How many recalls does the 1974 Mack Hmm6856s have?

The 1974 Mack Hmm6856s has 1 NHTSA safety recall campaign on record.

How do I check if my 1974 Mack Hmm6856s has an open recall?

Enter your 17-character VIN at NHTSA's official recall lookup (nhtsa.gov/recalls) to see open, unrepaired recalls for your specific vehicle. Recall repairs are free.

1974 Mack Hmm6856s Recalls

Recalls on record Updated July 2026

The 1974 Mack Hmm6856s has 1 NHTSA recall campaign affecting an estimated 100 vehicles. Recall repairs are always free at any authorized dealer. Last updated July 5, 2026.

Recall campaigns

STEERING 78V028000 1978-02-09 100 affected

Defect

THE STEERING PITMAN ARM IS SUBJECT TO FAILURE AT THE AREA OF THE TRANSITION TO THE ARM OFFSET DUE TO HIGH STRESS CONCENTRATIONS.

Remedy

DEALER WILL REPLACE THE STEERING PITMAN ARM, STEERING GEAR OUTPUT SHAFT AND STEERING GEAR MOUNTING BRACKET.

Sources & methodology

Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1974 Mack Hmm6856s as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.