Gear pattern: a different perspective

[hosejockey61]

Excellent. Thank you ! One more question , locktight on carrier cap bolts ?

no. Clean the bores/threads with brakleen and blow it out/dry it real good.

 

[Peppergat]

no. Clean the bores/threads with brakleen and blow it out/dry it real good.

10-4

 

[Blackjack]

Yes on the loctite. If they say 150, then go 150. Most shimmed pinions give a range of 160-210.

Pattern looks great!. Nice work sticking with it.

This.

Excellent. Thank you ! One more question , locktight on carrier cap bolts ?

Yes

 

[Peppergat]

Working on the Dana 30 this morning. Pinion depth at .065 - preload at 18 inlbs- backlash at .011. Looks to me like the pinion depth is a touch deep.

 

[Rickyd]

What does it look like if you tighten up backlash? There seems to be a discrepancy between factory backlash(6-10) and some later literature (10-15) for yukon. What gears?

 

[Peppergat]

What does it look like if you tighten up backlash? There seems to be a discrepancy between factory backlash(6-10) and some later literature (10-15) for yukon. What gears?

Revolution gears. They say between 6-10 for gear lash. I can snug up the backlash and see what it looks like.

 

[Peppergat]

Alrighty then …. Backlash at .008. Pinion still seems too deep.

 

[Rickyd]

Alrighty then …. Backlash at .008. Pinion still seems too deep.

View attachment 406833

View attachment 406834

It could be a little deep. Remember on a low pinion front the coast side of the gear is now the drive side. Having it way off the outside of the ring isn't optimal. I'd be making changes to get that towards the root

 

[Peppergat]

It could be a little deep. Remember on a low pinion front the coast side of the gear is now the drive side. Having it way off the outside of the ring isn't optimal. I'd be making changes to get that towards the root

10-4

 

[Blackjack]

It is a tiny bit on the deep side but on a LP front I would run that.

 

[Peppergat]

It is a tiny bit on the deep side but on a LP front I would run that.

Should I go ahead and adjust the pinion depth a bit ?

 

[pcoplin]

I would run that for sure as is.

 

[Peppergat]

Just for heck of it , I got the backlash adjusted to .006. I think it looks a tad better on the drive side.

 

[Rickyd]

Coast side looks a lot better than you started

 

[Blackjack]

That also lets you see a bit better that you are on the deep side.

 

[Peppergat]

I’m going to back the pinion up a bit and see what it looks like.

 

[Peppergat]

The issue with decreasing pinion depth is that the smallest shim I have is .010. So that’s what I just removed. That puts the depth at .056 which is the slinger thickness.
These are with the backlash at .008. The pinion preload is at 16. I think I need another .005 deeper on the pinion

 

[Blackjack]

Yeah I would put the other shim back in, shoot for .008-.010 backlash and let er rip.

 

[Peppergat]

Yeah I would put the other shim back in, shoot for .008-.010 backlash and let er rip.

10-4.

 

[Rickyd]

There is no way for you to arrange the shims in such a way to only remove .002-3" Total? Rather than just removing the .010"