Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 440 bulletins for KENWORTH
TIB-34-053
Jun 26, 2014
120000 LIGHTING (PWS)
KENWORTH: WHILE DRIVING SOME TRUCKS, THE COMBINATION OVERDOOR LAMP WILL FLICKER AND DEFECTIVE LAMPS WILL NEED TO BE REPLACED. MODEL T680. *PE
TIB-E-098
Jun 26, 2014
356000 EQUIPMENT ADAPTIVE/MOBILITY
KENWORTH: ON SOME TRUCKS, WITHOUT OPENING SUPPORTLINK CASE, A SEARCHABLE KNOWLEDGE BASE HAS BEEN DEVELOPED TO PROVIDE TECHNICIANS WITH SOLUTIONS TO COMMON ISSUES. *PE
TIB-43-040
Jun 24, 2014
355100 EQUIPMENT:OTHER:LABELS
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THERE IS AN INCORRECT FAMILY NAME ON GREENHOUSE GAS COMPLIANCE LABEL AND NEEDS TO BE REPLACED. MODEL T370, T440, T660, T800. *PE
TIB-13-037
Jun 16, 2014
350000 EQUIPMENT
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON SOME TRUCKS, THE AIR DRYER BRACKET WILL CRACK AND BECOME LOOSE, RESULTING IN FAILURE. MODEL T680. *PE
TIB-14-024
Jun 16, 2014
091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
KENWORTH: ON SOME TRUCKS, CROSS BRACE AND FUEL TANK WILL CONTACT DUE TO INSUFFICIENT CLEARANCE AND NEED TO REPLACE, AND REMOVE, CROSS BRACE, AND IF ANY DAMAGE TO FUEL TANK, REPLACE. MODEL T680. *PE
TIB-E-091
Jun 2, 2014
060000 ENGINE (PWS)
KENWORTH: INFORMATION ON A LOOSE INJECTOR OR HIGH PRESSURE FUEL LINE FAILURE, THAT IS ALLOWING FUEL TO LEAK, ON SOME TRUCKS. *PE
TIB-E-086
May 27, 2014
118000 ELECTRICAL SYSTEM:SOFTWARE
KENWORTH: SOFTWARE NEEDS UPDATING FOR LATEST VERSION OF PARAMETERS THAT IS NEEDED AND AFTER CHANGES ARE MADE, DOWNLOAD BECOMES AVAILABLE BEFORE RETRIEVING NEW SOFTWARE ON DAVIE4. *PE
TIB-E-095
May 22, 2014
060000 ENGINE (PWS)
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON SOME TRUCKS, THE REGENERATIONS IS TOO FREQUENT, THE DPF HIGH PRESSURE MALFUNCTION INDICATOR LAMP IS ON AND SOOT LEVEL IS HIGH 3 AND 4. *PE
TIB-E-094
May 16, 2014
060000 ENGINE (PWS)
KENWORTH: ON SOME TRUCKS, THERE IS A NO CRANK OR NO START. *PE
TIB-02-135
May 9, 2014
162800 STRUCTURE:BODY:HOOD
KENWORTH: PROCEDURAL INFORMATION PROVIDED REGARDING THE REPLACEMENT OF HOOD WHERE THERE ARE DAMAGED HOOD POCKETS. MODEL T800. *PE
TIB-02-134
Apr 23, 2014
162800 STRUCTURE:BODY:HOOD
KENWORTH: THE HOOD SIDE STRUT MOUNTS MAY DEVELOP CRACKS AND HOOD SHELL IS UPDATED AND PARTS ARE DEVELOPED TO REPLACE HOODS. MODEL T880. *PE
TIB-42-052
Apr 16, 2014
350000 EQUIPMENT
KENWORTH: TWO RELATED ISSUES CONCERNING MISDIAGNOSE LOW COOLANT CONDITION AND UNNECESSARY COOLANT PUMP REPLACEMENT DUE TO NOT ABLE TO DIFFERENTIATE BETWEEN NORMAL SEEPAGE OF COOLANT AND A TRUE LEAKAGE FROM PUMP. MODEL T680, T880. *PE
TIB-E-080
Apr 1, 2014
060000 ENGINE (PWS)
KENWORTH (REVISION): MALFUNCTION INDICATOR LIGHT (MIL) IS ON, DUE TO CRANK CASE VENTILATION (CCV) MODULE OPERATING UNDER SPEED AND WARRANTY SECTION IS UPDATED SHOWING NEW QUICK CLAIMS (FIX AS FAIL). *PE
