Service bulletin FSB 257 003
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10200217 |
| Published by NHTSA | 2021-08-09 |
| Manufacturer's number | FSB 257 003 |
| Manufacturer's date | 2015-10-30 |
| NHTSA component | EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV) |
NHTSA's summary
Crankcase Ventilation Tube Heater. For customer operating vehicles in extreme cold temperatures, Mack Trucks has developed a device that will prevent the crankcase ventilation (CCV) tube from building up ice and freezing over which could lead to engine damage.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system, Engine, Equipment and accessories, Exhaust and emissions, Crankcase ventilation (PCV)
| MACK CLASS 7 | |
|---|---|
| MACK CLASS 8 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.