# 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10200217-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10200217-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine, Equipment and accessories, Exhaust and emissions, Crankcase ventilation \(PCV\)

## Vehicles listed

- MACK CLASS 7
- MACK CLASS 8

JSON: [/v1/bulletins/10200217](/v1/bulletins/10200217)

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