Front Master Cylinder 83 GS750T

[kgrant]

Folks, Front Master cylinder seems to have the piton stuck. I tried using air hose to push the piston back the other way but no luck. Is there a way to actually remove this piston from the master cylinder? I found a replacement piston from Bike Bandit but cannot figure out how to remove the existing. Any thoughts??

Keith G.

[cowboyup3371]

It looks similar to the one I used to have which will have the brake line on the front of it. If so, I think someone else will be able to give you better advice. If it is to the side then you should be able to take a small screwdriver in from the brake line hole and push out. Otherwise, lots of PB might be in your future.

[DPage]

There is a metal circlip that keeps the piston in the bore. Remove it with snap ring pliers, the best one is from Mikesxs, part # 35-009, $10. Called Right angle snap ring pliers.

[BassCliff]

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[bobthebiker88]

once you've removed the little circlip, removal is a lot easier. if you cannot get the piston out, or to even move, I would just replace the whole master, and not mess with rebuilding.

a stuck piston in the caliper usually means additional damage and that the bore is FUBAR.

[jhicok]

bob is normally right.. mine was the same and i tried anyways.. i let the whole thing soak completely submerged in acetone over night. with the circlip removed i grabbed the piston with some pliars and it came out. i kept it for reference on how the new one should be assembled. be sure to clean out the little pin hole on the inside bottom really good!! mine worked out fine and hope the same to you.