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Service bulletin SB541002

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 id604382
Published by NHTSA1999-04-27
Manufacturer's numberSB541002
Manufacturer's date1999-02-19
NHTSA componentSUSPENSION

NHTSA's summary

INFORMATION ON INSTALLING THE NEW-STYLE HEIGHT CONTROL VALVE FOR AL SUSPENSION BUILT WITH HEIGHT CONTROL VALVE AND SEPARATE PILOT DUMP VALVE. *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
MACK CH
MACK CL
MACK MR SERIES
MACK RD

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