The defect
FRONT AXLE AIR BRAKE LINES ARE ROUTED TOO CLOSE TO THE ENGINE EXHAUST MANIFOLD. THIS CAN PERMIT BRAKE LINES TO MELT AND RUPTURE, CAUSING A REDUCTION IN AIR PRESSURE TO BRAKE CHAMBERS UPON BRAKE APPLICATION.
The remedy
FRONT AXLE AIR BRAKE LINES WILL BE REPLACED, EMPLOYING NEW ROUTING AND HEAT RESISTANCE IMPROVEMENTS.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Western RWL Series | 1981, 1982, 1983, 1984 |
| Western RWS Series | 1981, 1982, 1983, 1984 |
Components: SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Western RWL Series | 1981 | 0 | 5 |
| Western RWL Series | 1982 | 0 | 2 |
| Western RWL Series | 1983 | 0 | 2 |
| Western RWL Series | 1984 | 0 | 2 |
| Western RWS Series | 1981 | 0 | 5 |
| Western RWS Series | 1982 | 0 | 2 |
| Western RWS Series | 1983 | 0 | 2 |
| Western RWS Series | 1984 | 0 | 2 |
Other service brakes, air recalls in 1984
10 of the 164 recall campaigns reported to NHTSA in 1984 concerned the service brakes, air; MACK TRUCKS, INCORPORATED filed 245 campaigns in all.
| 84V126000 11 Oct 1984 | PACCAR, INCORPORATED |
| 84V120000 2 Oct 1984 | GENERAL MOTORS CORP. |
| 84V114000 25 Sept 1984 | FREIGHTLINER CORP. |
| 84V117000 24 Sept 1984 | CHRYSLER CORPORATION |
| 84V081000 9 Jul 1984 | FREIGHTLINER CORP. |
| 84V076000 19 Jun 1984 | PACCAR, INCORPORATED |
| 84V061000 18 May 1984 | GENERAL MOTORS CORP. |
| 84V035000 23 Mar 1984 | MACK TRUCKS, INCORPORATED |
NHTSA recalls (public domain) · all recalls of 1984