2012 Mack Mru TSBs
207 Technical Service Bulletins across 14 categories
Categories
Engine
61 bulletinsCBR - Mack Chassis - Engine Brake Only Works With The Brake Pedal, No Function During Cruise.
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US07 And Newer Emissions, Model Year 2008 And Newer.
CBR: 11L, 13L, And 16L Engine Oil Analysis Specifications - US10 And Newer Emissions
CBR: Vehicles built with an 11 liter engine may experience a complaint of excessive fuel in the oil.
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It is possible that the source of the fuel is the rear fuel galley plug in the cylinder head. A new and improved fuel galley plug has been developed to resolve this issue.
Barksdale Leveling Valve, Leak Test
CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
2008 Document reformatted to be published as a TSB in Impact.
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Crack in cab at engine tunnel.
2008 Document reformated to be published as a TSB in Impact.
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Field repair for the treadle valve.
2009 Document reformatted to be published as a TSB in Impact.
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Turbo Actuator Connector Repair.
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
US10 Emission Engines - Diagnostic Trouble Code ( DTC ) SPN 1231 FMI 9 Troubleshooting.
Vehicles Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F ) - Transmission Oil Leakage From...
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Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer.
Emcon (Spark Assist) Engine Aftertreatment System Troubleshooting Check Sheet - US07 Emissions
Low Oil Pressure Diagnostic Process For 11 Liter Engines
Manual Compression Test Adapter For Engines With Stainless Steel Injector Sleeves (Conical Tip Injectors) - US07 And...
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Newer Emissions, Model Year 2008 And Newer
Mack Chassis - Diagnostic Trouble Codes ( DTC's ) - P020113, P020213, P020313, P020413, P020513, P020613, Cylinders 1...
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Through 6 Injector A Open Circuit
Mack Chassis - Equipped With An Automated Manual Transmission Model D or F (mDrive, AMT-D, AMT-F) - Transmission Oil...
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Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer
Engine Oil Analysis Specifications - US10 And Newer Emissions
Diagnostic Trouble Codes (DTC) For The Engine Pre-Heat Relay: Supplementary Instructions
Mack Chassis - Emcon (Spark Assist) Engine Aftertreatment System Troubleshooting Check Sheet - US07 Emissions
Assembled Camshaft - Injector Lobe Rotation Inspection For Possible Spun Camshaft Lobe; Diagnostic Trouble Codes (DTC)...
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P0257-00, P2A17-00, Or P2A1F-00, Possible Lack Of Power - US17+OBD16 and Newer Emissions
Mack Chassis - Discharge Recirculation Valve (DRV) - FSB 258-029 , Engine Turbocharger Compressor Bypass Valve Deletion...
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Kit, Installation
US07 / US10 D13 Turbocharger Gasket - Low Power, Poor Regen Performance
Mack Chassis - SNM16-006 Telematics Gateway ( TGW ) Goes Offline Due To Vin Mismatch When Test Engine ECU Is Installed
Mack Chassis - Equipped With A Cummins 9 Liter Engine - Serpentine Belt Excessively Worn Or Damaged; Fan Belt Shredding...
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Or Fraying Repeatedly
Diagnostic / Troubleshooting Procedures For EGR System Components; Diagnostic Trouble Codes (DTC) P0401-00, P0402-00,...
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P04DD-00, P1121-00, P1121-98 Or SPN 2659 FMI 16, SPN 2659 FMI 18, SPN 412 FMI 0, SPN 412 FMI 15 - US10, US10+OBD13, US14+OBD*, US17+OBD* With A Variable Geometry Turbocharger (VGT)
Mack Chassis - Crankcase Ventilation ( CCV ) Oil Leaks - FSB 257 - 004, FSB 257 - 006 - US14 And US15 Emissions
Mack Chassis - Telematics Gateway ( TGW, MID 142 ) Losing Communication With The Instrument Cluster ( IC ) - Counts Of...
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Fault Code (FC) MID 140 PSID 239 FMI 12 Data Link, MID 142 Faulty Device or Component Logging, Possibly Following Engine Start; TGW Possibly Missing From Product Information In Premium Tech Tool ( PTT ) - OBD13 Through OBD16 Emissions With TGW1 Or TGW2
Fuel Injector Offset Learning Diagnostic Trouble Codes ( DTC ) / Fault Codes Logged In Engine Control Module ( EMS );...
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Possible Rough / Uneven Idle - OBD15 Chassis
During extended periods of idling, engine speed may increase for a short time without any external command to do so.
SOME MACK VEHICLES BUILT BETWEEN 2004 AND OCTOBER 2013 EXPERIENCE AN OIL LEVEL SENSOR FAILURE THAT LEADS TO OIL...
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CONTAMINATION INTO THE ENGINE WIRE HARNESS.
DURING LONG HARD PULL CONDITIONS, DIAGNOSTIC TROUBLE CODES (DTC) SPN 100 FMI 1 OR P052400 CAN LOG ON CERTAIN MACK CXU,...
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GU, LEU AND MRU VEHICLES BUILT BETWEEN JANUARY 1, 2010 AND CURRENT PRODUCTION WITH MP7 EPA2010 AND OBD2013 ENGINES.
