Vehicle recall 73V102000 · May 4, 1973

Mack DM, R and 1 more model

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

Notes: Equipped with anchorlok spring brake chambers.manf'd JAN.1971 thru MARCH1973.TRUCKS.POSSIBILITY that the clamp ringbolts on the anchorlok springbrake chamber were incorrectly positioned at time of installation.in thisposition the end of the bolt may contact rear axle housing during brakeactuation.due to bracket deflection, the clamp ring or bolt may failpermitting the spring brake section to separate from the service chamber.(correct by inspecting and repositioning clamp and bolts).

Recall details

NHTSA campaign: 73V102000
Reported to NHTSA: May 4, 1973
Filed by: MACK TRUCKS, INCORPORATED
Owner notification: August 24, 1973
Vehicles potentially affected: 2,481
Initiated by: the manufacturer
Components: Service brakes, air

Recall 73V102000 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 DM (1971-1973): 1973, 1972, 1971
Mack R (1971-1973): 1973, 1972, 1971
Mack RD (1971-1973): 1973, 1972, 1971

Has your Mack been repaired?

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