different method of unsiezing a cailpers

[vrooom]

im having problem to remove the piston on outside side cailpers with no holes. the cailpers is cooper S.

so far i tried wd40 and plusgas over night, gas cooker cooking the cailper so expand the metal. and session on vice. still wont budge.

What to do? is it possible to buy cailper other halfs ? companies who do cailper exchange has dried up.

i have removed piston on inside side of cailper sucessfully.

there is about 5mm of piston showing. on siezed side.

What can i do?

[richy123]

push it out with compressed air , block other holes with rubber and g clamp or vice etc, then give it a good blast, wear goggles and put a heavy cloth over piston to catch it , because it will go with a POP and fly out,worked for me.

[GreenV8S]

Plumb it back into the brake circuit and stomp the pedal hard.

[CombeMarshal]

Yeah, conect it back to the brake system.
Oh, and don't use WD40 on seal's it eats them for lunch, but I guess you fitting new ones anyway?

[bigbeard]

Might not work if they are very siezed but I found a tyre foot pump fits over a flared brake pipe pretty well if you don't have a compressor handy.

Cliffe

[lanciachris]

I would recommend pumping the evil thing full of grease rather than air. much more controlled when it moves. kinda messy though