i3157s

8/6/2019 i3157s

http://slidepdf.com/reader/full/i3157s 1/11I-3157-SReprinted 6/1/96

Quiet Intra-Vane Single Pumps25V(T)-35V(T)-45V(T) Series20 Design 282/283 Series

Service DataVickers

®

Vane Pumps

8/6/2019 i3157s

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Table of Contents

Section Page

I. Introduction

A. Purpose of Manual 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B. General Information 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

II. Description

A. General 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

III. Principles of Operation

A. General 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV. Installation and Operating Instructions

A. Installation Drawings 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B. Mounting and Drive Connections 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C. Shaft Rotation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D. Piping and Tubing 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E. Hydraulic Fluid Recommendations 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F. Sound Levels 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

G. Overload Protection 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H. Start-Up 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

V. Service & Maintenance

A. Circuit Inspection 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B. Adding Fluid to the System 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C. Adjustments 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D. Lubrication 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E. Replacement Parts 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F. Product Life 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G. Troubleshooting 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VI. Overhaul

A. Service Tools 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B. Unit Removal 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C. Disassembly 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D. Cleaning 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E. Inspection, Repair and Replacement 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F. Assembly 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VII. Service and Maintenance

A. Start-Up 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B. Test 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Section I – Introduction

A. Purpose of Manual 1.

This manual describes the basic operating characteristics

and provides service and overhaul information for Vickers

282/283 suffix single vane pumps. Information contained

herein pertains to the latest design series.

B. General Information 2.Related Publications – Service parts information and

installation dimensions are not contained in this manual. The

installation drawings and parts catalogs listed in Table 1 are

available from Vickers.

Model Codes – Variations within each basic model series are

covered in the model code. Table 2 is a breakdown of the model

codes covering these units. The model code will be stamped

into the cover nameplate. If an older design unit is being

updated to the new 282/283 design, stamp the new design

number on the nameplate. Inquiries should always include the

complete unit model code number as stamped on the

nameplate.

Model Parts Catalog Installation

25V I-3158-S

25VT I-3154-S

35V I-3177-S

35VT I-3149-S

45V I-3159-S

45VT I-3151-S

Table 1. Related Publications

Model Code

2

2 4 5 6 7 8 9 10 111

Viton seals1

3 12

3

Pump series

Quiet intra-vane type pump

4

Omit if not required

Thru shaft connection mtg.(SAE 2 bolt adapter flange)

5 SAE rated delivery USgpm

1200 RPM at 100 PSI

A – “A” flangeB – “B” flangeC – “C” flange

6 Port connections

SAE 4 – Bolt

10 Design

7 Coupling

2 – For SAE “A” flange 30_ involutespline w/1.25 extension

2 – For SAE “B” flange 30_ involutespline w/1.75 extension

2 – For SAE “C” flange 30_ involutespline w/2.31 extension

8 Shaft type

1 – Straight key11 – Splined86 – Straight key (heavy duty)

9 Port positions (Inlet coverpositions viewed from cover end)

11 Rotation (Viewed from shaft end)

L – Left handOmitted – Right hand

12 Industrial suffix

282 – SAE 2 bolt mounting283 – Foot mounted

Table 2. Model Code Breakdown

25, 35, 45

25V 35V 45V

12 USgpm 25 USgpm 42 USgpm14 USgpm 30 USgpm 50 USgpm17 USgpm 35 USgpm 60 USgpm21 USgpm 38 USgpm

A – Opposite outlet portB – 90_ CW from outlet portC – Inline with outline portD – 90_ CCW from outlet port

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Section II – Description

A. General 3.

The single intra-vane pump with a 282/283 suffix is designed

to operate at reduced noise levels, but still maintain the

same reliability, operating characteristics, and service

advantages of previous models.

All sound reduction in the 282/283 series pump is

accomplished within the cartridge kit. The ring, vanes, rotorand support plates have been redesigned. The pump

housing remains unchanged. Thus, existing systems may be

upgraded by simply replacing the cartridge kit. Figure 1

shows the basic 282/283 cartridge kit. Note that 12 vanes

are assembled into the machined rotor slots. Previous

designed models use 10 vanes.

