Stuck caliper and master cylinder piston

[agedatc]

Hey guys. I'm starting a revitalization project on my 85 200x. It sat mostly idle for 12 years in a shed on a friend's property. Digging into the brakes, and have stuck pistons on both front and rear calipers and the rear master cylinder. Any ideas from the gurus out there?

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[shortline10]

Can force them out by using a grease gun screwed into the banjo bolt hole .
A little heat if needed .
Their are special pliers for removing caliper pistons .

[El Camexican]

Compressed air can work too, but make sure to protect your eyes and wrap the caliper with a towel or rags before you blast air into them. I like to push them in a little with a C clamp to break them free first.

[350for350]

I just ran into this on a 1983 Goldwing. I did like El Camexican said and used a c clamp to push them a little bit first. I got the pistons to move out a little bit with compressed air. I sprayed a little WD-40 on them before I pushed them in again. Then I sprayed some inside the caliper through the banjo bolt hole. I did this thinking that it would help lube up the old, dry seals. It seemed to help. I worked them back and forth several times.

[ironchop]

I loosened the bleeder on calipers, took a grease gun with and plugged the end right onto the nipple in the bleeder and pumped grease in there until the pistons popped out.... Then I cleaned the grease out of the caliper and reinstall new seals.

[agedatc]

Can force them out by using a grease gun screwed into the banjo bolt hole .
A little heat if needed .
Their are special pliers for removing caliper pistons .Thanks for the tips.

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[agedatc]

Compressed air can work too, but make sure to protect your eyes and wrap the caliper with a towel or rags before you blast air into them. I like to push them in a little with a C clamp to break them free first.Thanks for the advice. I was able to push them in a bit with a clamp.

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[agedatc]

I just ran into this on a 1983 Goldwing. I did like El Camexican said and used a c clamp to push them a little bit first. I got the pistons to move out a little bit with compressed air. I sprayed a little WD-40 on them before I pushed them in again. Then I sprayed some inside the caliper through the banjo bolt hole. I did this thinking that it would help lube up the old, dry seals. It seemed to help. I worked them back and forth several times.Thanks for answering. I'll keep after it.

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