Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 2,701 bulletins for MACK
FSB-844-003
Oct 1, 2011
132000 VISIBILITY:GLASS, SIDE/REAR
MACK TRUCK: PASSENGER DOOR PEEP WINDOW IS LOOSENING FROM DOOR. THIS MAY RESULT IN THE WINDOW BUTYL TAPE SOFTENING BECAUSE OF HIGH TEMPERATURES. *PE
PI-0710
Oct 1, 2011
061000 ENGINE AND ENGINE COOLING:ENGINE
MACK TRUCK: A CONICAL SEAT ARRANGEMENT AND MATCHING INJECTORS WAS DEVELOPED AS PRODUCT IMPROVEMENT FOR NEW STAINLESS STEEL SLEEVE DUE TO ENGINES EXPERIENCING FAILURES OF PREVIOUS COPPER INJECTOR SLEEVES. MODELS MP7, MP8, MP10. NO MODEL
PI-0745
Oct 1, 2011
062300 ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
MACK TRUCK: ALL AFTERTREATMENT DIESEL EXHAUST FLUID (DEF) COOLANT HOSES ON LEU AND MRU TRUCKS HAVE AN AVAILABLE CAMPAIGN FOR REPLACEMENT. NO MODEL YEARS LISTED. *PE
PI-0761
Oct 1, 2011
061000 ENGINE AND ENGINE COOLING:ENGINE
MACK TRUCKS: TO PREVENT GROUNDING OF POSITIVE TERMINAL OF AN ALTERNATOR ON CERTAIN TRUCK (CXU) ENGINES, THE CLUTCH CABLE AT THE ALTERNATOR (DENSO) HAS BEEN REROUTED. *PE
SB-293-11
Oct 1, 2011
061000 ENGINE AND ENGINE COOLING:ENGINE
MACK TRUCK: BULLETIN PROVIDING PROCEDURE INFORMATION ON EGR COOLER BEING PRESSURE TESTED ON THE ENGINE AND ALSO REMOVED FROM THE ENGINE. NO MODEL OR MODEL YEARS LISTED. *PE
EC0013
Sep 1, 2011
063130 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)
MACK TRUCKS: EMISSIONS RECALL. THE ENGINE EXHAUST GAS RECIRCULATION (EGR) COOLER USED ON CERTAIN MODEL MP8 (MODEL YEAR 2007) ENGINES IS EXPERIENCING LEAKAGE BETWEEN THE COOLANT AND EXHAUST GAS PATHS INSIDE THE COOLER. *JS
FSB-234-009
Sep 1, 2011
071120 FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:MOUNTING
MACK TRUCK: FUEL TANK MOUNTING. FUEL TANK STRAPS OVER TIME MAY LOSE TORQUE AND ALLOW THE FUEL TANK TO ROTATE. WHEN THIS OCCURS, THE FILLER NECK CAN BECOME INACCESSIBLE AND DIFFICULT TO FILL THE TANK WITH FUEL. MODELS CHU, CXU, GU, TD.
