Junior Member
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Join Date: Dec 2022
Location: Murrieta
Posts: 27
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Junior Member
Join Date: Dec 2022
Location: Murrieta
Posts: 27
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From a person who has done this...
the Toyota manual shift transfer case does indeed have an oil pump that is driven from the input shaft only. This pump, pumps oil thru the input shaft gear group, and the bearing between the input and rear output shafts. However, when the transfer case is in neutral, the input shaft gear group is not turning at all, so it doesn't need any oil. The bearing where the front input and rear output shafts meet, is still turning because the front shaft is stationary, but the rear output shaft is being turned by the rear wheels via the driveshaft. But in looking at it closely, there is NO pressure on this bearing at all because it is all freewheeling with no torsional load. Plus it appears that this bearing is still getting some splash lubrication, along with the front and rear output shafts, from the gears and chain spinning in the oil bath at the lower part of the case.
So my take, after research, repeatedly checking the case temps while towing with an infrared temp sensor, and several thousand miles of experience, is no problems, and it works great! As a plus, I did check with my Toyota service writer last week. Although Toyota does not allow towing of any of their vehicles, he said that he knows of quite a few being towed, and has never heard of a transfer case failure.
So I am gonna go with the folks that are doing this for real. I appreciate everyones concern but if we could get back on track with the push top start and a way to keep the steering wheel unlocked I would appreciate it.
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