Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 2,701 bulletins for MACK
FSB-263-039-01
Feb 1, 2014
062200 ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
MACK TRUCKS: THE HDMS COOL LOGIC ENGINE COOLING FAN DRIVE IS LEAKING FLUID FROM REAR DRIVE AND HDMS FAN DRIVE WAS REDESIGNED, DUE TO LEAKAGE, TO IMPROVE SEALING AND OVERALL DURABILITY OF DRIVE. MODEL 2013 CHU, CXU, GU, TD.
FSB-284-048
Feb 1, 2014
060000 ENGINE (PWS)
MACK TRUCK: DUE TO OIL CONTAMINATION INTO ENGINE WIRE HARNESS, MAIN OIL GALLERY PRESSURE SENSOR OR PISTON COOLING JET PRESSURE SENSOR HAS FAILED AND NEW ANTI WICKING JUMPER HARNESS IS AVAILABLE TO STOP OIL FROM WICKING BACK AND CAUSING DAM
FSB-313-005
Feb 1, 2014
111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
MACK TRUCKS: IMPROVEMENT WAS MADE FOR PROTECTION FOR STACKABLE BATTERIES FROM ENVIRONMENT TO PREVENT PREMATURE BATTERY CORROSION WITHIN THE BATTERY BOX. MODEL 2010-2013 GU. *PE
FSB-561-024
Feb 1, 2014
062300 ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
MACK TRUCK: THE INABILITY OF UNIT BUILDING AIR PRESSURE IS DUE TO BRASS COLLAR CRIMPED ONTO STAINLESS STEEL COMPRESSOR DISCHARGE LINE SPLITTING. MODEL LEU, MRU. *PE
PI-0837
Feb 1, 2014
060000 ENGINE (PWS)
MACK TRUCKS: INFORMATION AVAILABLE REGARDING THE ENHANCEMENTS FOR ENGINE CONTROL MODULE (ECM) SOFTWARE UPDATES TO ADDRESS COLD START TIME DELAY, IMPROVED SOOT LEVEL AND PISTON COOLING JET (PCJ) DIAGNOSTIC FAULT. MODEL 2013 CHU, CXU, GU, L
PI-0839
Feb 1, 2014
118000 ELECTRICAL SYSTEM:SOFTWARE
MACK TRUCK: TO ADDRESS PISTON COOLING JET (PCJ) DIAGNOSTIC FAULT, REGENERATIONS IN COLD CLIMATES (-20C), THE TRANSMISSION ELECTRONIC CONTROL UNIT (TECU), ENGINE CONTROL MODULE (ECM) AND AFTERTREATMENT CONTROL MODULE (ACM) HAVE UPDATED SOFT
PI-0841
Feb 1, 2014
060000 ENGINE (PWS)
MACK TRUCK: DUE TO MESSAGING SITUATION REGARDING INSTRUMENT CLUSTER AND ENGINE, THERE IS AN ACTIVE FAULT CODE, AND THE ENGINE HOURS IN THE INSTRUMENT CLUSTER IS NOT MATCHING THE ENGINE. MODEL 2013-2014 LEU, MRU. *PE
PI-0842
Feb 1, 2014
063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
MACK TRUCK: SOME TRUCKS HAVE PREPRODUCTION ENGINE EMISSION CERTIFICATION LABEL THAT NEEDS TO BE REMOVED AND REPLACED WITH UPDATED OR CORRECTED ENGINE EMISSION CERTIFICATION LABEL. MODEL 2014 CHU, CXU. *PE
PI 0840
Jan 27, 2014
118000 ELECTRICAL SYSTEM:SOFTWARE
ENGINE CONTROL MODULE (ECM) SOFTWARE UPDATE, SOFTWARE UPDATES WITH ENHANCEMENTS ARE AVAILABLE FOR THE ENGINE CONTROL MODULE (ECM) SOFTWARE UPDATES ADDRESS THE FOLLOWING. ? PISTON COOLING JET (PCJ) DIAGNOSTIC FAULT LOGIC ? REGENERATIONS IN C
SRA-M-0374
Jan 8, 2014
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
MACK: THERE IS AN AUTOMATIC ELECTRIC OVER SPEED PROTECTION SHUTDOWN THAT MONITORS DIESEL ENGINE RPM AND ENGINE SHUTDOWN IN EVENT OF AN OVER SPEED CONDITION, WHICH MAY BE CAUSED BY GASES, IN TRUCKS, IN OFF ROAD AREAS AND PULLED THROUGH AIR
FSB-284-046
Jan 1, 2014
070000 FUEL SYSTEM, GASOLINE
MACK: THE PARAMETER AIZ (US2010) OR P1I15 (OBD2013) DEFAULT SETTING MAY NEED TO BE ADJUSTED IN ORDER TO IMPROVE THE INSTRUMENT CLUSTER FUEL. *JS
PI-0831
Jan 1, 2014
118000 ELECTRICAL SYSTEM:SOFTWARE
MACK: DIAGNOSTIC TROUBLE CODES (DTCS), P1086, P0420, P205B, P202, LOW TEMPERATURE, WILL BE RESOLVED WITH SOFTWARE UPDATE ENHANCEMENTS FOR ENGINE CONTROL MODULE (ECM) AND AFTERTREATMENT CONTROL MODULE (ACM). MODEL 2013 CHU, CXU, GU, LEU, MR
PI-0840
Jan 1, 2014
060000 ENGINE (PWS)
MACK: SOME VEHICLES REQUIRE SOFTWARE UPDATES FOR THE ENGINE CONTROL MODULE (ECM). THE UPDATES CONCERN THE PISTON COOLING JET (PCJ) DIAGNOSTIC FAULT LOGIC AND REGENERATION IN COLD CLIMATES. MODELS INCLUDE OBD2013, MP7, MP8, MP10,CHU, CXU, GU
FSB 413-003
Dec 17, 2013
100000 POWER TRAIN
THE AIR OPERATED CLUTCH ASSIST SYSTEM WAS DESIGNED TO REDUCE CLUTCH PEDAL EFFORT BY APPROXIMATELY 20%, ALONG WITH REDUCING THE CLUTCH PEDAL TRAVEL BY 2" (50.8 MM).
