The defect
LAP AND SHOULDER SEAT BELT ARRANGEMENT FOR FIXED (NON-SUSPENSION) SEATS DOES NOT MEET THE SEAT BELT LOADING REQUIREMENTS OF FMVSS 210. THE INBOARD CLINCH NUT IN CAB SILL, WHERE THE BUCKLE FOR THE SHOULDER AND LAP BELT IS MOUNTED, PULLED OUT OF THE SILL DURING THE TESTS. CONSEQUENCE OF DEFECT: IF SEAT BELT ANCHIRAGE FAILS, THE SEAT OCCUPANT FACES AN INCREASED RISK OF INJURY IN AN ACCIDENT OR SUDDEN STOP.
The remedy
RELOCATE THE INBOARD SEAT BELT MOUNTING FROM TOP OF THE SILL TO THE FORWARD FLANGE OF THE SILL ON THE CAB FLOOR, AND ADD A 3MM FILLET WELD AROUND THE 2 INBOARD CLINCH NUTS.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack CH | 1988, 1989, 1990, 1991 |
| Mack CL | 1988, 1989, 1990, 1991 |
Components: SEAT BELTS:FRONT:ANCHORAGE
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 CH | 1988 | 0 | 6 |
| Mack CH | 1989 | 0 | 7 |
| Mack CH | 1990 | 0 | 5 |
| Mack CH | 1991 | 0 | 5 |
| Mack CL | 1988 | 0 | 2 |
| Mack CL | 1989 | 0 | 2 |
| Mack CL | 1990 | 0 | 2 |
| Mack CL | 1991 | 0 | 2 |
Other seat belts recalls in 1991
21 of the 220 recall campaigns reported to NHTSA in 1991 concerned the seat belts; MACK TRUCKS, INCORPORATED filed 245 campaigns in all.
| 91V206000 26 Nov 1991 | GENERAL MOTORS CORP. |
| 91V202000 18 Nov 1991 | FLEETWOOD ENT., INC. |
| 91V185000 22 Oct 1991 | AMERICAN HONDA MOTOR CO. |
| 91V005000 2 Oct 1991 | GENERAL MOTORS CORP. |
| 91V164000 20 Sept 1991 | SHERROD VANS, INC. |
| 91V143000 4 Sept 1991 | GENERAL MOTORS CORP. |
| 91V122000 11 Jul 1991 | CHRYSLER CORPORATION |
| 91V119000 3 Jul 1991 | VAN CRAFT CORP |
NHTSA recalls (public domain) · all recalls of 1991