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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering> GM saginaw pump to Ford Ranger R&P
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Topic Review (Newest First)
12-13-2012 05:00 PM
coryhussey sorry it wouldnt post
12-13-2012 04:50 PM
coryhussey hey guys here is a pic of the rack. Im assuming the open side is for the return port, and the check valve is for the pressure port?? correct?
10-21-2012 05:32 PM
coryhussey yea i thought that was the case too, but i have properly bled the rack for over 30 min. back and forth to get all the air out. Still nothing has worked, im almost thinking that this ford ranger rack will not work for me. May have to get a custom one made from unisteer
10-21-2012 04:03 PM
66GMC I've said it previously, but I believe your "jerking back and forth" is caused by trapped air in the system, not line reversal.

Read this thread on the FordRangerForum.
10-12-2012 04:10 AM
coryhussey well i still havent solved my issue yet. I put a adjustable pressure regulator on the pump from heidts, and i still have the jerky back and forth movement as mentioned before. Now it just does it alot less. I am thinking there is an air lock between the pressure relief valve in the pump, and the check valve in the steering rack. I am running out of ideas very quickly
09-28-2012 06:25 PM
enjenjo The lines are reversed AT THE RACK. The most forward fitting is pressure, the back fitting is return.
09-26-2012 06:25 PM
66GMC
Quote:
Originally Posted by coryhussey View Post
Is this 100% right? Can anyone else chime in on it. From what I have researched the port with the pressure valve in it is the inlet port, and the port with no valve is the return line back to the pump. Is this correct
The easy way to tell which hose is which is that the one that SCEWS into the pump is the pressure hose.

The hose that CLAMPS onto the reservoir is the return huse.
09-26-2012 06:22 PM
66GMC I believe that the jerking is a symptom of air in the rack.

Try forcing the steering wheel to the stops on both sides.
Try loosening the fittings on the rack, allowing the air to bleed.

Does the fluid appear foamy / bubbly inside the pump? Is it noisey?

Bleeding a Power Steering Rack
09-26-2012 05:27 PM
coryhussey Is this 100% right? Can anyone else chime in on it. From what I have researched the port with the pressure valve in it is the inlet port, and the port with no valve is the return line back to the pump. Is this correct
09-26-2012 05:17 PM
enjenjo The lines to the rack are hooked up backwards. Reverse the lines and all will be well.
09-26-2012 04:32 PM
coryhussey well i figured out my problem last night. I ended up getting another relief valve assembly from a different pump. When i went to install the assembly it wouldnt fit, pulled it out and to my surprise there was a relief valve assembly stuck in the pump, like mentioned beforehand. So i cleaned everything, put it back together, bled the air out that I could, and started the truck. Now for some reason I believe there is too much pressure, as the wheel jerks back and forth overwhelmingly, and you cannot even muscle it to keep it straight. Tried a few things, but nothing seemed to work. I think it is time for a pressure reducer. I hope it works enough and fixes my problem. Now i have the opposite effect where my steering is too touchy now, and scares the hell out of me.
09-25-2012 10:10 AM
S10xGN
Quote:
Originally Posted by coryhussey View Post
well i pulled the pump apart and see nothing unusual. I did notice from looking at a few exploded views of gm saginaw pumps, that my pump is missing a few parts that I noticed on some of the pictures. In the picture I am missing #5 and #6 out of the back of my pump. Just #23 and #24 are there. Not sure if that has anything to do with my problem

cory
Those parts, 5 & 6, are the relief valve assembly. Without those you will build zero pressure, hence your problem. Return the pump for a replacement.

Russ
09-24-2012 06:33 PM
coryhussey well i pulled the pump apart and see nothing unusual. I did notice from looking at a few exploded views of gm saginaw pumps, that my pump is missing a few parts that I noticed on some of the pictures. In the picture I am missing #5 and #6 out of the back of my pump. Just #23 and #24 are there. Not sure if that has anything to do with my problem

cory
09-22-2012 04:42 PM
coryhussey well i will give that a try tommorow, and see if i can figure out the problem. hopefully this works. Some people say it can take up to 45 minutes to bleed out a rack and pump, but I can clearly see I have no bubbles in my pump anymore. I can see the fluid moving around inside. thanks

cory
09-22-2012 10:00 AM
S10xGN
Quote:
Originally Posted by coryhussey View Post
That does sound like the problem I am having. How so was the pump leaking internally. Was the fluid going somewhere? Thanks for all the help

Cory
That's how the pump keeps from over-pressuring. There's a spring operated internal bypass valve that dumps excess (fluid) pressure back into the suction port. It's all done internally and not visible without removing (at least) the pump outlet fitting.

Russ
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