Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 440 bulletins for KENWORTH
TIB-E-017
Dec 2, 2010
117000 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
PACCAR: THERE ARE PRODUCT IMPROVEMENTS TO THE TEMPERATURE SENSORS. *RM
TIB-43-017
Oct 28, 2010
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
KENWORTH (PACCAR): CAMPAIGN TO INSPECT FOR MISSING EXHAUST GASKETS. CHASSIS LISTED MAY HAVE BEEN MANUFACTURED WITHOUT AN UPPER EXHAUST PIPE GASKET. EQUIPPED WITH PACCAR MX ENGINES ONLY. *PE
TIB-E012
Oct 28, 2010
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH TRUCK: PACCAR MX ENGINE BOOST PRESSURE SENSOR WIRE CHAFING. CHASSIS WERE BUILT WITH WIRES FOR THE BOOST PRESSURE SENSOR THAT DO NOT MEET QUALITY STANDARDS WITH REGARD TO CHAFING, RUBBING OR RESISTANCE TO WEAR. RUBBING AND CHAFIN
TIB-99-018
Oct 1, 2010
355100 EQUIPMENT:OTHER:LABELS
KENWORTH SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. DOOR LABEL (GAWR, GVWR) REPLACEMENT CAMPAIGN. THE GROSS AXLE AND GROSS VEHICLE WEIGHT RATINGS (GAWR AND GVWR RESPECTIVELY) LISTED ON THE DOOR CERTIFICATION LABEL, MAY
TIB-E-010
Oct 1, 2010
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. PACCAR PX-6 AND PX- 8 ENGINE SOFTWARE AND AFTERTREATMENT UPDATES. THE IDENTIFIED CHASSIS REQUIRE A PRODUCT IMPROVEMENT INVOLVING RECALIBRATION OF THE ENGINE CONTROL MO
TIB-03-041
Sep 23, 2010
061000 ENGINE AND ENGINE COOLING:ENGINE
KENWORTH SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE ODOMETER MAY INACCURATELY RECORD MILEAGE. THE FOG LAMP CIRCUIT MAY NOT WORK WITH THE INSIDE SWITCH. SOME CHASSIS HAVE INACCURATE CHASSIS WEIGHT ON THE DOOR LABEL. *
82610
Aug 26, 2010
061000 ENGINE AND ENGINE COOLING:ENGINE
CATERPILLAR C15 OR CUMMINS ISX ENGINES EXPERIENCING PREMATURE FAILURE OF THE FAN HUB BEARINGS. *KB
TIB-34-037
Aug 19, 2010
113200 ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY
PACCAR: THE STARTER RELAY CONSTANTLY CLICKS WHILE THE HEADLIGHTS ARE ON BUT EVERYTHING ELSE IS OFF. THIS IS DUE TO SOFTWARE PROBLEMS. *RM
TIB-02-108
Jul 23, 2010
220000 SEATS
KENWORTH TRUCK: BENCH SEAT CAMPAIGN. A SINGLE OCCUPANT SENSOR WAS INSTALLED IN TWO PERSON BENCH SEATS. DEPENDING UPON WHERE A PASSENGER(S) SITS, THE SENSOR MAY INDICATE THERE ARE NO PASSENGERS OR IT WILL INDICATE THERE ARE TWO PASSENGERS
TIB-02-107
Oct 7, 2009
162800 STRUCTURE:BODY:HOOD
KENWORTH TRUCK SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. METTON HOOD REPAIR CAMPAIGN. HOOD REINFORCEMENT CHANNEL CRACKING DUE TO UNIQUE, HARSH SERVICE CONDITIONS. NOTE: CODE 02107 IS NOT AN INSTRUCTION FOR DEALERS TO
TIB-26-17
Oct 7, 2009
102000 POWER TRAIN:MANUAL TRANSMISSION
KENWORTH TRUCK SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE OIL SLINGER THREADS ON INPUT SHAFTS OF IDENTIFIED 10 SPEED TRANSMISSION WERE MACHINED INCORRECTLY. THIS DEFECT WILL CREATE A SLOW FLUID LEAK AT THE INPUT SH
TIB-04-12
Sep 30, 2009
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
KENWORTH: CENTER FAIRING RATTLING LOOSE CAUSING DAMAGE TO FAIRING SUPPORT TUBES. ANY T660S EQUIPPED WITH FULL CHASSIS FAIRINGS. NO MODEL YEARS LISTED. *PE
TIB-34-34
Sep 29, 2009
121000 EXTERIOR LIGHTING:HEADLIGHTS
KENWORTH TRUCKS: HEADLIGHT MOISTURE REPAIRS. BEADS OF MOISTURE OR POOLING WATER VISIBLE THROUGH THE HEADLIGHT LENSES. INSPECT FOR MISSING HEADLIGHT VENT AND/OR ROCK SHIELD AND REPAIR AS NECESSARY. *PE
TB-22-12
Sep 28, 2009
023000 SUSPENSION:MULTIPLE AXLE
KENWORTH TRUCK SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A NEW STANDARD AXLE LUBE WOULD BE STANDARD INCHASSIS BEGINNING 9/15/08. THE CHASSIS LISTED WERE MANUFACTURED AFTER THAT DATE BUT WITH THE PREVIOUS STANDARD LUBE.
