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Brake caliper pistons

5.9K views 13 replies 6 participants last post by  mattg  
I have an air compressor and still had trouble getting all the pistons out. .

I seen a video of a honda tech and he didn't bother to remove them completely. he put a thin piece of wood, like a shim in between the 4 pistons and let them all come out at once. they don't come out of the caliper all the way at this point (as you know)then he use a old tooth brush and brushed them off with a cleaner he had that was safe for rubber.
 
^ haha, yep the force those little bastards can apply is amazing.
It was the funniest thing I ever had happen to me. I could not pull my fingers out of the caliper so I had to dig for a screwdriver and pry the pistons apart.:lol it left me with some sore ass fingers for sure
 
relube the pistons and seals with the brake fluid. thats what the service manual suggests.

put a piece of 1/4 inch wood between the pistons. so when you blow air in the caliper they don't hit each other. and keep your fingers out of there when you do it. I got mine jammed in there and crushed. and they dont release unless you pry on them.

I also used permatex's synthetic caliper grease on mine. now permatex has a better lube for calipers. and you can use it on the pistons and seals. but I can't find it in stores yet.
http://www.permatex.com/products/au...ricants/specialty_lubricants/Permatex_Ceramic_Extreme_Brake_Parts_Lubricant.htm

a one liter bottle is way way more than enough. I end up using 1/2 - 3/4 of a 12oz bottle. a liter is basically a quart.