# NHTSA recall 07V361000

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: 07V361000
- Manufacturer's number: SC0334
- Manufacturer: MACK TRUCKS, INC
- Reported: 2007\-08\-15
- Owners notified: 2008\-01\-09
- Component: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE
- Units potentially affected: 21847

## What is wrong

ON CERTAIN TRUCKS EQUIPPED WITH PARKER SINGLE CHECK VALVES \(SCV\) PROVIDED BY BENDIX.  THE DEFECT EXISTS IN THE PARKER SCV THAT CONNECTS WITH THE SUPPLY PORT OF THE SR\-7 SPRING BRAKE MODULATING VALVE.   AFTER PROLONGED USE OF THE PARKER SCV, THE VALVE BODY RETAINER MAY BECOME EXCESSIVELY WORN AND EVENTUALLY BREAK APART.  PIECES OF THE PARKER SCV CAN BECOME LODGED INSIDE THE SR\-7 SPRING BRAKE MODULATING VALVE, POTENTIALLY CAUSING EITHER LEAKAGE OUT OF THE SR\-7 VALVE OR PREVENTING AIR FROM PROPERLY EXHAUSTING FROM THE SR\-7 VALVE.


## What can happen

THIS CONDITION CAN CAUSE A DELAY IN THE APPLICATION OF THE SPRING BRAKES TO PARK THE VEHICLE AFTER THE OPERATOR PULLS THE DASH VALVE BUTTON.  THESE CONDITIONS CAN OCCUR WITHOUT WARNING, LEADING TO UNINTENDED VEHICLE ROLLAWAY, BRAKE DRAG, OR IN THE CASE OF LOSS OF PRIMARY CIRCUIT, INABILITY TO MODULATE THE SPRING BRAKES.


## The remedy

MACK IS WORKING WITH BENDIX TO REPLACE THE PARKER SINGLE CHECK VALVE.  THE RECALL BEGAN ON JANUARY 9, 2008.  OWNERS MAY CONTACT BENDIX AT 1\-440\-329\-9000 OR MACK AT 1\-800\-528\-6586.


## Notes

MACK RECALL NO. SC0334 \(SC0327\).CUSTOMERS MAY 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

- [2005 MACK CHN](/makes/mack/chn/2005/recalls.md). Built 2004\-01\-02 to 2007\-07\-26.
- [2006 MACK CHN](/makes/mack/chn/2006/recalls.md). Built 2004\-01\-02 to 2007\-07\-26.
- [2007 MACK CHN](/makes/mack/chn/2007/recalls.md). Built 2004\-01\-02 to 2007\-07\-26.
- 2008 MACK CHU. Built 2004\-01\-02 to 2007\-07\-26.
- 2006 MACK CTP. Built 2004\-01\-02 to 2007\-07\-26.
- 2004 MACK CV. Built 2004\-01\-02 to 2007\-07\-26.
- 2005 MACK CV. Built 2004\-01\-02 to 2007\-07\-26.
- 2006 MACK CV. Built 2004\-01\-02 to 2007\-07\-26.
- 2007 MACK CV. Built 2004\-01\-02 to 2007\-07\-26.
- 2008 MACK CV. Built 2004\-01\-02 to 2007\-07\-26.
- 2005 MACK CXN. Built 2004\-01\-02 to 2007\-07\-26.
- 2006 MACK CXN. Built 2004\-01\-02 to 2007\-07\-26.
- 2007 MACK CXN. Built 2004\-01\-02 to 2007\-07\-26.
- 2008 MACK CXN. Built 2004\-01\-02 to 2007\-07\-26.
- 2008 MACK CXU. Built 2004\-01\-02 to 2007\-07\-26.
- 2008 MACK GU. Built 2004\-01\-02 to 2007\-07\-26.

## 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
- [KC\-593](/bulletins/10210987.md), 2022-05-05, Service bulletin
- [SC\-334](/bulletins/10032312.md), 2010-03-04, 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/07V361000](/v1/recalls/nhtsa/07V361000)

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