Caliper Piston Seal...

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Old 12-13-2003, 10:32 AM
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Default Caliper Piston Seal...

<center><img src="http://pictureposter.audiworld.com/44526/rearbrakes.jpg"></center><p>
...has anyone ever removed and replaced the caliper piston protective cap (item#5) without removing the caliper??
Been trying for the last 45 minutes with no success. How do you remove the caliper entirely? When I try to take the line up, it twists the brake hose and I'm afraid I might damage it. Any help would be appreciated.
Thanks,
Old 12-13-2003, 10:37 AM
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Default You must push the piston out of the caliper. No other way.

You a flare wrench to disconnect the brake line. Use compressed air to blow the piston out of the caliper, and then replace both seals. Put a block of wood in front of the piston when you blow it out, so that the piston doesn't get damaged.<ul><li><a href="http://vista.pca.org/sch/tech_articles/caliper_rebuild/caliper_rebuild.htm">Here's some instructions on a cliper rebuild.</a></li></ul>
Old 12-13-2003, 10:59 AM
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Default I already have the piston out (I just used the tool to unscrew it out)...

...I'm having trouble with getting it back in, so I figure it'll be easier if I remove the caliper entirely so I can push down while turning the piston back.
The piston won't go back far enough to let me use the tool yet.
I can get a regular wrench on the line, but the hose twists, is there risk of this hose rupturing or is this the only way to remove the line?
Thanks,
Old 12-13-2003, 11:02 AM
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Default Turn the caliper to counteract the twisting. I know you can get a regular wrench on it,

but I recommend a flare wrench whenever you are working on brake lines. You don't want to screw them up.
Old 12-13-2003, 11:51 AM
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Mission Accomplished: Thanks Mr. Conductor
Old 12-13-2003, 12:00 PM
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Default Hope you have the special tool

I found the only way to really reinstall the rear cylinder is with the $120 tool- good luck!
Old 12-13-2003, 12:25 PM
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You can just borrow the tool from most large autoparts stores.
Old 12-13-2003, 12:52 PM
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No way man, I did with just that little$10 block.
Old 12-13-2003, 12:53 PM
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Don't know what I did, but you're welcome. Go Canada!
Old 12-13-2003, 03:00 PM
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Go TO Canada! 8-P
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