Technical Service Bulletin S3904 202403 — 2023 MACK PINNACLE (PI/PN)
ENGINE AND ENGINE COOLING
Bulletin Details
| TSB ID | S3904 202403 |
| Manufacturer | |
| Vehicle | 2023 MACK PINNACLE (PI/PN) |
| Component | ENGINE AND ENGINE COOLING |
| Communication Date |
Bulletin Summary
Service Campaign: Mack trucks has determined that certain AN, GR, PI, and TE model trucks built with a MP8 engine could experience a reduced clamping load on the turbocharger mounting hardware causing the hardware to become loose. On affected vehicles follow the instructions below to remove the turbocharger and replace the mounting hardware and mounting gasket with new parts.
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.