Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 2,701 bulletins for MACK
PI 0863
Dec 22, 2015
020000 SUSPENSION
LEVEL CONTROL ROD BRACKET, REPLACEMENT. SOME MACK CHU, CXU TRUCKS BUILT FROM 06/16/2014 TO 09/30/2015, AND EQUIPPED WITH AIR RIDE SUSPENSION MAY HAVE THE LEVELING VALVE LEVEL CONTROL ROD TOGGLE OVER INADVERTENTLY. THE NEWLY DESIGNED LEVEL
PI 0865
Dec 22, 2015
060000 ENGINE (PWS)
ENGINE HARNESS RELOCATION. THE ENGINE HARNESS ON MACK MP7 US2015 ENGINES BUILT BETWEEN MARCH 1, 2015 AND AUGUST 31, 2015 MAY BE MAKING CONTACT WITH THE AIR COMPRESSOR HEAD AND RUBBING THROUGH. IT WILL BE NECESSARY TO RELOCATE THE HARNESS I
FSB 364-040
Dec 10, 2015
060000 ENGINE (PWS)
WAIT TO START INDICATOR LAMP, REPLACEMENT. CERTAIN MACK TRUCKS EQUIPPED WITH A CUMMINS DIESEL ENGINE AND BUILT BETWEEN DECEMBER 3, 2012 AND SEPTEMBER 25, 2015 MAY DISPLAY DIAGNOSTIC TROUBLE CODE (DTC) SPN 3494 ?WAIT TO START? IN THE ENGINE
FSB 257 003
Oct 30, 2015
063110 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)
Crankcase Ventilation Tube Heater. For customer operating vehicles in extreme cold temperatures, Mack Trucks has developed a device that will prevent the crankcase ventilation (CCV) tube from building up ice and freezing over which could l
FSB 257-003
Oct 30, 2015
062000 ENGINE AND ENGINE COOLING:COOLING SYSTEM
CRANKCASE VENTILATION TUBE HEATER. FOR CUSTOMER OPERATING VEHICLES IN EXTREME COLD TEMPERATURES, MACK TRUCKS HAS DEVELOPED A DEVICE THAT WILL PREVENT THE CRANKCASE VENTILATION (CCV) TUBE FROM BUILDING UP ICE AND FREEZING OVER WHICH COULD L
FSB 257-003A
Oct 30, 2015
063110 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)
CRANKCASE VENTILATION TUBE HEATER. FOR CUSTOMER OPERATING VEHICLES IN EXTREME COLD TEMPERATURES, MACK TRUCKS HAS DEVELOPED A DEVICE THAT WILL PREVENT THE CRANKCASE VENTILATION (CCV) TUBE FROM BUILDING UP ICE AND FREEZING OVER WHICH COULD L
FSB 722 004
Oct 30, 2015
020000 SUSPENSION
Twin Y Suspension, Trailing Blade, Replacement. Some MACK CHU and CXU trucks built 06/13/2013 through 09/25/2015 and equipped with Twin-Y suspension may require replacement of the Twin-Y trailing blades with a more robust design. The new
FSB 722 005
Oct 30, 2015
020000 SUSPENSION
Twin Y Suspension, Trailing Blade, Replacement. Some MACK CHU, CXU, CSM, and CMM trucks built 06/13/2013 through 09/25/2015 and equipped with Twin-Y suspension may require replacement of the Twin-Y trailing blades with a more robust design
FSB 722 006
Oct 30, 2015
020000 SUSPENSION
Twin-Y Suspension, U-Bolt, Replacement. For MACK service centers or dealers who are not equipped with HUCK bolt tools, use U-Bolt (part number 21759985) and Nut (part number 947971) when replacing the current Twin-Y Suspension U-Bolt.
