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Service bulletin CALFTL32-006

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 id10179062
Published by NHTSA2020-09-01
Manufacturer's numberCALFTL32-006
Manufacturer's date2020-08-17
NHTSA componentSUSPENSION; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

NHTSA's summary

Customer Advisory Letter for Hendrickson Primaax EX 69,000 lb Tri-Axle Rear Air Suspension Height-Control Valve Relocation. The attached document provides work instructions for relocating the height-control valve downward 1.62 inches (41.3 mm) to prevent the linkage from protruding above the top flange of the frame when the suspension air is dumped.

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

Equipment and accessories, Labels and manuals, Suspension

Vehicles listed
FREIGHTLINER BUSINESS CLASS M22016 to 2021

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