TIB-43-037
Mar 27, 2014
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
KENWORTH: ON SOME CHASSIS, BECAUSE OF A SENSOR TUBE BLOCKAGE, THE DIESEL PARTICULATE FILTER (DPF) IS EITHER NOT SHOWING UP OR THERE IS A HIGH PRESSURE READING. *PE
TIB-E-089
Mar 25, 2014
356000 EQUIPMENT ADAPTIVE/MOBILITY
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. DUE TO THE VIP SERVICE PROGRAM ENDING, THE DATA LOGGERS ARE BEING REMOVED FOR SOME CHASSIS. *PE
082
Mar 21, 2014
060000 ENGINE (PWS)
KENWORTH HAS DETERMINED THAT CHASSIS BENEFIT FROM ENGINE SOFTWARE UPDATES. *LJ
TIB-42-051
Mar 21, 2014
062200 ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
KENWORTH: DURING COLD WEATHER CONDITIONS, ENGINES ARE BEING OVER COOLED WITH TWO (2) SPEED HORTON FAN AND TO KEEP ENGINE FROM REACHING NORMAL OPERATING TEMPERATURES, SOME TIMES JUST ENOUGH AIR IS MOVED ACROSS RADIATOR. *PE
TIB-99-027
Mar 20, 2014
356000 EQUIPMENT ADAPTIVE/MOBILITY
KENWORTH: PROCEDURAL INFORMATION ON HOW TO RUN ENGINE RAPIDO AND K270/K370 RAPIDO, TWO VERSIONS, AT SAME TIME. *PE
TIB-E-083
Mar 12, 2014
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH: THE MALFUNCTION INDICATOR LIGHT (MIL), ON DASH, IS ON, DUE TO CRANK CASE VENTILATION (CCV) MODULE, OPERATING UNDER SPEED. *PE
TIB-43-034
Mar 10, 2014
063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
KENWORTH: INFORMATION PROVIDED REGARDING NEW AFTERMARKET SYSTEM AND PROCESS REQUIREMENTS, ON THE FUNCTIONS, VEHICLE SPEED LIMITER (VSL), ENGINE IDLE SHUTDOWN TIMER (EIST), THAT ARE PROGRAMMED, WITH GREENHOUSE GAS (GHG) RESTRICTIONS.
TIB-E-081
Mar 10, 2014
060000 ENGINE (PWS)
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. UPDATED SOFTWARE INFORMATION, ON ENGINES, REGARDING CHASSIS BUILT 01/2009-02/20013. *PE
RN114-1
Feb 10, 2014
162310 STRUCTURE:BODY:DOOR:HINGE AND ATTACHMENTS
MODEL 579 AND 567 MAY HAVE LOOSE DOOR HANDLES DUE TO BRACKETS. *LJ
TIB-E-085
Jan 29, 2014
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH: THE FLEXNET CONNECT, AUTOMATIC UPDATING SERVICE, IS NOT SENDING NOTIFICATIONS, CURRENTLY, OR ALLOWING DOWNLOAD FO DAVIE4 UPDATES AND GET TO 80% AND FAILS BEFORE GOING THROUGH AND A WORKAROUND HAS BEEN PROVIDED.
TIB-43-035
Jan 20, 2014
060000 ENGINE (PWS)
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SOME TRUCKS, WITH DEF TANK HARNESS P92-8255 PINS 4 AND 6, MAY HAVE SYMPTOMS OF DASH LIGHTS (CEL AND/OR MIL) LOGGED FAULT CODE 3375 AND/OR 3376, FOR FREQUENT AND INCOMPLETE REGENERATIO
TIB-13-036
Nov 4, 2013
035000 SERVICE BRAKES, HYDRAULIC:FLUID
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON CERTAIN TRUCKS/CHASSIS, THE HYDRAULIC BRAKES HAS A ROUTING BRACKET, THAT WAS INSTALLED, THAT SHOULD BE REMOVED. MODEL 2013 T300. *PE