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post #1 of (permalink) Old 07-21-2003, 05:28 PM Thread Starter
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Changing ball joints?How to set pre-load on top?

Obviously, I don't know how to properly install a new set of ball joints. How do I know this? Well because I just installed a new set on my Dana 44 less than 1500 miles ago. And guess what? The top joints are real loose. I guess I didn't get the preload correct on the joints when I installed them. What is the proper procedure for this? There is a small insert in the axle end that can be adjusted down on top of the upper joint. I assume that there is some specification for how tight it should be. This is before you install the castle nut and cotter. What is the torque spec, and what tool fits into the insert so that you can properly torque it down?

Thanks,
Tom
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post #2 of (permalink) Old 07-21-2003, 05:42 PM
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Re: Changing ball joints?How to set pre-load on top?

Mine set at 50ft/lb but that was a 30 not a 44.
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post #3 of (permalink) Old 07-21-2003, 05:47 PM
 
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Re: Changing ball joints?How to set pre-load on top?

snap on sells the wrench, or you can grind a chap socket to work, or you can borrow one from WILL ( thats what I did)

I read the procedure a couple of days ago, its like bottom 80 ftlbs, adjuster sleeve to 50 ft lbs, then top nut to 100 ft lbs...

see this thread of your adjuster thread breaks before it gets to 50lbs
http://www.pirate4x4.com/forum/showt...ball+and+joint
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post #4 of (permalink) Old 07-21-2003, 06:09 PM
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Re: Changing ball joints?How to set pre-load on top?

Sorry, I didn't read your entire post.

Here's the one I used



OTC Division of SPX Corp.
Ball Joint SpannerWrench
Order# OTC7080

$20.95 List Price
$12.57 On Sale!
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post #5 of (permalink) Old 07-21-2003, 06:23 PM
 
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Re: Changing ball joints?How to set pre-load on top?

Basically, the top and bottom ball joints both go into tapered holes, it's just that the top hole is in a threaded sleeve in order that preload can be put on the ball joints. As mentioned previously, you first tighten the bottom tapered stud into place, then install the upper sleeve and turn it clockwise to lower it down over the upper stud. It is tightened to a specific torque to create the preload on the joints and adjust for differences in dimensions of the parts. Once the upper sleeve has been screwed downward to 50 ft-lbs of torque (I base this on the advice of the others, my trw joints came with install instructions), you can now install the upper nut and tighten it in place simply as a fastener. So it's the torque of the sleeve that sets the preload, and the nuts are just there as fasteners, having been tightened appropriately as fasteners to hold the studs in the tapered holes. Thus the order of the procedure is important.

I used a chisel to get the old sleeve out, and a homemade socket to install the new one. If you can't adjust the sleeve, you've got problems. There's the odd guy out there who will tell you he couldn't remove the old sleeve, so he just left it in. That's not good.
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post #6 of (permalink) Old 07-21-2003, 07:24 PM Thread Starter
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Re: Changing ball joints?How to set pre-load on top?

"An odd guy"

I wouldn't call myself odd, maybe in a hurry without the proper spanner socket. Oh well, I guess I need some practice removing my knuckles anyway. You don't want to forget the basics.... Ha Ha.

Later,
Tom
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