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-   -   Hydro boost brakes (http://www.ford-trucks.com/forums/1330375-hydro-boost-brakes.html)

4drf350 08-13-2014 11:10 AM

Hydro boost brakes
 
Hi Everyone I have a 1967 bronco an I put hydro boost an disc brakes on it an a ford power steering pump . So when I turn off my motor almost all the fluid comes up an out of the power steering pump . Does any one know why that is .

DW SD 08-14-2014 05:07 PM

sounds like the accumulator is pushing fluid back out.
Is it a new hydroboost?
Does it work properly when the engine is running?

Doug

4drf350 08-14-2014 05:25 PM

Yea it works good . I even changed the hydro unit an it does the same thing . Not sure how to fix it . I am thinking it might be the ps .

DW SD 08-14-2014 05:32 PM

1. I wonder if the pump should have a check valve that might be missing?

2. Or perhaps the pedal doesn't return 100% to close the inlet valve from the PS pump. In my setup, I have a threaded pushrod. Are you sure the pushrod is adjusted properly?

If I listen closely, I can hear fluid flowing once the pushrod comes off of the closed position.

4drf350 08-14-2014 05:37 PM

I am thinking I might put on a power brake from an newer bronco .

DW SD 08-14-2014 05:45 PM

I'd try a newer pump first.
The hydroboost offers great stopping power and firm pedal. I up-sized my master cylinder by one size and love the feel (very short throw).

Doug


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