There have been 10 safety recalls for the Mack U Series. 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 U Series.
| Recalled Vehicles: 1988 Mack CH, 1989 Mack CH, 1988 Mack Dm Series, 1989 Mack Dm Series, 1988 Mack R Series, 1989 Mack R Series, 1988 Mack Rd Series, 1989 Mack Rd Series, 1988 Mack U Series, 1989 Mack U Series |
| Component: STEERING:WHEEL AND HANDLE BAR |
| Recall Summary: Steering wheel retaining nuts may have been improperly installed and/or torqued. ... Details of this recall 🔎 |
Under certain conditions, hose could fail resulting inloss of power steering assist and possibly an accident.
| Recalled Vehicles: 1987 Mack Dm Series, 1988 Mack Dm Series, 1987 Mack Dmm Series, 1988 Mack Dmm Series, 1987 Mack R Series, 1988 Mack R Series, 1987 Mack Rd Series, 1988 Mack Rd Series, 1987 Mack Rm Series, 1988 Mack Rm Series, 1987 Mack Rw Series, 1988 Mack Rw Series, 1987 Mack U Series, 1988 Mack U Series |
| Component: STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS |
| Recall Summary: An incorrect high pressure power steering hose may have been installed. ... Details of this recall 🔎 |
This would allow the pitman arm to come off the steeringgear sector shaft and result in immediate loss of steering control and a vehiclecrash could occur.
| Recalled Vehicles: 1988 Mack Dm Series, 1988 Mack Dmm Series, 1988 Mack R Series, 1988 Mack Rd Series, 1988 Mack Rm Series, 1988 Mack U Series |
| Component: STEERING:LINKAGES |
| Recall Summary: Some of the nuts/bolts used to fasten the steering pitman arm may loosen. ... Details of this recall 🔎 |
If clamp plate breaks, yoke would fly off at detachedpoint and could injury anyone struck by flying fragments. Also, the detachedinner shaft could interfere with the brake system air supply hoses and tractortires, which could result in loss of truck control and an accident.
| Recalled Vehicles: 1988 Mack Dm Series, 1988 Mack Dmm Series, 1988 Mack R Series, 1988 Mack Rd Series, 1988 Mack Rm Series, 1988 Mack U Series |
| Component: POWER TRAIN:DRIVELINE:CENTER SUPPORT BEARING |
| Recall Summary: Clamp plates used between the drive shaft and carrier yokes may crack and could break due to improper heat treatment. ... Details of this recall 🔎 |
Such failure could cause loss of truck control withoutprior warning and result in a crash.
| Recalled Vehicles: 1987 Mack CF, 1987 Mack Dm Series, 1987 Mack MH, 1987 Mack Mr Series, 1987 Mack Rd Series, 1987 Mack Rs Series, 1987 Mack Rw Series, 1987 Mack U Series |
| Component: STEERING:LINKAGES |
| Recall Summary: Cross steering levers may be improperly heat treated and subject to fail during normal operation. ... Details of this recall 🔎 |
| Date | Component | Vehicle Affected |
|---|---|---|
| May. 22, 1989 | Steering:wheel And Handle Bar | 16,000 |
| Mar. 3, 1989 | Steering:hydraulic Power Assist:hose, Piping, And Connections | 3,127 |
| Jul. 27, 1988 | Steering:linkages | 6,400 |
| May. 23, 1988 | Power Train:driveline:center Support Bearing | 203 |
| Nov. 23, 1987 | Steering:linkages | 323 |
| Mar. 22, 1984 | Steering:wheel And Handle Bar | 4,393 |
| Mar. 2, 1982 | Steering:wheel And Handle Bar | 22 |
| Jul. 8, 1981 | Service Brakes, Air:controls:hand Control | 10,000 |
| May. 6, 1980 | Parking Brake:driveline:air | 9,666 |
| May. 6, 1980 | Steering:gear Box (other Than Rack And Pinion) | 109 |
| Model | # Recalls |
|---|---|
| 1989 Mack U Series | 1 |
| 1988 Mack U Series | 4 |
| 1987 Mack U Series | 2 |
| 1984 Mack U Series | 1 |
| 1983 Mack U Series | 1 |
| 1982 Mack U Series | 1 |
| 1981 Mack U Series | 1 |
| 1980 Mack U Series | 4 |
| 1979 Mack U Series | 3 |
| 1978 Mack U Series | 1 |
| 1977 Mack U Series | 1 |
| 1976 Mack U Series | 1 |