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Service bulletin S7669

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 id10228635
Published by NHTSA2023-01-04
Manufacturer's numberS7669
Manufacturer's date2022-12-15
NHTSA componentPOWER TRAIN

NHTSA's summary

MMD Fan Hub Bolt Torque

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 MD2023

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

Other bulletins for the same vehicles and component
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.
TSB M-432-002A 0320262026-04-02. Service bulletin. TSB - Cable, Gear Selector, Replacement
CBR-1008 2024042024-05-01. Service bulletin. CBR: Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F, mDrive) Missing X1 Value In VDA And Default Settings Guidelines, ParameterP1AOB; Fault Code P1052-54, Error 40,Or Error 18 Encountered During Clutch Or Tran.
CBR-2258 2024022024-03-05. Service bulletin. CBR - Diagnostic Trouble Code (DTC) P107471 - AMT-F
M-465-001 2023112023-12-05. Service bulletin. TSB: Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers. 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-2112 2023072023-08-02. Service bulletin. CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-474-Ver52023-06-05. Service bulletin. CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
KC-21122022-07-05. Service bulletin. Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-4052022-07-05. Service bulletin. Warranty Automated Manual Transmission ( AMT, I-Shift, mDrive ) Control Housing Assembly; Guidelines For Filing A Claim For Chassis Return Visit With Transmission Issues After A Repair Requiring Control Housing Removal And Reinstallation - US07 And N.