Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
24KWD
Service Bulletin/Repair Instructions
Certain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume requirements per FMVSS/CMVSS 121 âÂÂAir Brake SystemsâÂÂ. This bulletin will be updated when repair parts and procedures are available.
02-160
Service Bulletin/Repair Instructions
Information Only â Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
32-015
Service Bulletin/Repair Instructions
Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
32-016
Service Bulletin/Repair Instructions
Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
34-085
Service Bulletin/Repair Instructions
Information Only â Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead to water intrusion and corrosion in some vehicles.
03-071
Service Bulletin/Repair Instructions
Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer. The issue can be temporarily resolved using any one of the included procedures.
01-075
Service Bulletin/Repair Instructions
Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
TIB43-062
Service Bulletin/Repair Instructions
Information Only â This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP).
27-026
Service Bulletin/Repair Instructions
Eaton ultrashift plus excessive engine over-speed lamp on.
E065
Service Bulletin/Repair Instructions
MX RC5-RC14 SOFTWARE UPDATE CAMPAIGN. SOFTWARE UPDATES ARE SAID TO BENEFIT THE ENGINES IN RC5 AND RC14 KENWORTH ENGINES. PACCAR/KENWORTH. *KB
TIB-E061
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SPECIFIC PRODUCT IMPROVEMENT ELEMENTS ARE DESCRIBED IN BULLETIN FOR CHASSIS BENEFITING FROM ENGINE SOFTWARE UPDATES. MODELS 2010-2012 T660, T700, T800, W900. *PE
TIB-26-023
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. TRANSMISSION DOES NOT AUTOMATICALLY UPSHIFT WHEN HIGH IDLE SPEED OF ENGINE IS EXCEEDED DUE TO LACK OF PROPER CALIBRATION OF TRANSMISSION FOR-ENGINE. MODELS 2010-2012 T660, T700 AND T800. *PE
SB-45-045
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON CERTAIN TRUCKS, WITH CNG FUELED ENGINE, AND WITH ENGINE BRAKE, PROGRAMMING FAILED TO EFFICIENTLY COORDINATE ABS DEPLOYMENT AND NOT GET UPLOADED ON CHASSIS. MODEL 2011 T660. *PE
TIB-E-055
Service Bulletin/Repair Instructions
KENWORTH: OIL COLLECTION AT CAC INTAKE PIPE IS CAUSED BY AN IMBALANCE IN TURBOCHARGER PRESSURES. MODELS T660, T800, T700, AND W900. *PE
TIB-03-047
Service Bulletin/Repair Instructions
KENWORTH: DIAGNOSTICS INDICATE FAILED FUEL LEVEL SENSOR FUNCTION IN REPAIRS AND BEFORE COMPONENT IS REPLACED, DIAL FACE SHOULD BE CLEANED AND FAILURE VERIFIED. ALL KENWORTH MODELS WITH OHM DIAL OR OPEN CARD STYLE FUEL SENDERS. *PE
TIB-E-053
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. LINE FATIGUE FAILURE MAY BE DUE TO EXCESSIVE VIBRATIONS OF HIGH PRESSURE FUEL LINES AND DIESEL FUEL LEAK AND MALFUNCTION INDICATOR LAMP. *PE
TIB-E-056
Service Bulletin/Repair Instructions
KENWORTH (PACCAR): ENGINE SOFTWARE UPDATE REQUIRED FOR INSTALLATION OF HC DOSER SHIELDS AND/OR EGR CLEANING FOR CHASSIS. *PE
TIB-15-021
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE CHASSIS MAY NOT HAVE THE PROPER ASSEMBLY CONTROLS IN PLACE FOR DRAGLINK CONNECTIONS TORQUE. MODELS C500, K500, T660, T800 AND W900 2011-2012. *PE
TIB-36-003
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON CERTAIN CHASSIS, THE TRANSMISSION TEMPERATURE FAILS TO BE ON THE NAVPLUS DRIVER DISPLAY AND CERTAIN CAUTIONS AND WARNINGS APPROPRIATE FOR HIGHWAYS NEEDS TO BE DISABLED FOR RESIDENTIAL AREAS. *PE
TIB-34-041
Service Bulletin/Repair Instructions
KENWORTH: INFORMATION FOR AFTERTREATMENT, PMCI OR RELATED ISSUES, CAUSED BY CORROSION FOR WATER IN FUEL (WIF) SENSOR, AT ENGINE HARNESS J175 CONNECTOR. *PE
TIB-E-046
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE ORIGINAL STYLE OIL FILTER CAP SYSTEM IS BEING REPLACED BY AN IMPROVED OIL FILTER CAP LOCK SYSTEM. *PE
TIB-E-050
Service Bulletin/Repair Instructions
KENWORTH: ENGINE CONTROL UNIT (ECU), IDENTIFIED AS PMCI IN ENGINE RAPIDO, SHOULD HAVE A PROTECTIVE SHIELD FOR SOFTWARE UPDATES AND THE HC DOSER FITTING INSTALLED FOR AFTER AFTERTREATMENT CONTROL UNIT. *PE
