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AnyRecalls

1977 Mack RS recalls

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

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

For the 1977 Mack RS. 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 RS recalls, newest first

May 31, 1979NHTSA 79V13300023,000 vehicles potentially affected

Engine and engine cooling › Engine

Summary
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 bearing housing, engine lubricating oil may be allowed to escape under pressure, contacting the engine exhaust manifold sections or turbocharger turbine housing.
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.

This recall on nhtsa.gov

May 30, 1979NHTSA 79V13400064,150 vehicles potentially affected

Steering › Steering wheel/handle bar

Summary
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.

This recall on nhtsa.gov

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

February 9, 1978NHTSA 78V030000400 vehicles potentially affected

Service brakes, air › Supply › Hoses, lines/piping, and fittings

Summary
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 system pressure can cause separation of air piping connections and air system valve failure.
Remedy
The dealer will relocate the air system compressor governor line and pressure relief valve to eliminate moisture accumulation.

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

September 19, 1977NHTSA 77V149000250 vehicles potentially affected

Wheels › Multi piece

Summary
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.

This recall on nhtsa.gov

Owner complaints

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

Other Mack RS years

Other 1977 Mack models

Questions

Does the 1977 Mack RS have any recalls?
7 recalls found in NHTSA data as of September 22, 2026, covering: engine and engine cooling, steering, electrical system, service brakes, air, 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 RS 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 RS?
0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.