Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 440 bulletins for KENWORTH
TIB-16-033
Aug 5, 2011
021243 SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:SHACKLE
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-34-038
Aug 5, 2011
114000 ELECTRICAL SYSTEM:WIRING
PACCAR: THE SECONDARY FOG LAMPS WILL NOT RESPOND TO THE IN CAB SWITCH. *RM
TIB-E039
Aug 5, 2011
061000 ENGINE AND ENGINE COOLING:ENGINE
PACCAR: SOFTWARE UPDATE INFORMATION. *RM
TIB-41-014
Aug 1, 2011
062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
PACCAR: THERE ARE COOLING MODULES THAT MAY HAVE A LOOSE CONNECTION AT THE CHARGE AIR COOLER MOUNTING. *RM
TIB-42-043
Aug 1, 2011
062200 ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
PACCAR: INFORMATION ON FAN HUB BEARINGS INSPECTION AND WARRANTY EXTENSION DUE TO A HIGHER THAN NORMAL FAILURE RATE. *RM
TIB-42-48
Jul 6, 2011
062200 ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
PACCAR: INFORMATION ON PREMATURE FAN CLUTCH LINING WEAR. *RM
TIB-13-32
Jun 17, 2011
040000 SERVICE BRAKES, AIR
PACCAR: VEHICLES WERE BUILT WITH MISSING REAR AXLE CAMSHAFT BRACES. *RM
TIB-E-033
Jun 7, 2011
062000 ENGINE AND ENGINE COOLING:COOLING SYSTEM
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
May 24, 2011
063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
PACCAR SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SOME KENWORTH VEHICLES ARE MISSING AN EMISSIONS COMPLIANCE LABEL. *RM
TIB-15-20
May 11, 2011
015200 STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS
PACCAR SERVICE BULLETIN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE HYDRAULIC HOSE MAY HAVE BEEN IMPROPERLY ROUTED. KENWORTH C500. *RM
TIB-E-020
Mar 28, 2011
060000 ENGINE AND ENGINE COOLING
PACCAR: A COOLANT SIEVE MUST BE REMOVED AT THE FIRST ENGINE OIL CHANGE. *RM
TIB-E-029
Mar 24, 2011
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
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
TIB-E-030
Mar 15, 2011
060000 ENGINE AND ENGINE COOLING
PACCAR SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER.CAMPAIGN TO REPLACE THE WATER PUMP. *RM
TIB-E-027027
Mar 8, 2011
072200 FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
PACCAR: FUEL LINE ROUTING PROCEDURE. *RM
TIB-43-019
Feb 22, 2011
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
PACCAR: THE CHASSIS NEED PRE-PRODUCTION PARTS REMOVED AND RETROFITTED WITH PRODUCTION PARTS. *RM
SB-43-018
Feb 18, 2011
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
PACCAR: THE CHASSIS NEED PRE-PRODUCTION PARTS REMOVED AND RETROFITTED WITH PRODUCTION PARTS. *RM
02-111
Feb 1, 2011
023100 SUSPENSION:MULTIPLE AXLE:TORQUE ARM
PACCAR: TWO REAR CAB FASTENERS MAY NOT HAVE THE PROPER TORQUE. *RM
43-020
Feb 1, 2011
061000 ENGINE AND ENGINE COOLING:ENGINE
PACCAR: THE CHASSIS NEEDS TO HAVE PRODUCTION PARTS INSTALLED AND PRE-PRODUCTION PARTS REMOVED. *RM
TIB-E-023
Jan 27, 2011
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
PACCAR SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THERE HAVE BEEN UPDATES TO THE ENGINE SOFTWARE. *RM
TIB-E-019
Dec 16, 2010
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
PACCAR: SOFTWARE UPDATES HAVE RESULTED IN CHECK ENGINE LIGHTS COMING ON. *RM
TIB-26-019
Dec 15, 2010
101000 POWER TRAIN:CLUTCH ASSEMBLY
PACCAR: THE TRANSMISSION AND CLUTCH MOUTNING BOLTS ARE DEFECTIVE AND MAY CRACK. THERE MAY BE NOISE, VIBRATION, OR DIFFICULTY SHIFTING. *RM
TIB-E011
Dec 15, 2010
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
PACCAR: ENGINEERING STANDARDS HAVE CHANGED AND THERE ARE NOW ENGINES WITH HEAT TREATED BOLTS. *RM
TIB-E-009
Dec 2, 2010
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
PACCAR: A SOFTWARE UPDATE IS CAUSING THE CHECK ENGINE LIGHT TO COME ON. *RM
TIB-E-014
Dec 2, 2010
073000 FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM
PACCAR: FUEL INJECTION LINE REPLACEMENT INFORMATION. *RM
TIB-E-016
Dec 2, 2010
061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
PACCAR: THE TURBOCHARGER SUPPORT BRACKET HAS BEEN UPDATED. *RM