The defect
THE AIR COMPRESSOR AIR SUPPLY LINE IS ROUTED FROM THE COMPRESSOR OVER THE TOP OF THE FRAME RAIL, UNDER THE BRAKE HYDROMAX, AND DOWN TO THE AIR SYSTEM. THIS LINE CAN CONTACT THE STEEL SECTION OF THE HYDROMAX HYDRAULIC SUPPLY LINE, CAUSING A LEAK TO OCCUR IN THE HYDRAULIC LINE, ALLOWING HYDRAULIC FLUID TO LEAK ON THE LEFT FRONT WHEEL AND BRAKE ASSEMBLY.
The risk
THE LEAK ALLOWS ENOUGH FLUID TO BE PUMPED FROM THE SYSTEM TO ELIMINATE POWER STEERING ASSIST. THE ELECTRONIC SECONDARY BRAKE PUMP WILL ENGAGE, BUT THE LEAK WILL RESULT IN INCREASED STOPPING DISTANCE.
The remedy
DEALERS WILL INSTALL A CUSHION CLIP ON THE TOP LEFT FRAME RAIL SEPARATING AND ELIMINATING ANY CONTACT BETWEEN THE STEEL JACKETED AIR LINE AND THE METAL SECTION OF THE HYDRAULIC LINE.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Oshkosh MB18FD | 1993, 1994 |
Components: SERVICE BRAKES, AIR:SUPPLY
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 MB18FD | 1993 | 0 | 2 |
| Oshkosh MB18FD | 1994 | 0 | 2 |
Other service brakes, air recalls in 1994
6 of the 244 recall campaigns reported to NHTSA in 1994 concerned the service brakes, air; OSHKOSH TRUCK CORPORATION filed 62 campaigns in all.
| 94V002000 5 Oct 1994 | PACCAR, INCORPORATED |
| 94V153000 11 Aug 1994 | FRUEHAUF CORPORATION |
| 94V089000 10 May 1994 | BLUE BIRD BODY COMPANY |
| 94V020000 4 Feb 1994 | MOTOR COACH IND., INC. |
| 94V011000 21 Jan 1994 | BLUE BIRD BODY COMPANY |
NHTSA recalls (public domain) · all recalls of 1994