAME

HEX BOLT

HEX NUT

SPRING WASHER

DISTANCE BOLT

SIDE HEX NUT

WASHER

HEX BOLT

COVER PLATE

SUPPORT PLATE-L

SUPPORT PLATE-H

DISTANCE PLATE

BUMPER

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

08T24010

BH12015

BH12035

BH12045

08T24070

BH12030

BH12048

BH11085

08T24020

08T24030

08T24040

08T24050

22E24060

OPTION

OPTION

Page 73: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 71

GB150/GB8AF/GB8F/GB9F/GB11F/GB14F

BREAKER BODY | GB150, GB8AF, GB8F, GB9F, GB11F, GB14F

Page 74: GB RockBreaker Manual

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72 | GB HYDRAULIC BREAKERS

GB150/GB8AF/GB8F/GB9F/GB11F/GB14F

PART NAMEGB150

PART NO.   Q’TY  REMARKSNO.

PART LIST

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

3738

39

1

3

3

1

1

1

1

1

1

1

2

2

2

2

1

2

4

1

1

1

2

2

3

1

1

1

1

1

1

1

1

1

2

1

1

1

11

1

CYLINDER ASS’Y

CYLINDER

SOCKET PLUG

O-RING

DUST SEAL

U-PACKING

BUFFER SEAL

VALVE ADJUSTER

O-RING

BACK UP RING

HEX NUT

MALE ADAPTER

O-RING

UNION CAP

DOWEL PIN

AIR CHECK VALVE

O-RING

HELI SERT COIL

PISTON

SEAL RETAINER ASS’Y

SEAL RETAINER

GAS SEAL

STEP SEAL

O-RING

O-RING

BACK UP RING

ACCUMULATOR ASS’Y

ACCUMULATOR BODY

O-RING

BACK UP RING

ACCUMULATOR COVER

DIAPHRAM

ACCUMULATOR CHARGING VALVE

O-RING

ACCUMULATOR CHARGING VALVE CAP

O-RING

CHARGING PLUG

HOLDER PIN

HOLDER(A)

HOLDER(B)HOLDER(C)

