The defect
TORQUE ROD BOLTS ARE GRADE 2 INSTEAD OF GRADE 5, WHICH IS NOT TO SPECIFICATION, AND COULD FAIL.
The risk
BOLT FAILURE COULD ALLOW THE REAR AXLE TO SHIFT; THISCOULD ADVERSELY AFFECT TRUCK CONTROL AND COULD RESULT IN A CRASH.
The remedy
REPLACE TORQUE ROD BOLTS WITH BOLTS OF THE PROPER SPECIFICATION.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack MH | 1989 |
| Mack R series | 1989 |
| Mack RW Series | 1989 |
Components: SUSPENSION:FRONT
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 MH | 1989 | 0 | 2 |
| Mack R series | 1989 | 0 | 2 |
| Mack RW Series | 1989 | 0 | 1 |
Other suspension recalls in 1989
19 of the 234 recall campaigns reported to NHTSA in 1989 concerned the suspension; MACK TRUCKS, INCORPORATED filed 245 campaigns in all.
| 89V236000 26 Dec 1989 | GREAT DANE TRAILERS, INC. |
| 89V228000 5 Dec 1989 | PACCAR, INCORPORATED |
| 89V133000 10 Aug 1989 | PORSCHE CARS N.A. INC. |
| 89V132000 8 Aug 1989 | MOTOR COACH IND., INC. |
| 89V120000 24 Jul 1989 | PREVOST CAR, INCORPORATED |
| 89V123000 24 Jul 1989 | COACHMEN INDUSTRIES, INC. |
| 89V119000 24 Jul 1989 | MACK TRUCKS, INCORPORATED |
| 89V117000 18 Jul 1989 | GREAT DANE TRAILERS, INC. |
NHTSA recalls (public domain) · all recalls of 1989