The defect
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH CERTAIN MERITOR-WABCO BRAKE SYSTEM TWO AND FOUR PORT RELAY VALVES. THE VALVE MAY STICK OPEN WHEN A HIGH-PRESSURE APPLICATION IS RELEASED.
The risk
WHEN THE VALVE STICKS OPEN, IT CAN RESULT IN A TOTAL LOSS OF AIR FROM EITHER THE SERVICE OR THE PARK BRAKE SYSTEM. THE DRIVER MAY LOSE BRAKING ABILITY UNDER A SERVICE APPLICATION, POSSIBLY RESULTING IN A VEHICLE CRASH.
The remedy
DEALERS WILL REPLACE THESE VALVES. OWNER NOTIFICATION BEGAN NOVEMBER 16, 2001. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT MACK AT 1-610-709-3011 OR MERITOR WABCO AT 800-535-5560.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack CH | 2000, 2001 |
| Mack CL | 2000, 2001 |
| Mack CV | 2000, 2001 |
| Mack CX | 2000, 2001 |
| Mack DM | 2000, 2001 |
| Mack DMM | 2000, 2001 |
| Mack MR | 2000, 2001 |
| Mack RB | 2000, 2001 |
| Mack RD | 2000, 2001 |
Components: SERVICE BRAKES, AIR:CONTROLS, PEDALS AND LINKAGES
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack CH | 2000 | 0 | 7 |
| Mack CH | 2001 | 0 | 5 |
| Mack CL | 2000 | 0 | 4 |
| Mack CL | 2001 | 0 | 4 |
| Mack CV | 2000 | 0 | 3 |
| Mack CV | 2001 | 0 | 6 |
| Mack CX | 2000 | 0 | 6 |
| Mack CX | 2001 | 0 | 5 |
| Mack DM | 2000 | 0 | 3 |
| Mack DM | 2001 | 0 | 2 |
| Mack DMM | 2000 | 0 | 1 |
| Mack DMM | 2001 | 0 | 2 |
| Mack MR | 2000 | 0 | 4 |
| Mack MR | 2001 | 0 | 3 |
| Mack RB | 2000 | 0 | 3 |
| Mack RB | 2001 | 0 | 3 |
| Mack RD | 2000 | 2 | 5 |
| Mack RD | 2001 | 0 | 5 |
Other service brakes, air recalls in 2001
29 of the 461 recall campaigns reported to NHTSA in 2001 concerned the service brakes, air; MACK TRUCKS, INCORPORATED filed 245 campaigns in all.
| 01V130003 11 Dec 2001 | ENVIRONMENTAL PRODUCTS GROUP |
| 01V130002 9 Nov 2001 | ELDORADO NATIONAL |
| 01V320000 5 Oct 2001 | BLUE BIRD BODY COMPANY |
| 01V319000 1 Oct 2001 | BRENNER TANK, INC. |
| 01V299000 24 Sept 2001 | INTERNATIONAL TRUCK AND ENGINE |
| 01V189006 21 Aug 2001 | FORETRAVEL, INC. |
| 01V189005 6 Aug 2001 | FORETRAVEL, INC. |
| 01V059003 1 Aug 2001 | NOVA BUS INCORPORATED |
NHTSA recalls (public domain) · all recalls of 2001