# NHTSA recall 08V144000

A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.

- Published by: NHTSA \(United States\)
- Campaign number: 08V144000
- Manufacturer's number: SC0337
- Manufacturer: MACK TRUCKS, INC
- Reported: 2008\-03\-26
- Owners notified: 2008\-04\-15
- Component: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE
- Units potentially affected: 218

## What is wrong

MACK IS RECALLING 218 MY 2006\-2007 MR TRUCKS. A CHECK VALVE WAS OMITTED FROM THE SECONDARY SUPPLY PORT OF THE SR\-7 SPRING BRAKE MODULATING VALVE.


## What can happen

AS A RESULT, AN AIR LEAK IN THE SECONDARY OR PRIMARY SYSTEM MAY RESULT IN THE PARK BRAKES INADVERTENTLY APPLYING, INCREASING THE RISK OF A CRASH.


## The remedy

DEALERS WILL ADD A CHECK VALVE TO THE SECONDARY SUPPLY PORT OF THE SR\-7 SPRING BRAKE MODULATING VALVE AND WILL ALSO REPAIR THE SR\-7 VALVE BY APPLYING A CHECK VALVE REPAIR KIT AS REQUIRED FOR THE BENDIX SAFETY RECALL \(PLEASE SEE 07E\-037\).  THE RECALL BEGAN ON APRIL 15, 2008.  OWNERS MAY CONTACT MACK AT 1\-800\-528\-6586.


## Notes

MACK RECALL NO. SC0337.CUSTOMERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1\-888\-327\-4236 \(TTY 1\-800\-424\-9153\), OR GO TO HTTP://WWW.SAFERCAR.GOV.


## Vehicles this campaign lists

- [2006 MACK MR](/makes/mack/mr/2006/recalls.md). Built 2005\-08\-23 to 2006\-03\-27.
- [2007 MACK MR](/makes/mack/mr/2007/recalls.md). Built 2005\-08\-23 to 2006\-03\-27.

## Bulletins for the same vehicles and component

A bulletin is the manufacturer's note to its dealers. It is not part of this recall.

- [CBR 407 072025](/bulletins/11021333.md), 2025-08-04, Service bulletin
- [CBR\-407 202409](/bulletins/11008366.md), 2024-10-03, Service bulletin

## Check a VIN

- [NHTSA recall lookup by VIN, United States](https://www.nhtsa.gov/recalls)
- [Transport Canada recall search, Canada](https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng)

JSON: [/v1/recalls/nhtsa/08V144000](/v1/recalls/nhtsa/08V144000)

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