2001 Western Star Constellation TSBs
13 Technical Service Bulletins across 7 categories
Suspension
3 bulletinsWESTERN STAR: LUBRICATE WHEEL BEARINGS, REAR DRIVE AXLES.
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*JS
WESTERN STAR TRUCKS: INFORMATION ON WHEEL BEARING LUBRICATION IN THE REAR AXLE.
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*RM
WESTERN STAR TRUCKS: THE REAR SUSPENSION AIR-SPRING ASSEMBLY HAS BEEN REDESIGNED.
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*RM
Engine
3 bulletinsWESTERN STAR: TRW TAS85 STEERING GEAR INTERNAL LEAKAGE TEST.
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SOME TRW TAS85 STEERING GEARS HAVE BEEN EQUIPPED WITH AN INTERNAL RELIEF VALVE. THESE STEERING GEARS ARE TYPICALLY INSTALLED WITH POWER STEERING PUMPS THAT HAVE A PRESSURE RELIEF RATING GREATER THAN 2175 PSI (150 BAR). THE INTERNAL RELIEF VALVE LIMITS MAXIMUM SUPPLY PRESSURE TO PROTECT THE STEERING GEAR. NO MODEL YEARS LISTED. *PE
WESTERN STAR: VEHICLES EQUIPPED WITH AN MBE4000 ENGINE AND AN ALLIANCE FUEL/WATER SEPARATOR MAY HAVE INSUFFICIENT...
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CLEARANCE BETWEEN THE ENGINE MOUNTED FUEL LINE AND THE FRAME RAIL MOUNTED FUEL/WATER SEPARATOR MOUNTING BRACKET. NO MODEL YEARS LISTED. *PE
WESTERN STAR: SOME BARKSDALE HEIGHT CONTROL VALVES HAVE BEEN RETURNED FOR WARRANTY BECAUSE FOUR BOLTS IN THE VALVE...
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HOUSING WERE OVERTIGHTENED, OFTEN, ENOUGH TO CRACK VALVE HOUSING. MODEL YEARS UNKNOWN. *PE
Fuel System
2 bulletinsWESTERN STAR: AROUND THE DIESEL EXHAUST FLUID (DEF) AN EXCESSIVE AMOUNT OF CRYSTAL OR POWDER BUILT UP INDICATES A LEAK...
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CAUSED BY EVAPORATION OF DEF EXPOSED TO AIR AND/OR DAMPNESS. *PE
WESTERN STAR TRUCKS: FUEL LINE FITTING REPLACEMENT INFORMATION.
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*RM
Other
2 bulletinsWESTERN STAR TRUCKS: THERE ARE NEW CGI BELLOWS DUE TO CURRENT ONES THAT ARE PRONE TO FAILURE.
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*RM
WESTERN STAR: CAB FRONT CROSSMEMBER RETROFIT; 109BBC RAISED CAB.
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SOME RAISED CAB TRUCKS HAVE EXPERIENCED FAILURES OF THE CAB FRONT CROSSMEMBER AN ALTERNATE CROSSMEMBER HAS BEEN DESIGNED. NO MODEL YEARS LISTED. *PE
Steering
1 bulletinWESTERN STAR TRUCKS: THE PROCEDURE TO REPLACE THE POWER STEERING PUMP WITH A DIFFERENT VERSION PUMP.
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*RM
Body & Paint
1 bulletinWESTERN STAR TRUCKS: INSTRUCTIONS TO REMOVE, INSPECT, AND RESEAL THE LOWER PINION COVER ON THE REAR AXLES.
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*RM
Pre-Delivery & Maintenance
1 bulletinWESTERN STAR TRUCK: 5 PIECE BACK OF CAB SERVICE CROSSMEMBER.
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5 PIECE BOLTED SERVICE CROSSMEMBERS ARE AN IMPROVED, MORE DURABLE SERVICE REPLACEMENT FOR THE TUBULAR BACK OF CAB CROSSMEMBERS. FOLLOW STEPS TO REPLACE A TUBULAR BACK OF CAB CROSSMEMBER, WITH A 5 PIECE SERVICE CROSSMEMBER. *PE