CENTER PIN

No.1~17

No.19~24

No.25~41

15K11000

15K11010

BS11016

OP13009

SD12021

SU12052

SB12036

06T11030

OP13002

BP20001

BH11078

EM14042

OP13013

EU14050

22E11070

EV14039

OP13007

22E11120

15K12010

15K13000

15K13010

SG12007

SS12065

OA13057

OG13047

BG20020

15K14000

15K14010

OG13070

BG40014

15K14020

17E14030

EV14060

OP13001

EV14061

OP13005

22E14050

15K14060

15K14070

15K1408015K14090

15K14100

1

3

3

1

1

1

1

1

2

1

2

2

2

2

1

2

4

1

1

1

2

2

3

1

1

1

1

1

1

1

1

1

2

1

1

1

11

1

08AF11000

08AF11010

BS11016

OP13009

SD12023

SU12055

SB12038

08T11030

OP13003

BP20002

BH11079

EM14043

OP13019

EU14050

22E11070

EV14039

OP13007

22E11120

08AT12010

08T13000

08T13010

SG12011

SS12069

OA13060

OG13049

BG20009

08F14000

08F14010

OG13042

BG40009

08F14020

08F14030

EV14060

OP13001

EV14061

OP13005

22E14050

22E14060

22E14070

22E1408022E14090

22E14100

1

3

3

1

1

1

1

1

2

1

2

2

2

2

1

2

4

1

1

1

2

2

3

1

1

1

1

1

1

1

1

1

2

1

1

1

11

1

08F11000

08F11010

BS11016

OP13009

SD12023

SU12055

SB12038

08T11030

OP13003

BP20002

BH11079

EM14043

OP13019

EU14050

22E11070

EV14039

OP13007

22E11120

08T12010

08T13000

08T13010

SG12011

SS12069

OA13059

OG13049

BG20009

08F14000

08F14010

OG13042

BG40009

08F14020

08F14030

EV14060

OP13001

EV14061

OP13005

22E14050

22E14060

22E14070

22E1408022E14090

22E14100

1

3

3

1

1

1

1

1

2

1

2

2

2

2

1

2

4

1

1

1

2

2

3

1

1

1

1

1

1

1

1

1

2

1

1

1

11

1

09F11000

09F11010

BS11017

OP13011

SD12023

SU12055

SB12038

08T11030

OP13003

BP20002

BH11079

EM14043

OP13019

EU14050

22E11070

EV14039

OP13007

22E11120

08T12010

08T13000

08T13010

SG12011

SS12069

OA13060

OG13049

BG20009

08F14000

08F14010

OG13042

BG40009

08F14020

08F14030

EV14060

OP13001

EV14061

OP13005

22E14050

22E14060

22E14070

22E1408022E14090

22E14100

1

3

3

1

1

1

1

1

2

1

2

2

2

2

1

2

4

1

1

1

2

2

3

1

1

1

1

1

1

1

1

1

2

1

1

1

11

1

11F11000

11F11010

BS11018

OP13015

SD12025

SU12057

SB12040

11F11030

OP13005

BP20004

BH11080

EM14044

OP13021

EU14052

22E11070

EV14039

OP13007

22E11130

11F12010

11F13000

11F13010

SG12012

SS12070

OA13062

OG13050

BG20010

11F14000

11F14010

OP13022

BG40006

11F14020

11F14030

EV14060

OP13001

EV14061

OP13005

22E14050

11F14060

11F14070

11F1408011F14090

11F14100

1

3

3

1

1

1

1

1

2

1

2

2

2

2

1

2

4

1

1

1

2

2

3

1

1

1

1

1

1

1

1

1

2

1

1

1

11

1

14F11000

14F11010

BS11018

OP13015

SD12026

SU12059

SB12041

11F11030

OP13005

BP20004

BH11080

EM14044

OP13021

EU14052

22E11070

EV14039

OP13007

22E11130

14F12010

14F13000

14F13010

SG12014

SS12071

OA13064

OG13052

BG20021

11F14000

11F14010

OP13022

BG40006

11F14020

11F14030

EV14060

OP13001

EV14061

OP13005

22E14050

11F14060

11F14070

11F1408011F14090

11F14100

GB8AF

PART NO.   Q’TYGB8F

PART NO.   Q’TYGB9F GB11F GB14F

PART NO. PART NO. PART NO.Q’TY Q’TY Q’TY

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GB INDUSTRIES CO., LTD. | 73

GB150/GB8AF/GB8F/GB9F/GB11F/GB14F

PART NAMEGB150

PART NO.   Q’TY  REMARKSNO.

40

41

42

43

44

45

46

47

48

48-1

49

50

51

52

53

53-1

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

1

12

4

1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

2

2

1

2

3

3

3

1

1

4

4

4

4

1

1

1

11

HOLDER NUT

SOCKET BOLT

SOCKET BOLT

VALVE ASS’Y

VALVE

VALVE PLUG

O-RING

O-RING

VALVE SLEEVE

BACK HEAD ASS’Y

BACK HEAD

BACK HEAD (B0X)

BACK HEAD CHARGING VALVE

CHARGING VALVE PLUG

O-RING

FRONT HEAD ASS’Y

FRONT HEAD

LOWER BUSH

LOWER BUSH (BOX)

LOWER BUSH PIN

RUBBER PLUG (L)

SNAP RING

SOCKET PLUG

O-RING

UPPER BUSH

TOOL RETAINER

STOP PIN

SOCKET PLUG

O-RING

HOLLOW PLUG

GREASE NIPPLE

TIE ROD ASS’Y

TIE ROD

HEX NUT

WASHER

ROUND NUT

TOOL (WEDGE)

TOOL (MOIL POINT)

TOOL (BLUNT)

TOOL (CONE)TOOL (PILE HAMMER)

