Service bulletin Air Brake Rework

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.

NHTSA's summary

Potential for slack adjuster failure on trailer air brakes. Failure observed when the self-adjusting actuator rod pulls out the boot. Failure has not prevented brakes from actuating but may cause the brakes to not release fully. Units re-worked to replace push rod on brake chambers with a shorter rod meeting axle manufacturer's specifications.

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

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

Brakes

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

• Bulletins for another vehicle
• Report an error on this page
• Report an error by email