ninjette.org - View Single Post - Weird observation, hoping someone knows a fix

jkv45 · April 16th, 2014, 11:06 AM

Probably need a rebuild of the caliper or master cylinder. The bore in the caliper could be bad, or the piston seals may be old and hard.

You could remove the caliper and clean around the piston seals for starters. There may be a build-up of fluid and brake dust that's restricting the movement of the piston when cold.

April 16th, 2014, 11:06 AM	#29
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	Probably need a rebuild of the caliper or master cylinder. The bore in the caliper could be bad, or the piston seals may be old and hard. You could remove the caliper and clean around the piston seals for starters. There may be a build-up of fluid and brake dust that's restricting the movement of the piston when cold.