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  #1  
Old August 20th, 2020, 20:54
Chillipepperlq9 Chillipepperlq9 is offline
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8.25 gear wear pattern

Struggling a bit with my gear set up, has anyone had a pattern like this? Looks like the drive side is pretty high on the toe. How do I correct this? I can't find a lot of literature on this patter and I used the pinion depth tool to calculate the right shims for pinion depth. See the pictures below.

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  #2  
Old August 21st, 2020, 05:45
RCP Phx RCP Phx is offline
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Re: 8.25 gear wear pattern

The first thing you need to do is pull a good pattern. You need to apply more pressure on the gears and get a pic of both the drive and the coast side.
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Old October 14th, 2020, 17:48
Chillipepperlq9 Chillipepperlq9 is offline
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8.25 gear wear pattern

Well I played with it a little today, I started at .025 then moved up to .035 and .0455 eventually to see how it changed. All at around the same backlash of .007. You can look at the pictures but what is driving me crazy is that it seems like the Drive side doesn't change from the top toe corner.

I used a pry bar to apply pressure.

Any thoughts?

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  #4  
Old October 14th, 2020, 18:27
RCP Phx RCP Phx is offline
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Re: 8.25 gear wear pattern

Definitely not enough resistance on the gears, you got to check back-lash on clean gears. I don't see where your anywhere close.
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  #5  
Old October 14th, 2020, 18:30
RCP Phx RCP Phx is offline
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Re: 8.25 gear wear pattern

Btw, how much pre-load are you using?
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  #6  
Old October 14th, 2020, 18:39
Chillipepperlq9 Chillipepperlq9 is offline
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Re: 8.25 gear wear pattern

Quote:
Originally Posted by RCP Phx View Post
Btw, how much pre-load are you using?
Pinion bearing 15 inch pounds, 70ft pounds at the carrier bearing. Yeah I am definitely doing something wrong, ill recheck everything and try again. Will report back.

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Old October 14th, 2020, 19:06
denverd1 denverd1 is offline
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8.25 gear wear pattern

Is this a pattern? Looks like you painted the gears and took pictures

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  #8  
Old October 14th, 2020, 19:08
Chillipepperlq9 Chillipepperlq9 is offline
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Re: 8.25 gear wear pattern

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Originally Posted by denverd1 View Post
Is this a pattern? Looks like you painted the gears and took pictures

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Haha thanks I try to be a bit artistic, no but seriously I am trying to every tip and everything that is out there. I do admit I have no experience doing this but you can only learn one way. I appreciate all the help


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Old October 14th, 2020, 19:09
denverd1 denverd1 is offline
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Re: 8.25 gear wear pattern

Quote:
Originally Posted by Chillipepperlq9 View Post
Haha thanks I try to be a bit artistic, no but seriously I am trying to every tip and everything that is out there. I do admit I have no experience doing this but you can only learn one way. I appreciate all the help


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Keep on bro. Just keep keepin' on

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  #10  
Old October 15th, 2020, 09:26
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WAZZUXJ WAZZUXJ is offline
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Re: 8.25 gear wear pattern

Stuff a rag against the ring gear to create some drag so you can get a better contact pattern.

Are these new gears?
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  #11  
Old October 17th, 2020, 07:37
XJAbroad XJAbroad is offline
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Re: 8.25 gear wear pattern

Also dilute your marking compound down some with a little wd40 or equivalent and apply thin layers. No need to cake it on.
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  #12  
Old October 18th, 2020, 07:41
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4x4JeePmaNthINg 4x4JeePmaNthINg is offline
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Re: 8.25 gear wear pattern

as said is these new gears?
what did you use for a starting point and how did you determine this?

once you find out what is too much and too little backlash you can adjust accordingly. same with pinion depth. It takes some time to go to both ends of the spectrum and narrow that down. stay with it!
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