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Old 06-22-2013, 03:53 PM
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Join Date: Aug 2007
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79 4502l Front hub seperation

Doing complete front and rear brake job. Calipers rebuilt new rotors, pads and hose. The front hub and rotor have been removed, the bolts holding the rotor to the hub are removed. How do you separate the hub to replace the rotor?
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Old 06-22-2013, 04:42 PM
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Join Date: Jun 2007
Location: Bahama/Eno Twp, NC
Posts: 3,256
Is this a 450 SL? There's a special forum for those where you might get a quicker answer.

On most cars, once the caliper is off, there's an assembly screw that keeps the rotor attached to the hub. Simply removing this single screw will usually allow the rotor to simply fall off.
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Old 06-22-2013, 05:44 PM
Posting since Jan 2000
Join Date: Sep 2011
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Yes, there should be a countersunk socket head capscrew(commonly called an Allen screw) holding the hat in place.
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Old 06-23-2013, 10:36 PM
Join Date: Sep 2005
Posts: 664
I have seen these with a single countersunk screw attaching the rotor to the hub. Just look at the outside of the rotor and you will see the holes for the wheel studs to go through. Look closer and you will see a screw head (it could be a slot, an allen, or a torx) and it will likely be very rusted over. I have also seen these screwed in from the back.

This screw needs to be removed and the hub and rotor will come apart. All the screw does is make it easier to reassemble the thing when you are replacing it on the car. It needs to be there, but it is not like it is a vital part of the structure so it might not stand out and you will need to look hard for it.

But if you cannot see how to do this due to the part being rusted or perhaps just different from how we have described it you can always take it to a brake shop and for a small fee they will deal with this.

It might cost you $10, but what is your time worth?
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Old 06-23-2013, 10:47 PM
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He has the old style, just whack it with a hammer. Its not a press fit, just stuck.
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