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Farmall & IHC Tractors Discussion Forum

Re: Farmall M, hyrauics, (3) questions

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Author  [Modern View]
used red mn

11-16-2019 09:54:57

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I donít have a tractor here to measure, but if your dipstick is lost the level should be about 10Ē down from the top of the nipple that the pipe reducer is screwed on as a cap on your tractor. The previous owner just added that to make a larger opening to hit when adding fluid. I am attaching a link to the M CaseIH online parts page of the lift-all pump, hopefully that will clarify some of your questions. From there or in your picture of the left side you posted you will see that the large odd shaped cast piece sticking out of the bottom of the tractor is actually the bottom of the pump. There is a drain plug in that shown as 16 on the parts page. Since it sounds like you donít know the previous or current condition of the system it would be best to pull the plug and drain to make sure there is no water in the system. Then I would add 2 quarts of hydraulic fluid (303) will be fine. IH originally called for 10 weight non-detergent, but these tractors came out before hydraulic fluids were widely available. The reason for starting with 2 quarts is your pump drive seal may be bad and it will just leak out any way. Make sure the 3 pressure outlets are plugged or capped snuggly. Start your tractor and run at idle with the clutch out. Pull the rod back and if all is working right you should hear a hydraulic type whine of the pump pressuring up against the plugged outlets. This will not hurt the pump because it has an internal pressure relief. This is no different then when a cylinder is connected to the system and it comes to the end of its full lift stroke. However, when raising an implement the operator can pull the rod into the lift position where it will stay. Then when the cylinder is fully extended the lift control rod will kick back to center hold position against the nub on the rod. If you seem to get no response then either you control is not engaging through the side of the tractor properly or the drive from the transmission has been removed to disable the lift pump. We can reply from this point in a different post. Sorry this is long, but I am just trying to add detail for you. I have no idea where you are in computer knowledge but I would not recommend trying to view the IH parts page on a smart phone. It just doesnít work that well. And if you feel like you want to reference it later I would suggest to bookmark it. It is not real easy to find by searching their parts site.

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