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Service bulletin CAL WST 32-002

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 id10168628
Published by NHTSA2019-12-02
Manufacturer's numberCAL WST 32-002
Manufacturer's date2019-12-02
NHTSA componentEQUIPMENT; SUSPENSION; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

Customer Advisory Letter for Airliner welded axle seats. The welded axle seats were installed incorrectly on the rear most drive axle for specific vehicles resulting in an incorrect axle pinion angle. The existing welded axle seats will be removed and replaced with new axle seats installed in the correct orientation.

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, Suspension

Vehicles listed
WESTERN STAR 47002019, 2020
WESTERN STAR 49002019, 2020
WESTERN STAR 57002019, 2020

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

Recalls for the same vehicles and component
22V3380002022-05-16. EQUIPMENT:OTHER:LABELS
20V6340002020-10-14. EQUIPMENT:OTHER:LABELS; TIRES
20V5390002020-09-03. SUSPENSION:MULTIPLE AXLE
20V2110002020-04-10. EQUIPMENT:OTHER:LABELS
18V9130002018-12-19. SUSPENSION:FRONT:CONTROL ARM; STEERING:LINKAGES:TIE ROD ASSEMBLY; STEERING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TSB-32-020-WST2026-03-27. Service bulletin. Technical Service Bulletin for TufTrac M12 Bolts
SS734-WST2024-06-05. Other. Service Solution for Thread Spring Pin Suspension Alignment & Installation
SBW54-0742022-02-05. Service bulletin. Revised Western Star Service Bulletin for Pana-Pacific 540 Radio Controls Not Operating Normally. Minor note: added an update of document previously submitted. The related VMRS codes are added
CALWS49-0012021-05-25. Service bulletin. Customer Advisory Letter on ATD Inlet Pipe Bellows Assembly
WSTCAE180-20202021-05-18. Service bulletin. Portland Truck Plant Paint Changes
WSTCAE177-20202021-05-18. Service bulletin. Meritor Transfer Case Updates
WSTCAE176-20202021-05-18. Service bulletin. Removable Front Tow Hook Changes
WSTCAE172-20202021-05-18. Service bulletin. Tractor Reflective Devices
WSTCAE171-20192021-05-18. Service bulletin. Allison FuelSense 2.0
WSTCAE170-20192021-05-18. Service bulletin. New Valeo A/C Compressor