warped rotor?

[RandallNeighbour]

Sorry Mr. Flashlight. I got that wrong. Infrared! Sheesh

Anyone know where I can find the parts to rebuild the caliper? I have yet to find them anywhere.

[Lil bastard]

Any dealer should have it or can order it. PN# 951.352.917.00 (36mm) or 951.352.917.01 (40mm) - I believe you will need the .00 part, but double check.

The typical Caliper rebuild kit consists of a rubber piston seal, dust boot and retaining clip.

But these caliper intergrate the seal and dust boot and don't require a retaining clip, so it's really just a single part. They're priced around $20.

You'll need a compressed air supply, a thin piece of wood and some fresh Brake Fluid.

Using about 8-10PSI pressure, place the piece of wood between the pistons where the pads usually sit - this is to prevent the piston from being damaged when it is pushed out of the caliper bore.

Remove a bleeder valve and while holding your thumb over the Brake line hole, add compressed air into the hole for the Bleeder Valve and the piston on that side will 'pop' out. It can make a pretty loud POP, but that's normal.

Remove the piston and seal/dust cover. Repeat for the other side.

Then, clean up both pistons with Brake Cleaner and then Brake Fluid, being sure not to scratch them (also a good idea to identify which side each came from and replace them the same way). If there is some scoring or a ridge where the seal was, lightly scour this area with 00 Steel Wool. Then, clean the calipwer where the seal seats and add the new Seal/Dust Cover to the caliper and press the piston back in on both sides. Replace the Bleeder Valves and that's it.

[insite]

true warped rotors are rare; usually runout difference is the result of pad material build-up and hot spots. if your rotors are fairly new, this shouldn't be a problem. i'd be looking at wheel bearings and tie rods.

[insite]

to answer the caliper rebuild stuff: when the inner seals go bad, they get soft. the inner seals actually retrac the pistons when you release the pedal. if they get soft, the pads don't retract and ride on the disks. this causes heat build-up and fade. i doubt if this is your problem. at any rate, if you want to rebuild the calipers, the dealers will NOT sell you the inner seals, only the outer dust boots. the best place to get seals AND dust boots is here:

http://www.zeckhausen.com/Brembo/Consumables.htm#Rebuild