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Old 10-30-2010, 11:42 AM   #1
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Pinion rotating torque wrench

I'm setting up my first ring and pinion and I have to set the pinion rotating torque to 10-15 in-lbs. My smallest torque wrench only goes down to 30 in-lbs and I can't find one that goes lower! Also, I assume the torque wrench would be 1/4" drive. Do I just use a couple adapters to get from 1/4" drive wrench to 1/2" drive socket or am I needing a specialty tool?

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Old 10-30-2010, 01:10 PM   #2
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I used adapters on mine to step it up from 1/4". I have a small beam style 1n/lb torque wrench I got off ebay but you can probably find one at Harbor Freight.

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Old 10-31-2010, 10:52 PM   #3
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Just curious what axle? As a general rule of thumb I use 30in.lb. for the rotational torque most axles.
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Old 11-01-2010, 01:07 PM   #4
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It's a Dana 35c running 4.10 under a 90 YJ 2.5l manual. 4" lift on 31" traxxus A/Ts. All the ring & pinion literature I've read says 10-15 in-lbs for a used gear set or 20-25 in-lbs for a new set. I think I'm going to order a beam type wrench from Napa unless I can find a dial type. Thank you for everyone's input!
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Old 11-01-2010, 04:29 PM   #5
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If you are installing used pinion bearings 10-15 in. lb. is correct according to some aftermarket gear Mfg.
According to the Dana literature 20-40 in.lb. is the new bearing preload, and they do not list any specs for used bearings.
FYI Pinion preload is measured after the pinion is rotating and without the axles or differential installed.
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