Does high steer modification require more steer pump pressure?

[jonboy1919]

Last weekend I successfully installed high steer on my SOA 4 inch lifted CJ7 . During this modification I also installed a remanufactured Saginaw gearbox, a reman steer pump and new steer pump lines.

Upon my test drive, I found that the power steering would not work under 2500 RPMs. This is very problematic when one has an automatic Transmission .

My question: does high steer require more steering pump pressure than my old drop down Pitman arm/out of geometry steering?

If a higher pressure power steering pump is required, does anyone know what pump that might be and where to get it?

The other theory I have is that the remanufactured power steering pump I installed was a bad remanufacturing job. I have a second one on the way from Napa auto-parts Thursday.

As anyone on this forum come across these problems? Sure would like some opinions. Thank you.


"Round Jeep is Good Jeep"

 

[GatorBate]

A few months back I put in an ARG Super Box 2. I kept the old pump and it was hard to steer for a while. It seem ok now. I'm not sure if it needed to break in or if I just got used to it. I think a little of both.

 

[Old Dog]

A stock pump should work fine with high steer. (I assume you mean you used flat top knuckles and high steer arms).
I just had to put a new pump from AZ on mine. It did take a little work and time to get it all bleed.

 

[jonboy1919]

Old Dog, first, sorry about the loss of your pooch. Second, I did not "correctly bleed" the system upon install and before test drive. What is your method for bleeding?


"Round Jeep is Good Jeep"

 

[Old Dog]

I just had to keep turning the wheels lock to lock till all the air was out. Took a couple days though.

 

[Posi]

As OD mentioned you should be fine with the stock pump, especially running your 33" tires. There is an option for folks running larger tires and feel they need a bit more pressure from the pump at idle/crawl.

Behind the HP line is the main fitting, flow piston, and spring. Remove the end cap on the flow piston, inside you'll find a spring, limiting stud, BB, and shim/shims. Some pumps have shims some do not. Add a 3mm washer in the bottom of the piston housing and under the spring. Grind off a bit from the limiting stud so it has room to travel and won't block off all the pressure. If you still feel you need more pressure go with a 4mm washer but only after you've tried the smaller 3mm washer first.

The above mod is for stock setups, there is other pump mods for running with hydro assist