ON SOME MACK ISL-G MODELS BUILT, BETWEEN JANUARY 1, 2009 AND JANUARY 21, 2013, MAY EXPERIENCE A FAULT CODE, MID140 PSID...
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200 FMI 9, WHEN THE ENGINE SOFTWARE IS UPDATED.
SOME MACK VEHICLES BUILT BETWEEN 2004 AND OCTOBER 2013 EXPERIENCE AN OIL LEVEL SENSOR FAILURE THAT LEADS TO OIL...
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CONTAMINATION INTO THE ENGINE WIRE HARNESS.
DIAGNOSTIC TROUBLE CODE (DTC) SPN 4094 FMI 18 AND SPN 5246 FMI 0 CAN LOG IN CERTAIN CHASSIS APPLICATIONS THAT LOAD THE...
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ENGINE DURING IDLE CONDITIONS ON LEU AND MRU (MP7 EPA2010) TRUCKS BUILT BETWEEN 01/01/2010 AND 12/16/2012.
SOME MACK VEHICLES WITH MP ENGINES BUILT BETWEEN JANUARY 2004 AND JANUARY 2013 MAY EXPERIENCE A MAIN OIL GALLERY...
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PRESSURE SENSOR OR PISTON COOLING JET PRESSURE SENSOR FAILURE THAT LEADS TO OIL CONTAMINATION INTO THE ENGINE WIRE HARNESS.
COOLANT LEVEL SENSOR, REPLACEMENT.
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THE COOLANT LEVEL SENSOR (PART NUMBER 21257608) ON SOME MACK CABOVER TRUCKS BUILT BETWEEN 10/04/2008 AND 02/20/2015 MAY FAIL INTERNALLY. FAILURE OF THE SENSOR CAN CAUSE THE MALFUNCTION INDICATOR LIGHT (MIL) TO ILLUMINATE AND CAN CAUSE AN UNPLANNED STOP IN CASES WHERE THE ENGINE PARAMETER "ENGINE SHUTDOWN WITH LOW COOLANT" IS ENABLED.
DIAGNOSTIC TROUBLE CODES (DTCS), LOW OIL PRESSURE.
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DURING LONG HARD PULL CONDITIONS, DIAGNOSTIC TROUBLE CODES (DTC) SPN 100 FMI 1 OR P052400 CAN LOG, OR ENGINE SHUT DOWN MAY OCCUR ON CERTAIN HIGH MILEAGE MACK CXU, GU, LEU AND MRU VEHICLES BUILT BETWEEN JANUARY 1, 2010 AND APRIL 2, 2015 WITH MP7 ENGINES. THESE DTC MAY OCCUR DURING THE CONDITIONS DESCRIBED IN THIS BULLETIN, WITH OR WITHOUT AN ENGINE SHUT DOWN LAMP.
SOME MRU AND LEU TRUCKS BUILT BETWEEN 06/28/2010 AND 02/11/2013 WITH THE CUMMINS ISLG ENGINE MAY EXPERIENCE A FAILURE OF...
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THE BRAKE COMPRESSOR AIR INLET HOSE WHERE IT ATTACHES TO THE COMPRESSOR.
OIL PAN SEALING RING, REPLACEMENT.
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SOME MACK VEHICLES EQUIPPED WITH MP8 ENGINES BUILT SINCE JANUARY 2010 REPORT OIL LEAKING AT THE DRAIN PLUG INSERT IN THE 13L PLASTIC OIL PAN (PART NUMBER 21368390) DUE TO O-RING MATERIAL DEGRADATION. IF OIL PAN IS SHOWING EVIDENCE OF LEAKAGE, REPLACE ALL O-RINGS AND SEALING RINGS.
ON SOME MACK ISL-G MODELS BUILT, BETWEEN JANUARY 1, 2009 AND JANUARY 21, 2013, MAY EXPERIENCE A FAULT CODE, MID140 PSID...
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200 FMI 9, WHEN THE ENGINE SOFTWARE IS UPDATED.
MACK TRUCK: MUFFLER INLET PIPE WILL FALL OUT, AND A NEW MUFFLER INLET PIPE, TURBORCHARGER OUTLET PIPE, LENGTHENED...
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EXHAUST FLEX PIPE WAS DESIGNED TO ADDRESS THIS CONDITION AND WORK TOGETHER TO REDUCE RIGIDITY. *PE
MACK TRUCK: DUE TO OIL CONTAMINATION INTO ENGINE WIRE HARNESS, MAIN OIL GALLERY PRESSURE SENSOR OR PISTON COOLING JET...
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PRESSURE SENSOR HAS FAILED AND NEW ANTI WICKING JUMPER HARNESS IS AVAILABLE TO STOP OIL FROM WICKING BACK AND CAUSING DAMAGE TO NEW SENSOR. MODEL CHU, CXU, GU, LEU, MRU, TD. *PE
MACK: ON CERTAIN TRUCKS, THERE IS A SOFTWARE UPDATE FOR THE ENGINE CONTROL MODULE (ECM).
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MODEL LEU, MRU. NO YEARS LISTED. *PE
MACK: SOME MACK MRU MODELS BUILT BETWEEN 10/12/12 AND 4/19/13 MAY HAVE UNSEALED SPLICE EXPOSED TO THE OUTSIDE ENVIRONMENT.
