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Hyd. Res. overflows on SM

D

DTK

Member
SM w live pump and prince flow divider and char lynn ps
forces hyd. Oil out breather cap on add on hyd. Res. in cold
weather upon start up. Does not do this in warm weather.
Extra hyd. Res. on top of fact. Res. tractor has loader with s.a.
Cyl. On main boom and. Hyd. Bucket. Sorry for long post.
Thanks DTK.
 
With the temperature affecting the oil viscosity, my suggestion is to increase the diameter of the oil connection to the tractors reservoir from the aux reservoir. This could be a second plumbed line to a T in the drain of the tractor reservoir. The fluid could also be thinned using Hytran fluid in place of what is in it. Jim
 
Put a "T" in the belly drain port. Then, use this "T" as both the intake and return to the pump.

Works slick.

Allan
 
What long post, yours is a short post, not long enough to provide all information needed. Noe do not know on that tractor but Ford 3 cylinder 4100 (high 4000) when had bad filter in resivor did that.
 
After mkt. res. plumbed into top of fact. Res. under gas tank. I am already using hydran. Thanks for replies. Any other help would be appreciated . DTK.
 
Have 3/4" press. Line &1" return line . 3/4" between add on res. and fact. Res. could put tee between reservoirs. I think ps pulls oil out of lower factory res. faster than it can run back from add on res. to fact. Res. any other ideas? Thanks DTK
 
Where is the return line inlet to the reservoir in relation to the breather cap? Could try putting a T in the line from the bottom of the add on reservoir to the top of the factory reservoir. Plumb the return line into that T. I would think that would fix your problem.
 
T the 1 inch return line and run a 3/4 inch from it to the bottom of the factory res. This puts return fluid into both at the same time rather than force all of it through the 3/4 to the factory res. Jim
 
The return flow must enter the lower reservoir. With single acting cylinders the fluid is drawn out of the lower reservoir until the upper reservoir is empty and air enters the lower reservoir. When there is no demand on the system the oil circulates to the pump and back to the reservoir. When the single acting cylinders are retracting there is still no demand on the system for new oil, but you have additional returning oil. It the return flow from the cylinders enters above the lower reservoir the only way the oil can get down there is to also allow air to return to the upper reservoir. If that transfer cannot occur fast enough the upper reservoir will overflow while there is still air trapped in the lower reservoir.
 
No offense meant here DTK, but the difference in typing between "fact." and "factory" is two whole keystrokes, and would have made your post much much much more easily understandable. I sat here for 10 minutes scratching my head wondering what these "facts" were that you kept talking about...

I assume your "fact." reservoir is in fact the belly pump.

Your problem is the oil is being sucked out of the belly pump faster than it can flow from your auxiliary reservoir back into the belly pump.

The simplest solution is to abandon the belly pump and use only the auxiliary reservoir. How big is the auxiliary reservoir? You might just be able to get away with it.
 
Thanks for all the helpful replies. If I get time I will try to post pics. Of the hyd.setup on the SM. Thanks again DTK.
 
(quoted from post at 14:26:00 12/08/14) Thanks for all the helpful replies. If I get time I will try to post pics. Of the hyd.setup on the SM. Thanks again DTK.
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