2023 Mack LR TSBs
70 Technical Service Bulletins across 12 categories
Categories
Other
16 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: Diagnostic Trouble Code (DTC) P107471 - AMT-F
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 -Telematics Gateway (TGW) Connect Ability Issues
CBR - Diagnostic Trouble Code (DTC) P107471 - AMT-F
CBR: TGW Will Not Connect After SIM Card Replacement
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.
iLok Fastener Torque
CBR: Diagnostic Trouble Code (DTC) U1FFF68 - Factory Mode Active, Event Information - Model Year (MY) 2023
CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
Engine
16 bulletinsInactive 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.
CBR: For vehicles equipped with an 11L engine, the plastic saddle bracket holding the a/c line on the left side of the...
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engine may move excessively and rub the area where it secures the line.
Barksdale Leveling Valve, Leak Test
CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
CBR: Mack DEF Dosing Valve Diagnostic Trouble Codes (DTC) P202D00, P208E00, P103B00 - US10+OBD13 And Newer Emissions
Engine Control Module (EMS) Software (MSW) Information - Improvement List, Through June 2023 - US21+OBD2020 Emissions
Campaign - On certain Mack truck models built with a MP8 engines, there were some inconsistencies with the engine valve...
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and injector adjustments.
CBR: Model Year 2017 to Current - Fuel Filter Change ( Primary And Secondary ) For The EM - USA17 Emission Engines
CBR: Mack Chassis - Allison Reduced Engine Load At A Stop (RELS) Diagnostic Trouble Code P071a Or P07ce - GR,TE,LR...
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Models - Non-Split/Drop Box PTO
Electrical
11 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 - 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
CBR: US17 GHG Common Rail Fuel System Component Electrical Faults - Model Year 2017 To 2024
CBR: Diagnostic Trouble Code (DTC) U010187- Lost Communication With TECU
Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement
Diagnostic Trouble Code (DTC) P103200: Particulate Matter Sensor Removed from Exhaust - US21+OBD22 Emissions
Mack NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
Mack NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
CBR: Diagnostic Trouble Code (DTC) P225C00 : NOx1 Sensor Stuck High - US17+OBD2019 And Newer Emissions
Transmission
6 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.
CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.
CBR: Automated Manual Transmission ( AMT ) -Transmission Electronic Control Unit ( TECU ) MID130 PSID 29 FMI 7 /P10AE81...
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Fault Codes Being Generated
CBR: Automated Manual Transmission (AMT) Transmission Kickdown Mode
CBR: Timing Gear Plate Repair.
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This solution provides supplementary information to be used when installing a Timing Gear Plate with Integrated Seal.
Fuel System
5 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)
CBR: Intermittent Diagnostic Trouble Codes U02A3,U029D, U029E - USE FOR NEW VEHICLES (US21+OBD22 Emissions)
CBR - Mack Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions
CBR: Diagnostic Trouble Code (DTC) P008A - Low Pressure Fuel System Pressure - Too Low
Suspension
4 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 - Driveline Noise, Suspension Ride Height Too High, Suspension Will Not Exhaust - Chassis Built 2016w01 And Newer.
Vehicles Equipped With Chalmers Suspension - Frame Bracket Hardware Loose or Interfering
Hub Cap, Leaking
Pre-Delivery & Maintenance
4 bulletinsService Campaign: TGW3 Non-Communication
Service Campaign: Mack trucks has determined that certain AN, GR, PI, TE, and LR model trucks built with TGW3 have...
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stopped communicating after production.
CBR - Accelerator Pedal: Inspection Instructions
Service Literature Published and Released in May, 2023
Brakes
3 bulletinsCBR - Brake Caliper Concerns And Premature Brake Pad Wear - Model Year 2023 - 2024
CBR - Active "Set Park Brake" Message On Drivers Information Display (DID).
CBR: SNM 20-005 - HD Disc Brake Rotor Upgrade
Infotainment
2 bulletinsCBR: Vehicle Overspeed Warning Comes Active At A Lower Speed Than Expected; Vehicle Overspeed Warning In Driver...
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Information Display (DID) - Model Year 2018 And Newer With New Style Instrument Cluster
Infotainment System - Volume Drop During A Phone Call, Phone Connected Via Bluetooth
Steering
1 bulletinCBR - Hard Steering Due to Steering Column Miter Box Corrosion Inspection and Replacement Procedure
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
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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