Gear Pattern Check

[Bud125]

Now doing the rear axle on my 2004 Rubicon. 4.88 Revolution gears. I am not stating it but I check the rotational resistance every time to insure it is in spec. Learned that from the front axle.
This is the best pattern so far, maybe just a touch deep?
Backlash is 8 thou.
I really appreciate all input, this forum rocks.
@hosejockey61

 

[hosejockey61]

Now doing the rear axle on my 2004 Rubicon. 4.88 Revolution gears. I am not stating it but I check the rotational resistance every time to insure it is in spec. Learned that from the front axle.
This is the best pattern so far, maybe just a touch deep?
Backlash is 8 thou.
I really appreciate all input, this forum rocks.
@hosejockey61

View attachment 690597

View attachment 690598

Not a touch deep. It's shallow. Add 5 thou and take a look.

 

[Bud125]

Not a touch deep. It's shallow. Add 5 thou and take a look.

Haha, so much for my pattern reading abilities! Will do and thanks!

 

[Bud125]

Added .005 to the pinion. Backlash is at 8 thou.

 

[hosejockey61]

Added .005 to the pinion. Backlash is at 8 thou. View attachment 690852View attachment 690853

Looks like you are still 2-3 thou shallow.

 

[Bud125]

Ok, I will try 3 and report back.

 

[Bud125]

I added the 3 thou and was able to run a quick pattern before work this morning. I was beginning to question my backlash because it wasn’t changing that much with my pinion adjustments. But I measured it in 3 places around the ring gear and it ranged from.0075 to almost.009 so it is what it is. I also double checked everything else, bearing caps were tight, rotational resistance was in spec.

 

[hosejockey61]

You are probably 1 thou deep. If you can't make that change then run it as is.

 

[Bud125]

Great, I will check what I have for shims after work and see what I can do. As always, appreciate your help!

 

[Bud125]

Just to wrap this up, I do not have the shims to reduce .001 so I will run this. I am happy with the backlash and the preload so hopefully a good balance. Now to get it all back together and start breaking them in. I have other maintenance to do, like getting the Johnny joints taken apart and greased up before the axle goes back in but getting closer! Super happy to be getting this done, Thanks for all the help!