Hearth Record

Service brakes, hydraulic: power assist (Mercedes Benz)

Vehicle recall 77V-055. NHTSA received MERCEDES-BENZ USA, INC.’s report on Apr 19, 1977.

NHTSA’s own record, on nhtsa.gov

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The short answer

NHTSA received MERCEDES-BENZ USA, INC.’s report on Apr 19, 1977. 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.

AN AIR LEAK COULD DEVELOP THROUGH THE PISTON SHAFT SEAL RING WHICH SEALS THE INSIDE OF THE BRAKE BOOSTER FROM THE ATMOSPHERE.

THIS COULD RESULT IN A REDUCTION IN BRAKE BOOSTER ASSIST, NECESSITATING INCREASED BRAKE PEDAL PRESSURE.

Source:

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

  • NHTSA’s part: Service brakes, hydraulic: power assist.

What should you do?

DEALER WILL REPLACE THE DEFECTIVE SEAL WITH AN IMPROVED VERSION AT NO CHARGE TO OWNER.

Source:

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

  • How to reach the firm: VEHICLE DESCRIPTION: TRUCKS.SYSTEM: SERVICE BRAKES; PISTON SHAFT SEAL.CONSEQUENCES OF DEFECT: BRAKE MALFUNCTION, REQUIRING AN INCREASE IN BRAKE PEDALPRESSURE, COULD CAUSE LOSS OF VEHICLE CONTROL AND AN ACCIDENT.
  • Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.

Which ones are recalled?

NHTSA counts 449 vehicles potentially involved, across everything this recall names.

Source:

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

  • Mercedes Benz L1116and 1975 and 1976, before the model years listed here
  • Mercedes Benz L1113and 1975 and 1976, before the model years listed here

Who is recalling it?

  • Made by MERCEDES-BENZ USA, INC..
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.

From the homeNone yet. Replies and paid listings aren’t open, and when they open they will sit here, below the record.

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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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