Technical Service Bulletin SB-49-12 — 1997 WESTERN STAR 4900
FUEL SYSTEM, DIESEL
Bulletin Details
| TSB ID | SB-49-12 |
| Manufacturer | |
| Vehicle | 1997 WESTERN STAR 4900 |
| Component | FUEL SYSTEM, DIESEL |
| Communication Date |
Bulletin Summary
WESTERN STAR: AROUND THE DIESEL EXHAUST FLUID (DEF) AN EXCESSIVE AMOUNT OF CRYSTAL OR POWDER BUILT UP INDICATES A LEAK CAUSED BY EVAPORATION OF DEF EXPOSED TO AIR AND/OR DAMPNESS. *PE
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.