Figure 1. -282/-283 Basic Cartridge Kit Parts

Section III – Principles of Operation 4.

A. GeneralThe operating principle of a vane pump is illustrated in

Figure 2. A slotted rotor is splined to the drive shaft and

turns inside a cam ring. Vanes are fitted to the rotor slots and

follow the inner surface of the cam ring as the rotor turns.

Centrifugal force and pressure under the vanes hold them

out against the cam ring. Pumping chambers are formed

between the vanes and the cam ring and are enclosed by

the two support plates.

The 282/283 series pumps are of a balanced intra-vane

design (see Figure 2.). Outlet pressure is constantly applied

to the small intra-vane area of the vane. As the pump vanerotates through the high and low quadrants, outlet pressure

is alternately applied to the rest of the under vane area. This

varying pressure under the vane reduces wear and

increases pump efficiency.

Pump delivery can be changed by changing the ring or

installing a new cartridge kit. Table 2 shows available

delivery options. Cartridge kit part numbers are tabulated in

the parts and service drawings (see Table 1.).

Figure 2. Vane Pump Operation

Outlet

LowPressureQuadrant

HighPressureQuadrant

SystemPressure

Rotation

Inlet

Rotation

Inlet orOutletPressure

ContinuousOutletPressure

Outlet support platefeeds full loadpressure tointra-vane area atall times.

Holes in rotor segmentsfeed load pressure underfull vane area in pressurequadrant and inlet pressureunder vane area in inletquadrants.

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Section IV – Installation and Operating Instructions

A. Installation Drawings 5.

The installation drawings listed in Table 1 show operating

characteristics, installation dimensions and port locations.

B. Mounting and Drive Connections

6.

CAUTION

Pump shafts are designed to be installed in couplings

with a slip fit. Pounding can injure the bearings. Shaft

tolerances are shown on the installation drawings.

(See Table 1.)

1. Direct Mounting – A pilot on the pump mounting

flange (Figure 3) assures correct mounting and shaft

alignment. Make sure the pilot is firmly seated in the

accessory pad of the power source. Care should beexercised in tightening the mounting screws to prevent

misalignment.

Pilot

Flange

Figure 3. Mounting Flange and Pilot

2. Indirect Drive is not recommended for these pumps

without Vickers engineering approval.

C. Shaft Rotation 7.

Pumps are assembled for either right hand (clockwise) or left

hand (counterclockwise) shaft rotation as viewed from the

shaft end.

CAUTION

Never drive a pump in the wrong direction of

rotation. Seizure will result, necessitating expensive

repairs.

D. Piping and Tubing 8.

1. All pipes and tubing must be thoroughly cleaned

before installation. Recommended methods of cleaning are

sand blasting, wire brushing, pickling and power flushing

with clean solvent to remove loose particles.

NOTE

For information on pickling, refer to 694.

2. To minimize flow resistance and the possibility of

leakage, only as many fittings and connections as are

necessary for proper installation should be used.

3. The number of bends in tubing should be kept to a

minimum to prevent excessive turbulence and friction of oil

flow. Tubing must not be bent too sharply. The

recommended minimum radius for bends is three times the

inside diameter of the tube.

E. Hydraulic Fluid Recommendations

9.

General Data

Fluid in a hydraulic system performs the dual function of

lubrication and transmission of power. It constitutes a vital

factor in a hydraulic system, and careful selection of it shouldbe made with the assistance of a reputable supplier. Proper

selection of fluid assures satisfactory life and operation of

system components with particular emphasis on hydraulic

pumps. Any fluid selected for use with pumps is acceptable

for use with valves or motors.

Fluid recommendations noted in 694 are based on our

experience in industry as a hydraulic component

manufacturer. Where special considerations indicate a need

to depart from the recommended fluids or operating

conditions, see your Vickers sales engineer.

Cleanliness

Thorough precautions should always be observed to insurethe hydraulic system is clean.

1. Clean (flush) entire new system to remove paint,

metal chips, welding shot, etc.

2. Filter each change of fluid to prevent introduction of

contaminants into the system.

3. Provide continuous filtration of fluid to remove sludge

products of wear and corrosion generated during the life of

the system.

