1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Imediate Help Needed

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Old Jul 24, 2006 | 12:14 PM
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Imediate Help Needed

What size is the nut on the differential that holds on the pinion flange?
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Old Jul 25, 2006 | 12:18 AM
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No idea man, but here's a free bump...
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Old Jul 25, 2006 | 12:21 AM
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From: St Joe MO
Why do you want to undo that nut and do you know what you are getting into if you do? This is not one of those things you simply unbolt, then bolt back up.
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Old Aug 7, 2006 | 05:29 PM
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i heard it is
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Old Aug 7, 2006 | 05:41 PM
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I think it's a 22mm. You will need to tourque the nut back to 93 ftlbs.
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Old Aug 7, 2006 | 05:43 PM
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thanks...whats the procedure? Keep the tires on the ground and torque the nut?
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Old Aug 7, 2006 | 10:26 PM
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From: St Joe MO
I suggest you read the rebuild proceedure for the rear diff before you remove and install the pinion nut. I'm guessing you are changing the flange instead of the driveshaft?
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Old Aug 8, 2006 | 06:04 PM
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yes i am, arent the pinions direct swaps?
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Old Aug 9, 2006 | 03:27 AM
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Originally Posted by bad 83
I think it's a 22mm. You will need to tourque the nut back to 93 ftlbs.
its bigger thne 22mm. 28mm i think?
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Old Aug 9, 2006 | 07:57 AM
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I've never done this before but isn't there a special crush collar that needs to be replaced whenever you re-torque this on the diff ? You should read FSM before you mess with it.
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