Dowels may have been omitted during spring cap installation; this would put shear load on the four (4) spring cap bolts.
1987-1988 · 2 model years
Mack DMM Series Problems by year
Owners have filed 0 complaints about the Mack DMM Series across 2 model years, and it has 5 recalls.
- Complaints
- 0
- Recalls
- 5
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
DMM 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 DMM Series recalls 5
An incorrect high pressure power steering hose may have been installed.
Certain engine support castings were produced with faulty metallurgy and could fail.
Some of the nuts/bolts used to fasten the steering pitman arm may loosen.
Clamp plates used between the drive shaft and carrier yokes may crack and could break due to improper heat treatment.
Questions about the Mack DMM Series
How many recalls does the Mack DMM Series have?
NHTSA lists 5 recalls across all Mack DMM 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