4. Provide continuous protection of system from entry

of filters, breathers, reservoirs, etc., cannot be overemphasized.

5. During usage, proper fluid filling and servicing of

filters, breathers, reservoirs, etc., cannot be over

emphasized.

6. Thorough precautions should be taken by proper

system and reservoir design, to insure that aeration of the

fluid will be kept to a minimum.

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F. Sound Levels 10.

Although system noise levels can be reduced by modifying

pump design, fluid conditions also play a major part in

reducing system noise levels.

Some of the major factors affecting the fluid conditions that

cause the loudest noises in a hydraulic system are:

1. Very high viscosities at start-up temperatures can

cause pump noise due to cavitation.

2. Running with a moderately high viscosity fluid will

impede the release of entrained air. The fluid will not be

completely purged of such air in the time it remains in the

reservoir before recycling through the system.

3. Aerated fluid can be caused by ingestion of air

through the pipe joints of inlet lines, high velocity discharge

lines, cylinder rod packings or by fluid discharging above the

fluid level in the reservoir. Air in the fluid causes a noise

similar to cavitation.

G. Overload Protection 11.

Relief valves limit pressure in the system to a prescribed

maximum and protect components from excessive pressure.

The setting of the relief valve depends on the work

requirements of the system.

H. Start-Up 12.

With a minimum drive speed of 600 RPM, a pump should

prime almost immediately if provision is made to initially

purge the air from the system.

Failure to prime within a reasonable time may result in

damage due to lack of lubrication. The pump inlet line must

be filled with fluid and must be tight and free from air leaks. It

may be necessary to crack a fitting on the outlet side of the

pump to purge air trapped in the system.

Section V – Service and Maintenance

A. Circuit Inspection 13.Periodic inspection of the fluid condition and tube or pipe line

connections can save time-consuming breakdowns and

unnecessary parts replacement. The following should be

checked regularly:

1. All hydraulic connections must be kept tight. A loose

connection in a pressure line will permit the fluid to leak out.

If the fluid level becomes so low as to uncover the inlet pipeopening in the reservoir, extensive damage to the pump can

result. In suction or return lines, loose connections permit air

to be drawn into the system resulting in noisy and/or erratic

operation.

2. Clean fluid is the best insurance for long service life.

Therefore, the reservoir should be checked periodically for

dirt or other contaminants. If the fluid becomes

contaminated, the system should be drained and the

reservoir cleaned before new fluid is added.

3. Filter elements also should be checked and replaced

periodically. A clogged filter element results in a higher

pressure drop. This can force particles through the filterwhich would ordinarily be trapped, or can cause the by-pass

to open, resulting in a partial or complete loss of filtration.

4. Air bubbles in the reservoir can ruin the pump and

other components. If bubbles are seen, locate the source of

the air and seal the leak.

5. A pump which is running excessively hot or noisy is a

potential failure. Should a pump become noisy or

overheated, the machine should be shut down immediately

and the cause of improper operation corrected.

B. Adding Fluid to the System 14.When hydraulic fluid is added to replenish the system, it

should always be poured through a clean wire screen (200

mesh or finer) or preferably pumped through a 10 micron

(absolute) filter.

It is important that the fluid be clean and free of any

substance which could cause improper operation or wear of

the pump or other hydraulic units. Therefore, the use of cloth

to strain the fluid should be avoided to prevent lint gettinginto the system.

C. Adjustments 15.No periodic adjustments are required, other than to maintain

proper shaft alignment with the driving medium.

D. Lubrication 16.Internal lubrication is provided by the fluid in the system.Lubrication of the shaft coupling should be as specified bytheir manufacturers. Coat shaft splines with a dry lubricant(Molycoat or equivalent) to prevent wear.

E. Replacement Parts 17.Reliable operation throughout the specified operatingrange is assured only if genuine Vickers parts are used.Sophisticated design processes and material are usedin the manufacture of our parts.

Substitutes may result in early failure. Part numbers areshown in the parts drawings listed in Table 1.

Repair Kits – Commonly replace parts usually providedin the form of a kit. (See Figure 4.) It is recommendedthat all such parts be replaced with the kit when a unit isoverhauled.

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CAUTION

Individual cartridge parts are not interchangeable

with similar parts of previous design models.

