Dana 44 gear pattern

[Jetpilot03]

Just put in revolution 4.88. What do y'all think of this pattern? 18' Sahara LS Dana 44.
@The BFH Garage @chevymitchell
You guys have been a HUGE help, thanks!

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[Jetpilot03]

Do I need to increase PMD?

 

[CarbonSteel]

@chevymitchell + @grimmjeeper ^^^

 

[chevymitchell]

Just put in revolution 4.88. What do y'all think of this pattern? 18' Sahara LS Dana 44.
@The BFH Garage @chevymitchell
You guys have been a HUGE help, thanks!

Hmm... usually when the drive side is toe and the coast is heel, this indicates backlash needs adjusted.

What's the current backlash value and were the caps torqued when you looked at the pattern?

What are your PTQR value and TTQR values?

I'm literally doing gears myself right now. Lol. Just another day here in NC.

 

[grimmjeeper]

Hmm... usually when the drive side is toe and the coast is heel, this indicates backlash needs adjusted.

What's current backlash value and were the caps torqued when you looked at the pattern?

What are your PTQR value and TTQR values?

I'm literally doing gears myself right now. Lol. Just another day here in NC.

What he said. ?

 

[Jetpilot03]

Backlash is 6. I just hand tighted the caps didn't torque them yet.
Thanks for the help

 

[Jetpilot03]

My Torque to rotate is off. I'm at 10. I'll tighten that and run the pattern again.

 

[chevymitchell]

My Torque to rotate is off. I'm at 10. I'll tighten that and run the pattern again.

Excellent. That will change the backlash from a 6 to something tighter. Once you get it back to 6 or so, you'll be alright.

Be careful though. It'll jump from 10 to 35+ with a quickness.

 

[Jetpilot03]

Excellent. That will change the backlash from a 6 to something tighter. Once you get it back to 6 or so, you'll be alright.

Be careful though. It'll jump from 10 to 35+ with a quickness.

You ain't kidding. I think it went up 5lbs just looking at it ?

 

[Jetpilot03]

Excellent. That will change the backlash from a 6 to something tighter. Once you get it back to 6 or so, you'll be alright.

Be careful though. It'll jump from 10 to 35+ with a quickness.

Ok, on my third set up. My caps are torqued, torque to rotate is 15, backlash is 7. Pinion shim is .042. It looks like the coast side is too far toward the heel. What are your thoughts?

 

[chevymitchell]

Ok, on my third set up. My caps are torqued, torque to rotate is 15, backlash is 7. Pinion shim is .042. It looks like the coast side is too far toward the heel. What are your thoughts?

My real thoughts …? This is why I stopped installing Revolution gear sets years ago. I’ll only install Dana or Yukon now.

What was the etch on both pinions?

What was the factory shim amount?

Where are the shims located? Behind the bearing race or under the pinion head bearing.

 

[Jetpilot03]

My real thoughts …? This is why I stopped installing Revolution gear sets years ago. I’ll only install Dana or Yukon now.

What was the etch on both pinions?

What was the factory shim amount?

Where are the shims located? Behind the bearing race or under the pinion head bearing.

Factory shim was .042, the first pattern was set at .047. The shims are behind the race. Apparently I didn't write down the etch numbers any where. Pic of the old one below, looks like I'll be tearing down again ?

 

[chevymitchell]

Factory shim was .042, the first pattern was set at .047. The shims are behind the race. Apparently I didn't write down the etch numbers any where. Pic of the old one below, looks like I'll be tearing down again ?

Yeah...I'd keep making adjustments. There's something not right.

Is the race pounded in all the way?

 

[chevymitchell]

Factory shim was .042, the first pattern was set at .047. The shims are behind the race. Apparently I didn't write down the etch numbers any where. Pic of the old one below, looks like I'll be tearing down again ?

Also, be mindful how you're getting your patterns. Don't spin the pinion nut with a drill and socket.

Spin the flange by hand while providing as much resistance on the ring as you can. You can use a rag, hammer handle, or anything of the sort. I use a couple rags and push as hard as I can while spinning the flange by hand. If you don't provide resistance to the ring, the pattern will not be accurate or provide you good data for analyzing and corrective actions. If both pinions are 0 in the bottom left corner of the etch, then go back to the factory shim stack size, but with NEW shims. Then get a pattern with resistance on the ring and don't use the drill. The drill method will lie to you more than it will help you. Also known as the VA or Spectrum method. Lol

 

[Jetpilot03]

Also, be mindful how you're getting your patterns. Don't spin the pinion nut with a drill and socket.

Spin the flange by hand while providing as much resistance on the ring as you can. You can use a rag, hammer handle, or anything of the sort. I use a couple rags and push as hard as I can while spinning the flange by hand. If you don't provide resistance to the ring, the pattern will not be accurate or provide you good data for analyzing and corrective actions. If both pinions are 0 in the bottom left corner of the etch, then go back to the factory shim stack size, but with NEW shims. Then get a pattern with resistance on the ring and don't use the drill. The drill method will lie to you more than it will help you. Also known as the VA or Spectrum method. Lol

Thanks! I have been using the drill method with resistance applied. I'll run one by hand. Races all seated well.
I'm confused about the PMD. Install kit says reduce pinion shim size to move the coast side closer to the toe. It seems like I had the opposite effect?

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