Hearth Record

Service brakes, hydraulic: foundation components: master cylinder (Harley-Davidson)

Vehicle equipment recall 80E-012. NHTSA received HARLEY-DAVIDSON MOTOR CO.’s report on Jun 2, 1980.

NHTSA’s own record, on nhtsa.gov

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The short answer

NHTSA received HARLEY-DAVIDSON MOTOR CO.’s report on Jun 2, 1980. Copied from NHTSA on Oct 20, 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.

THERE IS A POSSIBILITY THAT THE USE OF A NON-SPECIFIED MATERIAL IN THE PLASTIC PISTON OF THE MASTER CYLINDER ASSEMBLY MAY ALLOW A GREATER DEGREE OF WATER ABSORPTION THAN INTENDED BY HARLEY DAVIDSON.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 20, 2026. Updated daily.

  • NHTSA’s part: Service brakes, hydraulic: foundation components: master cylinder.

What should you do?

MANUFACTURER WILL INSPECT ALL SUSPECT CYLINDERS DISCOVERED IN DEALER”S PARTS INVENTORIES AND WILL INFORM OWNERS ABOUT REPLACEMENT PROCEDURES.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 20, 2026. Updated daily.

  • How to reach the firm: VEHICLE CATEGORY: MOTORCYCLES.SYSTEM: SERVICE BRAKES; REAR BRAKE MASTER CYLINDER; HARLEY DAVIDSON, PART NO.424 15-79.CONSEQUENCES OF DEFECT: DEPENDING ON THE MOISTURE CONTENT OF THE BRAKE FLUID, APLASTIC PISTON MADE OF THIS NON-SPECIFIED MATERIAL MAY STICK IN THE MASTERCYLINDER PISTON BORE, CAUSING LOSS OF VEHICLE CONTROL AND AN ACCIDENT.

Which ones are recalled?

NHTSA counts 306 items potentially involved, across everything this recall names.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 20, 2026. Updated daily.

  • Harley-Davidson Harley DavidsonBuilt from Aug 1, 1979 to Aug 1, 1979

Who is recalling it?

  • Made by HARLEY-DAVIDSON MOTOR CO..
Source:

NHTSA, Recalls flat file before 2010. Released Oct 20, 2026. Updated daily.

What the record doesn’t say

  • NHTSA’s recall file doesn’t say whether anyone was hurt.
  • Which ones, by part or lot: the recall’s report on NHTSA’s site gives them where the maker did; this file gives part numbers only where its maker listed them.
  • 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 20, 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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