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NHTSA Campaign 78V159000

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

Issued by HARLEY-DAVIDSON MOTOR CO. · Reported Jul 19, 1978 · 342 vehicles affected

What's wrong

THE INVOLVED MOTORCYCLES WERE MANUFACTURED WITH FRONT BRAKE MASTER CYLINDERS IN WHICH THE PLUNGER PISTON BORE DIAMETER WAS HONED .015 INCHES OVER MAXIMUM SPECIFICATIONS. THIS OVERSIZED BORE RESULTS IN A POOR FIT BETWEEN THE ELASTOMERIC PISTON CUP AND THE CYLINDER BORE, WHICH ALLOWS FLUID LEAKAGE FROM THE HYDRAULIC SYSTEM.

Remedy

DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE FRONT BRAKE MASTER CYLINDER ASSEMBLY AT NO COST TO OWNER.

Vehicles affected by this recall

Make Model Year Units
HARLEY-DAVIDSON FLH1200 1978 342
HARLEY-DAVIDSON FLH80 1978 342
HARLEY-DAVIDSON FX1200 1978 342
HARLEY-DAVIDSON FXE1200 1978 342
HARLEY-DAVIDSON FXS1200 1978 342
HARLEY-DAVIDSON XLCH1000 1979 342
HARLEY-DAVIDSON XLH1000 1979 342

Source: NHTSA Campaign 78V159000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.