The 1981 Mack Mr Series has 2 NHTSA recall campaigns affecting an estimated 3,646 vehicles. Recall repairs are always free at any authorized dealer. Last updated July 5, 2026.
SPRING SEAT CAN DEFORM, WHICH CAUSES A DECREASE IN THE CLAMPING FORCE IN THE SUSPENSION ASSEMBLY. LOSS OF CLAMPING FORCE MAY BRING ABOUT AXLE MISALIGNMENT OR AXLE HOUSING FAILURE.
THE AXLE HOUSING WILL BE INSPECTED AND REPLACED, IF NECESSARY. THE SPRING SEATS WILL ALSO BE REPLACED.
THE PITMAN ARM RETAINING BOLT MAY NOT HAVE BEEN TIGHTENED TO THE REQUIRED SPECIFICATIONS DUE TO A DESIGN CHANGE. INADEQUATE RETENTION OF THE BOLT TO THE OUTPUT SHAFT COULD ALLOW THE PITMAN ARM TO LOOSEN.
THE DEALER WILL INSPECT AND, IF NECESSARY, RETORQUE THE RETAINING BOLT TO PROPER SPECIFICATIONS AT NO CHARGE.
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1981 Mack Mr Series as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.