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Alignment specs

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Old Dec 2, 2015 | 02:13 PM
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Default Alignment specs

Just wondering how my alignment specs look? Is passenger side considered left side. The reason I ask, is my passenger side lower control arm is about 3/16" longer than drivers side. This would match my spec sheet. If, I shorten my passenger side control arm to match my drivers side is going to mess up my toe?
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Old Dec 2, 2015 | 02:42 PM
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Originally Posted by GunDude
J Is passenger side considered left side.
Right and left are as if you were standing in back of the vehicle looking forward.
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Old Dec 3, 2015 | 05:08 AM
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Looks good leave it alone.
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Old Dec 3, 2015 | 06:47 AM
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Originally Posted by kjeeper10
Looks good leave it alone.
Agree. It's common to have a little less caster on the driver side. Helps the vehicle track straight on the road as most are crowned.
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Old Dec 3, 2015 | 07:20 AM
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Originally Posted by Invest2m4
Agree. It's common to have a little less caster on the driver side. Helps the vehicle track straight on the road as most are crowned.
I often question that theory. Mine tracks straight with equal caster settings, left and right.
No mention in the service manual of one side having to be different from the other. In fact, it says it's preferred they be the same. However, because of manufacturing tolerances, they can be different by no more than 0.65°.

The OP's caster readings are different, but within tolerance for maximum difference.
The only reading out of spec is the left camber. It's not enough out to be worth the effort to correct. Many come from the factory like this.

Road crowns vary greatly. Aligning for road crown would most likely be a frustrating endeavor.

Last edited by ronjenx; Dec 3, 2015 at 07:25 AM.
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Old Dec 3, 2015 | 07:30 AM
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Originally Posted by ronjenx
I often question that theory. Mine tracks straight with equal caster settings, left and right. No mention in the service manual of one side having to be different from the other. In fact, it says it's preferred they be the same. However, because of manufacturing tolerances, they can be different by no more than 0.65°. The OP's caster readings are different, but within tolerance for maximum difference. The only reading out of spec is the left camber. It's not enough out to be worth the effort to correct. Many come from the factory like this. Road crowns vary greatly. Aligning for road crown would most likely be a frustrating endeavor.
Adding larger wider tires exaggerate the pull from crowning of a road that you probably wouldn't feel if running stock or similar.
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Old Dec 3, 2015 | 07:44 AM
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Originally Posted by Chuck-The-Ripper
Adding larger wider tires exaggerate the pull from crowning of a road that you probably wouldn't feel if running stock or similar.
That doesn't change how the axle is made at the factory, with equal caster settings being preferred. I have seen no evidence the axles are made to compensate for road crown.
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Old Dec 4, 2015 | 07:16 AM
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Just looking at the sheet....
It seems to me that on a perfectly flat road, the jeep would pull driver just a bit...
Am I reading this wrong?
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