Vehicle recall 76V177000 · November 8, 1976

Mack DM400 and DM600

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

Notes: Mack truck campaign no SCO80.TRUCKS equipped with FA616, 617, 618 or 619NARROW-pivot center front axles.possibility the steering gear lever wasinstalled one tooth "out of time" with relation to steering gear sector shaftmarkings.this condition does not create a safety hazard except if removal ofsteering gear for repair and timing is aligned to manufacturer's specificationwhen reinstalled.if this occurs, an interference could exist between draglink and steering arm on steering knuckle resulting in possible completefailure of drag link with complete loss of steering without prior warning todriver.(correct by inspecting and repositioning drag link clamp and relocatesteering arm to align the timing marks).heavy truck.

Recall details

NHTSA campaign: 76V177000
Reported to NHTSA: November 8, 1976
Filed by: MACK TRUCKS, INCORPORATED
Owner notification: March 14, 1977
Vehicles potentially affected: 739
Initiated by: the manufacturer
Components: Steering › Linkages

Recall 76V177000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Mack DM400 (1975-1976): 1976, 1975
Mack DM600 (1975-1976): 1976, 1975

Has your Mack been repaired?

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