Removing Brake Caliper Pistons

[Houdini]

Any of y'all have a brilliant method of removing caliper pistons?  Their not stuck, just been in there for 16 years and I figured I might as well replace the seals before putting them back on the bike.

I figured I could mount them and pump them up with fluid but I really don't want the extra work and wasted fluid going that route.  I have a compressor but not a rubber nozzle but if anyone has successfully used a compressor I would hit AutoZone ASAP.

TYIA

[DLSSOJC]

I have used an air compressor before and it worked like a charm. 

[saddlesore]

I used compressed air too.  I used an air gun with a cone shaped, rubber end. It worked great but don't use your finger to catch the piston. Yeah, I learned the hard way.    

[BnB Tom]

  Wonder who was riding a black Valk with black valve covers
                               going north on K ave. around 5:15 Tuesday afternoon

[Houdini]

 Wonder who was riding a black Valk with black valve covers
                               going north on K ave. around 5:15 Tuesday afternoon

Not me BnB, both my scooters have been incapacitated for over a week now. I pulled the caliper off of my standard and put it on my IS, it fits but doesn't 'feel' right so I won't ride it.  My rebuild kit arrived yesterday so I can finally get the replacement IS caliper rebuilt and the standard caliper back on.

[CDuster]

I have used compressed air on Cleveland Aircraft calipers many times, no problems. I havn't had to do it on Valk calipers yet but I see no difference.

[CDuster]

Houdini, It sounds like you might have air in the brake lines giving you a soft feel. I always fill my brakes from the bottom by pumping the fluid into the bleed fitting. It eliminates the air-in-the-lines  problem. Something you might try.

[franco6]

bleed the calipers then when off the bike apply brakes ,be prepared to to stuff rags or news paper around the piston as there will be  leakage .

[Houdini]

Thanks franco6, I forgot to update this thread; after buying a rubber cone shaped tip I used my compressor and a couple of c-clamps to control the pistons as they came out.  One caliper the pistons popped right out, the second one had a piston that refused to come out and took me about 30 minutes to get out.  After rebuilding I used the mighty-vac to bleed it and my gal is back on the road.