Seat belts: front: anchorage (Mack)
Vehicle recall 77V-174. NHTSA received MACK TRUCKS, INCORPORATED’s report on Oct 12, 1977.
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The short answer
NHTSA received MACK TRUCKS, INCORPORATED’s report on Oct 12, 1977. Copied from NHTSA on Oct 27, 2026.
Every line below is in NHTSA’s own words, with its source beside it.
What’s wrong with it?
The notice gives no hazard in a field of its own.
THE INVOLVED VEHICLES DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 209, “SEATBELT ASSEMBLIES”.
ALTHOUGH THE SEATBELTS IN QUESTION PERFORMED MARGINALLY WITH RESPECT TO THE 5000 LB.
LOAD REQUIREMENT, ADDITIONAL TESTING CONFIRMED THAT THE ANCHOR COULD FAIL, ALLOWING EITHER THE ANCHOR TO SLIP OVER THE HOLD-DOWN NUT OR THE ANCHOR TO SEPARATE INTO TWO PIECES.
NHTSA, Recalls flat file before 2010. Released Oct 27, 2026. Updated daily.
- NHTSA’s part: Seat belts: front: anchorage.
What should you do?
DEALER WILL INSPECT AND, IF NECESSARY, REPLACE SEAT BELT ASSEMBLIES WITHOUT CHARGE TO OWNER.
NHTSA, Recalls flat file before 2010. Released Oct 27, 2026. Updated daily.
- How to reach the firm: VEHICLE DESCRIPTION: TRUCKS.SYSTEM: INTERIOR; SEAT BELT ANCHORAGE ASSEMBLY.CONSEQUENCES OF DEFECT: IN THE EVENT OF AN ACCIDENT, THESE SEAT BELTS MAY NOTADEQUATELY RESTRAIN PASSENGERS AND SERIOUS INJURIES MAY RESULT.
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 6,591 vehicles potentially involved, across everything this recall names.
NHTSA, Recalls flat file before 2010. Released Oct 27, 2026. Updated daily.
- Mack DMand 1977, before the model years listed here
- Mack Fand 1977, before the model years listed here
- Mack CFand 1977, before the model years listed here
- Mack HMMand 1977, before the model years listed here
- Mack DMMand 1977, before the model years listed here
- Mack RDand 1977, before the model years listed here
- Mack Rand 1977, before the model years listed here
- Mack Uand 1977, before the model years listed here
- Mack RMand 1977, before the model years listed here
Who is recalling it?
- Made by MACK TRUCKS, INCORPORATED.
NHTSA, Recalls flat file before 2010. Released Oct 27, 2026. Updated daily.
What the record doesn’t say
- NHTSA’s recall file doesn’t say whether anyone was hurt.
- Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
- This recall names only model years before 2015, which have no pages here. Your VIN, at NHTSA, says which recalls are open on a vehicle.
- How many have been returned or fixed isn’t in the notice.
Hearth Record wrote these lines.
Sources
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National Highway Traffic Safety Administration, Recalls flat file before 2010 (FLAT_RCL_PRE_2010).
Released Oct 27, 2026 and checked Oct 27, 2026. Updated daily. Public domain (U.S. Government work).
Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 27, 2026.