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Service bulletin 426

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 id631388
Published by NHTSA2002-05-23
Manufacturer's number426
Manufacturer's date2002-03-01
NHTSA componentPOWER TRAIN:AXLE ASSEMBLY

NHTSA's summary

SUBJECT ON FRONT AXLE QUICK RELEASE VALVE. *YH

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

Transmission and driveline, Axle

Vehicles listed
FREIGHTLINER SCHOOL BUS

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