bleeding power steering system with hydroboost

[86Cucvbeater]

i have an 86 with hydroboost that i just put hydro assist on. do u bleed the power steering system in any special way? i put it up on stands and turned the tires back and forth for about 10 minutes, while stepping on the brakes often. should i hold the brakes the whole time? reason i ask is because my brakes now feel a bit spongy(they were awesome before) and my steering has 2 'hard' spots in it. this leads me to believe there is still some air in the system. otherwise everything is great. also, anyone else done assist with hydroboost want to share their experience?

 

[sandawgk5]

I have HB but my assist is not on yet. I would be interested in how the steering works while the brakes are applied and also what if any mods you have done to the pump. It sounds like you just need to bleed some more.

Ira

 

[86Cucvbeater]

I have HB but my assist is not on yet. I would be interested in how the steering works while the brakes are applied and also what if any mods you have done to the pump. It sounds like you just need to bleed some more.

Ira

the steering functions the same whether im on the brakes or not. good thing huh i didnt modify the pump because i heard it can cause premature wear but i added a cooler and filter to the low pressure side of the system. hopefully i just have some air still in there.

 

[sandawgk5]

the steering functions the same whether im on the brakes or not. good thing huh i didnt modify the pump because i heard it can cause premature wear but i added a cooler and filter to the low pressure side of the system. hopefully i just have some air still in there.

The coolers can trap air and cause issues with bleeding also. When you think you have bled enough start over and do it again. Also drive it around the block a few times carefully. Changing pump speed as you drive helps drive some air out.

Ira

 

[mrhoes]

I put a new hydroboost on my 92 1-ton a while back, the old one was leaking and my brakes now are worse than they were before. I read the bleeding instructions and the brakes still suck! I think I am going to take it back and get another one.