power drum brakes - Nova Tech
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Old Aug 28th, 19, 10:15 PM
JOENOVA JOENOVA is offline
 
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Default power drum brakes

Hi. New to forum. Recently just acquired a 70 nova with power drum brakes. This thing was in pieces but managed to start putting this together. Issue I am having is when i start the vehicle and vacuum builds, the brake pedal sinks far enough to apply the brakes and turn on brake lights. I had a 72 nova years back but was manual brakes. Any advice?
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Old Aug 29th, 19, 12:22 PM
Big Dave Big Dave is offline
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Default Re: power drum brakes

Welcome to the Team Joe!

Sounds like the valve that prevents the power brake booster from holding a vacuum is defective. It is a small Black cylinder in the vacuum line coming off the intake or carb that goes to the vacuum diaphragm canister. Cheap to buy easy no tools needed to fix just plugs into the line. Might want to replace the hose as well as it is probably dried out and cracked allowing air in.

Big Dave
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Old Sep 2nd, 19, 11:38 AM
62 NovaWagon 62 NovaWagon is offline
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Default Re: power drum brakes

Welcome to Team Nova Joe!
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