Joined: Mar 2017

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I installed a used set of gears and Eaton posi. I have a irregular howl under 40 on acceleration and deceleration. When turning right at speeds above 20 I get a solid howl/whine. What could have gone wrong, I read the pattern as the below. Any suggestions?

Joined: Aug 2017

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From: Buffalo, NY

Recheck the backlash and pinion depth, hearbpattern needs to be checked with differential under load (parking brake or manual resistance) with used gears it’s more important to check the coast side and not drive side patterns. What brand gears?

Joined: Mar 2017

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Yukon gear set, backlash was at .004 preload at 19in lb. When I checked my pattern I did not do it under load, so I bet the depth is off. Thank you

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From: Detroit

Joined: Mar 2017

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Tested, just not under load see above applying braking , thanks/no thanks for your help.

Joined: Aug 2017

Posts: 227

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From: Buffalo, NY

Hope you get it sorted out. I’ve always had best luck with motive gears. Randy’s rib and pinion is also a valuable source to go to for information. Did you happen to do the solid spacer or crush sleeve?

Joined: Mar 2017

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Using crush a crush sleeve, pattern as it was:

Joined: Aug 2017

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From: Buffalo, NY

Joined: Mar 2017

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I’m I reading this right as in the pinion is still too deep?

Joined: Mar 2017

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Drive side