Technical Service Bulletin SBW31-016 — 2011 WESTERN STAR 4700
EQUIPMENT
Bulletin Details
| TSB ID | SBW31-016 |
| Manufacturer | |
| Vehicle | 2011 WESTERN STAR 4700 |
| Component | EQUIPMENT |
| Communication Date |
Bulletin Summary
Western Star Bulletin for Non-Airliner Rear Suspension Crossmember Fastener Change. With the start of production on March 2, 2020, the fasteners used to assemble the non-Airliner rear suspension (bogie) crossmember have changed. The rear suspension bogie crossmember gussets to the C-channel will be assembled with 5/8âÂÂ18 fasteners. This change includes a revision to a higher friction nut that requires an increase in tightening torque. The new higher friction nut can be identified by its green color.
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.
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