Vehicle recall 78V042000 · March 1, 1978

1978 Harley-Davidson 1200 Super Glide

The clamping bolt washer on the left and right front brake caliper assembly could crack due to exposure to hydrogen.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary: The clamping bolt washer on the left and right front brake caliper assembly could crack due to exposure to hydrogen. (these washers were incorrectly processed, causing them to become brittle and break).
Remedy: The dealer will replace the washer in the front brake caliper at no charge.
Notes: Vehicle description: motorcycles.system: service brakes; clamping bolt washer (left and right).consequences of defect: if a loose bolt condition goes unnoticed, the caliperbolt could loosen enough to contact the wheel spokes. The resulting wheel orbrake damage could cause loss of vehicle control and an accident.

Recall details

NHTSA campaign: 78V042000
Reported to NHTSA: March 1, 1978
Filed by: HARLEY-DAVIDSON MOTOR CO.
Owner notification: March 29, 1978
Vehicles potentially affected: 3,438
Initiated by: the manufacturer
Components: Service brakes, hydraulic › Foundation components › Disc › Caliper

Recall 78V042000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Harley-Davidson 1200 Super Glide (1978): 1978

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