FSB-437-001
Sep 1, 2011
103700 POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER
MACK TRUCK: THE EASY INSTALLATION OF ALLISON TRANSMISSION AND PREVENTING BINDING OF TORQUE CONVERTER PILOT DURING THERMAL EXPANSION CYCLE OF NORMAL OPERATION BY USING HIGH TEMPERATURE MOLYBDENUM DISULFIDE GREASE. *PE
FSB-465-002
Sep 1, 2011
105500 POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
MACK: THERE ARE NEW BULL GEAR MOUNTING FASTENER TORQUE PROCEDURES. *RM UPDATED 2/21/12. *PE
FSB-491-029
Sep 1, 2011
980000 UNKNOWN OR OTHER
MACK TRUCKS: THERE ARE CRACKS IN A STEEL OIL TUBE THAT CAN LEAD TO LEAKING. *RM UPDATED 2/21/12. *PE
FSB-712-003
Sep 1, 2011
021242 SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:HANGER,BRACKET
MACK TRUCK: CRACKS MAY DEVELOP IN LOWER FLANGE ON SOME MODEL CHASSIS, LOCATED ON RIGHT HAND FRAME RAIL THAT IS BEHIND FRONT SPRING FRONT HANGER BRACKET. MODEL LEU. *PE
PI-0752
Sep 1, 2011
015100 STEERING:HYDRAULIC POWER ASSIST:PUMP
MACK TRUCK: ON CERTAIN TRUCKS, THERE IS A LOSS OF SPEED (LOW) ASSIST. THE PUMP FLOW AND PRESSURE MUST BE TESTED BEFORE REPLACING TANDEM PUMP ASSEMBLY. *PE
PI-0760
Sep 1, 2011
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
MACK TRUCK: ON CERTAIN VEHICLES, THE AFTERTREATMENT DIESEL EXHAUST FLUID (DEF) SOLENOID VALVE WAS INCORRECTLY MOUNTED BACKWARDS. THIS CAUSES COOLANT TO LIFT VALVE SEAT AND FLOW CONTINUOUSLY, OVERHEATING AND POSSIBLY ILLUMINATING INDICATO
SP-256-001
Aug 1, 2011
060000 ENGINE AND ENGINE COOLING
MACK: AIR CLEANER HOUSING. THERE WAS A PRESSURE PULSE THROUGH THE PREVIOUS AIR FILTER WHICH MAY ALLOW DUST OR DIRT TO COME THROUGH THE FILTER. *RM
SP-365-001
Aug 1, 2011
101100 POWER TRAIN:CLUTCH ASSEMBLY:PEDAL/HAND LEVER(MOTORCYCLE)
MACK: CLUTCH OPERATION ERROR PREVENTS STARTER ENGAGEMENT UNLESS PEDAL IS FULLY DEPRESSED. *RM
SP-386-013
Aug 1, 2011
072000 FUEL SYSTEM, GASOLINE:DELIVERY
MACK: THE FUEL LEVEL SENDER IS INCORRECTLY INSTALLED AND CAN CAUSE INCORRECT FUEL LEVEL READINGS IN THE INSTRUMENT PANEL. *RM UPDATED 9/27/2011. *PE
FSB-293-011
Jul 1, 2011
062300 ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
MACK TRUCKS: THERE ARE NEW EGR OUTLET HOSE CLAMPS. *RM
SP-652-006
Jul 1, 2011
980000 UNKNOWN OR OTHER
MACK TRUCKS: TORQUE ROD TO MOUNTING BRACKET BOLTS WERE INSTALLED INCORRECTLY. THE BOLTS WERE INSTALLED IN AN OPPOSING MANNER. *RM
FSB-258-026
Jun 1, 2011
063140 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR
MACK TRUCKS: THE LOCATION OF THE NITROUS OXYDE SENSOR AND PIPING AROUND IT HAS BEEN CHANGED TO PROTECT IT FROM MOISTURE DAMAGE IF WATER ENTERS THE EXHAUST. *RM
FSB-711-004
Jun 1, 2011
161000 STRUCTURE:FRAME AND MEMBERS
VOLVO: CURRENT CROSSMEMBER HAS BEEN EXPERIENCING CRACKS AT THE RIVET HOLES. *RM
FSB-825-010
Jun 1, 2011
161100 STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS
MACK TRUCKS: THERE MAY BE AN INTERFERENCE BETWEEN THE LEFT AND RIGHT HAND FRONT SPLASH SHIELD AND THE BRAKE HOSE. *RM
SB-263-046
Jun 1, 2011
062200 ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
MACK: FAN RINGS ARE CRACKING DURING EXTREME SERVICE. *RM UPDATED 9/7/11. *PE
SP-263-047
Jun 1, 2011
062200 ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
MACK TRUCKS: THERE MAY BE INCORRECT TORQUE SPECIFICATIONS ON THE FAN HUB ASSEMBLY. *RM
SP-652-004
Jun 1, 2011
020000 SUSPENSION
MACK TRUCK: TORQUE ROD RELOCATION FOR HN SUSPENSION. CERTAIN MODEL TRUCKS WITH HN SUSPENSION HAVE BEEN FOUND TO MAKE CONTACT WITH THE TORQUE ROD AT THE CARRIER ASSEMBLY BRACKET. *PE UPDATED 9/9/11. *PE
FSB-258-027
May 1, 2011
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
MACK TRUCKS: THE FUEL LEVEL GUAGE MAY READ INCORRECTLY WHEN THE VEHICLE IS FILLED. *RM