The defect
THESE TRUCKS WERE EQUIPPED WITH DEFECTIVE HYDRAULIC PRESSURE SWITCHES IN THE LOAD SPAN TAG SYSTEM. WHEN A MALFUNCTION IN THIS SYSTEM OCCURS, AXLE TO PAVEMENT PRESSURE INCREASES WHEN VEHICLE IS OPERATED IN AN UNLOADED CONDITION.
The remedy
THE EXISTING CONTROL SWITCH WILL BE REPLACED WITH A THREE-POSITION SWITCH WHICH, BY USE OF A NEUTRAL POSITION, WILL PREVE NT PRESSURE BUILDUP. A NEW OPERATION LABEL WILL ALSO BE INCLUDED.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Oshkosh B Series | 1981, 1982, 1983, 1984 |
| Oshkosh S-Series | 1981, 1982, 1983, 1984 |
Components: SUSPENSION:MULTIPLE AXLE
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Oshkosh B Series | 1981 | 0 | 2 |
| Oshkosh B Series | 1982 | 0 | 2 |
| Oshkosh B Series | 1983 | 0 | 2 |
| Oshkosh B Series | 1984 | 0 | 1 |
| Oshkosh S-Series | 1981 | 0 | 1 |
| Oshkosh S-Series | 1982 | 0 | 1 |
| Oshkosh S-Series | 1983 | 0 | 3 |
| Oshkosh S-Series | 1984 | 0 | 4 |
Other suspension recalls in 1984
13 of the 164 recall campaigns reported to NHTSA in 1984 concerned the suspension; OSHKOSH TRUCK CORPORATION filed 62 campaigns in all.
| 84V159000 20 Dec 1984 | FREIGHTLINER CORP. |
| 84V153000 28 Nov 1984 | GENERAL MOTORS CORP. |
| 84V142000 7 Nov 1984 | MACK TRUCKS, INCORPORATED |
| 84V121000 5 Oct 1984 | DOLPHIN RV PRODUCTS INC. |
| 84V118000 1 Oct 1984 | PREVOST CAR, INCORPORATED |
| 84V104000 6 Sept 1984 | FORD MOTOR COMPANY |
| 84V089000 14 Aug 1984 | GRUMMAN ALLIED IND., INC. |
| 84V070000 1 Jun 1984 | VOLVO GM HEAVY TRUCK CORP |
NHTSA recalls (public domain) · all recalls of 1984