Problems with Power Steering on an Eagle

[Gary Hatt - Publisher BCM]

My mechanic Joe, removed and rerouted the hoses on my power steering pump on my Series 60 in my Eagle. After putting everything back together, the power steering is not working. 

He did rotate the LUK pump on the front of the engine to turn it upside down so he could run the hoses in a better way, but we are assuming the pump should work in any orientation. If not, then please let me know.

I tried backing the bus up and pulling forward a few times and that did not help.

I jacked the front of the bus up off the ground and turned the steering wheel both ways to the stops to see if that would help, didn't help.

We assume at this point, we have air in the lines but are having no luck bleeding it out.  We opened the relief valve on the upside down steering box on the front, but that didn't help.

We ran the engine for a while to see if maybe heating the fluid and letting it pump would may have some affect, but that didn't help either.

Joe cleaned the relief valve and spring in the pump in case some dirt got in there and he didn't find anything, and it didn't help.

Has anyone else run into this problem and if so, what do you recommend next as we are out of ideas.  We are confident the hoses are not kinked and nothing got into the lines when they were off so we are out of ideas.

[lostagain]

Get a new bus... LOL

[luvrbus]

Rotating a hyd pump does not always work ,I rotated a pump on a twin disk torque converter on a Michigan loader one time for a guy who wanted easier access  to hoses 2 days later it was back in the original position and working     

[Jim Blackwood]

Air entrapment is a big deal with hydraulics. If the pump can't get fluid it won't pump. In other places it will make noise.

Jim

[luvrbus]

His Ross steering has a bleed valve on top of the steering box,if a automatic bleed the valve is on the bottom and do not remove that one BTDT,turning the wheels doesn't do you much good  on his bus all he has to do is start the engine idle open the bleeder valve till the air is displaced if air is the problem all it takes to bleed is a 5/16 wrench 

[chessie4905]

Crack the pump output line to see if enough air leaves to get it working. Then bleed at box.
You absolutely sure the lines aren't switched?

[Van]

"You ran it too hard and too hot" Maybe your Blinker fluid is too low.

[6805eagleguy]

Gary, did you ever solve this problem?

I have the same symptoms, except my pump is right side up.

When I loosen the bleed valve a little bit of whiteish liquid comes out then clean liquid. I assume the white is air.

Thoughts?

[luvrbus]

Gary's was a easy fix lol he may not want to go into details 

[6805eagleguy]

Oh boy

[Busted Knuckle]

Gary's was a easy fix lol he may not want to go into details 

What did he do start the engine?
  BK 

[Gary Hatt - Publisher BCM]

We found the problem, or so we think.  The hoses were reversed. It was hard to diagnose because we put them back on the same way we took them off, we can verify this with before photos. However the hoses have been reversed as long as I have owned this bus.  We are still working on this. We are going to put my original pump back on and try that, then we may reverse the hoses to see if they still work backwards.  We are suspecting that maybe a piece of hose or something got stuck in the steering gear valves and may have plugged it up.  But with the hoses on correctly, it works exactly the same as it with the hoses reversed.  Go figure.

[Jim Blackwood]

I once had a Saginaw PS unit that had the wrong spool valve installed and it went haywire. Point is, the internal valving could maybe make the line connections be switched? Just a thought.

Jim