How fast can oil move from transaxle to center section?

Wardner

Well-known Member
On early TA tractors (specifically F-400), how fast should the oil move from the rear frame (transaxle) to the center section (TA and clutch housing)? And what is the pathway?

I ask this because I pulled the 3/8" plug on the bottom of the center section and only got about 6 quarts and then it stopped without the slightest flow. I had assumed there was a flow through the unshielded IPTO ball bearing at the joint between the two large castings. I want to use the bottom plug (located in the IPTO driven gear bottom cover) of the center section to supply oil to the Borg-Warner clutch pump that I recently installed. It runs off the front of the crankshaft.

I wanted to send the return oil to the rear frame for cooling purposes. It looks to me that it will have to go the check level plug on the center section as I will quickly run out of oil.

I was always under the impression that there was only one fill point (spare shifter opening cover) for both parts of the tractor and it took fifteen gallons.
 
Was the rear end full when you started to drain?

If the fuild was to low it would not flow to that section
 
The check level plug reading on the rear frame was down about an inch last spring. The tractor was on a level barn floor.

I am currently working outside. The front end of the tractor is about two inches higher than the rear. I can't check that same plug now because it has been converted to an oil pickup for another hydraulic pump. That pump runs the hydraulic creeper.
 
Sitting level the oil has to come through the front countershaft bearing, when the transmission is turning oil splash from the constant mesh gears sends some oil into a trough and through a passage to the t/a unit and it drains down into the center section. Front pto drive shaft needle bearing behind pto drive gear will limit flow to the very front also.
 

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