Quote:
Originally Posted by SUPERTOM
I got my used set and started messing with them. The rears when you pull them out they slide back in on their own. But on the front ones if you slide them out they dont slide back in on their own you have to manually do it. So are my fronts bad?? How are they supposed to work? Ive searched all over this board and cant find a damn thing.
Oh yeah and im talking about the slider bolts not the pistons
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Did you thoroughly clean out the bores of all the caliper brackets before reassembly and before regreasing?
After you clamp the caliper together with your hand (1 hand or thumbs on the caliper bracket while pulling towards you with your hand on the actual caliper with the pistons in it) as it is ON its slider bolts and caliper bracket the caliper should squeeze the caliper rubber slider bolt boots together nearly as far as they can squeeze/compress. After letting go the caliper should then spread back out on its own (not inward towards the bottom of the caliper bracket bores, but AWAY) away from you towards the wheel well. This should be the same for all 4 brakes I do believe. If they don't spread back out (pistons compressed all the way into the caliper FIRST) towards the wheel well then there's a good chance the caliper is sitting slanted and the rotor is touching the caliper and/or caliper bracket metal
which is NO GOOD.
When "setting up the caliper" (rear or front) they should be in a position where the slider bolts are almost (maybe 80-90%) all the way into the bolt bores with just LITTLE enough grease to allow them to slide and go all the way in too.
*NOTE: Rebuilt rears may act differently due to the cap of one of the bores not being air-tight since remanufacturing. I've taken to the idea of RTV'ing all around that cap (cleaning it first) so that its air tight and debris can't get in.
So in short: You are sandwich clamping the caliper with your hands and it should move backward from you towards the wheel well maybe .5 - 1 inch worth of distance. If it doesn't then you may need to remove some slider bolt grease and/or reclean the bracket bores for the slider bolts.