RecallMyCar

Mack Mb Recalls & Complaints by Model Year

NHTSA lists 16 safety recalls and 0 owner complaints across 15 model years of the Mack Mb (1965–1979).

16
safety recalls, all years
0
owner complaints, all years
1971
year with most recalls

Pick your Mack Mb model year

Model yearRecallsComplaints
1979 Mack Mb10
1978 Mack Mb30
1977 Mack Mb40
1976 Mack Mb20
1975 Mack Mb40
1974 Mack Mb40
1973 Mack Mb30
1972 Mack Mb40
1971 Mack Mb50
1970 Mack Mb30
1969 Mack Mb20
1968 Mack Mb20
1967 Mack Mb20
1966 Mack Mb10
1965 Mack Mb10

All Mack Mb recalls (16)

Every NHTSA safety campaign that lists a Mack Mb, 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. Hanger/bracket (suspension)

    NHTSA 79V018000 Reported 17 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The steel brackets on the suspension beam were found to be deficient due to excessive shrinkage and low mechanical properties. Failure of one or both of these brackets could cause a separation of the axle housing from the suspension.

    Remedy: The dealer will inspect and, if necessary, replace any suspect bogie spring insulator caps with new caps meeting the proper specifications at no cost to owner.

    Model years: 1978

  3. 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

  4. 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.

    Model years: 1971, 1972, 1973, 1974

  5. Arm (steering)

    NHTSA 78V172000 Reported 13,800 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The existing cross steering arms may have insufficient fatigue life in the neck area. This is near the boss for the cross steering tube ball joint connection. Failure of either of the cross steering levers could lead to loss of steering control of the right front wheel.

    Remedy: The dealer will inspect and, if necessary, install cross steering arms of improved design and greater strength.

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

  6. 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

  7. 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

  8. Wheels

    NHTSA 77V096000 Reported 825 vehicles potentially affected MACK TRUCKS, INCORPORATED

    The front wheel rim clamp studs, installed on the involved vehicles, may not have been manufactured correctly, causing a brittle condition in the thread root area. The studs could eventually crack and break when wheel nuts are tightened to specifications.

    Remedy: The dealer will replace all suspect front wheel studs, without charge to owner.

    Model years: 1977

  9. Leaf (suspension)

    NHTSA 76V004000 Reported 54 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1975

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

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

    Model years: 1975

  11. Multiple axle (suspension)

    NHTSA 75V118000 Reported 414 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1967, 1968, 1969, 1970, 1971, 1972, 1973

  12. Connection (steering)

    NHTSA 74V120000 Reported 1,776 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1965, 1966, 1967

  13. Structure

    NHTSA 74V101000 Reported 48 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1972, 1973, 1974

  14. Banjo housing (power train)

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

    Model years: 1971, 1972

  15. Hubcap/cover (wheels)

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

    Model years: 1970, 1971

  16. Carburetor system (fuel system)

    NHTSA 71V179000 Reported 15,002 vehicles potentially affected MACK TRUCKS, INCORPORATED

    Model years: 1968, 1969, 1970, 1971

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.