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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Oct-30-2010, 06:10:45 AM   #11
SC_TR0JAN_M3
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yeah i'm in the same place and stuck. need to find a way to get it out...
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Old Sat, Oct-30-2010, 09:10:36 PM   #12
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I had to rebuild a caliper on my old E36 M3 a few years back. It was actually pretty easy.

I used the brake pedal to force the piston almost all the way out. I did not want brake fluid all over the place so I got it close to popping all the way out.

I then disconnected the brake line and capped it so I lost hardly any fluid.

Once apart I cleaned up the piston and put it in the freezer for a few hours.

When I was ready to put it back together I put the caliper in the oven at 250 degrees for about 30 minutes.

I got the piston out of the freezer, replaced the seals, and then was able to push it back into the caliper. It was still somewhat difficult to get back in but eventually I got it.

Once back on the car I only bled that one side and everything was great!
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Old Sat, Oct-30-2010, 09:19:01 PM   #13
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say what? freezer & oven?
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Old Sat, Oct-30-2010, 09:21:58 PM   #14
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Quote:
Originally Posted by SC_TR0JAN_M3 View Post
say what? freezer & oven?
LOL.............. I know, sounds crazy but you will thank me when putting the piston back into the caliper.

Heat expands and cold contracts. So you put the piston in the freezer to contract and the caliper in the oven to expand. Makes it easier to push the piston back into the caliper.
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Discussing A little guidance needed on caliper piston removal... in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)