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DAILY CHECKS
SUMP OIL LEVEL
OIL FILTER DELTA P
AIR FILTER DELTA P
CONDENSATE DRAIN OPERATION CHECK OPERATION & RECORD ALL
TEMPS / PRESSURES
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INITIAL 150 HOURS
CHANGE OIL AND FILTER
CHECK / CLEAN CONDENSATE DRAINS
CHECK OPERATION & RECORD ALL TEMPS /
PRESSURES
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4000 HOURS
CLEAN CRANKCASE BREATHER ASSEMBLY
CHECK / CLEAN CONDENSATE STRAINERS
CHECK / REPLACE AIR FILTER
CHE
CK/
CLEAN
COOLERS CALIBRATE ALL TRANSDUCERS / RTDS
CHECK BLOWDOWN VALVE FUNCTION
CHECK ELECTRICAL CONNECTIONS
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8000 HOURS
AS 4000 HOURS PLUS -
CHANGE OIL AND FILTER
INSPE
CT /
CLEAN OIL PUMP STRAINER CHECKCONTACTORS
CHECK ALL ELECTRICAL CONNECTIONS
CHECK GRUB SCREWS ON COUPLINGS
CHECK / ADJUST INLET VACUUM
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GENERAL CHECKS
REFER TO MOTOR DATA SECTION FOR
LUBRICATION INSTRUCTIONS
CHECK AND RECORD MOTOR CURRENT ANDLINE VOLTAGE DURING EACH SERVICE VISIT
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INITIAL
150 HOURS
Check Sump Oil Level
Check Oil & Air Filter Pressure Differential
Condensate Valve Operation
Check & Record Pressures + Temps
Check & Record Voltages + Currents
Change Bearing Oil Filter
Change Bearing Oil
Clean Module Breather Assembly
Check / Clean Condensate Strainers
Replace Air Inlet Filter Elements
Check All Starter Electrical Connections
Check Contactors
Overhaul Blowdown Valve Assembly
Overhaul Hydraulic Load Cylinder
Overhaul Condensate Drain Valves
Overhaul Load Solenoid ValveOverhaul Discharge Check Valve
Check / Clean coolers
Lubricate Main Motor Bearings (Check Nameplate)
Check / Replace Drive Coupling Inserts
Check Main Oil Seal
Take IR30 Shock+Vibration Readings & Oil Sample
ACTION 6000 8000 10000
CARRIED OUT AT THESE INTERVALS (RUNNING HOURS)
WEEKLY 2000 4000 12000 14000 16000
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Motor Servicing
Grease motor every 3 months for 3600 RPMAnd 6 months for 1800 RPM.
For severe duty reduce interval by one half
Only grease motor when power has beenremoved from the unit
Remove outlet plugs
Grease gun fitting and spring loaded outlets or
plug are arranged at each end on the motor
housing.
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Add volume of grease to each bearing perfollowing: (camera film container = 2cu.in.)
FRAME 1800 3600
182 - 215 0.5 0.5 CU.IN.
254 - 286 1.0 1.0 CU.IN. 324 - 365 1.5 1.5 CU.IN.
404 - 449 2.5 1.0 CU.IN.
Run motor for about 30 minutes prior to
replacing outlet plug
Use specified grease motor greases
Be consistent with grease used! Do not mix
synthetic with mineral !!!! turns grease to
jelly
Motor Servicing
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Cooling Fan And Motor
Neither the fan nor the fan motor have
serviceable parts. If a problem occurs
with either of these components the part
must be replaced or rebuilt in the case ofthe motor.
Fan motor should be greased at the
same interval as the main motor.
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MOTOR SHAFTCOMPRESSOR
SHAFT
B
AC
50-100 HP
A N/A
B N/AC = .14 + - .060
Compressor coupling aligns against
a spacer on the shaft
SPACER 50-100
ONLY
125 - 200 HP
C = .16 + - .080
Motor Shaft Diameter A B
2.375 .75 .37
2.125 1.0 .62
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Sierra
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Air Filter
Replace every 4000 hours/6 months operation or as
site conditions require
Never change filter while unit is running
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Oil & Oil Filter
Always change the oil filter whenever theoil is to be replaced.
