Honda VT750DC ACE
Task #29 - Front Brake Disc Inspection & Limits
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Service Interval and Recommended Maintenance Manual
Visually inspect the disc for damage and cracks.
Measure the thickness of the disc at several points.
SERVICE LIMIT: 5mm (0.2 in)
Replace the brake disc if the smallest measurement is
less then 5 mm.
Check the brake disc for warpage using a dial indicator
while rotating the front wheel.
SERVICE LIMIT: 0.30mm (0.012in)
If you get more the 0.30mm deflection, then first check
the front wheel bearings for excessive play. If the
bearings appear fine, then replace the brake disc.