The defect
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH MERITOR AIR BRAKE AUTOMATIC SLACK ADJUSTERS. SOME OF THE AUTOMATIC SLACK ADJUSTERS HAD INSUFFICIENT TORQUE APPLIED TO THE GUIDE PAWL CAP SCREW.
The risk
WITHOUT SUFFICIENT TORQUE ON THE GUIDE PAWL CAP SCREW, THE BRAKES COULD GRADUALLY LOSE ADJUSTMENT, INCREASING THE VEHICLE STOPPING DISTANCE.
The remedy
DEALERS WILL CHECK THE TORQUE ON THE AUTOMATIC SLACK ADJUSTER GUIDE PAWL. IF THERE IS NO TORQUE, THE BRAKES WILL BE ADJUSTED AND THE GUIDE PAWL WILL BE TIGHTENED TO 15-20 FT. LBS.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Volvo AC | 1999 |
| Volvo VN | 1999 |
| Volvo WG | 1999 |
| Volvo WX | 1999 |
Components: SERVICE BRAKES, AIR
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Volvo AC | 1999 | 0 | 1 |
| Volvo VN | 1999 | 9 | 5 |
| Volvo WG | 1999 | 3 | 8 |
| Volvo WX | 1999 | 0 | 10 |
Other service brakes, air recalls in 1999
18 of the 392 recall campaigns reported to NHTSA in 1999 concerned the service brakes, air; VOLVO TRUCKS NORTH AMERICA INC filed 58 campaigns in all.
| 99V352000 14 Dec 1999 | FREIGHTLINER CORPORATION |
| 99V350000 14 Dec 1999 | INTERNATIONAL TRUCK AND ENGINE |
| 99V351000 14 Dec 1999 | INTERNATIONAL TRUCK AND ENGINE |
| 99V082002 9 Dec 1999 | PACCAR, INCORPORATED |
| 99V082001 30 Nov 1999 | WESTERN STAR TRUCKS, INC. |
| 99V331000 23 Nov 1999 | INTERNATIONAL TRUCK AND ENGINE |
| 99V285000 20 Oct 1999 | NEW FLYER OF AMERICA, INC. |
| 99V281000 5 Oct 1999 | PACCAR, INCORPORATED |
NHTSA recalls (public domain) · all recalls of 1999