rear brake caliper piston boot(seal)

stephen

Active Member
Dec 4, 2018
82
10
went to change my rear disc and pads and noticed on the passenger side the seal around the piston is out around the caliper side of the seal

so question is, how hard is it to reseat the boot?


any help would be great
don't want the problem getting worse. the seal doesn't seem to be split, doesnt mean its not mind
 

380bhpdaily

Active Member
May 26, 2020
1,261
574
You have to remove the piston and then put the dust cover over the piston and slide it down the base of the piston and then push the dust cover into the groove the the piston goes in then you can seat the piston into the caliper and then wind it back in all the way. You’ll have to bleed the brakes after.
This is the way I do it however the only times I’ve done this is when I’m rebuilding the caliper using new parts. But the process is the same.
 
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380bhpdaily

Active Member
May 26, 2020
1,261
574
Yes mate either that or take the cable off the hand brake arm and use a spanner on the nut to swing the hand brake mech on the caliper the piston will plop right out. Have you got a wind back tool tho?
 
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stephen

Active Member
Dec 4, 2018
82
10
Yes mate either that or table the cable off the hand brake arm and use a spanner on the nut to swing the hand brake mech on the caliper the piston will plop right out. Have you got a wind back tool tho?

yea i do
it came with a left hand and right hand
so clock and anti clock
 
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380bhpdaily

Active Member
May 26, 2020
1,261
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yea i do
it came with a left hand and right hand
so clock and anti clock
Also before you do anything just try to undo the bleed nipple on the caliper make sure you can undo it for when you have to bleed it. I’ve made this mistake before and rebuilt the caliper only to find the bleed nipple stripped it’s threads
 
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