Technical Service Bulletin 21PBE — 2020 PETERBILT 348
SERVICE BRAKES, AIR
Bulletin Details
| TSB ID | 21PBE |
| Manufacturer | |
| Vehicle | 2020 PETERBILT 348 |
| Component | SERVICE BRAKES, AIR |
| Communication Date |
Bulletin Summary
âSafety Recall â TSE Brake Chamber Air Leak â NHTSA ID: 21V328. Meritor brake chambers were built with a misaligned park spring, which may cause a fatigue hole in the diaphragm and an internal air leak. The affected brake chambers will be replaced.
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.