The 1966 Mack Mack has 2 NHTSA recall campaigns affecting an estimated 31,040 vehicles. Recall repairs are always free at any authorized dealer. Last updated July 5, 2026.
B,C,G,H,F,MB,R AND U MODELS EQUIPPED WITH SWDL56 SERIES BOGIE S.POSSIBILITYTHAT ALUMINUM SPRING CAP USED TO HOLD SPRING M AY DEVILOP CRACKS WHICH COULDPERMIT CAP TO FAIL AND ALLOW SPR ING TO SEPARATE FROM AXLE.(CORRECT BYINSPECTING AND REPLACI NG CAP WITH IRON CAP.)
POSSIBILITY THAT CLEVIS, WHICH IS PART OF LINKAGE THROUGH WHICH FRAME- MOUNTED AUXILIARY SPRING BRAKES ARE APPLIED, MAY FAIL DUE TO CLEVIS MATERIAL NOT MEETING MATERIAL AND CASTING QUALITY SPECIFICATIONS.FAILURE OF CLEVIS COULD INTERFERE WITH AUXILIARY BRAKE APPLICATION, AND CREATE HAZARD UNDER CERTAIN OPERATING…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1966 Mack Mack as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.