FSB-271-002
Dec 1, 2013
118000 ELECTRICAL SYSTEM:SOFTWARE
MACK: DUE TO A SOFTWARE BUG, MULTIPLE COUNTS OF INACTIVE FAULTS WERE FOUND, AFFECTING THE ACCELERATOR PEDAL (STANDARD OR KICKDOWN PEDAL). MODELS 2013 CHU, CXU, GU, LEU, MRU, TD, CMH, CMM. *PE
FSB-413-003
Dec 1, 2013
101000 POWER TRAIN:CLUTCH ASSEMBLY
MACK: ON SOME TRUCKS, MORE LEG AND KNEE ROOM WAS PROVIDED FOR OPERATOR COMFORT DUE TO AIR OPERATED CLUTCH ASSIST SYSTEM DESIGNED TO REDUCE CLUTCH PEDAL EFFORT BY 20% AND CLUTCH PEDAL TRAVEL BY 2' (50.8MM). MODEL CHU, CTP, CXP, CXU, GU. N
PI 0834
Nov 19, 2013
060000 ENGINE (PWS)
DUE TO A DURABILITY ISSUE WITH THE TURBOCHARGER OUTLET FLEX PIPE, IT HAS BEEN DECIDED TO REPLACE THE FLEX PIPE ON ALL MACK LEU AND MRU VEHICLES WITH A MP7 OR MP8 ENGINE BUILT BETWEEN APRIL 1, 2013 AND OCTOBER 13, 2013.
FSB 512-002
Nov 12, 2013
040000 SERVICE BRAKES, AIR
IT HAS BEEN REPORTED IN THE FIELD THAT THE BENDIX AIR DISC BRAKE MAY EXHIBIT A THERMAL OVERLOAD CONDITION.
FSB 373-019
Nov 8, 2013
100000 POWER TRAIN
ON SOME MACK MODELS BUILT WITH AN ALLISON TRANSMISSION, BETWEEN MAY 16, 2011 AND AUGUST 9, 2013, MAY EXPERIENCE MULTIPLE OPEN CIRCUITS IN THE 31 WAY TRANSMISSION CONNECTOR. THIS IS DUE TO A SUPPLIER MANUFACTURING ISSUE WITH THE CONNECTOR.
FSB 373-018
Nov 7, 2013
100000 POWER TRAIN
MACK MODELS BUILT WITH ALLISON TRANSMISSION ARE EXPERIENCING MULTIPLE OPEN CIRCUITS IN THE 31 WAY CONNECTOR. *06/02/2014 *LJ
FSB-221-011
Nov 1, 2013
060000 ENGINE (PWS)
MACK: ON CERTAIN TRUCKS, DIAGNOSTIC TROUBLE CODES (DTCS) PID 100 FM1, SPN 100 FMI 1 OR P252400, ARE LOGGED DURING LONG HARD PULL CONDITIONS, WITH OR WITHOUT ENGINE SHUT DOWN LAMP. MODEL 2007-2013 TITAN. *PE
FSB-373-018
Nov 1, 2013
102000 POWER TRAIN:MANUAL TRANSMISSION
MACK TRUCK: SOME TRUCKS MAY EXPERIENCE, ON 31 WAY TRANSMISSION CONNECTOR, MULTIPLE OPEN CIRCUITS, DUE TO A MANUFACTURING SUPPLIER ISSUE WITH CONNECTOR. MODEL 2011-2013 LEU, MRU. *PE
FSB-373-019
Nov 1, 2013
103000 POWER TRAIN:AUTOMATIC TRANSMISSION
MACK: DUE TO SUPPLIER MANUFACTURING ISSUE WITH CONNECTOR, SOME TRUCKS MAY EXPERIENCE MULTIPLE OPEN CIRCUITS IN 31 WAY TRANSMISSION CONNECTOR AND WOULD TO BE INSPECTED AND IF NEEDED, REPAIRED AND REPLACED. MODEL 2011-2013 CHU, CXU, GU, TD.