SEAL KIT ASS’Y

No.43~47

No.48~51

No.52~65

No.66~69

OPTION

OPTION

OPTION

OPTIONOPTION

BH11078

BS11003

BS11004

15K15000

15K15020

15K15030

OG13038

OG13034

15K15040

15K16000

15K16010

EV14036

EV14037

OP13071

15K17000

15K17010

15K17020

15K17130

06T17030

ER14004

EN14034

BS11021

OG13030

15K17060

06T17070

06T17080

BS11022

OP13007

EH14032

EG14031

15K18000

15K18010

06T18020

06T18030

06T18040

15K19010

15K19020

15K19030

15K1904015K19050

15K30000

1

12

4

1

1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

2

2

1

2

3

3

3

1

1

4

4

4

4

1

1

1

11

BH11078

BS11005

BS11006

08AT15000

08AT15020

08AT15030

OG13040

OG13035

08AT15040

08AT16000

08AT16010

08AT16110

EV14036

EV14037

OP13071

08AT17000

08AT17010

08AT17020

08AT17130

08T17030

ER14005

EN14035

BS11023

OG13030

22E17060

22E17070

22E17080

BS11020

OP13008

EH14032

EG14031

08AT18000

08AT18010

8AT18020

8AT18030

8AT18040

08AT19010

08AT19020

08AT19030

08AT1904008AT19050

08AT30000

1

12

4

1

1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

2

2

1

2

3

3

3

1

1

4

4

4

4

1

1

1

11

BH11078

BS11005

BS11006

08AT15000

8AT15020

8AT15030

OG13040

OG13035

8AT15040

08F16000

08F16010

08F16110

EV14036

EV14037

OP13071

08F17000

08F17010

08F17020

08F17130

08T17030

ER14005

EN14035

BS11023

OG13030

08F17060

08F17070

22E17080

BS11020

OP13008

EH14032

EG14031

08F18000

08F18010

08F18020

08F18030

08F18040

08F19010

08F19020

08F19030

08F1904008F19050

08F30000

1

12

4

1

1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

2

2

1

2

3

3

3

1

1

4

4

4

4

1

1

1

11

BH11078

BS11005

BS11006

08T15000

08T15020

08T15030

OG13041

OG13034

08T15040

08T16000

08T16010

08T16110

EV14036

EV14037

OP13071

08T17000

08T17010

08T17020

08T17130

08T17030

ER14005

EN14035

BS11023

OG13030

08T17060

08T17070

22E17080

BS11020

OP13008

EH14032

EG14031

08T18000

08T18010

08T18020

08T18030

08T18040

08T19010

08T19020

08T19030

08T1904008T19050

08T30000

1

16

4

1

1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

2

2

1

2

3

3

3

1

1

4

4

4

4

1

1

1

11

BH11078

BS11007

BS11008

11F15000

11F15020

11F15030

OG13043

OG13037

11F15040

11F16000

11F16010

11F16110

EV14036

EV14037

OP13071

11F17000

11F17010

11F17020

11F17130

11F17030

ER14004

EN14034

BS11021

OG13030

11F17060

11F17070

11F17080

BS11022

OP13008

EH14032

EG14031

11F18000

11F18010

11F18020

11F18030

11F18040

11F19010

11F19020

11F19030

11F1904011F19050

11F30000

1

16

4

1

1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

2

2

1

2

3

3

3

1

1

4

4

4

4

1

1

1

11

BH11078

BS11007

BS11008

14F15000

14F15020

14F15030

OG13042

OG13037

14F15040

14F16000

14F16010

14F16110

EV14036

EV14037

OP13071

14F17000

14F17010

14F17020

14F17130

11F17030

ER14004

EN14034

BS11021

OG13030

14F17060

11F17070

11F17080

BS11022

OP13008

EH14032

EG14031

14F18000

14F18010

11F18020

11F18030

11F18040

14F19010

14F19020

14F19030

14F1904014F19050

14F30000

GB8AF

PART NO.   Q’TYGB8F

PART NO.   Q’TYGB9F GB11F GB14F

PART NO. PART NO. PART NO.Q’TY Q’TY Q’TY

Page 76: GB RockBreaker Manual

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74 | GB HYDRAULIC BREAKERS

GB150/GB8AF/GB8F/GB9F/GB11F/GB14F

SIDE PLATE TYPE BRACKET | GB150, GB8AF, GB8F, GB9F, GB11F, GB14F

PART NAMEGB150

PART NO.   Q’TY

  REMARKSNO.

PART LIST

1

2

3

4

5

6

7

8

1

1

8

16

16

12

24

12

2

2

FRAME (LH)

FRAME (RH)

