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Need some help with differential whinning


chiefmd

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  • 2 weeks later...

Got the diff all back together today. Tightened down the pinion nut per Jon's instructions. My question is how much force should it take to rotate the pinion. I put a electronic torque wrench on it and it

takes about 35 lbs to rotate the pinion shaft. The FSM state about 20 lbs. Should I back off the pinion nut a little?

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Pinion nut torque shouldn't change the torque to spin the pinion. The resistance comes from the distance between the two tapered roller bearings. If you have significantly more resistance than that, the most likely cause is the pinion seal dragging on the pinion flange. Did you grease it? Did you seat the ball bearing and the seal all the way?

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