Hearth Record

Power train: driveline (Mack)

Vehicle recall 81V-089. NHTSA received MACK TRUCKS, INCORPORATED’s report on Jul 14, 1981.

NHTSA’s own record, on nhtsa.gov

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The short answer

NHTSA received MACK TRUCKS, INCORPORATED’s report on Jul 14, 1981. Copied from NHTSA on Oct 28, 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.

HOLES DRILLED IN THE REAR AXLE YOKES TO BALANCE THEM COULD CAUSE A FAILURE OF THE YOKE.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.

  • NHTSA’s part: Power train: driveline.

What should you do?

VEHICLES WILL BE INSPECTED AND ALL DEFECTIVE YOKES WILL BE REPLACED WITH YOKES WITHOUT HOLES.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.

  • How to reach the firm: VEHICLE DESCRIPTION: TRUCKS.SYSTEM: SUSPENSION; REAR AXLE YOKE.CONSEQUENCES OF DEFECT: THE YOKE COULD FAIL WITHOUT WARNING DURING VEHICLEOPERATION, POSSIBLY CAUSING LOSS OF VEHICLE CONTROL AND AN ACCIDENT. ALSO, THEFAILURE COULD CAUSE SHRAPNEL TO BE PROPELLED OUTWARD FROM THE VEHICLE, INJURINGANYONE WITHIN CLOSE PROXIMITY.NOTE: THE FAILURE IS MOST LIKELY TO OCCUR WHEN THE VEHICLE IS FIRST STARTED ORWHILE DRIVING AT MODERATE OR HIGH SPEEDS IN A HEAVY TORQUE CONDITION.
  • Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.

Which ones are recalled?

NHTSA counts 500 vehicles potentially involved, across everything this recall names.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.

  • Mack MS300Tand 1980 and 1981, before the model years listed here
  • Mack MS300Pand 1980 and 1981, before the model years listed here

Who is recalling it?

  • Made by MACK TRUCKS, INCORPORATED.
Source:

NHTSA, Recalls flat file before 2010. Released Oct 28, 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.
Source:

Hearth Record wrote these lines.

Sources

Source:

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 28, 2026.

How to read a record

Four things every record does, shown on an example record made up for this guide.

An example record, made up for this guide

An example nursing home

Made up for this guide: no real place is shown

Not fully inspected in over two years (CMS flag)

11 health citations at the latest inspection cycle

The state average is 14.3.

Source:

CMS, State and US Averages and Health Deficiencies. Released Oct 28, 2026. Updated monthly.

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Every fact names its source.

Who published it, when, and how often it changes sit beside each fact, with a link to the agency’s own file.

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