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brake booster problems
Posted: Tue Sep 06, 2011 8:13 pm
by danger
i have a 89 mav and after about 5 mins of driving all 4 brakes start sticking untill i cant drive any more. if i pull a hose off the booster and let the suction off the brakes free up and i can drive again.
does anyone know how to fix this or why this would happen
Re: brake booster problems
Posted: Tue Sep 06, 2011 8:39 pm
by DamTriton
If you have had the booster apart recently, my guess is you have installed the one way vacuum valve backwards (manifold-boodter or vacpump-booster line)
Re: brake booster problems
Posted: Tue Sep 06, 2011 8:56 pm
by danger
i just boght the mav and its got a new master cylinder on it so he may of had the booster apart aswell. the bloke i bought it off never got it on the road so he probly never tested it properly
Re: brake booster problems
Posted: Tue Sep 06, 2011 10:20 pm
by RED60
Master cylinder may also be the wrong size..... though this doesn't explain why they are staying on....
Re: brake booster problems
Posted: Thu Sep 08, 2011 1:53 am
by zukIzzy
Actuator rod is a few mm to long, causes the MC to retail some pressure. remove the MC and adjust the adtuator rod till it relases all the way with the vacume booster charged.
wayne