Re: Hydro Boost Sucks!
I'm rather intersted in how this works out for you since I'm running hydraboost brakes now and may add the WTO assist in the near future. To date, mine works perfect and I have no complaints. What I have had problems with when I first installed the system was similar to the problems your having now which resulted from air in the lines. It took me a long time work out the bubbles before the system came to life and stayed that way. I have sliced a return line to the system and lost most of my fluid which effected the steering (stiff responce and a horrible whining) but the brakes never flinched (a result of the pressure reservoir mated to the hydrabooster I assume). Once the fluid was topped back off, the whining went away and everything was back to normal.
Now back to your problem. Before you modified the system yesterday, you had the steering, brakes and ram all working relatively fine right? Or did you add the ram at the same time you modified the pressure fitting? I'm no expert at this but I think a little deduction could help isolate the problem. We know the ram and power steering can co-exist fine, we know the hydra-brakes and steering can co-exist fine. I know that if I pump the brakes hard on mine while turning the wheel I can feel little pulses in the steering as I turn but its invisible while not touching the brakes. This would leed me to belive that any problems you have should only surface when touching the brakes under normal circumstances with all three working together. But there are a few different types of hydraboost setups out there which could react differently. My setup uses a stock power steering pump with one high pressure out, and one low pressure return (some have 2 high pressure outs and 2 returns). My pump directly feeds my Hydrabooster, and the hydrabooster then feeds my steering box, both the booster and the box share a low pressure return which "T"'s back to the pump. I'm guessing this is how yours is set up as well. Now you have 2 additional high pressure lines ported out of your steering box to the ram. Theoreticly, if your having braking broblems, the whole system should fail equally. If your having steering problems when not touching the brakes at all, then you have issues with the ram and steering box. Diagnostics of those two will be harder since one could potentially resist the other and make both seem like they are failing. Now if you have good steering which seems to fail when you hit the brakes, then I would suspect a pressure failure of perhaps the pump not keeping up.
Above I mentioned a second case where the pump has 2 high pressure lines, one to the hydrabooster and one the steering box. I'm not familiar on how the pressure between the two lines are regulated so I can't offer any help for you there, perhaps someone else can chime in. Either way, keep an update on this post of which setup you have and symptoms your experiencing. I'll do what I can to help.