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IT IS POSSIBLE FOR THIS TO CAUSE CORROSION TO THE ENGINE CONTROL EMS SUPPLY, CIRCUITS F38A, F38A1, F38A2 AND F38A3 . *JS
MACK: ON SOME TRUCKS, OIL CONTAMINATION INTO ENGINE WIRE HARNESS, MAY BE FROM OIL LEVEL SENSOR FAILURE AND AN ANTI...
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WICKING PIGTAIL SPLICE KIT IS AVAILABLE. MODEL CHU, CXU, GU, LEU, MRU, TD. NO YEARS LISTED. *PE
MACK: INCORRECT HARDWARE ON FRONT ENGINE MOUNT.
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BOLTS ARE THE INCORRECT LENGTH AND OR GRADE FOR THE ENGINE. *KB
MACK TRUCKS: HOSE, ENGINE OIL FILL TUBE.
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ENGINES BUILT BEFORE FEBRUARY 11, 2013 MAY EXHIBIT MINOR OIL SEEPAGE FROM THE ENGINE OIL FILLER TUBE HOSE OR DISPLAY STRESS CRACKS IN THE HOSE. *JS UPDATED 7/3/13. *PE
MACK TRUCK: INFORMATION PROVIDED REGARDING MODIFICATION OF EGR VALVE ON ENGINES AND REMOVAL OF POPPET SHAFT END CAP O RINGS.
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MODELS CHU, CXU, GU, LEU, MRU. NO MODEL YEARS LISTED. *PE
MACK: RELOCATING VGT ACTUATOR CONNECTOR AND MOUNTING ARRANGEMENT TO ELIMINATE DIAGNOSTIC TROUBLE CODES (DTCS) AND...
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SIGNAL MISSING FROM ENGINE VARIABLE GEOMETRY TURBOCHARGER ACTUATOR (ENGINE VGT ACTUATOR) CAUSING FRETTING OF CONNECTOR PINS. *PE
MACK TRUCKS: EGR DIFFERENTIAL PRESSURE SENSOR PIN FRETTING.
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SEVERE FRETTING DAMAGE OF THE ENGINE EXHAUST GAS RECIRCULATION DIFFERENTIAL PRESSURE SENSOR'S (EGR DIFFERENTIAL PRESSURE SENSOR) CONNECTOR MAY CAUSE AN UNRELIABLE SIGNAL TO THE SENSOR ON MACK MP8 EPA2007 ENGINES. *JS
MACK: SOFTWARE UPDATE FOR ENGINE CONTROL MODULE (ECM).
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*PE
MACK: DUE TO FRETTING OF CONNECTOR PINS IN ENGINE VGT ACTUATOR CONNECTOR, A NEW MOUNTING ARRANGEMENT HAS BEEN...
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DEVELOPED AND RELOCATION OF ENGINE VGT ACTUATOR CONNECTOR. MODELS CHU, CXU, GU, MRU, MP8. *PE UPDATED 7/31/12. *PE
MACK: WHERE THE TRANSMISSION AND/OR ENGINE SUPPORTS ARE ATTACHED, UNDER SEVERE OPERATING CONDITIONS, CRACKS HAVE BEEN...
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LOCATED AND THE MOUNTING BRACKETS , WITH NEW FRAMES, SHOULD BE REPLACED. MODELS LEU, MRU, MP7. MODEL YEARS 2008-2012. *PE
MACK: AN UNRELIABLE SIGNAL TO ENGINE VGT ACTUATOR FROM ENGINE VARIABLE GEOMETRY TURBOCHARGER (VGT) ACTUATOR HARNESS...
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THAT HAS SEVERE FRETTING DAMAGE, THE CONNECTOR PIN AND SOCKET CONTACTS SHOULD BE REPLACED. *PE UPDATED 9/17/12. *PE
MACK TRUCKS: SEVERE FRETTING DAMAGE OF THE ENGINE VARIABLE GEOMETRY TURBOCHARGER ACTUATOR (ENGINE VGT ACTUATOR) HARNESS...
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AND TURBINE SHAFT SPEED SENSOR (TSS) CONNECTORS MAY CAUSE AN UNRELIABLE SIGNAL TO THE ENGINE VGT ACTUATOR. ALSO INCLUDED MODEL CMM AND CMH. NO MODEL YEARS GIVEN. *JS
MACK: COMBUSTION AIR VALVE AND PIPING ARRANGEMENT.
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ON THE LEU AND MRU MODEL VEHICLES IT HAS BEEN DETERMINED THAT THERE WAS INSUFFICIENT SUPPORT OF THE COMBUSTION AIR VALVE AND PIPING. *JS
MACK TRUCK: THE LATEST SOFTWARE UPGRADE TO BE RECEIVED BY CERTAIN MACK MP7 ENGINE CONTROL MODULES (ECM) AND AFTERTREATMENT CONTROL MODULES (ACM).
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*PE
MACK TRUCKS: THERE ARE ENGINE ECM SOFTWARE UPDATES.
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*RM
MACK TRUCKS: IF THERE IS A FAILED OUTER VALVE SPRING THERE IS A REPLACEMENT PROCEDURE.
