2025 Mack LR TSBs
31 Technical Service Bulletins across 9 categories
Categories
Other
9 bulletinsThe purpose of this CBR is to provide steps on how to correct a customer complaint of DTC P107B86 accompanied With...
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intermittent loss of throttle.
SC - Trunion Nut Pinch Bolt.
CBR - 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
Engine
9 bulletinsCBR - Mack Chassis - Model LR - Linear Assist Cylinder Repair.
Inactive Code P25AE00 Being Generated After A Hard Pull And A Momentary Drop In Engine Oil Pressure (Low Oil Pressure)...
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(Possible Related Codes - SPN4811 , SPN 100 , PID 100)
Vehicles 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 - 11L Engine block compatibility and Backward Conversion Parts Requirements
CBR: Automated Manual Transmission (AMT) Model D or F (mDrive and I-Shift, 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
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.
CBR: Turbo Compound (TC) Hot Side Noise, Diagnostic Information.
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.
Electrical
5 bulletinsSC - Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which...
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does not meet our specifications.
CBR - Mack Temperature Sensor Troubleshooting Guide
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
Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does...
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not meet our specifications.
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
CBR: Overhead Wear Overview - Model Year2018 To Current (Common Rail Fuel System ONLY)
Transmission
2 bulletinsCBR - Mack Chassis - Timing Gear Plate Repair
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.
Body & Paint
1 bulletinRemote Control Central Door Lock, Programming; Key Fob Cannot Be Programmed Or Does Not Work After Programming - Model...
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Year 2018 And Newer
Suspension
1 bulletinFrame lean can be caused by several seemingly isolated possibilities.
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The two most common are suspension and frame assembly issues.
Lighting
1 bulletinCBR: The procedure to eliminate the Mack Chassis "Air Restriction Light On" seen in the cluster is to confirm that the...
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parameter YYT is set to "Enable" with Premium Tech Tool.
Pre-Delivery & Maintenance
1 bulletinCBR - Accelerator Pedal: Inspection Instructions