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Recall campaign04V171000

Recall 04V171000: 1998–2004 MAC Trailer

Equipment › Mechanical
Report received
Apr 8, 2004
Manufacturer
Mac trailer mfg., inc.
Potentially affected
310vehicles
Model years
1998–2004

Check your own vehicle. A recall applies only to vehicles within the affected build range. Enter your VIN at nhtsa.gov/recalls. Recall repairs are free at a franchised dealer.

What NHTSA recorded

On certain frame and frameless dump trailers, the 8-inch five stage telescopic cylinder commonly referred to as a "super dump", with use the packing nut on the fourth stage retaining the plunger can loosen, backing off the fourth stage. This condition, if not remedied, can continue until the packing nut backs completely off the stage. If this occurs, there is nothing to retain the fifth stage (plunger) in the assembly.

Possible consequence

When the cylinder is extended to its maximum stroke, the fifth stage can separate from the cylinder assembly causing loss of control over the trailer, allowing the trailer to free fall, possibly causing serious injury or death.

Remedy

Parker hannifin will provide a field modification kit #375 1805 206 to secure the packing nut in position free of charge. Owners who do not receive the free remedy within a reasonable time should contact parker hannifin at 1-888-231-7461 or mac trailer at 330-823-9190.

Affected model years

Pages for each model year show complaints, parts, mileage and other recalls.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.