Power Steering Problems

[MACKL]

I just completed adding power steering to my truck and I only have power assist when I turn the wheel in one direction. When I go the opposite direction it is next to imposible to turn.
I pulled the box and pump off a donor parts truck 2 years ago. The po said it worked, but he lied about everything else so this may have been a tall tale too.
My logic says it is in the box. The pump simply supplys pressure and has not control over right or left. It acts like there is a control valve stuck inside the box that will not activate the assist when it is turned in both directions. In 26 years of turning wrenches, I've never been inside of a P/S gear box.

Anyone have any ideas of what could be causing this?

Thanks...Kelly

[68C15]

was the box outside in the weather for 2 years?
did you bleed the system? wheels off ground & engine off of course.
it is possible ther is either air or rust stuck in part of the spool valve. these can be rebuilt at home if you are very carefull & have a super clean bench area. realistically though if your budget allows it get a reman unit. that is after bleeding it again.
let me know how it goes, Todd

[MACKL]

Todd,
Thanks for the tips. I worked on it after church today and it is working correctly. I bled the system again and after it got hot, it started working right. I HAVE POWER STEERING AND POWER DISC UP FRONT, YAHOO! Long time comming...Kelly

[Tx Firefighter]

I've seen them take several days to finally bleed completely, so keep an eye on your fluid level for awhile.