TIB-43-23
Service Bulletin/Repair Instructions
KENWORTH: INFORMATION REGARDING REAR NOX SENSOR REPAIRS SHOULD INCLUDE SYSTEM UPDATES FOR CHASSIS OPERATING IN CONDITIONS WHICH RESULT IN MOISTURE RELATED SENSOR FAILURES WITH IMPROVED MOISTURE PROTECTION EXHAUST DESIGN FOR REAR NOX SENSOR. *PE
TIB-43-22
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. BULLETIN REFERS TO THE DUAL EXHAUST REAR NOX SENSOR MOISTURE PROTECTION CAMPAIGN. TO DIVERT MOISTURE FROM THE REAR (SCR OUTLET) NOX SENSOR THERE IS A NEW DESIGN FOR EXHAUST ELEMENT. *PE
TIB-E-045
Service Bulletin/Repair Instructions
KENWORTH: FOR CERTAIN TRUCKS, THE ENGINE CONTROL UNIT (ECU), IDENTIFIED AS PMCI IN ENGINE RAPIDO, AND AFTERTREATMENT CONTROL UNIT WILL BENEFIT FROM SOFTWARE UPDATES. *PE
TIB-26-21
Service Bulletin/Repair Instructions
KENWORTH: ON CERTAIN TRUCKS, THE EATON TRANSMISSIONS MAY BE SUSCEPTIBLE TO HAVING WATER INTRUSION WHICH CAN CAUSE THE ECU TO STOP WORKING. LOSS OF COMMUNICATION AND PRIMARY FUNCTION MAY REQUIRE REPLACEMENT OF THE ECU'S FAILURE MODE. *PE
TIB-E037
Service Bulletin/Repair Instructions
KENWORTH: POWER STEERING PUMP SPOOL VALVE DOES NOT MEET QUALITY STANDARDS. THERE MAY BE A LACK OF STEERING ASSIST OR HARD STEERING AT IDLE. *RM
TIB-44-19
Service Bulletin/Repair Instructions
PACCAR: WATER MAY SEEP BETWEEN THE WIRE INSULATION AND POTTING OF THE FUEL SENSOR. THERE MAY BE AN ERRATIC FALSE WARNING OF WATER IN FUEL. *RM
TIB-03-042
Service Bulletin/Repair Instructions
PACCAR: THE FUEL SENSORS MIGHT NOT HAVE A SEALANT PLUG WHICH COULD LEAD TO WATER INTRUSION, CORROSSION, AND FALSE READINGS. *RM
TIB-03-043
Service Bulletin/Repair Instructions
PACCAR INC: FUEL SENSOR INDICATING LESS THAN FULL WHEN THE TANK IS FULL. *RM
TIB-03-044
Service Bulletin/Repair Instructions
PACCAR INC: PROGRAMMING CAMPAIGN TO ALLOW PROPER WARNING TIME BEFORE FUEL TANK IS EMPTY. *RM
TIB-16-033
Service Bulletin/Repair Instructions
PACCAR: SHACKLE LINKS MAY HAVE BEEN MANUFACTURED INCORRECTLY AND HAVE PREMATURE CRACKING AND/OR A POSSIBLE BROKEN SHACKLE LINK. FAILURE OF ONE OR BOTH SHACKLE LINKS MAY RESULT IN THE VEHICLE PULLING TO ONE SIDE. *RM
TIB-E039
Service Bulletin/Repair Instructions
PACCAR: SOFTWARE UPDATE INFORMATION. *RM
TIB-41-014
Service Bulletin/Repair Instructions
PACCAR: THERE ARE COOLING MODULES THAT MAY HAVE A LOOSE CONNECTION AT THE CHARGE AIR COOLER MOUNTING. *RM
TIB-42-043
Service Bulletin/Repair Instructions
PACCAR: INFORMATION ON FAN HUB BEARINGS INSPECTION AND WARRANTY EXTENSION DUE TO A HIGHER THAN NORMAL FAILURE RATE. *RM
TIB-42-48
Service Bulletin/Repair Instructions
PACCAR: INFORMATION ON PREMATURE FAN CLUTCH LINING WEAR. *RM
TIB-13-32
Service Bulletin/Repair Instructions
PACCAR: VEHICLES WERE BUILT WITH MISSING REAR AXLE CAMSHAFT BRACES. *RM
TIB-E-033
Service Bulletin/Repair Instructions
PACCAR SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THERE MAY HAVE BEEN IMPROPER TORQUE TO THE ENGINE COOLANT FILTER WHICH COULD LEAD TO LEAKING AND ENGINE OVERHEATING. *RM
TIB-E-032
Service Bulletin/Repair Instructions
PACCAR SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SOME KENWORTH VEHICLES ARE MISSING AN EMISSIONS COMPLIANCE LABEL. *RM
TIB-E-020
Service Bulletin/Repair Instructions
PACCAR: A COOLANT SIEVE MUST BE REMOVED AT THE FIRST ENGINE OIL CHANGE. *RM
TIB-E-029
Service Bulletin/Repair Instructions
PACCAR: THERE MAY BE FALSE TORQUE READINGS AND A POTENTIAL FOR LOOSENING AND/OR LEAKS OF THE DOSER SUPPLY LINE SWIVEL NUT. THIS IS DUE TO IT NOT BEING LUBRICATE PRIOR TO ASSEMBLY. *RM
43-020
Service Bulletin/Repair Instructions
PACCAR: THE CHASSIS NEEDS TO HAVE PRODUCTION PARTS INSTALLED AND PRE-PRODUCTION PARTS REMOVED. *RM
TIB-E011
Service Bulletin/Repair Instructions
PACCAR: ENGINEERING STANDARDS HAVE CHANGED AND THERE ARE NOW ENGINES WITH HEAT TREATED BOLTS. *RM
TIB-E-009
Service Bulletin/Repair Instructions
PACCAR: A SOFTWARE UPDATE IS CAUSING THE CHECK ENGINE LIGHT TO COME ON. *RM