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Unread 07-19-2012, 08:46 AM   #1
andejen
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No power steering turning left
I have a 1991 YJ with a 2004 4.0 drive train. Other issues led me to replace the pump and gear box. I have done both before with no issues. Now I have power steering turning right but none when turning left. I have placed the front on jack stands and problem still happens. With motor off I can easily turn wheel to the stops right and left. I couldn't get pitman arm off on my own so a shop did that for me and reinstalled it on new gear box. I'm wondering if I just need to bleed it more or if pitman arm may not be centered. Any thoughts or idea would be great. I'm new to the forum but have been jeeping for years. Thanks for any input on this issue.

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Unread 07-19-2012, 02:18 PM   #2
Mishimoto
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Welcome to JeepForum!

If the shop was good they would have put the new gearbox at the position as the old before removing the pitman arm and transferring it. Sounds like they did that though, because you can turn left to right with the engine off. Is the new gearbox for the 91? Are you using the 04 pump and hoses?
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Unread 07-19-2012, 02:35 PM   #3
andejen
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The gear box and hoses are for the 91 and pump is for an 04. Today I blocked up the front again and tried bleeding it again by rotating full turns with engine off then doing the same with engine running. No change and fluid level stays good. It just baffles me that turning right with wheels in any position I'm good but turning left at any point I have no power steering. Is it possible the gears inside the gear box are too tight? Just trying to think of something.
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Unread 07-19-2012, 02:45 PM   #4
Mishimoto
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Are you turning the wheels by hand with the engine off or the steering wheel?
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Unread 07-19-2012, 03:04 PM   #5
andejen
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With the steering wheel but I have moved it by pushing tire itself. I used steering wheel to bleed.
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Unread 07-19-2012, 03:34 PM   #6
Mishimoto
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Just a shot in the dark, have you tried putting the wheel all the way to the left, unhooking the return line, having someone start the engine and see what happens? It sounds like you have a flow issue, but for it to be only on one side has me baffled.
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Unread 07-19-2012, 03:44 PM   #7
andejen
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The issue being only one way has got me stumped to. I will try removing the return line and see if I've got flow. After that I was thinking I would disconnect the pitman arm from the drag link and see if the gear box is centered. Does the gear box have internal stops so I can turn steering stop to stop to find center that way? Thanks by the way for the input.
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Unread 07-20-2012, 07:24 AM   #8
Mishimoto
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The gear box does have stops, but it if hits a stop, the steering should not be able to turn in that direction anymore. You are able to turn fully left and right, so I would think that the gearbox is correct.

Sidenote*I changed a gearbox for a customer last year because it had excessive slop. New gearbox on went on and the power steering stopped working. But we didn't have power steering in either direction, put on a new pump and it has been good
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Unread 07-20-2012, 07:31 AM   #9
andejen
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I'm starting to think I may have an issue with the gear box. I think it's best I replace it under warranty instead of trying to open the top and adjusting it. This afternoon I'm going to do that. Will post what the results are.
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Unread 07-20-2012, 09:23 AM   #10
Mishimoto
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What kind of warranty did you get with gearbox?
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Unread 07-20-2012, 09:30 AM   #11
andejen
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Got it from autozone but now thinking I may return and get one from PSC
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Unread 07-24-2012, 07:18 AM   #12
Mishimoto
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Any updates on this?
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Unread 07-24-2012, 07:38 AM   #13
andejen
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Thank you for reminding me. I finally got a shop to remove the pitman arm from the gear box. Installed the replacement gear box yesterday and everything works great. Only thing I can think of is I got a faulty gear box. Thanks for the input though.
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Unread 07-24-2012, 07:42 AM   #14
Mishimoto
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I wonder what failed inside that box to cause that problem. Glad to hear you've got it fixed
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Unread 07-24-2012, 07:59 AM   #15
Tlewis11
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I'm not sure but i know in a rack and pinon front end that you don't have there is a internal valve almost like a check valve that has to close in order for the fluid to biuld up pressure on the needed side you turn left the pressure fluid has yo be stopped from pushing right and visa versa I have not been in a gearbox to see but I would think that it would work off the same principles
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