TIB-99-13
Sep 23, 2009
102000 POWER TRAIN:MANUAL TRANSMISSION
KENWORTH TRUCK SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. TRANSMISSION DRIVER INSTRUCTIONS MANUAL CAMPAIGN. THE WRONG EATON TRANSMISSION DRIVER INSTRUCTIONS MANUAL MAY HAVE BEEN DELIVERED WITH IDENTIFIED CHASSIS.
TIB-26-16
May 27, 2009
103000 POWER TRAIN:AUTOMATIC TRANSMISSION
KENWORTH SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. AUTOMATIC TRANSMISSION SUPPORT SPRING BRACKET WELD CAMPAIGN. C500 AND K500 WITH FRONT DRIVE AXLES AND ALLISON WORLD SERIES AUTOMATIC TRANSMISSIONS, ARE AFFECTED. INSPE
01-55
Mar 18, 2009
110000 ELECTRICAL SYSTEM
KENWORTH: CLEAN POWER SYSTEM HIGH VOLTAGE REPAIR. HIGH VOLTAGE WARNING LIGHT ON THE VOLTMETER. T660S BUILT AND EQUIPPED WITH THE KENWORTH CLEAN POWER SYSTEM SINCE 05/25/07. *PE UPDATED 9/29/09. *PE
TIB-01-56
Mar 18, 2009
112000 ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
KENWORTH: WHEN CHARGING KENWORTH CLEAN POWER SYSTEM STORAGE COOLER, THE INVERTER MAY TRIP, CAUSING THE COMPRESSOR OPERATION TO SHUT DOWN. A RED LIGHT ON SLEEPER CONTROL PANEL WILL ILLUMINATE AS AN INDICATION OF THIS FAULT.
TIB-42-42
Jan 7, 2009
062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
KENWORTH SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. C15 UPPER WATER PIPE REPLACEMENT CAMPAIGN. RADIATOR CORE MAY CRACK AROUND WATER INLET PORT. T800 WITH WIDE HOOD CONFIGURATION AND C15 ENGINES, BUILT 8/18/06-9/10/08.
TIB-42-41
Dec 3, 2008
062100 ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
KENWORTH SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. TOP TANK REPLACEMENT FOR C500 AND W900 WITH ISX; FIELD CAMPAIGN. EARLY DESIGN TOP TANKS ON 1430 SQUARE INCH RADIATORS FOR 2007 EMISSIONS COMPLIANT ENGINES CAN CREATE C
TIB-45-36
Dec 3, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THIS IS A FIELD CAMPAIGN TO MODIFY THE TURBOCHARGER OIL DRAIN PLUMBING. MODEL T300, MY 12/13/06-07/09/08. CSC LETTER REC'D. *PE
TIB-43-15
Nov 26, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH TRUCK: EXHAUST GASKETS IN 2007 EMISSIONS COMPLIANT ENGINES. EXHAUST LEAKS BETWEEN THE TURBO AND DIESEL PARTICULATE FILTER (DPF) CAN RESULT IN ENGINE REGENERATION FAULT CODES, WHITE SMOKE AND/OR A SOOT LEAK PATH ON THE PIPE. MODEL
TIB-45-34
Nov 5, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH TRUCK: PX 6 ENGINE CALIBRATION. PACCAR CAMPAIGN C0836. TO UPGRADE THE ENGINE CONTROL SOFTWARE FOR THE PACCAR PX 6 ENGINE TO ENHANCE PERFORMANCE AND RELIABILITY.
TIB-45-35
Nov 5, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH TRUCKS: PX-8 AND CUMMINS ISL ENGINE CALIBRATION CAMPAIGN C0844. UPGRADE ENGINE CONTROL SOFTWARE FOR PACCAR PX 8 AND CUMMINS ISL ENGINES TO ENHANCE PERFORMANCE AND RELIABILITY. *PE
TSB-41-13
Nov 5, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH TRUCK: AIR INTAKE FOR PRE-2007 ISM ENGINE IN T800 SHORT HOOD CHASSIS. PREMATURE ENGINE WEAR DUE TO DIRT INGESTION INVOLVING THE 2002-07 T800 SHORT HOOD (SH) MODEL WITH CUMMINS ISM ENGINE. *PE