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Username Post: Hot rear drums on 1964 Impala
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Posts: 74
Age: 62
Loc: New Jersey
Reg: 02-11-12
06-21-21 12:18 PM - Post#2821908    
    In response to USCGMK1

My suggestion would be to loosen the parking brake adjuster.Remove the rear wheels and and recheck to make sure you have everything installed correctly.You mentioned Disc Brakes on the front.Did you also install a correct proportioning valve?You'd be surprised the cars that come on in here that have still original brake parts after doing a disc brake upgrade with especially the rear brake hose still on the car.Drum brake shoes have a primary and secondary shoe.The shoes with the smaller amount of lining is the primary which faces the front and the shoe with the larger amount of lining is the secondary which faces the rear.Reinstall the drums and push the brake pedal a few times to center the shoes.Then you can use the adjuster for a slight drag on the rear drums as you turn them and can slide them off and on fairly easy.Then go to the parking brake adjuster and tighten to until you take the slack out of the cable.Operate the parking brake and the brakes should lock about 1/3-1/2 way travel.Adjust as needed.Release the parking brake then recheck the shoe drag at the drums,if the drums got tight,you have a binding cable as there are three cables used.Cables as rule should be replaced anyway due to age or at least checked, cleaned and lubricated to ensure they don't bind.I'ved save many originals here with good success.Even the mechanism inside needs attention too.Pretty every moving part in the system.Hope this helps you out!
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