2023 Mack MD TSBs
69 Technical Service Bulletins across 11 categories
Categories
Other
17 bulletinsCBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
CBR - Mack Carrier Nut Adhesive Change.
CBR - No Start Condition After Over the Air Programing.
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
CBR - Diagnostic Trouble Code (DTC) P107471 - AMT-F
CBR: TGW Will Not Connect After SIM Card Replacement
CBR: Frame Or Cab Lean
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
Mack Chassis - Parker F-3 Hydraulic Pump Installation - Model Year (MY) 2023
Back Office Mack Chassis - Secondary Gauge Set Up - Model Year 2018 and Newer.
Premium Tech Tool ( PTT ) Training Materials And Support Tools
DEF Pump Cycling periodically Hours After Key Off
Mack - PTO Pump Speed Calculator
Engine
13 bulletinsVehicles may present with oil leak coming from the clutch/flywheel housing and observation of burned clutch smell or clutch slipping.
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These symptoms can be mistaken as a crankshaft rear main seal leak, when the actual cause is the crankshaft adaptor O-ring.
CBR: Turbo Compound (TC) Hot Side Noise, Diagnostic Information.
Some Mack MMD trucks could experience an issue with the ignition lock cylinder sticking.
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Trucks that experience a sticking lock cylinder could have a lock cylinder that becomes tight or sticks in the start position. If the above condition is found replace the ignition lock cylinder.
Barksdale Leveling Valve, Leak Test
CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
11L, 13L, And 16L Engine Oil Analysis Specifications - US10 And Newer Emissions
(Back Office Only) - Engine Brake Vibration When In High Setting - 13L Engine With Variable Geometry Turbo ( VGT ) -...
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US17 And Newer Emissions (Common Rail Fuel System).
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
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 Low Oil Pressure Diagnostic Process For 11 Liter Engines
Electrical
12 bulletinsCBR - Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions to US22+OBD2023 (DOES NOT APPLY TO AN(4)...
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and PR(4)).
CBR - When an OTA (Over-The-Air) job starts to program the VECU blocks the starter relay out, if the job ends in a...
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Critical failure, the vehicle will remain in Safe State.
Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer
Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement
Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement
DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer.
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions.
(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP).
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
Fuel System
10 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
MMD Incorrect Fuel Tank Label
USE FOR NEW VEHICLES (US21+OBD22 Emissions) - Intermittent Diagnostic Trouble Codes U02A3, U029D, U029E
Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide - US10+OBD13 And Newer Emissions.
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
Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide - US10+OBD13 And Newer Emissions
Suspension
7 bulletinsFrame lean can be caused by several seemingly isolated possibilities.
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The two most common are suspension and frame assembly issues.
CBR: Mack Medium Duty (MMD) Rear Suspension Bump Stop Bending
Hub Cap, Leaking
New TSB- Hub cap leaking
MMD Fan Hub Bolt Torque
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
Transmission
5 bulletinsTSB - Cable, Gear Selector, Replacement
CBR: Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F, mDrive) Missing X1 Value In VDA And...
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Default Settings Guidelines, ParameterP1AOB; Fault Code P1052-54, Error 40,Or Error 18 Encountered During Clutch Or Tran.
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
Body & Paint
1 bulletinCBR: Mack Chassis - Medium Duty - Front Bumper License Plate Mounting Holes
Lighting
1 bulletinTSB-Charge Air Cooler t-clamp install.
Infotainment
1 bulletinVehicle Overspeed Warning Comes Active At A Lower Speed Than Expected; Vehicle Overspeed Warning In Driver Information...
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Display (DID) - Model Year 2018 And Newer With New Style Instrument Cluster.
Pre-Delivery & Maintenance
1 bulletinMack Dealer Support Communication - Selecting The Proper SR Area For Creating An eService
Steering
1 bulletinMMD Steering Column Bracket Hardware