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Old 04-09-2012, 10:47 PM   #1
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Remanufactured brake caliper questions.

So i had the front left caliper overheat and seize on me on a residential highway; that was fun times. Luckily it was close to home. I pulled off into the first available parking lot and gave it a few minutes. It had stopped smoking and ticking by the time my heart rate returned to double digits, so i limped it home slowly and engine breaking.

The only parts store i could find open on easter sunday only had "Fenco" remanufactured calipers, and only the phenolic piston ones at that. I know it's better to replace them in pairs, but i honestly think the existing 8 year old (non-seized) caliper on the right side is in better condition than the reman one would be out of the box... Maybe i'll try to source a pair of mopar steel piston calipers down the line a bit and replace both for good. In the mean-time, the single reman swap has got me back on the road, but not 100% confidently. A couple questions:

1.) The new caliper has ALOT of rotational play in it against the axis of the rotor. The slide bolts are tightened, and the slides themselves are firmly fixed to the mounting plate, the caliper just rocks on them WAY more than the stock one did. I know the braking force is exerted on the mounting plate by the pads themselves, but this rocking motion by the caliper has me concerned. Are all remanufactured calipers like that? (pic demonstrates the observed rocking motion)




2.) The reman caliper came with these metal clips. The stock one did not have clips, and i didn't see any obvious way to attach them that would in some way improve the installation. They are not on right now, anyone know how/where they should be?



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Old 04-10-2012, 12:30 AM   #2
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None of the stock calipers ever had those clips in a TJ application, so I'm not sure how they are supposed to work.

If you are getting more play than you are comfortable with, try pumping the pedal several times to see if jacking the pistons out against the pads helps at all.

The cause of the play could be poor quality rubber dust boots. They are one piece and slide through the guide sleeve holes before the guide sleeves go through. Or, it could be the holes are enlarged from rust, or poor manufacturing, or a combination of all or part.

Try putting your old guide sleeves and dust boots into one of the holes and see if it tightens anything up.
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