WenmarOpen by Wenmar Pro

Service bulletin KC-751

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10215286
Published by NHTSA2022-07-05
Manufacturer's numberKC-751
Manufacturer's date2022-06-28
NHTSA componentPOWER TRAIN

NHTSA's summary

Vehicles Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F ) - Transmission Oil Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
MACK ANTHEM (AN)2016 to 2017
MACK ANTHEM (AN)2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
MACK ASET
MACK CH
MACK CHK SERIES
MACK CHU
MACK CHU2010 to 2018
MACK CHU6132010
MACK CHU6142010
MACK CL
MACK CLASS 6
MACK CLASS 7
MACK CLASS 8
MACK CMH2010 to 2012
MACK CMM2010 to 2013
MACK CRD SERIES
MACK CRD112/113
MACK CRD200
MACK CRD92/93
MACK CS 300
MACK CS 300P
MACK CS SERIES
MACK CV
MACK CX
MACK CXU
MACK CXU2010 to 2018
MACK CXU6122010 to 2011
MACK CXU6132010
MACK CXU613E2010
MACK CXU6142010
MACK DM
MACK DM SERIES
MACK DM400
MACK DM600
MACK DM807
MACK DM809
MACK DM811
MACK DMM SERIES (the catalog's model; the bulletin names a series or trim of it)
MACK E6
MACK E7
MACK F SERIES
MACK FDM
MACK FREEDOM
MACK GRANITE (GR)2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
MACK GRANITE (GU)2010 to 2016
MACK GRANITE (GU)2017 (the catalog's model; the bulletin names a series or trim of it)
MACK GU
MACK GU2010 to 2018
MACK GU7132010
MACK GU812E2010
MACK GU8132010
MACK GU813E2010
MACK GU8142010
MACK J-TECH
MACK LE
MACK LEU2010 to 2017
MACK LR
MACK LR2010 to 2014
MACK LR2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022
MACK LR ELECTRIC2020 to 2023
MACK LR62011 to 2016
MACK M35AK
MACK M65BX
MACK MACK
MACK MB SERIES
MACK MC400
MACK MC600
MACK MD2020, 2021, 2022, 2023
MACK MH
MACK MIDLINER
MACK MIDR
MACK MILITARY VEHICLE
MACK MR
MACK MR SERIES
MACK MR400
MACK MR600
MACK MRU2010 to 2018
MACK MS SERIES
MACK MS200P
MACK MS300
MACK MS300P
MACK PINNACLE (CHU)2010 to 2016
MACK PINNACLE (CHU)2017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
MACK PINNACLE (CXU)2010 to 2016
MACK PINNACLE (CXU)2017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
MACK PINNACLE (PI/PN)2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
MACK R
MACK RB
MACK RD
MACK RD SERIES
MACK RM SERIES
MACK RW SERIES (the catalog's model; the bulletin names a series or trim of it)
MACK SR70
MACK T200
MACK T2060A
MACK T2090L
MACK T2090LR
MACK T300
MACK TD
MACK TD2010 to 2019
MACK TD7132010
MACK TD7142010
MACK TE2019 to 2021
MACK TERRAPRO (LEU)2012 to 2016
MACK TERRAPRO (LEU/MRU)2010 to 2016
MACK TERRAPRO (LEU/MRU)2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
MACK TERRAPRO (MRU)2011 to 2016
MACK TERRAPRO (MRU)2017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
MACK TERRAPRO (TE)2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
MACK TERRAPRO (TE)2022 (the catalog's model; the bulletin names a series or trim of it)
MACK TITAN2013 to 2015
MACK TITAN (TD)2010 to 2018
MACK U
MACK V-MAC
MACK V-MAC III
MACK WL
MACK WS

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20261082026-03-11. Powertrain
19V0470002019-01-21. POWER TRAIN:CLUTCH ASSEMBLY
20164952016-10-11. Powertrain
16V0990002016-02-19. POWER TRAIN:DRIVELINE:DRIVESHAFT

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TSB M-913-001 2026092026-10-02. Service bulletin. Parker engine-mounted hydraulic pump service bulletin.
CBR 2573-1 2026042026-05-05. Service bulletin. CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
CBR 2362-3 2026042026-05-04. Service bulletin. CBR - Mack Carrier Nut Adhesive Change.
CBR 2218-6 0320262026-04-02. Service bulletin. CBR - Parker F3 Hydraulic Pump Troubleshooting.
S4558 2025062025-07-03. Service campaign. Mack trucks has determined that certain model year 2021-2024 PI models built with 4.19 rear axle ratios could experience elevated axle oil temps under high road speeds. To correct this issue the 4.19 ratio carriers need to be swapped to 3.79 ratio carriers. Follow the instructions below to replace both carriers with new ones.
CBR 2464-1 2025052025-06-02. Service bulletin. Mack Chassis - Rear Axle Overheat
CBR-2387 2024092024-10-04. Service bulletin. CBR: Vehicles Equipped With A Lift Axle - Wheel Speed Fault Code SPN 793, SPN 794 Set When Axle Is Up
CBR-2258 2024092024-10-03. Service bulletin. CBR: Diagnostic Trouble Code (DTC) P107471 - AMT-F
CBR-731 2024092024-10-03. Service bulletin. CBR: Automated Manual Transmission (AMT) Model D or F (mDrive and I-Shift, AMT-D, AMT-F) - Transmission Oil Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer
CBR-2391 2024082024-09-04. Service bulletin. CBR: Diagnostic Trouble Code (DTC) U010187- Lost Communication With TECU