# Service bulletin 121031

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.

- Type: Service bulletin
- NHTSA id: 10020362
- Published by NHTSA: 2006\-09\-21
- Manufacturer's number: 121031
- Manufacturer's date: 2006\-06\-09
- Replaces: 121031
- NHTSA component: SUSPENSION

## NHTSA's summary

SUSPENSION CROSSMEMBERS \- CXN AND CHN MODELS EQUIPPED WITH MACK AL SUSPENSION. \*TT

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Suspension

## Vehicles listed

- 2002 to 2007 MACK CHN
- 2002 to 2007 MACK CXN

## Other bulletins for the same vehicles and component

- [M728\-005A 202308](/bulletins/10241946.md), 2023-09-06, Service bulletin: SUSPENSION. TSB: Barksdale Leveling Valve, Leak Test
- [M\-451\-001](/bulletins/10219059.md), 2022-09-01, Service bulletin: STRUCTURE; SUSPENSION:FRONT; POWER TRAIN:DRIVELINE. 2007 Document reformatted to be published as a TSB in Impact. Updated Crossmember for improved clearance.
- [M\-711\-001](/bulletins/10219057.md), 2022-09-01, Service bulletin: SUSPENSION:REAR; SUSPENSION. 2008 Document reformatted to be published as a TSB in Impact. Rear Suspension Repair.
- [KC\-2170](/bulletins/10213640.md), 2022-06-07, Service bulletin: SUSPENSION. Electronically Controlled Suspension \(ECS\) Losing Air Pressure
- [FSB\-461\-001](/bulletins/10040696.md), 2011-09-08, Service bulletin: SUSPENSION:REAR:AXLE:NON\-POWERED AXLE ASSEMBLY. MACK TRUCKS: REAR AXLE HOUSING REPLACEMENT. \*RM
- [SB\-12\-1043](/bulletins/10027264.md), 2009-01-13, Service bulletin: SUSPENSION:REAR; SUSPENSION. MACK TRUCK: SUSPENSION CROSSMEMBERS, PRIMAAX REAR SUSPENSION. MODELS EQUIPPED WITH THE HENDRICKSON PRIMAAX REAR AIR SUSPENSION MAY DEVELOP A CRACK IN THE RADIUS OF THE LOWER END GUSSET. \*PE

JSON: [/v1/bulletins/10020362](/v1/bulletins/10020362)

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