Ford Truck Enthusiasts Forums

Ford Truck Enthusiasts Forums (
-   1966 - 1977 Early Broncos (
-   -   Hydro boost brakes (

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?


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).


All times are GMT -5. The time now is 05:24 AM.

Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.