Rear ECGS Dana 60 Pattern Check

[Bigfoot-NM]

@hosejockey61
@Blackjack


Pattern 1

ECGS Rear Dana 60
ARB Locker
5.38 Dana Spicer gears (new)
Pinion Depth = .055 Depth Shims under the bearing race.
Pinion Preload = 17 inch lbs. and .060 preload shims
Backlash = .004 (I know I need to open it one or two thousands)

Can you please provide input on the first pattern for this set up?

Thanks

 

[Woodrow]

@hosejockey61
@Blackjack


Pattern 1

ECGS Rear Dana 60
ARB Locker
5.38 Dana Spicer gears (new)
Pinion Depth = .055 Depth Shims under the bearing race.
Pinion Preload = 17 inch lbs. and .060 preload shims
Backlash = .004 (I know I need to open it one or two thousands)

Can you please provide input on the first pattern for this set up?

Thanks

View attachment 585391View attachment 585392

It looks deep, especially on the drive side. I don’t run a pattern until my backlash is in spec. In this case, I’d do that before changing anything with the pinion.
Disclaimer: novice opinion, like most of us here.

 

[hosejockey61]

It's deep. Try removing 3-5 thou and re-run

 

[Bigfoot-NM]

@hosejockey61
@Blackjack


Pattern 2

ECGS Rear Dana 60
ARB Locker
5.38 Dana Spicer gears (new)
Pinion Depth = Removed .005 - .050 Depth Shims under the bearing race now.
Pinion Preload = 20 inch lbs. and .055 preload shims
Backlash = .008

Can you please provide input on this pattern for this set up?

Thanks

 

[hosejockey61]

@hosejockey61
@Blackjack


Pattern 2

ECGS Rear Dana 60
ARB Locker
5.38 Dana Spicer gears (new)
Pinion Depth = Removed .005 - .050 Depth Shims under the bearing race now.
Pinion Preload = 20 inch lbs. and .055 preload shims
Backlash = .008

Can you please provide input on this pattern for this set up?

Thanks


View attachment 585437View attachment 585438

First off, don't worry about pinion pre-load shims until final set-up. Just tighten the pinion nut until you get some resistance on the yoke.

Next, Your coast side looks to be in the ball park but your drive side still looks deep. Take out another 5 thou and see what it does.

 

[Blackjack]

Mike is on the money here. Make life a bit easier and do not worry about exact pinion preload until you are finalizing the setup. Pull another.005 and let’s see what happens.

 

[Bigfoot-NM]

@hosejockey61
@Blackjack

Pulled another .005" out. Backlash is at .006"

 

[hosejockey61]

That's starting to come in nicely now. Now you need to experiment with another 1-3 thou less. You are very close now. If you pull 3 and it shows as shallow, then you know you are within 2 thou of the best it will be. It seems like a lot of extra work, but it's worth it in my opinion.

 

[Bigfoot-NM]

@hosejockey61
@Blackjack

Pulled .002" out. Backlash is at .007"

 

[Blackjack]

Still just the tiniest bit deep. Go a couple thou more and let’s see if the pattern flips.

 

[Bigfoot-NM]

@hosejockey61
@Blackjack

Pulled .002" more out. Backlash is at .007"

 

[hosejockey61]

Sorry to leave you hanging, really busy day at work for me. It looks like the addition of the 2 thou in fact caused it to go shallow by 1 or maybe 2 thou. If you have a shim combination that will let you add 1 thou, do it. If you don't, I would use the pattern prior to adding the two thou to this one. Great job sticking with it.

 

[Bigfoot-NM]

Sorry to leave you hanging, really busy day at work for me. It looks like the addition of the 2 thou in fact caused it to go shallow by 1 or maybe 2 thou. If you have a shim combination that will let you add 1 thou, do it. If you don't, I would use the pattern prior to adding the two thou to this one. Great job sticking with it.

Just to clarify. I removed .002 and posted the patterns. Blackjack said it still looked a little deep and suggested removing .002.

I removed another .002 and that is the last pattern I posted.

So, now I should add .001 if possible or .002 and go back more toward the first pattern I posted when I removed the first .002.

Thanks for all your help.

 

[Bigfoot-NM]

@hosejockey61
@Blackjack

Added .001" to pinion depth. Got backlash to .007

 

[hosejockey61]

Boom that's it! Glad you had the patience to see it through

This is a good example for all to see how persistence and patience pays off. It's amazing the difference 1 thou can sometimes make.

Kudos to you!

 

[Bigfoot-NM]

Thank you for your help! Definitely a learning experience. I enjoyed walking through all the steps.

 

[hosejockey61]

Thank you for your help! Definitely a learning experience. I enjoyed walking through all the steps.

I've never heard anyone say they've enjoyed setting up gears

 

[Jezza]

Yet some people still wonder why the good shops charge so much to set up gears.

 

[Illiquid]

I've never heard anyone say they've enjoyed setting up gears

my whole upper body hurts from doing a set last night....i can confirm I did not enjoy a single bit of it.