TOTAL CAPACITY OF AIR BRAKE RESERVOIR MAY BE SLIGHTLY LESS THAN REQUIRED BY FMVSS 121.
TRUCKS WOULD NOT COMPLY WITH STANDARD.
REPAIR TO ASSURE CORRECT TOTAL CAPACITY OF AIR BRAKE RESERVOIRS.
The 1988 Mack Ms300t has 2 NHTSA recall campaigns affecting an estimated 575 vehicles. Recall repairs are always free at any authorized dealer. Last updated July 5, 2026.
TOTAL CAPACITY OF AIR BRAKE RESERVOIR MAY BE SLIGHTLY LESS THAN REQUIRED BY FMVSS 121.
TRUCKS WOULD NOT COMPLY WITH STANDARD.
REPAIR TO ASSURE CORRECT TOTAL CAPACITY OF AIR BRAKE RESERVOIRS.
POWER STEERING PUMPS MAY HAVE A RIDGE INSIDE THE ALUMINUM HOUSING WHICH COULD DETACH ITSELF FROM THE HOUSING AND BECOME WEDGED INSIDE THE RELIEF VALVE, KEEPING IT OPEN.
THIS COULD RESULT IN SUDDEN LOSS OF ASSISTANCE TO THESTEERING WITH THE POTENTIAL FOR AN ACCIDENT.
REPLACE POWER STEERING PUMP.
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1988 Mack Ms300t as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.