M Hydraulics Question

WI Dave · Jun 14, 2009

What can you tell me about my hydraulic set-up based on this picture? As far as I know, I've got one-way hydraulics, but I'd like to know what the second hose is for if I only have the one-way lift. Seller didn't know. It's a 1941 M.
This is my first tractor with remote hydraulics, so I apologize if this is a dumb question.

dmemmer · Jun 14, 2009

RETURN

armand tatro · Jun 14, 2009

You could power a hyd. motor hooked that way but you would have no reverse on the hyd. motor. You could also plumb into a two-way valve mounted on a piece of equipment or some hyd. dump wagons stored oil on the back side of the dump cylinder and that hose plumbed to the fill(top) hole would return oil to the pump to get more lift on the wagon. More questions? Feel free to ask. Armand

john d · Jun 14, 2009

Not a dumb question at all. You do have single-acting (one-way) hydraulics.
That sort of setup was what we used when we ran a hydraulic motor on an auger. Oil under pressure comes out of the lower port, can go through a motor, and come back into the reservoir through the top hose.
Someone might have used the top hose as a vent on the non-pressure end of a cylinder. A simpler idea is to use a "breather" plug on the other end of the cylinder.
You can remove the top hose, plug the open fitting where it goes into the fill pipe, and operate a cylinder just fine.

WI Dave · Jun 14, 2009

I've seen some old plows with lift cylinders on them, and some of the cylinders have 2 hoses and some have only one. Do the plows with 2 hoses need a tractor with two-way hydraulics to work, or would my set-up work OK? Would my tractor be compatable with the single-hose cylinders or would I have to remove the tractor's top hose and plug the fitting?

mkirsch · Jun 15, 2009

Dave,

You could use a plow cylinder with two hoses. Just hook the top hose into the return line. It'll still be one way, but the cylinder will be venting into your tractor's belly pump.

OR

You could make your setup two-way pretty easily. Get an open center two-way hydraulic valve (around $100). Mount it somewhere convenient. Connect the hose coming out of the side of your M to the IN port. Connect the return hose to the OUT port. Get two more hoses. Run these from the work ports on the two-way valve to the couplers at the back of your tractor.

john d · Jun 15, 2009

If the plow is set up to lower by gravity, you can operate it just fine with your single-acting setup. The second hose on the cylinder would not be needed if you put a vent plug in the other end of the cylinder. Your tractor will run a single-acting cylinder with or without that hose that runs to the fill pipe on your lift unit. Unless that hose is returning oil to the reservoir from a motor, you'll likely never need it.

M Hydraulics Question

WI Dave

Member

dmemmer

New User

armand tatro

Well-known Member

john d

Well-known Member

WI Dave

Member

mkirsch

Well-known Member

john d

Well-known Member

Similar threads