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#11
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What tools do I need?
The bushings will normally have a *tiny* bit of play, that's where that 1
degree comes from. "DougW" > wrote in message news:3lGOg.12373$JR5.10944@dukeread11... > Troy wrote: > >> I read somewhere on a website about having it 1 degree lowered for >> axle wrap, but I'm sure I wont be able to judge a degree until I get >> the angle finder huh... I wish I had more time today to mess with it >> but I gotta be asleep by 7:30 to be up for work at 3am. ugh. > > By the way, there is no axle wrap with link suspension, only with leaf > springs. That's why they make traction and ladder bars. If your getting > axle wrap with a link suspension then the bushings are toast. > > Once the angle is set, the four links maintain that angle. (within reason) > > Anyhoo.. > > You should start with a full tank of fuel and no cargo > on flat ground (concrete) not on grass/gravel/or dirt. > > To measure the angle you place the angle finder on the output yolks > ear. i.e. side closest to the transmission case and side closest to the > diff. You measure one ear, rotate the shaft 180, measure the other ear, > and take the difference. Make sure the bearing cap is flat or you will > get an off reading. > > The difference between front and rear should be no greater than 1.5 > degrees. > > As for +1 offset, I dunno. My ZJ is bone stock and it reads about .5 > high at the rear on a full tank. > > -- > DougW > > |
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#12
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What tools do I need?
One more thing before I start...
The rear adjustable track bar, should I be setting the rear end where it is evenly under the jeep, as in the tires are both poking out the same distance from the sides or am I straightening the driveshaft when viewed from below? I notice that the pinion is a bit offset from center on the rear end and dont know if too much angle there could be causing some vibes... Oh I found an angle finder at home depot for $7.00, woohoo! Troy "Matt Macchiarolo" > wrote in message . .. > Remember that if you have a CV rear driveshaft with a slipjoint, the > pinion should be at the same angle as the driveshaft. If you have the > stock slipyoke (not recommended with a 4" lift) the pinion should be > parallel with the output shaft. > > And that friend now owes you a 12-pack. > > "DougW" > wrote in message > news:i8FOg.12365$JR5.10661@dukeread11... >> Troy wrote: >>> I have recently put on an adjustable rear track bar on my 4" lifted >>> TJ, and had to take off my upper rear adjustable control arms to get >>> some other stuff adjusted. When they were off a friend who was >>> watching/helping screwed them all the way down so now I'm having to >>> find the sweet spot all over again for my pinion angle. >>> >>> The problem is, I just can't seem to find it anymore. I eyeballed it >>> last time and there was a slight shake at 65mph, but now I just can't >>> find where they need to be. So I'm gonna get the angle tools to do >>> it, but I'm not sure which kind I need. An angle finder of some sort >>> I'm sure, but if anyone out there can tell me what to go buy so I can >>> measure my angles and get everything done perfectly I would be happy! >>> I'm tired of crawling under, adjusting, crawling up, opening the gate >>> to the yard, test driving, opening the gate again, crawling under, >>> etc etc etc. >> >> Simple angle finder with a magnetic base and a tape measure. >> http://www.vincihiperformance.com/vi...LE%20METER.jpg >> >> The trick is to get both upper links exactly the same length and keep the >> proper >> shaft angle while keeping the rear axle parallel to the front. You >> should be >> able to get close enough by measuring the links from center bolt to >> center bolt. >> >> -- >> DougW >> >> >> > > |
#13
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What tools do I need?
Troy wrote:
> One more thing before I start... > > The rear adjustable track bar, should I be setting the rear end where > it is evenly under the jeep, as in the tires are both poking out the > same distance from the sides or am I straightening the driveshaft > when viewed from below? I notice that the pinion is a bit offset from > center on the rear end and dont know if too much angle there could be > causing some vibes... offset is fine, just as long as the angles are the same. The control arms need to be riding properly with the vehicle on level ground and a full fuel tank. I'd probably measure the axle to frame at a couple of points then try to duplicate those with the new track bar, but since your lifting it might be better to use a plumb bob from a point on the frame to a mark on the axle. Remember to mark with some tape or a pen should the plumb bob fall off. I find a lead fishing weight and one of those powerful little magnets work fine. Although you could just tape the line to the underside or hang it off a frame member. -- DougW |
#14
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What tools do I need?
Ok cool. I adjusted it today to pretty close, within 2 degrees of being
straight, and it felt a lot better. The only way I can tell something is vibrating is when looking at the mirrors. Eyeballing it, I was waaaay off! I don't know how I did it before but it must have been one lucky guess. Thanks for the suggestions, I will measure and check everything out tomorrow and let ya'll know how it went. Troy "DougW" > wrote in message news:cvjPg.12523$JR5.11517@dukeread11... > Troy wrote: >> One more thing before I start... >> >> The rear adjustable track bar, should I be setting the rear end where >> it is evenly under the jeep, as in the tires are both poking out the >> same distance from the sides or am I straightening the driveshaft >> when viewed from below? I notice that the pinion is a bit offset from >> center on the rear end and dont know if too much angle there could be >> causing some vibes... > > offset is fine, just as long as the angles are the same. > > The control arms need to be riding properly with the vehicle on > level ground and a full fuel tank. I'd probably measure the axle > to frame at a couple of points then try to duplicate those with the > new track bar, but since your lifting it might be better to use a > plumb bob from a point on the frame to a mark on the axle. Remember > to mark with some tape or a pen should the plumb bob fall off. I > find a lead fishing weight and one of those powerful little magnets > work fine. Although you could just tape the line to the underside > or hang it off a frame member. > > -- > DougW > |
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