- The problem
- Vehicle description: heavy duty class 8 trucks equipped with fontaine fifth wheel assemblies. The fifth wheel mounting plates can crack.
- The risk
- Under the trailer loading, the mounting plate could eventually fail due to fatigue.
- The fix
- Dealers will inspect and replace the mounting plates that are cracked.
Vehicle safety record
1993 Mack CH Problems, complaints & recalls
No owner complaints about the 1993 Mack CH have been filed with NHTSA. It is covered by 5 recalls, the latest in May 2000 for the fifth wheel assembly.
NHTSA data checked
CAbout as many problems as a typical CH year, for its age
- Complaints
- 0
- Recalls
- 5
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
1993 Mack CH recalls 5
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
- The problem
- Air system blockage in the air dryer occurs degrading the moisture removing capabilities of the dryer when the vehicle is operated in a cold environment and moisture accumulates and freezes in the air dryer or in the line between the dryer and the air system reservoir. The air dryer can become overpressurized causing the air dryer cartridge to separate from the mounting base.
- The risk
- If the air dryer separates from the base, the cartridge can separate sufficiently enough to cause personal injury or property damage.
- The fix
- Dealers will equip air systems with a pressure relief valve to be located between the compressor and the air dryer. This pressure relief valve is intended to vent if excessive pressure develops in the air dryer.
- The problem
- The driveshaft center bearing support bracket can crack and break.
- The risk
- If this happens, the driveshaft will wobble and can separate. Separation can result in damage to other components of the vehicle or loose fragments can fall onto the roadway presenting a hazard to other drivers.
- The fix
- Dealers will replace the center bearing hanger bracket.
- The problem
- The engine cooling fan blades may break due to inadequate blade strength around the rivets that attach the blades to the fan spider.
- The risk
- If complete fracture of the fan blade occurs, it couldbe propelled outside the fan shroud, injuring person(s) in the vicinity ofthe truck.
- The fix
- An improved fan will be installed on these vehicles.
- The problem
- The carrier yoke bolts were manufactured with worn rolling thread dies, causing stress concentrations which caused cracks during the quenching process.
- The risk
- This condition can cause bolt failure and allow thedriveline to separate from the carrier assembly.
- The fix
- REPLACE THE CARRIER YOKE BOLTS.
What owners say
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No complaints about the 1993 Mack CH yet
No owner has filed a complaint about this vehicle with NHTSA. If yours has a problem, share it here and report it to NHTSA.
Mack CH: every year compared
All CH years1993 Mack CH vs rivals
| Vehicle | Complaints | Recalls | Grade | |
|---|---|---|---|---|
| 1993 Mack CH | 0 | 5 | C | |
| 1993 Mack Mack | 1 | 0 | A | Compare |
More sales usually means more complaints, so compare similar vehicles of the same year. The grade compares each vehicle with its own model's other years.
Questions about the 1993 Mack CH
Does the 1993 Mack CH have any recalls?
Yes - NHTSA lists 5 recalls for the 1993 Mack CH: fifth wheel assembly (May 2000); hoses, lines / piping, and fittings (June 1995); center support bearing (November 1994); fan (August 1993) and more. Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
How many complaints has the 1993 Mack CH had?
None have been filed with NHTSA so far.
Is the 1993 Mack CH a reliable vehicle?
Its Safety Index is 50 out of 100 (grade C: about as many problems as a typical Mack CH year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
Which Mack CH years have the most complaints?
2002 (2), 1992 (1), 1994 (1). See every Mack CH year compared.
What should I do if my 1993 Mack CH has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data