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*RM
MACK: THERE ARE ENGINE DIAGNOSTIC TROUBLE CODES AND THERE MAY NEED TO BE A SOFTWARE UPDATE.
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*RM
MACK: ENGINE ECU REPROGRAMMING.
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THE MACK MP7 AND MP8 WITH MULTIPLE ENGINE ENHANCEMENTS WILL HAVE NEW SOFTWARE. THE EGR MASS FLOW, AND AFTERTREATMENT DOSER AND NOX SENSOR ARE INCLUDED IN THE ENHANCEMENT. *PE
Fuel System
43 bulletinsIf oil dilution is suspected refer to the applicable CBR solution below: CBR-659Mack Chassis - Oil Diluted With Fuel;...
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Fuel In Oil, Diagnostic Information - All Emissions, All Model Years
Mack DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions
2008 Document reformatted to be published as a TSB in Impact.
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Water entering the DPF.
Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions.
DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions.
Premium Tech Tool (PTT) - Message For Data Mismatch, Product Configuration Mismatch; Instruction To Run An Accessory Kit...
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Displayed When Attempting To Run Diagnostics For Diagnostic Trouble Codes (DTC) Or Programming - US10+OBD13 And Newer Emissions,
DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions
Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions
USE FOR NEW VEHICLES (US21+OBD22 Emissions) - Intermittent Diagnostic Trouble Codes U02A3, U029D, U029E
Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After DEF Pump Failure Or System Contamination
Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide - US10+OBD13 And Newer Emissions
Regen Fails to Start/Initiate Or Starts And Immediately Stops - US10 And US10+OBD13 Emissions
System Date And Time, Information; Diagnostic Tool ( J-Pro, Premium Tech Tool ( PTT ) ) Displays Incorrect Timestamp For...
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Diagnostic Trouble Code ( DTC ) / Fault Code Occurrences, Possible Data Link Codes Present - US07 And Newer Emissions, Common Mod
Diagnostic Trouble Code (DTC) P04DB - Crankcase Ventilation Disconnected; US10+OBD13 To US14+OBD16 Emissions
Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide - US10+OBD13 And Newer Emissions
Volvo Chassis - Diesel Exhaust Fluid ( DEF ) Contamination In Fuel System, Inspection And Repair - US10 to US14 (...
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Non-Common Rail Fuel System )
Volvo Chassis - Diagnostic Trouble Code (DTC) SA 0 FMI 0 or SPN 0 FMI 0 Present On Fault Code Readout - US10 And Newer...
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Emissions, Model Year 2011 And Newer
Mack Chassis - Where To Find The Body Builder Portal - Body Builder Manual ( BBM ) Information - US04 And Newer...
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Emissions, Model Year 2008 And Newer
Diesel Fuel Information - Acceptable Biodiesel, Fuel Blend For Summer And Winter - US07 And Newer Emissions, Model Year...
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2008 And Newer
Mack Chassis - Disabling The Driver ID; Removing the Driver ID Prompt - US07 To US14+OBD16 Emissions, Model Years 2008...
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To 2017
Mack Chassis - TerraPro (MRU) And Low Entry (LEU) Models - Field Service Bulletin FSB 381-042, Warning Light Bar...
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Replacement and Software Conversion Kit - US07, US10, US14+OBD13 To US14+OBD16 Emissions, Model Years 2008 To 2017
Mack Chassis - LEU, MRU, LR - Frequent Requests For Regeneration, ( Hourly To Daily ); Possible High Soot Load Warnings...
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And Fault Codes Or Accelerated Soot Accumulation - Previously Tech Tip TT-020-2015 - US10 And Newer (Includes GHG17/US17, Common Rail) Emissions, Common Model Years 2011 And Newer
Mack Chassis - Diagnostic Trouble Codes ( DTC's ) P24A0 And P249F Lighting The Malfunction Indicator Lamp ( MIL ) -...
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US14+OBD15, US14+OBD16 (Common Model Years 2016 And 2017), US17+OBD16 And Newer ( Common Rail Fuel System, Model Year 2018)
Mack Chassis - Diagnostic Trouble Code ( DTC ) P0471 Illuminating The Malfunction Indicator Lamp (MIL) - US17+OBD16...
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(GHG17, Common Rail Fuel System) Chassis ONLY
Diagnostic Trouble Code ( DTC ) P0422 Lighting The Malfunction Indicator Light (MIL ) - OBD15 And US14+OBD16 (Non-Common...
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Rail Fuel System) Chassis
Diagnostic Trouble Code ( DTC ) P02FA Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel...
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System) Chassis ONLY
Diagnostic Trouble Code ( DTC ) P0471 Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel...
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System) Chassis ONLY
Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel...
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System) Chassis ONLY
Diagnostic Trouble Code ( DTC ) P009E - 73 - Fuel Pressure Relief Control Performance / Stuck Off - GHG17 ( US17 )...
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Chassis With Common Rail Fuel System, Updated to reflect GHG17 software release
Diagnostic Trouble Codes ( DTC ) P208E And P103B Logging With Possible Derate ( SCR Inducement ) - OBD15, US14+OBD16...
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Emissions And Newer Rewrote test procedure for better clarity.
