Question about 1999 Ford Explorer

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Rear hub siezed to mounting. I've had the car dismantled to the point that the hub should come off, and I've tried giving it some hard whacks with a rubber malet. It is siezed hard to the lower arm. Any suggestions on how I can loosen it?

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  • Ford Master
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Hello, I have read your request for help and have had a few rear Rotors and hubs that have gone through Michigan winters. Hitting it with a rubber malet is like using a Q-tip for those things. If my tricks do not work you might have to pull the axle shaft by going into the differential. Depending on the axle type, you may have clips or star wheels inside the differential.

Anyway, You do have to get the emergency brakes contracted to clear any grooves inside the center of the rotor by adjusting the starwheel. The rotor and axle hub rust into 1 piece. What is have used is a Dremmel tool with a grinder head and gone behind the rotor and grinded where the seam for the hub and rotor meet. You only have a small clearance which the Dremmel is perfect for. Just put the vehicle in Neutral so you can spin the hub to move the hub to the Dremmel. Then grind away.

Of course using penetrating oil on the outside studs is a must, working at 12 O'clock spray solvent, beat, turn to next stud, repeat, in an effort to lube the area between the rotor and axle shaft. On the most stubborn rotors I made a tool by using openings in the caliper bracket. By using a socket you can get a bolt and a nut and some washers and make yourself a threaded wedge to turn and pry against the rotor. As the bolt twists inside the socket ( when you wrench it) you can expand the length of the tool and press the rotor off the hub. It will be necessary to turn the hub, so back off the tool and get a new place to apply pressure and repeat.

If you still have not been successful, you can try heat. A common flare burns between 3500 and 5000 degrees. Put on some sunshades, light up the flare, and thoroughly heat the area, then beat on it. You probably need to replace the rotors anyway.

If this does not get it off, you can try removing your axle shaft bolts from the back, and opening the rear-end. I hope my solutions are very helpful to you. Would like to hear from you when you get them off and verify what worked. You won't find these techniques in a classroom.

Posted on Apr 04, 2011

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