power steering help

[Peter Gardella]

So I just installed a 1978 Celica power steering gearbox and a 87 4runner power steering pump in my Sami. I got it all hooked up and fluid throughout the system( I added fluid and then started the Sami and then added as was needed, then let it sit over night to let air bubbles out).+ Today I started up the Sami to test the power steering out and the steering wheel just about ripped my arm off. It just started to self steer to the right. This is while the Sami is idling, parked in my garage, so I know it has nothing to do with alignment. Any body got any ideas. I know there is valve that can be adjusted but I don't know how or where it is.+ Any help would be much appreciated.