help with front brakes
Thread Starter
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Tourer
Joined: Nov 2007
Posts: 397
Likes: 1
help with front brakes
i cracked a front rotor and replaced the rotor. the cracked rotor messed up the front calipler so i had to rebuild it. the problem now is i can not get the front master cyclender to pump up. it worked fine before i have pulled a vacum rebuilt the thing and also tried pumping the fluid back up to the master cyclender from the calipar still no luck. im stumped as to why it wont work when it was working fine before. any ideals as to what might be the problem.
thanks
thanks
Road Master
Joined: Jan 2011
Posts: 855
Likes: 6
From: Riverside, Ca.
i cracked a front rotor and replaced the rotor. the cracked rotor messed up the front calipler so i had to rebuild it. the problem now is i can not get the front master cyclender to pump up. it worked fine before i have pulled a vacum rebuilt the thing and also tried pumping the fluid back up to the master cyclender from the calipar still no luck. im stumped as to why it wont work when it was working fine before. any ideals as to what might be the problem.
thanks
thanks
Thread Starter
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Tourer
Joined: Nov 2007
Posts: 397
Likes: 1
its on my wifes 90 softail singel disc 5/8 bore . i no this is not the right forum but this is the one i hang out in.
again thanks for the help im stumped as to what to try next other than a new one. but like i said it worked fine before
again thanks for the help im stumped as to what to try next other than a new one. but like i said it worked fine before
Ultimate HDF Member
Joined: Sep 2006
Posts: 5,535
Likes: 15
From: Salem, Va.
Sometimes it takes a while to get it to pump up. I have had the same problem on differant bikes. Try taking the caliper off again and with the piston side pad use a c-clamp to fully compress the caliper piston. Hold the piston in with clamp and pump it up and bleed it. It should pump up. The master cylinder has such a short stroke it is not moving a lot of fluid. Hope this helps.
Tourer
Joined: Feb 2008
Posts: 369
Likes: 8
From: North Okanagan, BC
Sometimes it takes a while to get it to pump up. I have had the same problem on differant bikes. Try taking the caliper off again and with the piston side pad use a c-clamp to fully compress the caliper piston. Hold the piston in with clamp and pump it up and bleed it. It should pump up. The master cylinder has such a short stroke it is not moving a lot of fluid. Hope this helps.
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Tourer
Joined: Nov 2007
Posts: 397
Likes: 1
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Grand HDF Member
Joined: Oct 2010
Posts: 4,618
Likes: 290
From: Johnstown, PA
Try bleeding it at the banjo bolt first, then move on to the bleeder valve. That has worked for me in the past when I had a stubborn brake.
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Thread Starter
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Tourer
Joined: Nov 2007
Posts: 397
Likes: 1
here is the up date. pulled the calipar of the piston was still closed. pulled the brake lines off blowed air through them to make sure they wernt cloged. took master cyclinder back apart. put it back together. with my finger over the hole i slowly pumped short strokes just enough to see air bubbles. and then it wont bubble anymore there was no presure on my finger. ive taped the handel slightly pulled in with the bleeder open and leting it sit. also tried taping on the bottom of master cyclinder to see if any more bubbles come up.
maybe its time for a new one
maybe its time for a new one