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post #1 of (permalink) Old 09-22-2006, 09:54 AM Thread Starter
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Power Steering

NICE! Pump died on the CJ last week, and Tuesday night I hear a groan coming from the Power Steering on the ZJ. There's a pinhole leak in my pressure line that has showered the engine bay.

Picked up a new hose, no big deal, but also picked up a rebuild kit for the CJ Pump. Anyone ever rebuilt a pump before? rebuild kit was $14, pump was $40, Pump and Resivoir is $60. So with the cost saving and my curiosity for tearing things apart to understand how they work, I thought I'd rebuild it.

Always did get in trouble as a kid for tearing apart my new toys to see what made them tick. Guess that's why my parent bought me an Erector Set for my 6th birthday.

Anyway, any special tips or tricks on rebuilding the Pump? about all I've seen/heard is that the resivoir is pretty thin stamped steel so be careful with it.
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post #2 of (permalink) Old 09-22-2006, 10:14 AM
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Re: Power Steering

Yep, be careful, the housing is thin. Do you have a pump pulley puller? That helps, then it's all a matter of simply replacing parts. As you can see from the kit, there's not a lot to it...
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post #3 of (permalink) Old 09-22-2006, 10:16 AM Thread Starter
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Re: Power Steering

[ QUOTE ]
Do you have a pump pulley puller?

[/ QUOTE ]

I have a two finger puller, but not certain it's specifically a Pulley puller.
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post #4 of (permalink) Old 09-22-2006, 10:23 AM
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Re: Power Steering

Take a look at the pump shaft, it should be similar to this:

http://www.stu-offroad.com/steering/...pspulley-1.htm
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post #5 of (permalink) Old 09-22-2006, 11:23 AM
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Re: Power Steering

Hey Brent,
Fancy meeting you here.

I second the thought that the rebuild is not a big deal and worth the time to DIY.

BUT..I highly recommend going with a Pulley Puller over a fingered puller. There's too much of a chance of bending the pulley with a fingered puller. Even a slight distortion and you are going to be replacing the pulley next weekend.

Go to your local speed shop and pick up a pulley puller.

Talk with you soon..
post #6 of (permalink) Old 09-22-2006, 11:26 AM Thread Starter
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Re: Power Steering

Thanks Mike and Larry. Bending the pulley was my first thought on the 2 finger puller. That's the first time I've seen a puller like that, pretty slick.

thanks
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post #7 of (permalink) Old 09-22-2006, 12:13 PM
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Re: Power Steering

Also, be ready for the possibility of pulling the little flange OFF the pulley! IOW, better have a ride to work on Monday...

For those ready to chime in that it's rare/impossible... maybe so. All I know is the one time I had to remove a PS pump pulley, the flange began to peel off. Luckily, the pulley came off before the flange removed itself completely. I'd bet the farm it won't last another pull too! [img]/ubbthreads/images/graemlins/smirk.gif[/img]
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post #8 of (permalink) Old 09-22-2006, 01:19 PM Thread Starter
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Re: Power Steering

[ QUOTE ]
Also, be ready for the possibility of pulling the little flange OFF the pulley! IOW, better have a ride to work on Monday...

[/ QUOTE ]

You say that as if I actually drive the CJ! [img]/ubbthreads/images/graemlins/blush.gif[/img]
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post #9 of (permalink) Old 11-12-2006, 06:18 AM Thread Starter
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Re: Power Steering

alright, rebuilt the pump the other weekend. and finally had more time to reinstall an dbleed the system.

nothing.... I got nothing... No power steering. I had the wheels off the ground running it from stop to stop to bleed the system an dit was just as tight as if I had manual steering.

I was stumped (read pissed) so I stopped. Today I'm gonna pull the return line to see if I'm actually getting fluuid through the system. But other than an obstruction in the line, any thoughts? Don't know how there would be an obstruction, but it's all I can think of right now. Everything in th epump looked good to me. Not that I've ever been inside a pump before.
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post #10 of (permalink) Old 11-12-2006, 07:31 AM
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Re: Power Steering

The system must be flushed and hoses replaced before installing a new pump. Old hoses flake off rubber dust into the fluid. That can mess up the relief valve. If the relief valve doesn't seal, the pump can't build up pressure. Now that the pump has possibly had old fluid run through it, you may have to take it apart and clean it out again.

I just replaced my pump with a rebuilt. It worked, somewhat, but groaned and squealed and didn't help the steering much. I flushed it with about three quarts of new juice and then installed a fuel filter in the return line. It's getting better; sometimes it groans a little, sometimes it works fine. My parts guy says that if it doesn't come around eventually, he'll give me another pump.
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