Complete cartridge kits are interchangeable with

previous designs.

Rotor, vane andintra-vaneassembledinside ring

InletSupportPlate

Screw

BushingLocation Pin

Ring

OutletSupportPlate

Sealing Ring

Back-upRingand O-ring

Figure 4. Preassembled Cartridge Kit

F. Product Life 18.The longevity of these products is dependent upon

environment, duty cycle, operating parameters and

system cleanliness. Since these parameters vary from

application to application, the ultimate user must

determine and establish the periodic maintenance

required to maximize life and detect potential

component failure.

G. Troubleshooting 19.

Table 3 lists the common difficulties experienced with vane

pumps and hydraulic systems. It indicates probable causes

and remedies for each of the troubles listed.

TROUBLE PROBABLE CAUSE REMEDY

Excessive noise in pump. Low oil level in reservoir. Fill reservoir to proper level withrecommended fluid.

Air in system. Open reservoir cap and operate systemuntil purged.

Bleed hydraulic lines at highest pointdown stream of pump while system isunder pressure.

Vacuum condition. Check inlet (suction) line and fittings forair leaks.

Oil too thick. Be certain correct type of oil is used in

system. Warm up pump in cold weatheruntil noise disappears.

Damaged or missing pump seals atmating surfaces.

Locate and replace damaged or missingseals.

Cartridge kit not assembled properly. Reassemble cartridge kit.

Pump inlet/outlet lines reversed. Replumb lines to proper portconnections.

Pump overheating. Internal leakage. If excessive internal leakage exists,return to shop for complete overhaul.

Heat exchanger not functioning. Locate trouble and repair or replace.

System not developing pressure. Relief valve open. Repair or replace.

Loss of fluid internally (slippage). Return to shop for evaluation and repair.

Cartridge kit not assembled properly. Reassemble kit.

Cartridge kit assembled for oppositerotation.

Reassemble kit to proper rotation.

Pump inlet/outlet lines reversed. Replumb lines to proper portconnnections.

Disconnected or broken drivemechanism.

Locate and repair.

Loss of fluid. Ruptured hydraulic lines. Locate and repair.

Leaking or missing seals. Locate and repair.

Table 3. Troubleshooting Chart

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Section VI – Overhaul

A. Service Tools 20.

Standard Tools

1. One torque wrench with short extension and sockets.

Select appropriate torque wrench according to cover

screw specifications noted in Table 4.

2. One medium size screw driver.

3. One torque screw driver (125 lb. in. maximum).4. One internal retaining ring pliers.

5. Hydraulic oil lubricant or equivalent (SAE 10W motor

oil).

NOTE

In addition to the above tools, an arbor press may

be required to service the shaft bearing. A small

ball peen hammer and a center punch may also be

helpful during removal of the shaft key.

Special Tools

A shaft seal driver (Figure 5) is the only special tool required

for overhaul.

Model

25V

35V

45V

A

2.045.001

2.832.001

3.145.001

B

1.683.001

1.997.001

2.371.001

C

1.468.001

1.758.001

2.281.001

D

1.343.001

1.687.001

1.906.001

E

0.250

0.250

.437

Dimensions

A

BC

D

Note: All Dimensions are in inches

1/16 15_0.125

0.500

E

4.00

Break sharp

edges and polish

Figure 5. Shaft Seal Driver

B. Unit Removal

WARNING

Turn off all electrical power and relieve hydraulic

pressure. Lower all vertical cylinders. Block any

load whose movement could generate pressure.

1. Close off hydraulic oil source to pump inlet if an

overhead reservoir is used.

2. Remove the unit from the system.

3. Cap all system and unit openings to prevent entry of

dirt or moisture.

C. DisassemblyThe index numbers on Figure 8 are in order of the

disassembly sequence.

1. Thoroughly clean pump exterior.

2. Use a prick punch and mark the position of cover (4)

with respect to the body (29). Mark position of the flange with

respect to cover on VT models.

3. Remove the two screws (1) and remove the

mounting flange from the pump.

4. Remove the key (2) from the shaft (26).

NOTE

The following step (5) pertains to 25VT, 35VT or

45VT thru-shaft models only. Refer to Figure 8.

