The defect
REAR BRAKE RELAY VALVE CONTROL LINE WAS CONNECTED TO THE SECONDARY DOUBLE CHECK VALVE, RATHER THAN THE PRIMARY ONE. CONSEQUENCE OF DEFECT: THESE TRUCKS HAVE A TWO AXLE BRAKE SYSTEM EACH ON SEPARATE SYSTEMS TO AVOID TOTAL LOSS OF BRAKES. HOWEVER WITH THE MISCONNECTED LINES AND IF A RUPTURE OR LEAK OCCURS IN THE CONTROL LINE, THE FRONT AND REAR AXLE BRAKES WILL FAIL.
The remedy
PROPERLY CONNECT CONTROL LINE TO THE PRIMARY DOUBLE CHECK VALVE. RECHECK FOR PROPER OPERATION OF FRONT BRAKES.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Freightliner | 1983, 1984, 1985 |
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 |
|---|---|---|---|
| Freightliner | 1983 | 0 | 4 |
| Freightliner | 1984 | 0 | 7 |
| Freightliner | 1985 | 2 | 5 |
Other service brakes, air recalls in 1985
11 of the 173 recall campaigns reported to NHTSA in 1985 concerned the service brakes, air; FREIGHTLINER CORP. filed 116 campaigns in all.
| 85V171000 26 Dec 1985 | BLUE BIRD BODY COMPANY |
| 85V170000 23 Dec 1985 | OSHKOSH TRUCK CORPORATION |
| 85V150000 19 Nov 1985 | OSHKOSH TRUCK CORPORATION |
| 85V148000 15 Nov 1985 | TRANSPORTATION MFG. CORP. |
| 85V113000 17 Sept 1985 | MACK TRUCKS, INCORPORATED |
| 85V085000 2 Jul 1985 | GENERAL MOTORS CORP. |
| 85V074000 6 Jun 1985 | VOLVO GM HEAVY TRUCK CORP |
| 85V063000 14 May 1985 | NEOPLAN USA CORP. |
NHTSA recalls (public domain) · all recalls of 1985