Hydraulic Pump Suction

Anonymous-0

Well-known Member
have a Deutz 7120 that has the hydraulic pump sitting on left side of tractor about starter height (attached near front of motor) I have to test it then I am thinking remove it and get it fixed/repaired - then I got to thinking - with the pump that high ....how does the oil get to the pump? does a hydraulic pump like that have enough suction to lift it from the lower tranny level through 15' of line and even during winter?

next thought - long story on what happened to this tractor but I have no 3 point at all (put the lever up and in 20 minutes with no load on the arms it will eventually raise..... no remotes.... anyway the previous owners took off a loader - removed the power beyond - then just plugged the 2 holes instead of connecting them for flow through - then the tractor sat for a year - i got to thinking that maybe the gears have broke the key on the shaft - power steering does still work for those of you deutz owners....what are the odds of this actually happening you suppose?

(Also posted this on the Allis board just in case a few more Deutz experts are there)
 
A hydraulic pump does not "suck", it push's.
when operating it creates an absence of pressure
and atmospheric pressure, being higher, push's
oil into the inlet. They are not designed to
suck good, and the longer the line, the harder
to get oil, and the pump could starve, and get
damaged. gravity flow, tank outlet higher than
pump inlet, is best !
 
Could you please explain that in plain English!!!!!
Hydraulic pumps are either vane or gear pumps that are positive displacement pumps. Look it up.
Walt
 
ChrisLSD,
I work for a guy that has a 7120. The hydraulic system has its own reservoir, seperate from the transmission, that is filled from the back. The opening is above the top link and to the right. The plug turns out of the opening and has a dipstick attached.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top