# Service bulletin SB\-215026

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: 10028866
- Published by NHTSA: 2009\-06\-05
- Manufacturer's number: SB\-215026
- Manufacturer's date: 2009\-03\-11
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM

## NHTSA's summary

MACK TRUCK: COOLING SYSTEM REVISIONS: THERMOSTAT HOUSING CONSISTS OF TWO SECTIONS \(THERMOSTAT SECTION AND BYPASS SECTION\), WITH A CAST WALL SEPARATING THE TWO. FOR THE BYPASS FEATURE TO FUNCTION, THERE MUST BE A PASSAGE THROUGH THE CAST WALL TO ALLOW COOLANT FLOW BETWEEN THE TWO SECTIONS. MODEL AND MODEL YEARS UNKNOWN. \*PE

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Engine, Cooling system

## Vehicles listed

- MACK MACK

JSON: [/v1/bulletins/10028866](/v1/bulletins/10028866)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20SB-215026&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10028866&vehicle=Service%20bulletin%20SB-215026)