The defect
LEFT OR RIGHT CAB STEP MAY CRACK IN ITS WELDED AREA DUE TO FLEXING OF THE STEP DURING ENTERING AND EXITING. CONSEQUENCE OF DEFECT: AS THE CRACKS EXTEND, THE TUBULAR STEP COULD PARTIALLY COLLAPSE AND BREAK WITHOUT WARNING TO THE USER, AND COULD RESULT IN PERSONAL INJURIES.
The remedy
INSTALL A REINFORCEMENT BRACE IF NO CRACKS ARE FOUND. IN ADDITION, REPLACE STEP IF CRACKS ARE PRESENT.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack MH | 1982, 1983, 1984, 1985, 1986 |
Components: STRUCTURE
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 | 1982 | 0 | 7 |
| Mack MH | 1983 | 0 | 8 |
| Mack MH | 1984 | 0 | 9 |
| Mack MH | 1985 | 0 | 5 |
| Mack MH | 1986 | 0 | 3 |
Other structure recalls in 1986
7 of the 173 recall campaigns reported to NHTSA in 1986 concerned the structure; MACK TRUCKS, INCORPORATED filed 245 campaigns in all.
| 86V002000 2 Dec 1986 | AUTOMATIC EQUIP. MFG. CO. |
| 86V118000 26 Aug 1986 | FREIGHTLINER CORP. |
| 86V107000 5 Aug 1986 | ALLOY TRAILERS,INC |
| 86V100000 28 Jul 1986 | THEURER INC. |
| 86V089000 11 Jul 1986 | VOLVO GM HEAVY TRUCK CORP |
| 86V011000 28 Jan 1986 | FREIGHTLINER CORP. |
NHTSA recalls (public domain) · all recalls of 1986