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If your talking about a distributor rotor its easy.First pull your cap off and under that is your rotor.Pull up on it,it should pull off.Replace with new one.You cant screw up it only goes on one way.

Now if your talking about a brake rotor.You first have to remove your caliper.Then your rotor should come off.Sometimes you have to hit it with a hammer to loosten it.Do the reverse to install it.

If your talking about a brake rotor, it most likely will not just pop off. pop off rotors are common on most newer cars, but the older ones are bolted on. there is a cap in the center of the spindle, pop that off and remove the cotter pin and bolt and washer and bearing. set these aside in the order you took them off. now the rotor will come right off. You can use the old bearings again, you just have to re-pack them with grease. but if you do reuse the old bearings, make sure you repack them. You will probably have to remove the grease seal in the back of the rotor to get the rear bearing out, and put a new one on the new rotor. reassemble the new rotor just like the old one was and put then nut back on. to tighten the nut, get a pair of channel locks and tighten the nut. then spin the rotor as you loosent the nut slowly and then retighten it. do this about 3-4 times. The nut should not be really tight. If you are unsure of how to do this, please do not try it. The put the cotter pin back in and the cover back on, and reinstall the caliper.

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Q: How do you change a rotor on a 1985 Pontiac Firebird?
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