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1992 580SK 4x4 front axle

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Bud

06-08-2003 07:17:18




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Re-assembling the swivel housings after installing new king pin bearings. It's the carraro with 2-pc bottom bearing. The factory service manual sends you thru a confusing process to set clearance for the housing with shims and seems to result in no clearance. Are they really just looking for .012 clearance with shims split equally top and bottom? Thanks for any input.




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jimks

06-08-2003 11:05:45




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 Re: 1992 580SK 4x4 front axle in reply to Bud, 06-08-2003 07:17:18  
You got it, the book basically takes you through a process to get and equal thickness of shims top and bottom, resulting in zero clearance or a bit of preload. (where did that .o12 number in your post come from?) Basically, you put both caps on, leave the top cap loose maybe 1/8" away from the steering knuckle. Tighten the bottom cap against the steering knuckle. Tighten the top cap carefully until you feel a fair amount of drag when turning the steering knuckle ( think the book gives a torque spec on this- it's only to get the right preload on the bearings). Measure the gap between the top cap and the steering knuckle, divide that number by two, and that's the thickness of shims you should put under each cap top and bottom. If the number doesn't come to something you can easily come to with the shims you have, round it down as it won't hurt anything if the steering knuckle is a bit tighter... better too tight than too loose. Hope this helps.

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Bud

06-08-2003 13:40:58




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 Re: Re: 1992 580SK 4x4 front axle in reply to jimks, 06-08-2003 11:05:45  
Jiinks.....Thanks for your response. I wrongly assumed that it needed some free play. I asked the mechanic at the only dealership in my neck of the woods (boonies) and he seemed to think the .012 that they tell you to add in the book was the free play. I haven't done one of these before and I don't think the local (90 miles away) Case dealer has either. They knew nothing about replacing the tie rod adjusters that go between the tie rod end and the steering box shaft. Is there a way to remove these short of buying the $135 crowfoot that Case says to use ? Thanks much for your knowledge.

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jimks

06-08-2003 21:49:32




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 Re: Re: Re: 1992 580SK 4x4 front axle in reply to Bud, 06-08-2003 13:40:58  
yeah, those are no big deal to replace as long as you have a big pipe wrench, a big crescent wrench, and maybe some big open end wrenches. First you take the nuts off both tie rod ends and hit beside them with a big hammer to release the taper lock. Hold one adjuster on one side with a wrench and brace it against the axle, and put another wrench on the adjuster on the other side and break it loose. One adjuster or the other will break loose- doesn't matter which one, and it doesn't matter if the steering cylinder rod turns, it won't hurt a thing. If the adjuster you want to replace breaks loose first, you're good to go. If the adjuster on the other side breaks loose, then go ahead and remove it, and now you'll be able get a wrench on the flats of the cylinder rod to hold it to remove the oposite adjuster. Have fun.

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