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On 16 Dec 2002 at 7:04, michael mcginnis wrote: > I'm not being negative towards anyone, but I was removing stuck > pistons once and with 1 piston out we blocked the hole with a clamp > and something(I don't remember what). We applied compressed air to > the caliper. Nothing happened and just when I was going to give up, > the piston came out. It hit the opposite side of the caliper and then > flew approx 25 feet and hit the tool box. I had a similar experience when I was first doing this. I agree, opening them with compressed air IS DANGEROUS. I was always worried about losing a finger when one came out explosively. I don't use compressed air any more. For the last 25 years I've used water. That's right. I pump them full of water and bleed them so there is no air in them, then pump up the water pressure. The first time I did this I was amazed: NO POP, NO explosion. The piston just pushed slowly out of the caliper and dropped free. It's almost a disappointment. Of course you have to remove the water when you're done, but once they are apart you can wash with soap and water, rinse well with water and then alcohol, and then let them dry. Grease would work the same way, but water drys completely and doesn't harm the metal or rubber parts. You may want to dry the bores off with a paper towell when you're finished to prevent surface rusting while they're drying, but even that causes no problems if you have a dry area where they can dry quickly. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/