TL;DR - After replacing the transmission seal on the transfer case input shaft, my leak disappeared for about three months. But, it's back, so I need to replace the seal again. When replacing the seal in the transmission where the input shaft of the transfer case connects to the output shaft of the transmission, I was super careful to ensure that I aligned the two components so the shaft wouldn't mar the surfaces of the seal. Or so I thought. I've got the same leak as before, so I'll be doing the job again. Oh, joy! Still dripping.
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TL;DR - The seal in the transmission that accepts the input shaft from the transmission is leaking and needs to be replaced. At the same time I noticed the slow leak at the rear diff, I also noticed a drop of gear oil on the transfer case skid plate. A quick inspection led to the seam between the transfer case and transmission - a cavity that should be dry. More often than not, a bit of oil leaks into this location, with the probability increasing if the two components have ever been separated. After noticing the gear oil, I added a…
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TL;DR - the new transfer case seems to be working great so far. After the input shaft bearing in my transfer case gave out on a trip to Death Valley, I quickly picked up a new (to me) transfer case from a local junkyard and swapped it into the Tacoma. My priority - of course - was to get back out on the trail as quickly as possible. So far - some 5500 miles later, seems thing to be really great. As in, the replacement transfer case seems to be in much better shape than mine had been for the…
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TL;DR - I have oil leaking from the transfer case where the front drive shaft attaches. The truck is subjected to a lot of muddy water crossings and over time that muddy water gets in the various seals and things start to leak. That has happened on one of the transfer case seals, so I'll need to replace the seal between the transfer case and the front drive shaft. The part number for this is Transfer Case Oil Seal - Inner Front Drive Shaft (90311-41012) and I'll also need to replace the Transfer Case - Front Drive Shaft Stake Nut (90179-22016) at the same…
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