pink
1st Class Ticket
Posts: 65 
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Post by pink on Aug 5, 2016 7:01:12 GMT
Hi guys. Hoping someone may be able to point me in right direction. The caliper on my disc brake seems really tight, it's almost impossible to free roll the wheel. I've bled the brakes and when on they stop nicely but pushing the scoot is back braking due to the tight front wheel. I'm guessing the caliper has locked the brakes partially on, maybe seized up. Any idea how I can release the caliper so it operates correctly.?
Many thanks in anticipation.
Pink
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Post by henri on Aug 5, 2016 7:09:50 GMT
sometimes if you get it off ,might need to lever pads back to free it.then work pistons in an out a few times they free off . but mostly when seized if free'd they will tend to stick again . new pads will move pistons back to a free movement area ,but as soon as there worn to were present pads/piston is will tend to stick again .
not many places are willing to sell seal kits anymore ,in case ya get it wrong n sue em ,most just replace a knackered caliper with new .H
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pink
1st Class Ticket
Posts: 65
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Post by pink on Aug 5, 2016 7:29:01 GMT
Cheers H. I'll give the maintenance option a go first, in short term, then replace caliper.
Pink
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Post by phattanglo on Aug 5, 2016 9:01:26 GMT
If you feel comfortable having a go yourself it's pretty straight forward to dismantle the caliper. Use the brake lever to pump the pistons out completely not forgetting to keep a bowl under the caliper to catch the fluid and then split the caliper. The seals will probably be fine. Gently take them out and clean the gunge out of the recess they sit in. Use a scotch pad to clean the piston and the bore and rinse with fresh brake fluid. Pop the seals back in, lubricate the bores with brake fluid and push the pistons back in they should go in with just finger pressure. Bolt the 2 halves of the caliper back together not forgetting the little o ring that goes between them.
All this can be done without disturbing the brake pipe, you just have to re-mount the caliper and bleed the brakes.
Personally I would fit new pads unless I knew the old ones were hardly worn.
Don't forget your surgical gloves when working with brake fluid and protect your paintwork.
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Post by baldmeister on Aug 5, 2016 11:29:43 GMT
if you have put new pads on, take them off and really clean the are that they rub on in the caliper , also make sure the hole on the pads is free of paint. this cured mine.
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