Vacuum assist question 1986 P30 chassis

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Vacuum assist question 1986 P30 chassis

October 24, 2018, 09:28:41 pm

I've got vacuum assisted hydraulic brakes on a 1886 Grand Villa tag axle on a P 30 chassis. The vacuum line is sucking air from either the check valve or booster diaphram. Does anyone know anything about these parts ? Manufacturer ? Source or service?

Wantabe

Re: Vacuum assist question 1986 P30 chassis

Reply #1 – October 25, 2018, 11:34:20 am

Sounds like booster is broken. Disconnect it and plug the hose and see if it runs better. Try the brakes very carefully.

Re: Vacuum assist question 1986 P30 chassis

Reply #2 – October 25, 2018, 12:02:43 pm

I would imagine the booster would be available from NAPA, most likely as a rebuilt it will come with the check valve. Also check the hose good, over time they will get soft or develop leaks especially at the intake manifold.

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