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Unread 07-18-2013, 07:58 AM   #1
Yoda95
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1995 ZJ 
 
Join Date: Jun 2013
Location: Marietta, GA
Posts: 45
Power Steering reservoir filter screen

Hi all, I have really enjoyed the board, and all of the helpful tips. I try to add my own when I can.

I have the classic whiny power steering pump, and I have tried to fix it with different fluids and additives, but to no avail. I believe it is caused by cavitation, and I would like to repair/poke a hole in/or otherwise mangle the screen filter somewhere in the pump reservoir...which I believe is clogged.

Has anyone located this screen? I have heard it is only replaceable by replacing the reservoir, but if I have to take the pump off to get the reservoir off, then I might as well replace the pump, too. I would rather not do this right now.

If someone knows where this filter screen is located, I would like to drain the reservoir and punch a hole in it with a screwdriver, or pull it out with some needlenose pliers. Anyone know where it is?

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Unread 07-18-2013, 09:16 AM   #2
zjosh93
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1993 ZJ 
 
Join Date: Aug 2010
Location: Austin
Posts: 994
I've taken apart and rebuilt my pump and I've got a brand new reservoir waiting to go on right now. There is no screen anywhere in there. Sorry.

Exploded view here for reference: http://www.factorychryslerparts.com/...ssembly=560243
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Unread 07-18-2013, 10:13 AM   #3
Yoda95
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1995 ZJ 
 
Join Date: Jun 2013
Location: Marietta, GA
Posts: 45
Thanks, I guess that explains why I couldn't find one with a flashlight. That is a great diagram...but what is #27?

I suppose I will just replace the whole thing eventually and live with the WHINE! It does suck, though.
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Unread 07-18-2013, 11:02 AM   #4
zjosh93
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1993 ZJ 
 
Join Date: Aug 2010
Location: Austin
Posts: 994
I saw that #27 but I don't know what it could be. There's nothing more to the reservoir than the reservoir itself and one oring.

Have you tried purging any trapped air from your system? I saw a pretty good write up from some magazine when I was googling around to find the reservoir seal dimensions but I can't seem to find it now. They had a whole procedure.
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Unread 07-18-2013, 11:44 AM   #5
Yoda95
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1995 ZJ 
 
Join Date: Jun 2013
Location: Marietta, GA
Posts: 45
I haven't, and really don't have the place to do it. I am a driveway mechanic, in the parking lot of my apartment complex...so I have to keep the fluid spills to a minimum. If I can do it without spilling a lot of fluid, I will look into it.

How about that 'lock to lock' method I have seen? I tried it a few times and it seemed to work for a while, but as soon as it gets cold again it is noisy. Besides the non-existent screen, where else and what else do you think would cause cavitation or air bubbles? No leaks, and a newer high pressure line was put on before I got it.
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Unread 07-18-2013, 11:59 AM   #6
zjosh93
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Join Date: Aug 2010
Location: Austin
Posts: 994
The article I read mentioned that you can suck air in from the o-ring between the reservoir and the pump. It can be loose enough to let air in but not enough to cause a leak. Besides a leak there is hard to spot as it tends to dribble down between the pump and reservoir, get caught in the brackets and wind, and never get to the ground.
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Unread 07-18-2013, 01:22 PM   #7
Yoda95
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1995 ZJ 
 
Join Date: Jun 2013
Location: Marietta, GA
Posts: 45
I think it is just time to bite the bullet and put another pump on. Just ordered one, and will get the belt done, too...so maybe I can do a write up with pics for the n00bs like me!
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