The defect
AN INCORRECT 3/4 INCH BOLT WAS INSTALLED ON RT/RS 450 SUSPENSION.
The risk
THIS BOLT MAY BREAK, CAUSING DISENGAGEMENT OF THE BEAM CONNECTION OF REAR SUSPENSION, RESULTING IN LOSS OF CONTROL, WHICH COULD RESULT IN AN ACCIDENT.
The remedy
RETROFIT CHASSIS WITH 1 INCH BOLTS.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack | 1984, 1985, 1986, 1987, 1988, 1989 |
Components: SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO 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 |
|---|---|---|---|
| Mack | 1984 | 0 | 5 |
| Mack | 1985 | 0 | 7 |
| Mack | 1986 | 2 | 5 |
| Mack | 1987 | 1 | 3 |
| Mack | 1988 | 4 | 1 |
| Mack | 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