Diagnostic Trouble Code ( DTC ) P009E - 73 - Fuel Pressure Relief Control Performance / Stuck Off - GHG17 ( US17 )...
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Chassis With Common Rail Fuel System.Changed repair instructions to reflect new procedures
Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After A Pump Failure or System Contamination.Removed...
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Tech Tip, Added correct operation ID
Expired - Refer to K93039325 - Mack Chassis - SNM16-032 DEF (Diesel Exhaust Fluid) Contamination In Diesel Fuel.New...
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solution released with improved information
Diagnostic Trouble Codes ( DTC ) P208E And P103B Logging With Possible Derate (SCR Inducement ) - US13 Emissions And...
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Newer
EGR MASS FLOW RATE LOW.
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THIS BULLETIN IS RELEASED TO ADDRESS HIGH COUNTS OF DIAGNOSTIC TROUBLE CODE (DTC) SPN 2659 FMI 18 OR P0401 ONLY DURING NORMAL TO HIGH LOAD DRIVING CONDITIONS ON VEHICLES ASSEMBLED BETWEEN JANUARY 2010 AND DECEMBER 2013. IT HAS BEEN DETERMINED THAT DEPOSITS IN THE EGR COOLER CAN BUILD UP AND CAUSE HIGH RESTRICTION OVER TIME. THIS HIGH RESTRICTION PREVENTS THE REQUIRED AMOUNT OF EGR GAS FROM FLOWING THROUGH THE EGR COOLER CREATING DTC SPN 2659 FMI 18 OR P0401 EGR MASS FLOW RATE LOW TO BE LOGGED INTERMITTENTLY. NORMALLY, THIS IS ONLY REPORTED ON HIGHER MILEAGE VEHICLES.
MACK: THE AFTERTREATMENT DIESEL EXHAUST FLUID (DEF) TANK FILLER NECK IS BEING REPLACED WITH AN IMPROVED FILLER NECK .
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*PE UPDATED 5/11/12. *PE
MACK TRUCK: THE CURRENT EXHAUST PIPE IS REPLACED BY A TWO PIECE FLEX PIPE AND DIESEL PARTICULATE FILTER (DPF) INLET PIPE.
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LEU, MRU. NO MODEL YEAR LISTED. *PE
MACK TRUCK: DUE TO THE LOW GROUND CLEARANCE, THE AFTERTREATMENT DIESEL EXHAUST FLUID (DEF) PUMP'S LOCATION MAY BECOME DAMAGED.
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*PE
MACK TRUCK: ALL AFTERTREATMENT DIESEL EXHAUST FLUID (DEF) COOLANT HOSES ON LEU AND MRU TRUCKS HAVE AN AVAILABLE CAMPAIGN FOR REPLACEMENT.
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NO MODEL YEARS LISTED. *PE
MACK TRUCK: REPLACEMENT OF AFTERTREATMENT DIESEL EXHAUST FLUID (DEF) COOLANT HOSE REPLACEMENT.
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*PE
MACK TRUCKS: CONNECTOR PLUGS FOR THE FUEL HEATER SOLENOID MAY BE MISSING.
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*RM
MACK TRUCKS: THE FUEL LEVEL SENDER IS MAKING IMPROPER CONTACT AND CAUSING THE FUEL GUAGE TO READ INCORRECTLY.
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*RM
MACK: DIESEL EXHAUST FLUID PUMP, REPAIR.
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ON CERTAIN TRUCKS, REPAIRS HAS BEEN AUTHORIZED ON DIESEL EXHAUST FLUID (DEF) PUMP. THE ONLY EXCEPTION FOR THIS PROCEDURE IS TO REPLACE HEATING BRACKET ON DEF PUMP WHICH IS NOT A SERVICEABLE COMPONENT. NO PARTS AVAILABLE FOR THE DEF PUMP. NO MODEL YEARS LISTED. *PE UPDATED 5/23/11. *PE
Other
35 bulletinsCBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
CBR - Mack Carrier Nut Adhesive Change.
CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded.
CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication...
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but failing to transmit GPS location data.
CBR: To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded.
CBR -Telematics Gateway (TGW) Connect Ability Issues
Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers.
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The new HD shaft went into production on January 23rd, 2023 for 2.54 - 3.50 axle ratios and April 1st, 2023 for 3.56 - 3.98 ratios. The new HD through shaft is an upgrade over the current standard shaft and can now be used as a replacement part instead of the standard shaft. The new HD shaft has a new design to increase strength, longevity and life over the standard shaft.
CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
Vibration Diagnostics
New Vehicle Safety Certification Requirements for Vehicles, U.S.
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and Canada
2008 Document reformatted to be published as a TSB in Impact.
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Grille bar, replacment.
2008 Document reformatted to be published as a TSB in Impact.
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Loose oil filter spud.
2008 Document reformatted to be published as a TSB in Impact.
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Cooling system connections.
2008 Document reformatted to be published as a TSB in Impact.
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Chassis lean.
2009 Document reformatted to be published as a TSB in Impact.
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Axle Carrier Pinion Angles
2009 Document reformated to be published as a TSB in Impact.
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Air Piping Diagrams.
