Well I decided to replace the leaking rear axel seal and possibly the bearing if needed. But I can't get the rear rotor to budge. I've tried beating, prying, soaking with penetrating oil and also tried using a 1/4 bolt and nut thru the caliper hole to break it free.. I've loosened the E brake using the star wheel. Anyone ever have this problem? It's a 1999 Grand Cherokee. Any suggestions other than rolling it off a cliff? Thanks for looking.
get a rubber mallet, relieve some stress. You probably have more then the rotor, hence the rotor will submit to your commands.
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I had the same problem, I used two prybars carfully wedged behind the rotor and kept rotating and carfully beating on the rotor hat until it broke loose. It looked like the center hole for the axle flange had rusted to the rotor hat. I took a Dremil tool and snading drum to the inside radius and cleaned up the edge, since then no problem getting the rotor off.
Not sure about the 1999, but my 2002 was a PITA to get off until I completely released the pressure on the parking brake pads inside the rotor. Involved taking out the center console and part of the carpet in the back to release the cable at the parking brake lever and Y junction behind it....ridiculous I know. However, they both just slide right off after that. I also tried the hammer, prybar, harsh language, star adjuster before doing this (and I wasn't going to replace the rotor anyway; so I wasn't nice...still didn't work until Idid the above procedure.) FWIW, good luck.
Or you can just heat up the rotor bewtwen the lugs with a blow torch and occsionally hit with a no so big hammer and they will come right off. Remember you don't want to melt anything just heat it up to loosen it.
I had the same problem with my '01 when replacing the bad seal- heated it, used WD-40, big hammer. Eventually a gear puller did the trick and the rear rotor is now slightly warped (can barely tell when stopping from high speeds of 60mph+).
BTW, I had to replace the bearing. If the 99 is the same as an 01, there is a press-on ring that needs to get cut off to get to the seal and bearing. I took it to a machine shop and they had to cut the bearing due to it being so close to the ring.