I need to replace my rotors. I'm getting a bad vibration after new brakes. My question is What size is the big nut to get the rotor off? And do I need a SUPER SIZE impact to get it off? I searched this topic but we all know the search on this site isn't the best. I can never find what I'm looking for.

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2002 Limited / Independent edition /

You do not need to take the axlenut off(the big center one),just jack the front end up,pull the wheel/tire off,remove the caliper(2-12mm bolts)and brake pads,remove caliper mount(I believe 22mm bolts),and then the rotor will pull right off.To install just reverse order,caliper mount bolts(the big ones)are torqued to 100 ft/lbs and the small ones are torqued to 132 in/lbs.

You might try changing the rotors to PowerSlot and Hawk pads ( LTS LIght Truck & SUV Pads ). I think you can find them at www.tirerack.com

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Founder of L.O.S.T.
2006 CRD Sport
Mods: GDE Hot Tune w/ 364#@2000rpm/Air Box /3" Str8 Exhaust/ASFIR Alum Skids/245-75R-16 Cooper STT PRO/OME LIFT w/Clevis & 4 Spring Isos/AirTabs/Rigid 10" S2 LED/4xGuard Ctr Matrix Bumper
Drag Strip:Reac=.1078_60ft=2.224_1/8=10.39@64.8mph_1/4+16.46@80.8mph

Just out of curiosity, when you replaced your pads did you have the rotors machined? I would try that before getting new rotors (cheaper anyway).

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Kevin
AD5VG
Just another red Jeep in the world...
L.O.S.T. #KB051963

When I bought the kj about 3 weeks ago used, The dealer replaced the pads only. The rotors look a little worn. New ones are only $22 so I went ahead and bought new ones. Thanks for the help. The damdest thing I also had to replace the radiator because of a small hole in the plastic part. It was leaking fast enough for the engine to get hot. Took me two hours to do that by myself. $250 for a new radiator.

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2002 Limited / Independent edition /

Something to try nextime.........Before you replace the rotors do 3 or 4 hard stops from 60mph+
drive for 5 or 10 minutes in between hard stops to cool rotors.This may get rid of rotor thickness variations , some people refer to RTV as "warped rotors" which can actually be caused by patches of brake material built up on rotors

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2005 Limited CRD
GDE Hot tune, Airtex Lift pump, Filter head,ProVent, 255/65/17 Kumho KL78
other diesels :
2001 Dodge 4x4 24 valve 510/1050 @rear wheels
1984 Mitsubishi Turbo Diesel_gone but not forgotten

The pinhole leak in the plastic portion of the radiator on the driver's side is pretty common. I had to replace mine too.

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June 2001 Liberty Limited 4X4
Frankenlift II Premium, Al's Upper Arms, 245/75R16 C Silent Armors on Moabs, RL Skink Super Sliders, Rear DTT, Riddler Diff Cover, Fastman Throttle Body, Profinish-Proglass Hood, Borla Dual Outlet Exhaust, TransGo Reprogramming Kit, APS Stall Converter, 4.10 Gears, B&G Chrysler PCM, Lots of Line-X, etc...