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1977 Mack MB recalls

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

4 recalls found in NHTSA data as of September 22, 2026

For the 1977 Mack MB. These apply to the model and year, not to one particular vehicle: check your VIN to see whether yours is included and whether it has been repaired.

Has your Mack been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.

1977 Mack MB recalls, newest first

October 3, 1978NHTSA 78V21000019,370 vehicles potentially affected

Service brakes, air › Antilock › Interconnecting assembly(wiring)

Summary
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 brake systems".
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.

This recall on nhtsa.gov

August 8, 1978NHTSA 78V17200013,800 vehicles potentially affected

Steering › Linkages › Knuckle › Spindle › Arm

Summary
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.

This recall on nhtsa.gov

November 21, 1977NHTSA 77V2050007,400 vehicles potentially affected

Suspension › Rear › Springs › Leaf spring assembly › Hanger/bracket

Summary
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 affected axle.
Remedy
Dealer will reweld the insulator spring bracket at no cost to owner.

This recall on nhtsa.gov

June 17, 1977NHTSA 77V096000825 vehicles potentially affected

Wheels

Summary
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.

This recall on nhtsa.gov

Owner complaints

No owner complaints about the 1977 Mack MB were found in NHTSA’s complaint data.

Other Mack MB years

Other 1977 Mack models

Questions

Does the 1977 Mack MB have any recalls?
4 recalls found in NHTSA data as of September 22, 2026, covering: service brakes, air, steering, suspension, wheels. Recalls apply to the model and year; whether a particular vehicle is included, and whether it has been repaired, depends on its VIN.
How do I check if my 1977 Mack MB recall has been fixed?
Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Mack dealer. Recall repairs are free. NHTSA's VIN search doesn't list recalls that were already repaired.
How many complaints have owners filed about the 1977 Mack MB?
0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.