Niall wrote
I've got the same thing on my truck, JL. I got my safety inspection done by
a guy who works on several RRCs in town and was telling him what work I'd
done to the truck so far (I've already replaced the front pads, rotors, and
one caliper). He said that he's found he has to rebuild the calipers every
single time he changes the pads. There are always stuck pistons. I guess
they are too succeptible to dirt and salt and stuff being thrown up from the
road. One of my friends is actually planning on ordering a whole set of
extra calipers so he can always have a rebuilt set on hand before the pads
need to be changed (he's got three RRs).
Anyway, don't know if there's any way to solve the problem. An some sort of
hood over the caliper maybe?
Ditto, for me also. The root of the problem seems to be the seals being in
the end of the bore rather than on the piston. The sealing surface of the
piston is thus exposed to the exterior as the pads wear and the piston
extends. When you push the piston back to replace the pads it rips the seal
to shreds. The impecunious LRO solution is to remove the old pads and
caliper without pushing back the pistons, pull out the pistons and clean
them thoroughly before reassembling (with new seals if you are finicky).
Some high temp anti seize and occasional reapplication during pad wear cycle
may save the pistons for a while. If you allow the pads to wear too far the
piston can come right out of the caliper skew sideways and make the brake
into a self applying/ self servo unit (ask me how I know this!!!)
Trevor "89RR now with 1990 axles" Easton
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