Posted by Bob on September 22, 2018 at 21:41:01 from (64.255.159.199):
In Reply to: Pull start a deisel posted by mattcatlin on September 21, 2018 at 19:05:27:
Quoting Removed, click Modern View to see
Leroy, you are a bit CONFUSED. When pull-starting a synchro DEERE the transmission topshaft is turning,driving the transmission oilpump, and all is well.
You could drag it around all day long with no issues with the engine turning..
The problem comes to be when towing the tractor in one of the "neutral" positions.
When doing that, gears are idling on the transmission topshaft, which is stationary and the the shaft and gears are running steel-to-steel while not being lubed.
Since it's a "collar shift" transmission, there's no bushings needed or used between the steel gear and the steel shaft.
When you correctly place the shifter in "TOW", all shift collars on the lower shaft are disengaged, so nothing above the lower shaft is turning or needing lube, and all is well.
"TOW" has NOTHING to do with disconnecting the transmission from the engine.
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