5. Disassemble (VT) thru-shaft parts as follows:

a. Remove four screws (5) from adapter flange (6).

Remove the adapter flange from inlet cover (4).

b. Remove and discard “O” rings (7) from both sides

of adapter flange.

c. Remove spline coupling (8) from end of shaft

(20). Do not remove retaining ring (9) from coupling.

d. Remove four screws (10) from inlet cover (4).

Remove the inlet cover from body (29).

6.Remove the four screws (3) from cover (4) andremove cover (*5V models only).

7.Remove cartridge kit (11) from shaft (26).

8.Remove seals (12 through 15) from cartridge kit (11).

Proceed to disassemble cartridge kit (11) according to

number sequence.

9.Pry under one coil and remove the spirolox ring (23)

out of the body (29). See Figure 6.

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Spirolox Ring (31)

Hooked Tool

Figure 6. Removing Spirolox Ring

10. Pull the shaft group (24 through 26) from the body

(29). If the bearing (25) or shaft (26) needs replacement,

remove retaining ring (24) and press the bearing off the shaft

with an arbor press. Apply pressure to the inner race of the

bearing during removal.

11. Remove washer (27) from body.

12. Drive the shaft seal (28) out of body (29).

D. Cleaning 21.All parts must be thoroughly cleaned and kept clean during

inspection and assembly. Contamination in the unit will

cause excessive wear, leakage and decreased service life.

Use a commercial solvent which is compatible with the

system fluid. Thoroughly clean all parts. Drying parts with

compressed air after cleaning is not recommended unless

the air is completely filtered to remove water and

contamination.

E. Inspection, Repair & ReplacementCheck that all internal passages are clean and unobstructed.

Examine all mating surfaces for nicks and burrs. Check

locating pins and holes for wear and burrs. Check the

condition of threaded parts and threaded holes. Check all

retaining ring recesses. Minor burrs can be removed with an

India stone. Replace any part that shows wear or damage.

The following parts are subject to special attention.

1. Cartridge Kit (11). In order to obtain maximum

overhaul life of the pump, a complete cartridge kit should be

installed if wear or scoring is noticed during the following

steps.

a. Inspect the mating surfaces of the rotor (20),outlet support plate (22) and inlet support plate (17).

b. Inspect the vanes and intra-vanes (21) for burrs,

wear and play in the rotor (20) slots. The intra-vanes should

not bind in the vanes. Remove minor burrs with an India

stone.

c. Inspect bushing for wear and scoring. Wear on

one side indicates that the pump and drive motor were not

aligned. See Figure 4.

2. Check bearing (25) for wear, looseness and pitted or

cracked races.

3. Inspect the seal and bushing mating surfaces on

shaft (26) for scoring and wear. Replace the shaft if marks

cannot be removed by light polishing.

F. AssemblyRefer to parts and service drawing listed in Table 1 for

replacement parts. Always replace old seals with new seals

when overhauling a unit. If a cartridge kit needs replacing,

new seals are included in the cartridge kit.

Apply a light film of hydraulic fluid to all component parts to

facilitate assembly and provide initial lubrication. Install parts

in reverse order of disassembly. See Figure 8.

1. Install shaft seal (28) into body (29) so that the

spring in the seal faces the inside of the pump. Press theshaft seal into the body. Use shaft seal tool shown in Figure

5 and an arbor press.

2. Install washer (27) into body.

3. If required, press bearing (25) on to shaft (26) and

secure with retaining ring (24).

4. Recheck shaft key way for nicks and burrs that could

cut the shaft seal. Remove burrs. Thoroughly lubricate the

key way end of shaft and shaft seal lip with hydraulic oil.

Carefully install shaft group (items 24 through 26) through

the seal and into body (29). Spread the spirolox ring (23) and

feed it into the groove located behind the bearing. This will

secure the shaft group within body (29).

5. Assembly sealing ring (14) into body (29).

6. If a new cartridge kit is required, install new cartridge

kit (11) on the shaft and into the body (29). If cartridge kit

assembly is required, assemble in the reverse order of

disassembly. During assembly, note the following

precautions;

a. Make sure the rotation arrows on ring (19) and

rotor (20) point in the direction of rotation.

b. Be certain the sharp edges of vanes (21) lead in

direction of pump rotation. See Figure 7.

c. Make sure “O” ring (12) and back-up ring (13) are

positioned correctly as shown on Figure 8.