Premium Tech Tool ( PTT ) Training Materials And Support Tools
DEF Pump Cycling periodically Hours After Key Off
Mack - PTO Pump Speed Calculator
(Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP)
Mack Chassis - Air System Schematics For Models - MRU, LEU And ( LR ) Using The Same Schematic As the LEU
Mack Chassis - FSB 563-008 Plugs, Pressure Protection Manifold - New Brass Plugs For Noregon Pressure Protection...
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Manifold (PPM)
Air Pressure Switch, Replacement
Diagnostic Trouble Codes (DTC) P20EE And P103C, Diagnostic Procedure; REPLACES GUIDED DIAGNOSTICS IN PREMIUM TECH TOOL (...
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PTT ) - US17+OBD16 And Newer Chassis ONLY
Mack Chassis - Vibration Questionnaire, Driveline Angle Worksheet And Rough Ride Check Sheet
Plugs, Pressure Protection Manifold
** Tech Tip ** TT - 001 - 2015 - How And When To Diagnose A P0402 Code
Issues with the Charge Air System may result in the presence of oil in the Charge Air Cooler ( CAC ) or intake piping.
Diagnostic Trouble Codes (DTCs), Low Oil Pressure, CXU, GU, LEU, MRU
MACK TRUCKS INC. HAS DETERMINED THE CAP NUT THAT RETAINS THE INTERAXLE DRIVESHAFT YOKE TO THE REAR AXLE INPUT SHAFT MAY...
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BE SUBJECT TO PREMATURE LOOSENING ON CERTAIN CHU, CMH, CMM, CXU, GU, LEU, LR, MRU AND TD MODEL VEHICLES. THE POTENTIAL RISK IS THAT IF THE NUT COMES OFF, THE YOKE CAN SEPARATE FROM THE AXLE INPUT SHAFT AND CAUSE THE DRIVESHAFT TO DISCONNECT. IF THIS OCCURS, A DISCONNECTED DRIVESHAFT CAN DISABLE THE VEHICLE AND RESULT IN DEBRIS IN THE ROADWAY, WHICH INCREASES THE RISK OF A VEHICLE CRASH.
DIAGNOSTIC TROUBLE CODES (DTCS), LOW OIL PRESSURE, CXU, GU, LEU, MRU.
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
MACK TRUCKS: LOW OIL PRESSURE.
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STORED DTC SPN 100 FMI 1, DURING LONG HARD PULL CONDITIONS. *JS
MACK TRUCK: ON CERTAIN TRUCKS, THERE IS A LOSS OF SPEED (LOW) ASSIST.
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THE PUMP FLOW AND PRESSURE MUST BE TESTED BEFORE REPLACING TANDEM PUMP ASSEMBLY. *PE
MACK TRUCKS: THERE MAY BE ISSUES WITH BOLTS SUCH AS LOOSENING/ BREAKING AT THE TORQUE ROD ATTACHMENT.
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*RM
Electrical
28 bulletinsMack MMD Alternator Pulley
2008 Document reformatted to be published as a TSB in Impact.
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Electrical equipment panel label.
2008 Document reformatted to be published as a TSB in Impact.
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Differential pressure sensor hose.
2008 Document reformated to be published as a TSB in Impact.
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Revised battery ti battery cable
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions.
(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP).
Sensor And Parameter Value Monitor - Template Parameter List For Pre-OBD (9-Pin Diagnostic Connector) Chassis In Premium...
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Tech Tool ( PTT ); Regeneration And Road Test Sensor Monitor Parameters - US07 And US10 Emissions, Model Years 2008 To 2013
No Start Condition After Over The Air Programing - VECU5 No Start "Safe State"
Temperature Sensor Troubleshooting Guide - US10+OBD13 And Newer
Low Voltage Disconnect (LVD), Function Description
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
Aftertreatment Control Module ( ACM ) Diagnostic Trouble Codes ( DTC ) U0001-88 and U0010-88 Lighting The Malfunction...
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Indicator Lamp ( MIL ); Possible Derate Warning US10 And Newer Chassis
Intake Pre-heater Electrical Schematics (Diagrams) - US10+OBD13, US14+OBD13 To US14+OBD16 Emissions
Lighting Control Module ( LCM ) Replacement - Refer To Technical Parts Information ( TPI ) 364 - 034 Control Unit
Aftertreatment Control Module (ACM) Offline/Not Visible/Missing From Control Unit Information in Premium Tech Tool (PTT)...
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- US10+OBD13 And Newer Emissions
Electronic Control Unit (ECU) Replacement (EMS, VECU, TECU, LCM) - Programming (Conversion Kit) Requirements When...
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Installing An ECU With A Newer Part Number - US04 To US10 Chassis (9-Pin Diagnostic Connector)
Exhaust Gas Recirculation (EGR) System - Fault Codes SPN 412 FMI 0,2,5; Diagnostic Trouble Codes (DTC) P040A, P040B,...
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P1121 - Temperature Sensor Inspection
Diagnostic Trouble Codes (DTC) P0194-00 - Fuel Rail Pressure Sensor, Circuit Erratic, Intermittent And/Or P016E-00...
