Technical Service Bulletin CALShackle — 2020 WESTERN STAR 4700
EQUIPMENT ADAPTIVE/MOBILITY
Bulletin Details
| TSB ID | CALShackle |
| Manufacturer | |
| Vehicle | 2020 WESTERN STAR 4700 |
| Component | EQUIPMENT ADAPTIVE/MOBILITY |
| Communication Date |
Bulletin Summary
Customer Advisory Letter for Threaded Pin and Bushing. Western Star Trucks built in 2020 with threaded pins and bushings have been found with loose shackles on the rear of the steering axle suspension. The pins are seizing from lack of lube causing the shackle to rotate on the pin.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2020 WESTERN STAR 4700
TechTalk12347K
EXTERIOR LIGHTING
TechTalk12347K
ELECTRICAL SYSTEM
TechTalk12331K
ELECTRICAL SYSTEM
D21M3
POWER TRAIN
TechTalk7155
STEERING
CALShackle
STEERING
CALShackle
SUSPENSION
CALShackle
EQUIPMENT
SBW54-077
ELECTRICAL SYSTEM
SS1034783REV
SUSPENSION