7. Apply a small amount of hydraulic fluid on threads of

two screws (16). Thread the screws into cartridge kit. Install

cartridge kit (11) on the shaft and into body (29).

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InletDirection of

rotationRotor

Sharp edgeslead directionof rotation

VaneRing

Figure 7. Positioning Vanes in Rotor

8. Install “O” ring (15) over the cartridge kit (11) and into

the body “O” ring groove.

9. Line up the two cartridge pins (18) with the holes in

cover (4). Assemble cover (4) over cartridge kit and up

against body face. Position cover (4) according to markings

made during step C-2 of the disassembly procedure. Secure

the cover with four screws (3). Torque screws (3) to

specifications noted in Table 4.

Screw (3) Torque Specifications (Figure 8)

Model N.m lb. ft.

25V 88 – 101.6 65 – 7535V 190 – 217 140 – 160

45V 345 – 372.8 255 – 275

Screw (10) (Figure 8)

25VT 88 – 101.6 65 – 75

35VT 190 – 216.9 140 – 160

45VT 345 – 359 255 – 275

Table 4. Torque Specifications for Screw (3)/(10)

a. Line up the two cartridge kit pins (18) with the

holes in inlet cover

b. Install spline coupling (8) on end of shaft (26).

NOTE

If a new shaft and coupling kit is required,

install retaining ring (9) into coupling (8) prior

to coupling installation.

c. Install “O” rings (7) on both sides of adapter

flange (6).

d. Connect adapter flange (6) to inlet cover (4) with

four screws (5). (NOTE: Lockwashers are used with screw

(5) for ‘C’ adapter flanges only.) Torque screws (5) to

specifications noted in Table 5.

Screw (5) Torque Specifications

Model Adapter Flange N.m lb. ft.

25VT

35VT “A” or “B” 54 – 68 40 – 50

45VT

35VT“ ”

45VT“C” 31 – 40 23 – 30

Table 5. Screw (5) Torque Specifications

11. Install key (2) on shaft (26).

12. Place pump into mounting bracket (1) and secure it

with the two mounting bracket screws.

Section VII – Start-Up and Test

A. Start-Up 22.Install the unit into the system. Make sure the drive shaft is

aligned properly. Be sure all connections are tight and the

hydraulic fluid source is open to pump inlet before start-up.

The pump should prime almost immediately with a minimum

drive speed of 600 RPM. Intermittently operate (jog) the

pump until it primes. It may be necessary to loosen the outlet

fitting temporarily to purge trapped air. Failure of the pump to

prime in a short period of time indicates incorrect assembly

or restricted flow from the reservoir.

B. TestUse your hydraulic system to test the unit. Refer to the

installation drawings listed in Table 1 for recommended

speeds and pressures. If more precise testing is desired,

consult your Vickers sales engineering office.

8/6/2019 i3157s


Figure 8. Exploded Parts Breakdown

20

4

3

75

6

1716

18

21 1922

1514 13 12

23 24

25

11

26

2 27 2829

1

5

7

6

57 6

78

910

A

B

C

**VT (Thru Shaft Models)

Item Nomenclature Qty.

1

2

3

4

56

7

8

9

10

11

12

13

14

15

Foot Bracket Kit

Key

Screw

Cover

ScrewAdapter Flange

“O” Ring

Spline Coupling

Retaining Ring

Screw

Cartridge Kit (items 12-22)

Back-up Ring

“O” Ring

Sealing Ring

“O” Ring

1

1

4

1

41

A/R

1

1

4

1

1

1

1

1

Item Nomenclature Qty.

16

17

18

19

2021

22

23

24

25

26

27

28

29

Screw

Inlet Support Plate

Pin

Ring

RotorVanes & Intra-Vanes

Outlet Support Plate

Spirolox Ring

Retaining Ring

Bearing

Shaft

Washer

Shaft Seal

Body

2

1

2

1

112

1

1

1

1

1

1

1

1

i3157s

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