SIDE BOLT ASS’Y

SIDE BOLT

WASHER

SIDE HEX NUT

HEX BOLT

HEX NUT

SPRING WASHER

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

No. 3~5

15K21010

15K21020

06T21100

06T21110

06T21120

06T21130

BH11038

BH11058

BH11068

OPTION

OPTION

1

1

8

8

16

12

24

12

2

2

8AT21010

8AT21020

22E21100

22E21110

22E21120

22E21130

BH11038

BH11058

BH11068

OPTION

OPTION

1

1

8

16

16

12

24

12

2

2

08F21010

08F21020

08F21100

08F21110

08F21120

08F21130

BH11040

BH11060

BH11068

OPTION

OPTION

1

1

8

8

16

12

24

12

2

2

08T21010

08T21020

22E21100

22E21110

22E21120

22E21130

BH11038

BH11058

BH11068

OPTION

OPTION

1

1

8

16

16

12

24

12

2

2

11F21010

11F21020

11F21100

11F21110

11F21120

11F21130

BH11042

BH11062

BH11070

OPTION

OPTION

1

1

8

16

16

12

24

12

2

2

14F21010

14F21020

14F21100

14F21110

14F21120

14F21130

BH11042

BH11062

BH11070

OPTION

OPTION

GB8AF

PART NO.   Q’TY

GB8F

PART NO.   Q’TY

GB9F GB11F GB14F

PART NO. PART NO. PART NO.Q’TY Q’TY Q’TY

Page 77: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 75

GB150/GB8AF/GB8F/GB9F/GB11F/GB14F

BOX TYPE BRACKET | GB150

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76 | GB HYDRAULIC BREAKERS

GB150/GB8AF/GB8F/GB9F/GB11F/GB14F

PART NAME PART NO. Q’TY REMARKSNO.

PART LIST

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1617

18

19

20

21

22

23

24

1

1

12

4

28

16

1

2

1

1

8

8

1

1

2

22

4

2

2

6

2

1

2

2

2

FRAME

COVER PLATE

HEX BOLT

HEX BOLT

HEX NUT

SPRING WASHER

GUIDE PLATE

SOCKET BOLT

MC COVER (A)

MC COVER (B)

SOCKET BOLT

LOCKING WASHER

BOTTOM DAMPER

UPPER DAMPER

LOWER PLATE 1

LOWER PLATE 2UPPER PLATE 1

UPPER PLATE 2

CUSHION DAMPER

COVER DAMPER

RUBBER CAP

RUBBER CAP (T)

RUBBER CAP (G)

HOSE GUIDE

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

15K22010

15K22020

BH11040

BH11074

BH11058

BH11068

06T22100

BS11077

06T22410

15K22420

BS11002

BL11076

06T22210

06T22220

15K22230

15K2224022E22250

22E22260

22E22270

EC14022

ER14017

ER14019

ER14025

EH14029

OPTION

OPTION

Page 79: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 77

GB150/GB8AF/GB8F/GB9F/GB11F/GB14F

BOX TYPE BRACKET | GB8AF, GB8F, GB9F, GB11F, GB14F

Page 80: GB RockBreaker Manual

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78 | GB HYDRAULIC BREAKERS

GB150/GB8AF/GB8F/GB9F/GB11F/GB14F

PART NAMEGB8AF

PART NO. Q’TYREMARKSNO.

PART LIST

GB8F

PART NO. Q’TY

GB9F

PART NO. Q’TY

GB11F

PART NO. Q’TY

GB14F

PART NO. Q’TY

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1617

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

1

1

12

24

12

1

4

4

1

2

2

1

2

2

1

21

1

1

8

8

1

1

2

2

2

4

2

2

6

1

2

1

2

2

1

1

12

24

12

1

4

4

1

2

2

1

2

2

1

21

1

1

8

8

1

1

2

2

2

4

2

2

6

1

2

1

2

2

1

1

12

24

12

1

4

4

1

2

2

1

2

2

1

21

1

1

8

8

1

1

2

2

2

4

2

2

6

1

2

1

2

2

1

1

12

24

12

1

4

4

1

2

2

1

2

2

1

21

1

1

10

10

1

1

2

2

2

4

2

2

6

1

2

1

2

2

1

1

12

24

12

1

4

4

1

2

2

1

2

2

1

21

1

1

10

10

1

1

2

2

2

4

2

2

6

1

2

1

2

2

FRAME

COVER PLATE

HEX BOLT

HEX NUT

SPRING WASHER

COVER (A)

HEX BOLT

SPRING WASHER

A-G BASE

HEX BOLT

SPRING WASHER

BODY SUPPORT

SOCKET BOLT

BUSH

SIDE BOLT

SIDE HEX NUTBODY CAP

MC COVER (A)

MC COVER (B)

SOCKET BOLT

LOCKING WASHER

BOTTOM DAMPER

UPPER DAMPER

LOWER PLATE 1

LOWER PLATE 2

UPPER PLATE 1

UPPER PLATE 2

CUSHION DAMPER

COVER DAMPER

RUBBER CAP

RUBBER CAP (G)

HOSE GUIDE

RUBBER CAP (G3)

