4650 trans pump flow test

fordfx413

Member
I'm trying to flow test a trans pump on a 4650. I have the inlet of my flow rater connected to the outlet of the filter relief valve housing and the outlet of my rater connected to the oil cooler inlet hose. That's what the IT manual said to do anyway. I do not have any oil flow though my flow rater. I should be getting oil because the tractor hydraulic functions work ok. Or is there another way to plum it? I also pulled the trans pump drive shaft and it has a 1/4" bend in it.
 
Hooking into the large line on the left side the one that feeds the front pump would be the place..If the shaft has been "challenged" there must be something going on,,maybe the diff pin is working in and out,,it lines up with the pump shaft and the PTO shaft...it can also knock the back of the trans pump off...
 
OK. Just plumb in my flow rater between the outlet of the clutch/pto operating valve and the line that feeds the pump? I'm going to install a new shaft. I didn't know if somebody had split it without pulling it and bent it or not. maybe there is other issues. About 1500 rpm and up you can hear it wine and feel it under your feet.
 
If it has had the larger pump installed they will whine a bit,,you may want to run a bore scope in through the bung hole and take a look...if you have a diff pin moving around the sooner you deal with it the better..
 

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