Defect Description For Recall
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.
Make Of Vehicle
MACK
Model Of Vehicle
CHU
Year
2008
Recall Campaign Number
07V361000
Component Description
Service Brakes, Air:Supply:Check Valve
Effect Of Defect
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.
Fix Defect
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.
Vehicle Manufacturer
Mack Trucks, Inc
Start Of Manufacture
20040102
End Of Manufacture
20070726
Type Of Vehicle Recall
V
Number Affected
21847
Date Owners Notified
20080109
Initiated By
Mfr
Responsible Manufacturer
Mack Trucks, Inc.
Date Report Received
20070815
Make Campaign Number
SC0334