Been in South Texas most of my life. Mostly Aransas Pass. Used to love the Summer when young but not so much anymore.Are you new to South Texas?It's like this every year. The really hot weather doesn't get here until later this month and through August into September. I'll be 74 in October. I'm looking forward to Winter when it drops down to the 50s and 60s.
Wished it were that simple. I appreciate the thought though. I'am sure that probably happens a lot. The oil pickup on these 3t84 engines have a very fine wire mesh that could be suspeteible to clogeing if oil got contaminated.
newbury
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Yeah, similar conditions in north Mississippi.
When I lived in northern Vermont people used to pay for such conditions, they called it a "going to the sauna".
oldnslo
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And those same people probably complained when weather outside was those conditions…
careyo63
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I think this yours. For a 3810 Oil pump. Oil pan Pickup tube OP-1423
rScotty
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Bear with me as I try to think of how to check out the oil circulation system without endangering the engine from lack of oil. When an engine starts, oil pressure is almost instantaneous when all is working right.
The advantage to that 12 volt electric pump idea to do the oiling is that you know it is working, and it is easy to plumb to pull suction oil from either the engine sump or from an extenal sump.
There is some history in favor too. Electric pumps are used for pre-oiling in aircraft and race engines.
The easiest place I can think of to see if oil is flowing is to take off the valve cover. Oil to the rockers and shaft doesn't have a dedicated return, it just escapes from clearances on the shaft, falls to the top of the cylinder head, and returns to the sump via various passages - mostly past the pushrods. So the oil to the rocker shaft is easy to see in action, if messy. Pistons and rings are splash lubed...which just leaves the drillings to the timing case cover gears and the bottom end - rods and crank end bearings.
My guess is either the drilling that ports oil to the timing gears is wonky....or else - and more concerning by far - the babbit bearings on the rods are blocking the holes in the rod big ends.
And if an electric pump is too much hassle, consider using an air pressure lube "shooter" to force oil into passages. Amazon has a variety of shop air powered oilers. Some of those look to me like they could be adapted.
rScotty
newbury
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Nope, when I lived there - up until the mid-70's it had never gotten as hot as it gets in Mississippi.
careyo63
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Md. to now Ga.. Org. WV.. Been here for decades and the heat is rough on me! Esp. this time of the Yr. Today 96deg. High humidity.
Agvg
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Should be no problem to remove the oil filter and run it for a few seconds on the starter, just the compression doesn't put any load on the bearings, probably a nice oil film there anyways.
Okay Gents, Time to Fess up as we say in Texas. I found my problem and it was operator era. Yeah I made a mistake. One of many in my 76 years.
The main bearing holders can be put in backwards and as luck would have it that's what i did. Oil was not building pressure as it was flowing with no resistance at all. I know it is hard to visualize but that is my problem. It took me about 45 minutes to split tractor and pull engine. I thought I could push the pistons up far enough to get the crankshaft out without pulling head and knocking pistons out but once again as luck would have it (no luck). Had to remove head and pistons to get crankshaft out. Going to call Fredricks Monday morning and get another set of the two center main bearings. It will be late next week before I get parts and a couple days to get back together. I will let you know how it turned out. As a side note, when I put the main bearing holders in the first time I studied the parts diagram to try and get it right. The diagram was a little confusing and then Yanmar stamps a F on the main bearing housing which I thought stood for front but low and behold the F faces the Rear. O well not trying to place blame elsewhere. It was this Dummie's mistake, and their you have it. I appreciate all the support I got from this group. Thanks again...
The main bearing holders can be put in backwards and as luck would have it that's what i did. Oil was not building pressure as it was flowing with no resistance at all. I know it is hard to visualize but that is my problem. It took me about 45 minutes to split tractor and pull engine. I thought I could push the pistons up far enough to get the crankshaft out without pulling head and knocking pistons out but once again as luck would have it (no luck). Had to remove head and pistons to get crankshaft out. Going to call Fredricks Monday morning and get another set of the two center main bearings. It will be late next week before I get parts and a couple days to get back together. I will let you know how it turned out. As a side note, when I put the main bearing holders in the first time I studied the parts diagram to try and get it right. The diagram was a little confusing and then Yanmar stamps a F on the main bearing housing which I thought stood for front but low and behold the F faces the Rear. O well not trying to place blame elsewhere. It was this Dummie's mistake, and their you have it. I appreciate all the support I got from this group. Thanks again...
California
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Thanks for the followup!
Maybe F means Flywheel???
Related trivia, Yanmar calls the cylinder nearest the flywheel the #1 cylinder, a carryover from their more significant marine diesel manufacturing.
Maybe F means Flywheel???
Related trivia, Yanmar calls the cylinder nearest the flywheel the #1 cylinder, a carryover from their more significant marine diesel manufacturing.
rScotty
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Nice. I'm glad you found a reason, and looking forward to hearing how it finally turns out.
SPYDERLK
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OP and 0 pressure indicate flow w/o resistance. But a blockage before the pressure sensor would just be relieved w/o notice. Makes sense.
careyo63
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Delt with a lot of Pool Spa hotub pumps etc. and a self-priming pump is a centrifugal pump that has the ability to draw liquid from a level underneath its suction port without an exterior priming aid. The name of a self-priming pump represents that it has the capability to prime itself. For this reason, the accessory priming chamber or the housing must have adequate liquid to prime the pump. My guess. Bad pump could be very well possible.
Main brng holders were turned around letting oil from oil galley shoot on the outside of the holder instead of going inside bearing cap and pressureing up
