Gear Pattern Help, please. - JeepForum.com
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post #1 of 66 Old 11-23-2018, 05:23 AM Thread Starter
jeepster258
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Gear Pattern Help, please.

I'm in the process of setting up my gears. I'm a little confused on reading the pattern. Here are some pictures of what I have. What do you guys think what adjustment needs to be made. Backlash is at .009 on those photos.

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post #2 of 66 Old 11-23-2018, 07:58 AM
fracturedapple
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I have only set up a few diffs but what I see is your pinion depth isn't right. The pattern should be closer to the center of the teeth on the ring gear.



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post #3 of 66 Old 11-23-2018, 08:56 AM
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Yup what he said ^^^^ you are riding on the edges there. Get it more in the center

2006 LJR...the madness begins again
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post #4 of 66 Old 11-23-2018, 12:03 PM
Jerry Bransford
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X3, you don't have enough pinion depth. Decrease the pinion bearing's outer shim thickness, increase the inner shim thickness.

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post #5 of 66 Old 11-24-2018, 06:09 AM
Joe Dillard
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The pattern doesn't look quite symmetrical either.

Did something get bent?

Is the ring gear seated on the carrier correctly?
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post #6 of 66 Old 11-25-2018, 09:31 AM Thread Starter
jeepster258
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Ok thanks for the help, here what I have now after about 8 trys. This ones backlash is a little too loose. I will tighten that up. What does everyone think of it now?
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post #7 of 66 Old 11-25-2018, 01:34 PM Thread Starter
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Here is a PDF of my progress
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post #8 of 66 Old 11-25-2018, 01:36 PM Thread Starter
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post #9 of 66 Old 11-25-2018, 03:12 PM
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Quote:
Originally Posted by Jerry Bransford View Post
X3, you don't have enough pinion depth. Decrease the pinion bearing's outer shim thickness, increase the inner shim thickness.
+1

If you cannot fix it with a hammer then it has to be an electrical problem.
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post #10 of 66 Old 11-25-2018, 03:18 PM Thread Starter
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Here is a link to a PDF of the changes I have made. https://drive.google.com/file/d/121Y...w?usp=drivesdk
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post #11 of 66 Old 11-25-2018, 03:19 PM
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Quote:
Originally Posted by jeepster258 View Post
Ok thanks for the help, here what I have now after about 8 trys. This ones backlash is a little too loose. I will tighten that up. What does everyone think of it now?
Still too shallow I think.

Id go back and try your .053" again. Put more resistance on the gears when your turning them to take the pattern, it will make it easier to read.

Keep at it, you're getting there

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post #12 of 66 Old 11-25-2018, 03:49 PM
Jerry Bransford
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Quote:
Originally Posted by Trevlaw View Post
Put more resistance on the gears when your turning them to take the pattern, it will make it easier to read.
X2.

When you have a choice, buy American made.
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post #13 of 66 Old 11-25-2018, 03:51 PM Thread Starter
jeepster258
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Thanks for your opinion, it is very appreciated. I do wedge a piece of wood between the ring and housing and the flange is pretty hard to turn. Should the compound be applied thick or thin? I turn it back and forth across the paint 3 or four times.

Last edited by jeepster258; 12-06-2018 at 04:02 AM. Reason: typo
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post #14 of 66 Old 11-25-2018, 04:00 PM
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Originally Posted by jeepster258 View Post
Thanks for your opinion it is very appreciated. I do wedge a piece of wood between the ring and housing and the flange is pretty hard to turn. Should the compound be applied thick or thin? I turn it back and forth across the paint 3 it four times.
I stuff a bunch of rags between the ring gear and the housing, might give that a shot. Your most recent pattern is pretty clear but the pic of the .053 isn't, just enough to see that the depth might be good enough. So I'd redo that a get another picture of that up. Might try in between the. 053 and .058 as well as keeping the same depth and changing the backlash to see what that does for your heel/toe position

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post #15 of 66 Old 11-25-2018, 04:10 PM Thread Starter
jeepster258
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Ok sounds good. I will put it back to .053 and try to get a better visual. I guess im learning that a ton of pressure is needed to get a good reading. Thanks for sticking with me on this.
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