Farmall M Auxiliary Hydraulic Oil Tank

Ken Christopherson

Well-known Member
Ok everyone. I just finished mounting the Farmhand loader on my M. Currently the loader only lifts about half as high as it should (5-6 feet of the brochure's listed 12 feet) and then seemingly runs out of fluid to push it up further. It came with the auxiliary hydraulic oil tank. In one of the photos (that I pulled from Craigslist prior to me purchasing the loader), it shows a larger hose that looks like it would have connected to the bottom of the hydraulic oil tank and maybe to the Lift-All fill. I did not get this hose with the loader when I purchased it, however (previous owner said the hose was long gone). Does anyone know - can I just mount the oil tank near the fill of the Lift-All and run a hose from the outlet of the oil tank to the oil fill on the Lift-All pump to give it extra fluid capacity? (It won't damage the Lift-All will it with seemingly being over-full)? I have looked over the brochure and it shows on the cover the loader is mounted on the Farmall H, and the auxiliary tank is mounted near the front of the tractor. It also shows that on a Farmall C they have the auxiliary tank mounted near the touch-control, but it doesn't show how it is plumbed into the system. I took a couple closeups of the pictures of the loader on an H in the brochure - it seems there is a hose that runs back from the tank to where the Lift-All fill tube is. Enclosed are photos I have.

Any help is appreciated.
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ken , if the aux tank has a vented cap, then use a non vented cap on the fill pipe for the lift all pump, otherwise you will loose fluid out the vent on the liftall pump fill cap. i would just run a hose from your aux tank and connect to the pump fill pie. either a pipe tee or elbow. i think that is 3/4 pipe, so a quick trip to farm n fleet for a lenght of 3/4 hydraulic hose with pipe thread ends.
 

If that loader has 2 way cylinders, you need to just top off the reservoir when the loader stops going up. Raise the loader again, and top off the reservoir again, until you have reached maximum lift. The excess oil will go back into the other side of the cylinders, and will never over-flow.

I have a FarmHand F11 on my Farmall M. I'm using only the belly pump as a reservoir. The belly pump holds just 6 quarts, but by topping off the reservoir when the loader stopped lifting, I was able to reach the maximum lift height of 17 feet.
 
Glennster,

Thanks for the reply. I think that this is the method I will use - mounting the tank and using some 3/4 hose threaded to the top of the filler pipe. The hyd tank does have a vented cap, so I think I will plumb it in directly (without a T). I don't anticipate using the hydraulics for anything else other than the loader.
 
(quoted from post at 13:55:26 07/21/16) They are only one-way cylinders.

But do those cylinders have 2 hoses on them? One at the bottom, and one at the top? If so, the top end of the cylinder is being used as a reservoir. That is how the McCormick #30 and #31 loaders are set up.
 
Nope. Just one hose per cylinder at the rear. The other end of the cylinder cannot be used as a reservoir because there are no seals (only felt wipers to remove dirt from the rods as they retract into the cylinders).
 
(quoted from post at 15:16:10 07/21/16) Nope. Just one hose per cylinder at the rear. The other end of the cylinder cannot be used as a reservoir because there are no seals (only felt wipers to remove dirt from the rods as they retract into the cylinders).

Okay. That is why Farmhand supplied the reservoir tank.

If you've never owned a tractor with a loader, you're going to fall in love with it.
 
Rusty,

I did own a 1940 M years ago that I installed a JD 45 loader on. It was very useful, especially with the big snows we get here in the North. Worked very well for moving dirt around as well. I can't wait to try this loader out in the snow. It is the same loader my grandpa had on his 1940 M. Essentially, I am recreating that tractor (as it is no longer in the family, and I haven't been able to track it down). Thanks for your help!
 
Glenn,

I did get it figured out. Also was a bit humbled throughout the process. Took the fuel line off at the carb, turned the gas on. Nothing. Took the fuel line off at the bowl, turned the gas on, still nothing. Climbed up on the tractor to look in the tank to see if the outlet was plugged (even though I just cleaned and coated the tank).... Nope. Clear of any obstructions - but I also noticed it was clear of any GAS! I think my buddy that is storing the tractor forgot to tell me he borrowed some gas to put in his B to mow the grass, lol. I KNOW I put 10-12 gallons in it, and there is no way I have burned through it all in the short amount of running I have done so far. Ah well.. At least it was simple. Next time, though. I'm going to look in the tank FIRST.
 
(quoted from post at 13:32:51 07/23/16) Glenn,

I did get it figured out. Also was a bit humbled throughout the process. Took the fuel line off at the carb, turned the gas on. Nothing. Took the fuel line off at the bowl, turned the gas on, still nothing. Climbed up on the tractor to look in the tank to see if the outlet was plugged (even though I just cleaned and coated the tank).... Nope. Clear of any obstructions - but I also noticed it was clear of any GAS! I think my buddy that is storing the tractor forgot to tell me he borrowed some gas to put in his B to mow the grass, lol. I KNOW I put 10-12 gallons in it, and there is no way I have burned through it all in the short amount of running I have done so far. Ah well.. At least it was simple. Next time, though. I'm going to look in the tank FIRST.

A few years ago I decided that using my M to plow the garden would be good for the M. I checked the oil, looked in the radiator, checked the air pressure in ALL the tires, and then hooked onto the plow and headed for the garden. I got all lined up, pulled the rope on the plow, and then pulled back the throttle on the M. Went about 25 feet, and the M stopped dead in her tracks. YEP, I'd checked everything but the gas tank.
 

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