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Height Of Oil Reservior On Loader Tractor

K

KCTractors

Member
Location
Central Wi
I have to put a front pump on a Allis D-17 with a loader and where I want to mount the oil reservoir, it would be about 2" lower than the pump, that would be the top of the tank. Will that work or does it have to be higher than the pump?
The control valves will be above the oil tank also. I guess I'm worried about oil coming out the breather .Any suggestions?
 
Oil usually flows by gravity to the top of the pump. Bottom of the tank should be higher than the tank, easy to do if you mount the tank in front of the radiator, or alongside the tractor, above the pump. D17 front mount sits pretty low....should draw fine with the tank level, or above.....my WD reversed loader is like that. Doesn't matter how hi/lo the valves are....they are pressure fed.
 
The level of the oil in the tank must be substantially (10 inches) above the intake of the pump. If not the pump will loose prime, and end requiring effort to get it going every time. the oil could fluctuate in use to somewhat below the inlet, (not best) but it would be possible to loose prime even then. Jim
 
When I did a loader on a JD 420 with front pump, I used an air brake tank off a semi, mounted vertically on the upright post of the loader, under the loader valves. Nice short runs of hose that way, and the tank was out of the way.

Yes, you do need to mount tank so bottom is above the pump so gravity can do its job.
 
The loader frame itself doesn't have a reservior in part of the frame? I had an D14 and loader, and the internal hydraulic system itself handled a 4 way, slow, but did the job.
 
You might think this is funny...but..Hydraulic pumps are designed to PUSH, not SUCK. A spinning
pump creates a low pressure..atmospheric pressure
pushing on the oil in the reservior, causes it
to flow into the lower pressure area where gears,
vanes, pistons, exert force on it to create pressure.
So idealally, you want gravity flow to the pump.
 
Davis/Massey Ferguson loaders used the loader frame as the resevoir...It all st above the pump and was very neat.
Sam
 
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