FSB 722-004A
Oct 30, 2015
020000 SUSPENSION
TWIN Y SUSPENSION, TRAILING BLADE, REPLACEMENT. SOME MACK CHU AND CXU TRUCKS BUILT 06/13/2013 THROUGH 09/25/2015 AND EQUIPPED WITH TWIN-Y SUSPENSION MAY REQUIRE REPLACEMENT OF THE TWIN-Y TRAILING BLADES WITH A MORE ROBUST DESIGN. THE NEW
FSB 722-005A
Oct 30, 2015
020000 SUSPENSION
TWIN Y SUSPENSION, TRAILING BLADE, REPLACEMENT. SOME MACK CHU, CXU, CSM, AND CMM TRUCKS BUILT 06/13/2013 THROUGH 09/25/2015 AND EQUIPPED WITH TWIN-Y SUSPENSION MAY REQUIRE REPLACEMENT OF THE TWIN-Y TRAILING BLADES WITH A MORE ROBUST DESIGN
FSB 722-006A
Oct 30, 2015
020000 SUSPENSION
TWIN-Y SUSPENSION, U-BOLT, REPLACEMENT. FOR MACK SERVICE CENTERS OR DEALERS WHO ARE NOT EQUIPPED WITH HUCK BOLT TOOLS, USE U-BOLT (PART NUMBER 21759985) AND NUT (PART NUMBER 947971) WHEN REPLACING THE CURRENT TWIN-Y SUSPENSION U-BOLT.
PI 0859A1
Oct 14, 2015
110000 ELECTRICAL SYSTEM
FRONT RADAR, FAILURE. CERTAIN MACK CHU, CXU, AND GU TRUCKS BUILT BETWEEN 11/11/2013 AND 01/14/2015, EQUIPPED WITH FRONT RADAR MAY EXPERIENCE LOSS OF FRONT OBJECT DETECTION OR ERRATIC OPERATION OF CRUISE CONTROL FUNCTIONS. THE TERMINAL SEAL
PI 0860
Oct 8, 2015
100000 POWER TRAIN
TRANSMISSION ECU, REPLACEMENT. SOME MACK VEHICLES EQUIPPED WITH MDRIVE TRANSMISSION VERSION D BUILT BETWEEN 2/2/2015 AND 3/19/2015 REQUIRE A TRANSMISSION ECU REPLACEMENT. APPROXIMATELY 34 VEHICLES ARE INVOLVED IN THIS CAMPAIGN.
PI 0860A
Oct 8, 2015
100000 POWER TRAIN
TRANSMISSION ECU, REPLACEMENT. SOME MACK VEHICLES EQUIPPED WITH MDRIVE TRANSMISSION VERSION D BUILT BETWEEN 2/2/2015 AND 3/19/2015 REQUIRE A TRANSMISSION ECU REPLACEMENT. APPROXIMATELY 34 VEHICLES ARE INVOLVED IN THIS CAMPAIGN.
PI 0862
Oct 8, 2015
020000 SUSPENSION
V-STAY ROD COVER, REPLACEMENT. SOME MACK GU, MRU, LEU TRUCKS BUILT FROM 03/19/2012 TO 08/30/2015 AND EQUIPPED WITH MRIDE SUSPENSIONS MAY INADVERTENTLY LOSE THE V-STAY ROD COVER (PART NUMBER 21896762) FROM THE V-STAY ROD.
PI 0862A
Oct 8, 2015
020000 SUSPENSION
V-STAY ROD COVER, REPLACEMENT. SOME MACK GU, MRU, LEU TRUCKS BUILT FROM 03/19/2012 TO 08/30/2015 AND EQUIPPED WITH MRIDE SUSPENSIONS MAY INADVERTENTLY LOSE THE V-STAY ROD COVER (PART NUMBER 21896762) FROM THE V-STAY ROD.
257-003
Oct 1, 2015
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
P10859
Oct 1, 2015
110000 ELECTRICAL SYSTEM
Certain MACK CHU, CXU, and GU trucks built between 11/11/2013 and 01/14/2015, equipped with front radar may experience loss of front object detection or erratic operation of cruise control functions. The terminal seals of the harness is a