Thanks for your explanation of the Farmall M hydraulic system. Now I have several more questions;
1. Since this is a one-way system, I assume the right and left hydraulic ports connect to two seperate cylinders. Both cylinders would raise by hydraulic pressure and lower by gravity?
2. In taking a closer look, I noticed there is a 1/2 inch threaded connection just below and slightly to the front of the right side hydraulic connection. It appears to be plugged with dirt and grease. Any idea what this is for?
3. As for the hydraulic control lever, I'm not sure it's working properly. With engine off, the lever is resting in the forward position. Pulling it back towards the steeing wheel it pivots about 20 degrees until it hits a stop. When released it flops back to the forward position. I don't sense any stop or detent to hold it in the middle position. Is this normal?
4. What are the requirements for hydraulic fluid, how much and what is the proper fill level? Also, should the system be flushed before filling?
5. Is there a good way to tell if the hydraulic system is working without investing in lots of expensive equipment?
6. If adding a 2-way valve to make it a two-way system as you described, I assume that would mean hydraulic connections to both ends of the cylinder(s). If so, doesn't there have to be a return path from the 2-way valve back to the reservoir and if so, how would this be implemented?
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Today's Featured Article - More Memories of a Field Service Engineer - by Brian Dye. Introduction: The author worked for one of the largest Ford tractor dealerships in England as a trouble-shooter on tractor engines, hydraulics and combine harvesters from 1963 to 1972. In 1972 he became a dealer manager and finally left the dealer net in 1975 to run his own electronic design and manufacturing company. [Editor] We live right in the middle of Norfolk. The dealership that I worked for sold Fordson Tractors from the 1920's and some of t
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