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Closed Loop Fuel Pressure At Control Limit, Pressure Too High - US17+OBD16 (Common Rail Fuel System) Emissions And Newer; Model Year 2017 And Newer
** Tech Tip ** TT - 007 - 2015 - Diagnosing The Aftertreatment Control Module DTCs P202D, P208E, P20E8 - OBD13 (Commonly...
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Model Year 2014); Newer Chassis AFTER Reviewing Other Solutions
Mack Chassis - Aftertreatment Control Module ( ACM ) Offline / Not Visible / Missing From Control Unit Information in...
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Premium Tech Tool ( PTT )
Particulate Matter ( PM ) Sensor Diagnostic Trouble Codes ( DTC ) Illuminating The Malfunction Indicator Lamp ( MIL );...
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Tech Tip TT-014-2016 - OBD16 And Newer Emissions (Commonly Model Year 2017, Includes Common Rail Fuel System Chassis), Rewritten to split emissions levels, reflect GHG17 software release
ECM and ACM Reprogramming, OBD2015
Mack Chassis - Aftertreatment Control Module ( ACM ) not visible in Premium Tech Tool ( PTT ).Added more checks and...
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procedures
BATTERY CABLE MOUNTING CLAMPS, MAY EXPERIENCE THE BATTERY CABLE CLAMPS BREAKING OR CRACKING.
MACK TRUCK: TORQUE ISSUE AND MATERIAL MAY BE CAUSING BATTERY CABLE CLAMPS TO CRACK OR BREAK.
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TRUCK NEEDS TO BE INSPECTED TO DETERMINE HOW MANY CLAMPS ARE CRACKED OR BROKEN. MODEL 2010-2012 CHU, CXU, GU, LEU, MRU, TD. *PE
MACK TRUCK: INFORMATION REGARDING THE EXPANSION TANK COOLANT PIPE STATIC MAKING CONTACT WITH STARTER SOLENOID WIRE AND...
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RUBBING THROUGH WIRE INSULATION. MODELS LEU AND MRU. *PE
MACK TRUCKS: INFORMATION ON THE REPLACEMENT OF THE AFTERTREATMENT ATOMIZATION MODULE.
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*RM
MACK TRUCKS: A WIRING HARNESS CONNECTOR IN THE FRONT CHASSIS MAY NOT SEAL CORRECTLY CAUSING CORROSION.
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*RM
Transmission
12 bulletinsCBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.
Warranty Automated Manual Transmission ( AMT, I-Shift, mDrive ) Control Housing Assembly; Guidelines For Filing A Claim...
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For Chassis Return Visit With Transmission Issues After A Repair Requiring Control Housing Removal And Reinstallation - US07 And N.
Automated Manual Transmission ( AMT ) I-Shift / mDRIVE - Ribbon Harness Replacement - Speed Sensor Bolts, Possible Fault...
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Codes P1058 - 21 Or MID 130 PID 161 FMI 1
Mack Chassis - Vehicles Equipped With An Automated Manual Transmission Model F ( AMT-F, mDrive ), Premium Tech Tool (...
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PTT ) Gearbox Calibration Failure; Gearbox Calibration Operation Stops And Fails At 33% When Run With Transmission Removed
Automated Manual Transmission (AMT) (Spigot Bearing) Input Shaft Repair Kit And Shim Kit, Part Number Information,...
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Reference Guide - US07 And Newer Emissions, Model Year 2008 And Newer
Mack Chassis - Equipped With An Automated Manual Transmission (mDrive, AMT) AMT-C, AMT-D Or AMT-F - Transmission Oil...
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Specifications - Model Years 2010 To 2020
Automated Manual Transmission Gearbox Will Not Shift To High Range After Gearbox Repair; MID 130 PSID 24 FMI 1, P1072-92...
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Unintentional Disengagement Of High Range - US07 And Newer Emissions, Model Year 2008 And Newer
Transmission Oil Cooler Hose, Replacement
Mack Chassis - Equipped With An Allison Transmission: Enable 6th Speed - All Emissions, All Model Years
Effective September 2016, a revised composite bevel gear compartment cover with steel threaded fill plug and...
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face-mounted o-ring was implemented into production for MACK CRD202/203, CRD150/151 and CRD 125/126 carriers. The revised composite cover replaces the previous composite cover with the rubber fill plug.
ON SOME MACK MODELS BUILT WITH AN ALLISON TRANSMISSION, BETWEEN MAY 16, 2011 AND AUGUST 9, 2013, MAY EXPERIENCE MULTIPLE...
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OPEN CIRCUITS IN THE 31 WAY TRANSMISSION CONNECTOR. THIS IS DUE TO A SUPPLIER MANUFACTURING ISSUE WITH THE CONNECTOR.
MACK TRUCK: SOME TRUCKS MAY EXPERIENCE, ON 31 WAY TRANSMISSION CONNECTOR, MULTIPLE OPEN CIRCUITS, DUE TO A...
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MANUFACTURING SUPPLIER ISSUE WITH CONNECTOR. MODEL 2011-2013 LEU, MRU. *PE
Suspension
6 bulletins2008 Document reformatted to be published as a TSB in Impact.
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Air suspension ride height.
Electronically Controlled Suspension (ECS) Losing Air Pressure
Mack Chassis - Front Hub With Unit-Bearings ( Unitized Wheel Bearings ), Inspection Information And Guidelines -...
