View Single Post
beepbeep beepbeep is offline
Registered User
beepbeep's Avatar
Join Date: Jun 2001
Location: Sweden
Posts: 5,564
Originally Posted by Alan L View Post
Have installed new rotors and pads. Two frozen bleed nipples. When was the system last bled?? One of them tore metal out when I got it free with oxy acetylene. Not sure what to do with that one.
Leak down coming up.
You could drill the nipple-hole to next dimension, cut new threads and install oversize nipple, for example. Just clean out the fillings afterwords.

I usually "excersize" the pistons on old calipers by pushing them out and pressing them in couple of times. Do not press the brake pedal all the way to the bottom as MBC seals might go past the presumed dirt ridge and get damaged. I press out the pistons as far as I feel confident, lift rubber seal from the piston with small screwdriver (w/o damaging it) and spray penetrating oil trough the exposed crack. After that they usually move much easier. As far as I remember, there are two steel plates inbetwen caliper halves and it's often corroded (probably due to galvanic current between Fe-Al). It should be cleaned as pads might jam on them.
Thank you for your time,
Old 11-20-2007, 02:14 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #71 (permalink)