Great write up. If I can share two corrections from the Toyota Service Manual:
1. From the "Filling" section
Quote:
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Originally Posted by jp213a
Coat the plug threads with anti-seize.
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The service manual for the 100 LC/470 does not specify to add lubricant or anti-seize to the treads of the fill and/or drain plug. I would not recommend this step as vibration could loosen the plug(s) with catastrophic results.
2. Also from the "Filling" section
Quote:
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Originally Posted by jp213a
Install the drain plug and torque to 35 foot-pounds.
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Quote:
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Originally Posted by jp213a
Install the fill plug and torque to 35 foot-pounds.
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The service manual specifies only 27 ft-lb of torque for both the fill and drain plugs in the rear differential. Again, this is a "dry" tread specification (no tread lubricants).