There have been 19 safety recalls for the Mack MH. The most recent recalls are shown below. Table 1 and Table 2 show the historical recalls and the recall statistics by the model year of the Mack MH.
In the event the primary throttle return fails, failure of the secondary throttle return system would not provide protection against loss of throttle control.
| Recalled Vehicles: 1987 Mack CF, 1988 Mack CF, 1989 Mack CF, 1990 Mack CF, 1991 Mack CF, 1992 Mack CF, 1987 Mack CH, 1988 Mack CH, 1989 Mack CH, 1990 Mack CH, 1991 Mack CH, 1992 Mack CH, 1987 Mack CHR, 1988 Mack CHR, 1989 Mack CHR, 1990 Mack CHR, 1991 Mack CHR, 1992 Mack CHR, 1987 Mack CL, 1988 Mack CL, 1989 Mack CL, 1990 Mack CL, 1991 Mack CL, 1992 Mack CL, 1987 Mack DM, 1988 Mack DM, 1989 Mack DM, 1990 Mack DM, 1991 Mack DM, 1992 Mack DM, 1987 Mack DMM, 1988 Mack DMM, 1989 Mack DMM, 1990 Mack DMM, 1991 Mack DMM, 1992 Mack DMM, 1987 Mack FDM, 1988 Mack FDM, 1989 Mack FDM, 1990 Mack FDM, 1991 Mack FDM, 1992 Mack FDM, 1987 Mack MC, 1988 Mack MC, 1989 Mack MC, 1990 Mack MC, 1991 Mack MC, 1992 Mack MC, 1987 Mack MH, 1988 Mack MH, 1989 Mack MH, 1990 Mack MH, 1991 Mack MH, 1992 Mack MH, 1987 Mack MHR, 1988 Mack MHR, 1989 Mack MHR, 1990 Mack MHR, 1991 Mack MHR, 1992 Mack MHR, 1987 Mack MR, 1988 Mack MR, 1989 Mack MR, 1990 Mack MR, 1991 Mack MR, 1992 Mack MR, 1987 Mack R, 1988 Mack R, 1989 Mack R, 1990 Mack R, 1991 Mack R, 1992 Mack R, 1987 Mack RB, 1988 Mack RB, 1989 Mack RB, 1990 Mack RB, 1991 Mack RB, 1992 Mack RB, 1987 Mack RD, 1988 Mack RD, 1989 Mack RD, 1990 Mack RD, 1991 Mack RD, 1992 Mack RD, 1987 Mack RM, 1988 Mack RM, 1989 Mack RM, 1990 Mack RM, 1991 Mack RM, 1992 Mack RM, 1987 Mack RW, 1988 Mack RW, 1989 Mack RW, 1990 Mack RW, 1991 Mack RW, 1992 Mack RW, 1987 Mack U, 1988 Mack U, 1989 Mack U, 1990 Mack U, 1991 Mack U, 1992 Mack U |
| Component: VEHICLE SPEED CONTROL |
| Recall Summary: Fuel injection system reconfiguration to comply with engine emission standards cause higher engine vibration levels which lead to early wear and complete failure of the secondary throttle return mechanism. ... Details of this recall 🔎 |
This condition can cause bolt failure and allow thedriveline to separate from the carrier assembly.
| Recalled Vehicles: 1992 Mack CH, 1993 Mack CH, 1992 Mack CL, 1993 Mack CL, 1992 Mack DM, 1993 Mack DM, 1992 Mack MH, 1993 Mack MH, 1992 Mack MR, 1993 Mack MR, 1992 Mack RB, 1993 Mack RB, 1992 Mack RD, 1993 Mack RD, 1992 Mack RM, 1993 Mack RM |
| Component: TRAILER HITCHES |
| Recall Summary: The carrier yoke bolts were manufactured with worn rolling thread dies, causing stress concentrations which caused cracks during the quenching process. ... Details of this recall 🔎 |
Bolt failure could allow the rear axle to shift; thiscould adversely affect truck control and could result in a crash.
| Recalled Vehicles: 1989 Mack MH, 1989 Mack R Series, 1989 Mack Rw Series |
| Component: SUSPENSION:FRONT |
| Recall Summary: Torque rod bolts are grade 2 instead of grade 5, which is not to specification, and could fail. ... Details of this recall 🔎 |
This could result in loosening and failure of the boltswith possible loss of control and accident potential.
| Recalled Vehicles: 1988 Mack Dm Series, 1988 Mack Dmm Series, 1988 Mack MH, 1988 Mack Rd Series, 1988 Mack Rw Series |
| Component: SUSPENSION:REAR:SPRINGS |
| Recall Summary: Dowels may have been omitted during spring cap installation; this would put shear load on the four (4) spring cap bolts. ... Details of this recall 🔎 |
Incorrect length belt may not properly restrain occupantand would not comply with fmvss 210.
| Recalled Vehicles: 1987 Mack MH, 1988 Mack MH |
| Component: SEAT BELTS:REAR |
| Recall Summary: Seat tether belt 11. 0 inches long was installed instead of the 8. 5 inches long belt required for this chassis. ... Details of this recall 🔎 |
| Date | Component | Vehicle Affected |
|---|---|---|
| Feb. 15, 1994 | Vehicle Speed Control | 39,777 |
| Feb. 16, 1993 | Trailer Hitche | 4,924 |
| May. 15, 1989 | Suspension:front | 100 |
| Mar. 3, 1989 | Suspension:rear:springs | 152 |
| Feb. 21, 1989 | Seat Belts:rear | 19 |
| Sep. 6, 1988 | Seat Belt | 11,000 |
| Dec. 14, 1987 | Steering:linkages | 29 |
| Nov. 23, 1987 | Steering:linkages | 323 |
| Oct. 26, 1987 | Steering:linkages | 200 |
| Jan. 17, 1986 | Structure | 7,000 |
| Sep. 17, 1985 | Air Brake | 5,020 |
| May. 3, 1985 | Steering:linkages:link:drag:connection | 52 |
| May. 1, 1985 | Structure:body:bumpers | 7,500 |
| Nov. 7, 1984 | Trailer Hitches:fifth Wheel Assembly | 64 |
| Nov. 7, 1984 | Latches/locks/linkages:doors:latch | 1,300 |
| Nov. 7, 1984 | Suspension:front:springs:leaf Spring Assembly | 2,198 |
| Mar. 23, 1984 | Service Brakes, Air:supply:check Valve | 850 |
| Mar. 22, 1984 | Steering:wheel And Handle Bar | 4,393 |
| Sep. 27, 1983 | Steering:wheel And Handle Bar | 507 |
| Model | # Recalls |
|---|---|
| 1993 Mack MH | 1 |
| 1992 Mack MH | 2 |
| 1991 Mack MH | 1 |
| 1990 Mack MH | 1 |
| 1989 Mack MH | 2 |
| 1988 Mack MH | 4 |
| 1987 Mack MH | 6 |
| 1986 Mack MH | 3 |
| 1985 Mack MH | 5 |
| 1984 Mack MH | 9 |
| 1983 Mack MH | 8 |
| 1982 Mack MH | 7 |