Originally IR used SL-200 now Ultra
Coolant Change initial oil at 150 hours
Thereafter every 8000 hours or 12
months operation, which ever comesfirst
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Gearcase Breather
Clean gearcase breather every 4000 hours or 6months operation, whichever occurs first
Normal gearcase static pressure
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Oil Pump
There are no serviceable parts with the oilpump, therefore if problems are
encountered with pump operation either
the pump and/or the pump coupling must
be replaced
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Airends
There are no serviceable parts within theairend so when a problem develops which
is determined to be internal to the airend,
the airend will have to be replaced
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Airend
Special tool for gear removal
Gear Lock Nut Torque's:
r 50-100
1st Stage - 75 lb/ft 2nd Stage - 35 lb/ft
r 125-200
1st Stage - 162 lb/ft
2nd Stage - 75 lb/ft
LOCTITE 222 on threads
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Sierra Driven Gear Removal #1
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Sierra Driven Gear Removal #2
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Sierra Driven Gear Removal #3
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Coolers
Coolers may be cleaned in unit using a noncaustic cleaning solution that is non
corrosive to aluminum
Cover air filter, main motor, 1SV and fanmotor to keep cleaning solution and rinse
from contaminating components
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Shaft Seal Leaks?
Axial movement 0.008-0.050
Radial movement 0.00075 (radial play)
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50-100 Sierra Jackshaft Sealing With Oil Drain
Scavenge to
Gearcase Below oil
level.
Coupling End
LoctiteH
Loctite 511
Loctite ???
Loctite 242
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125-200 Sierra Jackshaft Sealing With Oil Drain
Scavenge to Gearcase Below oil level.
Coupling End
Loctite H
Loctite 511
Loctite ???
Loctite 242
14mm
Loctite 620
Loctite 511
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MARMON COUPLING
UNDER NORMAL OPERATINGCONDITIONS THE MARMON
TYPE COUPLING SHOULD
GIVE MANY YEARS OF
TROUBLE FREE SERVICE,
HOWEVER IF THE 2nd STAGE
AIREND
MUST BE REMOVED
USE THE FOLLOWING
PROCEDURE FOR
REINSTALLATION
IF RUBBER SEALS ON
COUPLING HAVE BECOME
HARD AND BRITTLE A NEWCOUPLING SHOULD BE
ORDERED
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CONDENSATE DRAIN
THE CONDENSATE DRAINS
SHOULD BE CHECKED FOR
PROPER OPERATION EVERY 8
HOURS OF OPERATION OR
DAILY.
THE CONDENSATE DRAIN Y-STRAINER SHOULD BE
CLEANED AFTER THE FIRST
150 HOURS OPERATION AND
INSPECTED ONCE A YEAR,
EVERY 8000 HOURS OR ANY
TIME THAT AIR DOES NOTPURGE FROM DRAIN VALVES
WHEN THE VALVE IS OPEN.
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OIL PUMP
THERE ARE NO
SERVICEABLE PARTS
WITH THE OIL PUMP,
THEREFORE IF PROBLEMS
ARE ENCOUNTERED WITH
PUMP OPERATION EITHER
THE PUMP AND/OR THE
PUMP COUPLING MUST BE
REPLACED
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AIRENDS
THERE ARE NO
SERVICEABLE PARTS
WITHIN THE AIREND SO
WHEN A PROBLEMDEVELOPS WHICH IS
DETERMINED TO BE
INTERNAL TO THE
AIREND, THE AIREND WILL
HAVE TO BE REPLACED
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Si M i T i i
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Check Valve Inspection
To be inspected annually
Check valve kit available
Gasket special material for high temp
Si M i T i i
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Cycles per minute ervice ours
3
ver Minute
Inlet Valve Service Calculator
Si M i T i i
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Inlet vacuum
75 kW 0.64 / 0.67 BAR
90 kW 0.65 / 0.77 BAR
110 kW 0.76 / 0.81 BAR
132 kW 0.82 / 0.85 BAR
150 kW 0.82 / 0.85 BAR
( PERFECT VACUUM IS 1.0132 BAR)
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Control Valve Servicing
Three major componentsr Inlet valve
Nothing serviceable
Adjust to .012 unloadedr Hydraulic cylinder
Rebuild kit available
r Blowdown valve
Rebuild kit available
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Blowdown Valve
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Blowdown Valve
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Blowdown Valve
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Blowdown Valve
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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Inlet Valve Assembly
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0.3 mm
Inlet Valve Assembly
Sierra Main Training
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INLET VALVE
HYDRAULIC CYLINDER COMPLETE
S37 - 75kW CPN 39862859
S90 - 150kW CPN 39862826
HYDRAULIC CYLINDER KITS
S37 - 75kW CPN 39862875
S90 - 150kW CPN 39862834
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INLET VALVE
BLOWDOWN VALVE COMPLETE
S37 - 75kW CPN 39862867
S90 - 150kW CPN 39862396
BLOWDOWN VALVE KITS
S37 - 75kW CPN 39876016
S90 - 150kW CPN 39876008