RecallMyCar

Mack RS Recalls & Complaints by Model Year

NHTSA lists 27 safety recalls and 0 owner complaints across 14 model years of the Mack RS (1966–1979).

27
safety recalls, all years
0
owner complaints, all years
1971
year with most recalls

Pick your Mack RS model year

Model yearRecallsComplaints
1979 Mack RS30
1978 Mack RS50
1977 Mack RS70
1976 Mack RS40
1975 Mack RS70
1974 Mack RS70
1973 Mack RS20
1972 Mack RS40
1971 Mack RS80
1970 Mack RS50
1969 Mack RS40
1968 Mack RS30
1967 Mack RS10
1966 Mack RS10

All Mack RS recalls (27)

Every NHTSA safety campaign that lists a Mack RS, most recent first, with the model years each one covers.

  1. Leaf spring assembly (suspension)

    NHTSA 79V171000 Reported 1,706 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The spring seat plate, located between the axle housing and the suspension springs, may deform due to spring bending. As a result, the clamping force in the assembly may be reduced. Loss of clamping force could cause spring failure and the axle will dislocate. Also, the tire could come into contact with the spring.

    Remedy: The dealer will replace the existing spring seat with a newly fabricated seat which is welded to the housing. An improved spring clamping plate and new springs will also be installed without charge.

    Model years: 1979

  2. Steering wheel/handle bar (steering)

    NHTSA 79V164000 Reported 4,640 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The flange head pinch bolts used in the yokes of the steering shaft assemblies may have been overstressed due to the bolts not being tightened to specifications. As a result, the pinch bolts could break while in service.

    Remedy: Flange head pinch bolts will be replaced with standard grade 8 fasteners without charge to owner.

    Model years: 1979

  3. Engine (engine and engine cooling)

    NHTSA 79V133000 Reported 23,000 vehicles potentially affected MACK TRUCKS, INCORPORATED

    In the event of turbocharger compressor wheel failure, one or more of the four capscrews that hold the turbocharger together may be struck by parts of the compressor wheel, resulting in the capscrews being damaged. If these capscrews are damaged to the point that they allow the compressor back plate to dislocate from the turbocharger…

    Remedy: Dealer will install a shield for the heads of the four capscrews, along with stronger sae 8 grade 8 capscrews, if necessary, at no cost to owner.

    Model years: 1977, 1978, 1979

  4. Steering wheel/handle bar (steering)

    NHTSA 79V134000 Reported 64,150 vehicles potentially affected MACK TRUCKS, INCORPORATED

    In the involved trucks it is possible the adjustable steering column rear mounting bracket could fail, allowing steering wheel assembly to fall down onto the operator"s lap.

    Remedy: Dealer will install an additional bracket in this area to prevent the steering wheel from dislocating in the event of a bracket failure.

    Model years: 1974, 1975, 1976, 1977, 1978

  5. Electrical system: wiring

    NHTSA 78V222000 Reported 161 vehicles potentially affected MACK TRUCKS, INCORPORATED

    A short circuit could occur due to chafing or wire disconnection in the box.

    Remedy: The wiring in the sleeper box will be corrected, free of charge.

    Model years: 1977, 1978

  6. Interconnecting assembly(wiring) (service brakes)

    NHTSA 78V210000 Reported 19,370 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Delays of up to about 2 seconds may exist in the brake application times to the brakes on the bogie axles in the presence of certain types of wheel speed sensor signal discontinuities or distortions that may occur as a result of sensor wire failure. This constitutes a non-compliance to federal motor vehicle safety standard no. 121, "air…

    Remedy: Dealer will install new wheel speed sensors that incorporate improved wiring and the present bogie anti-wheel lock system will be changed to an axle-to-axle system for improved reliability.

    Model years: 1977, 1978

  7. 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.

    Model years: 1974, 1975, 1976

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

    NHTSA 78V030000 Reported 400 vehicles potentially affected MACK TRUCKS, INCORPORATED

    A design deficiency exists in the air dryer piping in the area of the pressure relief valve and compressor governor control link. Moisture is passed and builds up in this relief valve and control line. In freezing ambient temperatures, this moisture may freeze, allowing the chassis air system pressure to exceed 150 PSI. Excessive air…

    Remedy: The dealer will relocate the air system compressor governor line and pressure relief valve to eliminate moisture accumulation.

    Model years: 1975, 1976, 1977, 1978

  9. Hanger/bracket (suspension)

    NHTSA 77V205000 Reported 7,400 vehicles potentially affected MACK TRUCKS, INCORPORATED

    A deficiency exists in the welds securing the rear spring insulator bracket to the axle housing. This is due to improper positioning of the weld, in relationship to the bracket and axle housing. Failure of the welds would cause separation of the spring insulator bracket and the axle housing, resulting in improper alignment of the…

    Remedy: Dealer will reweld the insulator spring bracket at no cost to owner.

    Model years: 1977

  10. Multi piece (wheels)

    NHTSA 77V149000 Reported 250 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The front wheel aluminum hubs on the involved vehicles may be subject to cracks which may progress circumferentially around the barrel of the hub. This could lead to a fracture in the "barrel" position of the hub and complete hub failure.

    Remedy: Dealer will install steel hubs in place of aluminum hubs without charge to owner.

    Model years: 1976, 1977

  11. Wheel speed sensor (service brakes)

    NHTSA 76V006000 Reported 350 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1975

  12. Check valve (service brakes)

    NHTSA 75V141000 Reported 935 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1974, 1975

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

    NHTSA 75V139000 Reported 110 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1975

  14. Electrical system: wiring

    NHTSA 75V070000 Reported 132 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1973, 1974, 1975

  15. Drum (service brakes)

    NHTSA 75V060000 Reported 600 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1974

  16. Lugs/nuts/bolts/studs (wheels)

    NHTSA 74V228000 Reported 654 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1974

  17. Banjo housing (power train)

    NHTSA 74V032000 Reported 9,019 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1971, 1972

  18. Rim (wheels)

    NHTSA 73V205000 Reported 40 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1974

  19. Horn (electrical system)

    NHTSA 73V153000 Reported 1,285 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1971, 1972, 1973

  20. Shock absorber (suspension)

    NHTSA 72V310000 Reported 132 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1969, 1970, 1971, 1972

  21. Suspension: rear

    NHTSA 72V259000 Reported 1,755 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1966, 1967, 1968, 1969, 1970, 1971, 1972

  22. Fuel injection system (fuel system)

    NHTSA 72V127000 Reported 1,410 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1970, 1971

  23. Linkages (steering)

    NHTSA 72V126000 Reported 668 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1971

  24. Hubcap/cover (wheels)

    NHTSA 71V226000 Reported 238 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1970, 1971

  25. Horn (electrical system)

    NHTSA 71V131000 Reported 2,630 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1969, 1970, 1971

  26. Brake lights (exterior lighting)

    NHTSA 69V088000 Reported 4,212 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1968, 1969

  27. Structure

    NHTSA 68V083000 Reported 67 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1968

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.