Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 526 bulletins for WESTERN STAR
WSB-35-4
Sep 1, 2014
350000 EQUIPMENT
WESTERN STAR: THE EXTERNAL BREATHER, ON FORWARD REAR DIFFERENTIAL CARRIER, HAS AN OIL LEAK AND A REMEDY FOR THE LEAK IS AN ADDITIONAL INTERNAL BREATHER, THAT IS AVAILABLE TO BE INSTALL. *PE
54-55
Aug 1, 2014
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
54-55 - Virtual Technician Retrofit
54-59
Jul 1, 2014
111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
54-59 - Cadex Battery Tester Printer Not Operating
SB-00-15
Jul 1, 2014
160000 STRUCTURE
WESTERN STAR: REFERENCE PERTAINING TO TRAINING, FOR INITIAL DIAGNOSIS OF VIBRATION AND HARSH RIDE PROBLEMS. MODEL CONSTELLATION, HERITAGE, 4700, 4800, 4900, 5900, 6900. NO MODEL YEARS. *PE
14 TS- 13REV
May 20, 2014
060000 ENGINE AND ENGINE COOLING
"Major fuel system damage can occur when DEF is introduced into the fuel system. A no-start condition, engine overspeed, or engine ran backwards complaints can all be caused by DEF in the fuel system. Likewise, DEF system damage can occur
WSTCAE123-2014
Apr 7, 2014
350000 EQUIPMENT
Administration - Revised Truck Change Order Policy Administration - TIA System Enhancements
FSC-SF-498-A
Apr 1, 2014
162800 STRUCTURE:BODY:HOOD
DAIMLER TRUCKS: DURING ENGINE ROLL, INSIDE OF HOOD, AND BETWEEN HOOD TILT-ASSIST MOUNTING BRACKETS, IS AN INTERFERENCE DUE TO BRACKETS ARE DIFFERENT IN SIZE. *PE
SB-20-18
Apr 1, 2014
062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
WESTERN STAR: THERE ARE RADIATOR FAILURES RESULTING IN COOLANT LEAK DUE TO A COOLANT TUBE HAVING A CRACK AND NEED AN UPDATED ISOLATED ENGINE MOUNT, IF THERE IS A CRACK IN COOLANT TUBE. *PE UPDATED 6/26/14. *PE
WS-49-14
Mar 1, 2014
081100 FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
WESTERN: THE 13 AND 23 GALLON DIESEL EXHAUST FLUID (DEF) TANKS TAKE COMPRESSION SET AND LEAKS, AT O RINGS IN COOLANT VALVE DURING EXTREME COLD CONDITIONS AND AN O RING REPLACEMENT IS AVAILABLE TO FIX LEAK. *PE
49-13
Feb 1, 2014
070000 FUEL SYSTEM, GASOLINE
49-13 - DEF Return Line Fitting Heater, 6-Gallon Tanks
54-57
Feb 1, 2014
110000 ELECTRICAL SYSTEM
54-57 - Powernet Troubleshooting Guide: Batteries, Path, Alternator, and Starter
SB-54-57
Feb 1, 2014
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
WESTERN STAR: TROUBLESHOOTING INFORMATION REGARDING POWERNET ASSESSMENT WORKSHEET GUIDE FOR STARTING ISSUES, ALTERNATOR, PATH, BATTERY AND CHARGING OF VEHICLES WITH SEPARATE CABLE VOLTAGE DROP CHECKS. MODEL CONSTELLATION, 4800, 5900, HERI
SF490
Feb 1, 2014
106000 POWER TRAIN:AXLE ASSEMBLY
SF490-DLR Western Star 4700 Forward Rear Axle Wiring
WS-49-13
Feb 1, 2014
081100 FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
WESTERN STAR: AT RETURN LINE FITTING, DURING COLD EXTREME TEMPERATURES, THE DIESEL EXHAUST FLUID (DEF) TANK WOULD FREEZE. *PE
WSTCAE121-2014
Jan 25, 2014
030000 SERVICE BRAKES, HYDRAULIC
AIR BRAKE RESERVOIRS - NEW TRIPLE CHAMBER AIR TANK
WSTCAE120-2013
Dec 20, 2013
040000 SERVICE BRAKES, AIR
AIR DRYER - Bendix Introduces the AD-9si to Replace the AD-IP. ADMINISTRATION - CAE Holiday Schedule
SF-485-AB
Dec 1, 2013
021230 SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM
DAIMLER TRUCK: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INFORMATION PROVIDED REGARDING THE REPLACEMENT OF THE FRONT AXLE SPRINGS (18,000LB), ON SOME TRUCKS, WITH 20,000LB FRONT AXLE SPRINGS. *PE
WSB-20-20
Dec 1, 2013
062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
WESTERN STAR: INFORMATION PROVIDED REGARDING REPLACEMENT OF STANDARD RADIATOR MOUNT WITH AN ISOLATED MOUNT RADIATOR. *PE