THE REAR BRAKE FREE TRAVEL ADJUSTING BOLT AND NUT INSTALLED DURING VEHICLE ASSEMBLY MAY HAVE BEEN INCORRECTLY TIGHTENED. THIS COULD CAUSE THE BRAKE PEDAL TO BECOME JAMMED DURING BRAKE OPERATION.
Manufacturer remedy
DEALER WILL INSPECT AND, IF NECESSARY, ADJUST AND TIGHTEN THE JAMNUTS.
Service brakes, hydraulic: foundation components: master cylinder
Manufacturer
HARLEY-DAVIDSON MOTOR CO.
Vehicles affected
342
Reported to NHTSA
1978-07-19
Owners notified
1978-08-11
Defect description
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.
Manufacturer remedy
DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE FRONT BRAKE MASTER CYLINDER ASSEMBLY AT NO COST TO OWNER.
SOME OF THESE VEHICLES WERE MANUFACTURED WITH WEAK REAR BRAKE CONTROL INNER LEVER ARM AND PIVOT SHAFTS. AS A RESULT, EXCESSIVE PRESSURE WILL BE NEEDED ON THE BRAKE PEDAL TO STOP THE VEHICLE.
Manufacturer remedy
THE DEALER WILL REPLACE EXISTING LEVER ARMS AND PIVOT SHAFTS WITH REINFORCED ONES.
Owner complaints
A complaint is one person's report to a federal agency. It is not a finding.
No complaints recorded for this model year.
Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.