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  #1  
Old 06-03-2004, 09:36 AM
Coming back from burnout
 
Join Date: Jun 1999
Location: in the Pacific Northwest
Posts: 2,274
#$$! Cant get my Pistons out of my 87 300D calipers...WD 40?

$%^& Actually I got the old seals and pistons out, but when I reassembled them with the new seals, I didnt get either Dust Boot to sit perfectly in the ridge that lies underneath the caliper top. One had about 1/4" sticking out and the other about 1" sticking out.

So to them right, I tried removing the pistons again. They wont budge. I even resorted to sticking (CRINGE) vise grips on them and trying to tap them out. Now i have serrated outer edges.I soaked them in brake fluid for an hour to see if that would loosen them up...no luck.
I know the obvious thing to do is to pump them out using the cars hydraulic system, but i am a little nervous since I have ABS and dont know what this migh do the accumulator when they finally "Pop"

Is there an obvious soultion I am overlooking? WD 40? Finally how much psi is brake pressure? I might be able to jury rig up something with my air compressor....

Finally why doesnt some one ever machine a threaded hole in the piston bottoms so a bolt can be screwed in and used with a impact puller or something...This is Mercedes, after all....
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  #2  
Old 06-03-2004, 09:45 AM
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Join Date: Sep 2001
Location: central Texas
Posts: 17,277
I was browsing my FSM the other night thinking about installing my new pads on my 240.....and was shocked to see a puller made for pulling the pads out...will find picture if no one speaks up with suggestions...
Did you use the bleeder screw to allow you to depress the pistons enough?
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  #3  
Old 06-03-2004, 01:09 PM
Coming back from burnout
 
Join Date: Jun 1999
Location: in the Pacific Northwest
Posts: 2,274
Got them out--I used a Rubber Tip

on my air gun and they came out like cannonballs. The Rubber Tip IS THE DIFFERENCE
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  #4  
Old 06-03-2004, 01:26 PM
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Join Date: Sep 2001
Location: central Texas
Posts: 17,277
Keeping your fingers out from between them at that time makes a big difference too...... LOL
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