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post #1 of (permalink) Old 08-31-2000, 12:23 AM
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Front Axle angles\"help\"

I have installed a reverse shackle kit on my 1975 CJ-5 and I need help setting up the proper angles. I live in Alaska so I don't have to many options as far as shops go(NONE!). My plan is to set the angles using the pinion angle as a means of measuring the proper caster of 3deg. Does anyone out there have a stock set-up who could measure their pinion angle on level ground so that I can get mine in the ball-park. I'm cutting off the spring pad and welding a new one on once I get the angle right. My axle is a DANA 30.
Thanks, and good wheel-in

Madd Mudder

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post #2 of (permalink) Old 08-31-2000, 10:52 PM
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Re: Front Axle angles\"help\"

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post #3 of (permalink) Old 08-31-2000, 11:17 PM
 
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Re: Front Axle angles\"help\"

Ideally, you'd want the correct castor and the (TC and axle) yokes on a parallel planes with each other. This does not mean the yokes pointing at one another, it means that if the TC yoke is pointing 5 degrees up, then the front differential yoke ideally should be pointing 5 degrees down. If you were to draw a line through and past the centers of the two yokes, these lines should be parallel to each other.

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post #4 of (permalink) Old 09-02-2000, 09:48 PM
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Re: Front Axle angles\"help\"

Jaffer
Thanks for the info, I had to use that to set the rear yokes. For the front I am only concerned with the caster, the offset of the pinions is not as important because I do little high speed wheeling in 4X4. Don't get me wrong, I would love to have the best of both worlds, but no one around here can rotate the axle tubes to do it right and my BFG's are wearing FAST. If I am lucky things may just work out. Right now I can think of only one way to set the caster in my situation, measure the yoke angle off a stock DANA 30 and go from there.

Any other ideals?????

Again Thanks for the reply.

Madd Mudder

post #5 of (permalink) Old 09-04-2000, 01:13 AM
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Re: Front Axle angles\"help\"

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post #6 of (permalink) Old 09-05-2000, 02:27 PM
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Re: Front Axle angles\"help\"

Will anyone help? I just need the angle of the front pinion.

post #7 of (permalink) Old 09-05-2000, 02:40 PM
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Re: Front Axle angles\"help\"

any positive caster angle will be ok, but you want about 6 degrees or so ideally. do a search on caster on you'll get lots of info...you can adjust the caster yourself with shims, or you could grind the welds and turn the knuckles. it's not that hard to do..ok.. it's a lot of work, but not hard to do. remember that as you turn the caster more positive, the pinion will point more and more down. i have never seen caster wear tires quickly though...every time i have had caster problems, the jeep wandered all over the road, but the tires wore ok

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post #8 of (permalink) Old 09-05-2000, 04:58 PM
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Re: Front Axle angles\"help\"

The note about the caster not wearing the tire down makes sense. I thought that it was the camber/toe that would wear the tires down pre-maturely. It would make sense that you either have a camber or a toe problem. Camber is effects how flat the tire sits on the ground (straight top to bottom) and toe effects how straight the tire is tracks (straight front and back). This might be a dumb question, but did you get the front end re-aligned after the shackle-reversal? If you did, take it back and have them check the alignment. Just a thought.. Bret

'56 CJ-5, 283, t-90(SM420 soon)/d18, 27(44 soon)/44, lift (suggestions?), 32's on order, cage.
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