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Commonly Model Year 2008 And Newer
V-Stay Rod Cover, Replacement.
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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.
BUMPER, REPLACEMENT. THE CURRENT FRONT BUMPER ON SOME MACK MRU TRUCKS BUILT BETWEEN 10/22/2007 AND 11/14/2014 MAY...
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EXPERIENCE TWISTING AND WARPING WHEN MOUNTED WITH SINGLE SUPPORT STRUTS AT EACH END OF THE BUMPER. TO PREVENT WARPING AND TWISTING OF THE FRONT BUMPER, A MORE ROBUST BUMPER DESIGN WILL REPLACE THE CURRENT BUMPER (PART NUMBER 25165882, OR 25165881).
MACK TRUCKS: PROCEDURE TO REPLACE BOLTS ON THE FRONT SPRING BRACKET WHEN THEY BECOME LOOSE OR BROKEN.
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*RM
Lighting
6 bulletinsTSB-Charge Air Cooler t-clamp install.
Mack Chassis " Air Restriction Light On " In The Cluster.
Mack Chassis - Diagnostic Trouble Code ( DTC ) P2459 Lighting The Malfunction Indicator Lamp ( MIL ); Possible Frequent...
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Regeneration Requests - OBD15 And US14+OBD16 (Non-Common Rail) Chassis
Mack Chassis - Diagnostic Trouble Code ( DTC ) P2459 Lighting The Malfunction Indicator Lamp ( MIL ); Possible Frequent...
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Regeneration Requests - OBD15 And Newer Chassis
Mack Chassis - Diagnostic Trouble Code ( DTC ) P226C Intermittently Lighting The Malfunction Indicator Lamp ( MIL ) -...
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OBD15 And OBD16 Conventional Chassis.Updated to reflect release of FSB284-064 (Above)
Diagnostic Trouble Code ( DTC ) P0422 Lighting The Malfunction Indicator Light ( MIL ) - OBD15 And OBD16 Chassis...
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(Non-Common Rail).Updated to reflect release of FSB284-064 (Above)
Brakes
5 bulletinsCBR - Active "Set Park Brake" Message On Drivers Information Display (DID).
Bendix ACom - EC80 ESP Controller; ABS And ATC Lights Illuminated, Fault Codes Present After Making Changes, Calibration...
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Or Programming With Acom
INTERFERENCE BETWEEN THE BRAKE LINING AND THE SPRING CAP WAS DISCOVERED ON SOME MACK CHU, CXU, GU, TD, LEU, MRU TRUCKS...
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EQUIPPED WITH 203 MM (8 IN) REAR DRUM BRAKES AND CAMELBACK REAR SUSPENSION.
MACK: AIR DISC BRAKE EXPERIENCING THERMAL OVERLOAD CONDITION THAT OVER ADJUSTMENT OF NORMAL PAD WEAR COMPENSATION THAT...
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MAINTAINS RUNNING CLEARANCE BETWEEN BRAKE PAD AND ROTOR AND REDUCES RUNNING CLEARANCE BELOW DESIRED LEVEL. MODEL CHU, CXU, GU, LEU, MRU, TD. NO YEARS LISTED. *PE
MACK TRUCKS: ON SOME TRUCKS, WHERE ATTACHMENT TO COMPRESSOR, TRUCK MAY EXPERIENCE A FAILURE OF BRAKE COMPRESSOR AIR...
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INLET HOSE AND NEED TO REPLACE BLACK RUBBER BRAKE COMPRESSOR INLET HOSE WITH NEW SILICONE HOSE AND CLAMPS. MODELS 2010-2013 LEU, MRU, CUMMINS ISL-G. *PE
Pre-Delivery & Maintenance
3 bulletinsCBR - Accelerator Pedal: Inspection Instructions
CBR: eWarranty To UCHP Labor Code ( SCC Code ) Crossover, Conversion Information For Use With Campaigns ( FI, PI ) And...
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Recalls ( EC, SC ), Location On Trucks Dealer Portal ( TDP )
INTERAXLE YOKE RETAINING NUT RECALL.
Body & Paint
2 bulletins2008 Document reformatted to be published as a TSB in Impact.
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Paint protection.
Mack Chassis - Model MRU - Inner and Outer Door Panel Repair Procedure; Outer Door Surface Separating From The Inner...
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Door Surface
Software & Calibration
2 bulletinsMack Chassis - Bendix Vendor Configuration Program ( VCP ) Software Download Information
MACK TRUCKS: THERE ARE CRACKS IN A STEEL OIL TUBE THAT CAN LEAD TO LEAKING.
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*RM UPDATED 2/21/12. *PE
Infotainment
2 bulletinsMack Chassis - FSB 392 - 004 - Radio, Replacement
Radio, Replacement (revised from FSB 392-004)
Tires & Wheels
1 bulletinFlywheel Housing Thread Repair
HVAC & Climate
1 bulletinMACK TRUCK: THE INABILITY OF UNIT BUILDING AIR PRESSURE IS DUE TO BRASS COLLAR CRIMPED ONTO STAINLESS STEEL COMPRESSOR DISCHARGE LINE SPLITTING.
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MODEL LEU, MRU. *PE