Disc Brake Pistons

hatfieldcb

 
 
Joined
Mar 26, 2003
Messages
1,048
Location
Colorado
Working on rebuilding my disc brake calipers and I buggered up the pistons getting them out. Of course, afterwards I read about using compressed air to pop them out. :eek:

The "working" portion of the pistons are OK, but the stepped section, as you can see, are not. Can I use them or have I ruined them?
Small Pistons.JPG
 

Pin_Head

 
 
 
Joined
Feb 6, 2002
Messages
14,797
Location
OC, CA
The vise grip marks on the smaller diameter lip aren't a big deal, but the sealing surface of the pistons seems to be nicked or scratched. If it won't polish out with 600 grit silicon carbide paper, get new ones.

BTW, you can just pump the pedal with the line hooked up to pump them out ( or at least most of the way out).
 
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