2024 Mack MD TSBs
29 Technical Service Bulletins across 9 categories
Categories
Other
11 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: 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
Electrical
5 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
Engine
4 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.
CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
Transmission
2 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.
Fuel System
2 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
EC: Mack Vehicle Emission Label
Suspension
2 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
Brakes
1 bulletinService Campaign - MMD Brake Pressure Switch
Steering
1 bulletinService Campaign: MMD Steering Column Pivot Nut Torque
Pre-Delivery & Maintenance
1 bulletinCBR: Pre-Delivery Inspection (PDI) Torque Values.
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This is to help with the torque specs needed to complete a Pre- Delivery Inspection (PDI).