The defect
THE SEALANT USED ON THE INJECTION PUMP COULD PENETRATE THROUGH THE BUSHING AND GET BETWEEN THE THROTTLE SHAFT AND BUSHINGS CAUSING THE SHAFT TO BIND. CONSEQUENCE OF DEFECT: THROTTLE SHAFT SEIZURE MAY CAUSE THE ENGINE TO STAY ON FULL THROTTLE, AND RESULT IN LOSS OF OPERATOR CONTROL AND POSSIBLY AN ACCIDENT.
The remedy
REPLACE BOTH BUSHINGS IN THE GOVERNOR HOUSING.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack CS 200 | 1985, 1986 |
| Mack CS 250 | 1985, 1986 |
| Mack MS200 | 1985, 1986 |
| Mack MS250 | 1985, 1986 |
Components: VEHICLE SPEED CONTROL
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack CS 200 | 1985 | 0 | 1 |
| Mack CS 200 | 1986 | 0 | 1 |
| Mack CS 250 | 1985 | 0 | 1 |
| Mack CS 250 | 1986 | 0 | 1 |
| Mack MS200 | 1985 | 0 | 1 |
| Mack MS200 | 1986 | 0 | 1 |
| Mack MS250 | 1985 | 0 | 1 |
| Mack MS250 | 1986 | 0 | 1 |
Other vehicle speed control recalls in 1986
12 of the 173 recall campaigns reported to NHTSA in 1986 concerned the vehicle speed control; MACK TRUCKS, INCORPORATED filed 245 campaigns in all.
| 86V146000 7 Nov 1986 | CHRYSLER CORPORATION |
| 86V132000 2 Oct 1986 | TOYOTA MOTOR CO., LTD. |
| 86V130000 19 Sept 1986 | GENERAL MOTORS CORP. |
| 86V129000 15 Sept 1986 | VOLVO OF AMERICA CORP. |
| 86V110000 12 Aug 1986 | FORD MOTOR COMPANY |
| 86V080000 20 Jun 1986 | BAYERISCHE MOTOREN WERKE |
| 86V079000 16 Jun 1986 | THOMAS BUILT BUSES, INC. |
| 86V076000 10 Jun 1986 | COLLINS INDUSTRIES,INC. |
NHTSA recalls (public domain) · all recalls of 1986