Re: Curious about a Farmall M's hydraulics and stu

Posted by Nat 2 on April 25, 2007 at 06:05:25 from (64.80.108.53):

In Reply to: Re: Curious about a Farmall M's hydraulics and stu posted by Patrick Martin on April 25, 2007 at 00:47:35:

Patrick,

You seem pretty excited. Calm down and let's take things one at a time. Once you get the tractors home you'll have all the time in the world to assess the situation, figure out how things work, and figure out what you're going to do.

M's come with a "belly pump." It is driven off the transmission, so when the clutch is pushed the pump stops pumping. It's capacity is 6 quarts as I recall, not much.

The belly pump is a one-way system, pressure up, gravity down. In its day, light years ahead of lifting by hand or just dragging the implement home from the field.

When you see two hoses, that means someone added a two-way valve to the tractor. The two-way valve redirects the fluid to give pressure in both directions. These are very easy to add, but will cost you a couple hundred dollars for the valve and hoses.

The belly pump has three ports, two on the left, one on the right. They may be plugged or they may have quick connects. It's very easy to add quick connects yourself, and I recommend it. All three ports are controlled by the rod on the right side. Pull the rod, and two ports lift simultaneously, the front on the left and the right port. Hold the rod and when the cylinders are fully raised, the rear left port starts to lift. It's a delayed lift for the rear "tire track scrubbers" on a front-mount cultivator. You almost never use the rear left port.

Live hydraulics involve an engine-driven pump that mounts in front of the distributor. Since the engine is turning the pump directly, you always have hydraulics even when the clutch is pushed. Unless you are very lucky, neither of your Ms has live hydraulics. It wasn't available when the tractors were new, and only a few were added later on. Adding live hydraulics is EXPENSIVE, costing at least $800 for the pump, hoses, valve, and reservoir. I would NEVER buy a used pump, only a new IH pump because these pumps are not rebuildable. An old pump is probably worn out. It's not worth the risk.

Hopefully this makes things clearer. Good luck!

Replies:

• Re: Curious about a Farmall M's hydraulics and stu Patrick Martin 17:00:21 04/25/07 (0)
• Re: Curious about a Farmall M's hydraulics and stu georgeky 07:16:54 04/25/07 (0)

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