Don't overlook the filter cover as there are a whole lot of them that don't fit real good and some also get egg shaped after while. If you smear a good layer of grease all around the contact point of that round cover, it will suck the grease in any spot that is leaking. I have known guys to put a back up washer( rubber band) so to speak, in the groove so O ring protrudes more for a seal.
As for that o ring between the split, it should not affect rear pump until the front pump quits supplying oil entirely, then it could possibly draw air back wards through that passage because the o ring in question is well forward of the rear pump and front pump is still trying to pull oil forward.
I used to put a bead of 515 loctite around the outside of that o-ring in the split as insurance to prevent leakage. There really is not tube as it is merely a spacer that sits in a recess to keep o-ring from collapsing.
You have a seal pressed into the rear housing on the rear pump suction tube behind the filter that can cause you problems as well , even though it is below oil level , the oil is churning right close to that seal due to the gear driving the pump gear.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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