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

8AF22010

8F22020

BH11040

BH11058

BH11068

8AT22060

BH11083

BH11065

08T22090

BH11084

BH11067

8AT22030

BS11077

8AT22050

22E21110

22E211308AT22040

8AT22410

8AF22420

BS11002

BL11076

8AT22210

22E22220

22E22230

08T22240

22E22250

22E22260

22E22270

EC14023

ER14017

ER14026

EH14029

ER14027

OPTION

OPTION

08F22010

08F22020

BH11040

BH11058

BH11068

08F22060

BH11083

BH11065

08T22090

BH11084

BH11067

8AT22030

BS11077

8AT22050

22E21110

22E2113008F22040

8AT22410

08F22420

BS11002

BL11076

08F22210

22E22220

22E22230

08T22240

22E22250

22E22260

22E22270

EC14023

ER14017

ER14026

EH14029

ER14027

OPTION

OPTION

09F22010

08F22020

BH11040

BH11058

BH11068

09F22060

BH11083

BH11065

08T22090

BH11084

BH11067

8AT22030

BS11077

8AT22050

22E21110

22E2113008T22040

8AT22410

09F22420

BS11002

BL11076

08T22210

22E22220

22E22230

08T22240

22E22250

22E22260

22E22270

EC14023

ER14017

ER14026

EH14029

ER14027

OPTION

OPTION

11F22010

11F22020

BH11042

BH11062

BH11070

11F22060

BH11084

BH11067

53E22090

BH11084

BH11067

11F22030

BS11077

11F22050

11F21110

11F2113011F22040

11F22410

11F22420

BS11002

BL11076

11F22210

11F22220

11F22230

11F22240

11F22250

11F22260

60E22270

EC14024

ER14017

ER14026

EH14030

ER14027

OPTION

OPTION

14F22010

11F22020

BH11042

BH11062

BH11070

14F22060

BH11084

BH11067

53E22090

BH11084

BH11067

11F22030

BS11077

14F22050

14F21110

14F2113014F22040

11F22410

14F22420

BS11002

BL11076

14F22210

11F22220

11F22230

11F22240

11F22250

11F22260

60E22270

EC14064

ER14017

ER14026

EH14030

ER14027

OPTION

OPTION

Page 81: GB RockBreaker Manual

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GB INDUSTRIES CO., LTD. | 79

GB150/GB8AF/GB8F/GB9F/GB11F/GB14F

SIDE TYPE BRACKET | GB150, GB8AF, GB8F, GB9F, GB11F, GB14F

PART NAMEGB150

PART NO.   Q’TY  REMARKSNO.

PART LIST

1

2

3

4

5

6

7

8

9

10

11

1

2

2

6

12

12

2

4

2

2

4

2

2

FRAME

SET PLATE

GUIDE PLATE

SIDE BOLT ASS’Y

SIDE BOLT

WASHER

SIDE HEX NUT

BRACKET PIN ASS’Y

PIN

DISTANCE BUSH

STOP RING

HEX BOLT

HEX NUT

OIL HIGH PRESSURE HOSE

OIL HOSE PLUG

No.4~6

No.7~11

(OPTION)

(OPTION)

(OPTION)

(OPTION)

(OPTION)

15K23030

15K23040

15K23050

06T21100

06T21110

06T21120

06T21130

06T23200

06T23210

06T23230

06T23220

BH11039

BH11054

OPTION

OPTION

1

1

1

8

16

16

2

4

2

2

4

2

2

8AT23030

8AT23040

8AT23050

22E21100

22E21110

22E21120

22E21130

8AT23200

8AT23210

8AT23230

8AT23220

BH11041

BH11054

OPTION

OPTION

1

1

1

8

16

16

2

4

2

2

4

2

2

08F23030

08F23040

08F23050

22E21100

22E21110

22E21120

22E21130

08F23200

08F23210

08F23230

08F23220

BH11041

BH11054

OPTION

OPTION

1

1

1

8

16

16

2

4

2

2

4

2

2

08T23030

08T23040

08T23050

22E21100

22E21110

22E21120

22E21130

08T23200

08T23210

08T23230

08T23220

BH11041

BH11054

OPTION

OPTION

1

1

1

8

16

16

2

4

2

2

4

2

2

11F23030

11F23040

11F23050

11F21100

11F21110

11F21120

11F21130

11F23200

11F23210

11F23230

11F23220

BH11045

BH11059

OPTION

OPTION

1

1

1

8

16

16

2

4

2

2

4

2

2

14F23030

14F23040

14F23050

14F21100

14F21110

11F21120

11F21130

14F23200

11F23210

14F23230

11F23220

BH11045

BH11059

OPTION

OPTION

GB8AF

PART NO.   Q’TYGB8F

PART NO.   Q’TYGB9F GB11F GB14F

PART NO. PART NO. PART NO.Q’TY Q’TY Q’TY

Page 82: GB RockBreaker Manual

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Model

Serial number

Year of construction

Page 83: GB RockBreaker Manual

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