Spring seat can deform, which causes a decrease in the clamping force in the suspension assembly. Loss of clamping force may bring about axle misalignment or axle housing failure.
1978-1984 · 7 model years
Mack MC Series Problems by year
Owners have filed 0 complaints about the Mack MC Series across 7 model years, and it has 6 recalls.
- Complaints
- 0
- Recalls
- 6
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
MC Series complaints by model year
Highlighted: the year with the most complaints for its age. Older vehicles have had more time to collect complaints - the Safety Index grade allows for that.
Mack MC Series recalls 6
Improper steering clamp bolts and torque applied during installation. The bolt could fail, allowing the steering yoke to become loose.
The pitman arm retaining bolt may not have been tightened to the required specifications due to a design change. Inadequate retention of the bolt to the output shaft could allow the pitman arm to loosen.
The retaining pin for the brake control knob has been misaligned (off the center line of the valve plunger hole). This causes the knob to be overstressed at the retaining pin hole area causing it to separate from the valve.
The right hand front canopy cab mounting bracket interferes with the right hand brake chamber on the steering axle when in a certain degree turn and severe bumping is present.
On certain vehicles, the knob that operates the tractor park valve may break off, rendering the valve inoperable.
Questions about the Mack MC Series
Which Mack MC Series years have the fewest complaints?
How many recalls does the Mack MC Series have?
NHTSA lists 6 recalls across all Mack MC Series model years. Each year's page lists the recalls for that year; check your own vehicle by VIN at nhtsa.gov/recalls to see whether the repair has been done.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data