RecallMyCar

1974 Mack R Recalls, Complaints & Specs

6 safety recalls list the 1974 Mack R. Check your own VIN below.

6
safety recalls
0
owner complaints to NHTSA

6 safety recalls for the 1974 Mack R

Most recent first. Recall repairs are free at any authorised dealer. Click a recall for the full defect, consequence and remedy text.

  1. Arm (steering)

    NHTSA 78V171000 Reported 2,100 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Deficiencies, in the form of forging laps, cracks and excessive decarburization during heat treatment, exist in the steering knuckles. Stresses imposed with integral hydraulic power steering may lead to a failure in the area of the steering arm attaching boss. This type of failure would cause loss of steering control.

    Remedy: Dealer will inspect and, if necessary, replace the left steering knuckle with an improved type of knuckle.

  2. Service brakes, air: control unit/module

    NHTSA 78V068000 Reported 9,700 vehicles potentially affected MACK TRUCKS, INCORPORATED

    An axle "no brake" condition could result from an eaton controller internal electrical malfunction. This condition may cause the anti-wheel lock valve solenoid to be continuously energized and prevent the brakes from being applied on one of the axles. As a result, the anti-wheel lock warning lamp is not activated.

    Remedy: The dealer will inspect and, if necessary, replace the anti-wheel lock controller without charge to owner.

  3. Fan (engine and engine cooling)

    NHTSA 77V173000 Reported 48,000 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The flex blade fans on the involved vehicles may develop cracks in the laminated stiffener as a result of fatigue during operation. If such a condition exists and the cracks go undetected, continued operation could cause pieces of the stiffener to break off.

    Remedy: Dealer will replace the original fan with a steel fixed blade fan, free of charge.

  4. Interconnecting assembly(wiring) (service brakes)

    NHTSA 75V190000 Reported 3,400 vehicles potentially affected MACK TRUCKS, INCORPORATED

  5. Hoses, lines/piping, and fittings (service brakes)

    NHTSA 75V192000 Reported 1,200 vehicles potentially affected MACK TRUCKS, INCORPORATED

  6. Switch (exterior lighting)

    NHTSA 74V227000 Reported 1,023 vehicles potentially affected MACK TRUCKS, INCORPORATED

No owner complaints on file

NHTSA has no owner complaints on file for the 1974 Mack R. For context, the average model year in NHTSA's database has dozens; a zero can mean a reliable vehicle, a rare one, or both.

Compare Mack R model years

Recall and complaint counts for every Mack R model year in NHTSA's database.

Model yearRecallsComplaints
1965 Mack R10
1966 Mack R10
1967 Mack R20
1968 Mack R30
1969 Mack R50
1970 Mack R50
1971 Mack R90
1972 Mack R70
1973 Mack R90
1974 Mack R60
1975 Mack R60
1976 Mack R40
1977 Mack R100
1978 Mack R60
1979 Mack R30
1982 Mack R10
1983 Mack R10
1984 Mack R10
1987 Mack R10
1988 Mack R10
1989 Mack R30
1990 Mack R20
1991 Mack R10
1992 Mack R10

Checking a specific 1974 Mack R

How do I know if my 1974 Mack R has an open recall?

Enter your 17-character VIN above. The VIN is on the driver's side dashboard (visible through the windshield), the driver's door jamb sticker, and your registration or insurance card. The check runs against NHTSA's live database and tells you which campaigns list your vehicle. 6 campaigns currently list the 1974 Mack R; your car may already have been repaired under some of them.

Is the recall repair free?

Yes. Under federal law, manufacturers must fix safety recalls at no charge for vehicles up to 15 years old from the date of sale to the first owner. Contact any authorised Mack dealer with your VIN and the NHTSA campaign number (for example 74V227000).

What is the difference between a recall and a complaint?

A recall is a safety campaign filed by the manufacturer or ordered by NHTSA, with a defined defect and remedy. A complaint is a report an owner sent to NHTSA; it is not verified, but patterns of complaints are what trigger NHTSA investigations and, eventually, recalls.

Other Mack models

Source: NHTSA recall and complaint databases and EPA fuel economy data, October 2026. Complaint counts are owner reports to NHTSA, not verified defects. Recall counts are safety campaigns that list this model year; whether a particular car was already repaired depends on its VIN. How this data is compiled.