Posted by Deutz Lover on May 29, 2018 at 18:38:18 from (174.218.137.13):
In Reply to: multimeter rant posted by 47fivewindow on May 28, 2018 at 12:28:24:
Hobo,
I was being generous compared to some of the posts. I am referring to tractors when I said it would help with the mundane which is most problems where there are obvious things to check. It makes these types of problems a lot easier, faster, and some problems cannot be diagnosed without one.
It's that five percent that makes the vom an extremely valuable, non negotiable item.
The other are ways to check circuits, but sometimes a noid light, circuit light, replacing suspect fuses, or touching a device to see how warm it is just won't do. I speak specifically about 12 volt DC systems. These are the quick checks person does in the field before going to find where they last left their meter.
1.So if you have an ignition problem. One check is to remove the spark plug wire to see if there is any spark. No spark. Check high tension wire coming off coil.
2. Use an insulated screwdriver to manually break points to see if there is a spark.
3. Use a pair of pliers to recrimp possibly loose connectors.
These are diagnositic techniques used to localize problems.
A continuity light can be used as a diagnostic technique, but a vom is better. It's when all the other quick diagnostic techniques fail. That is why I have four VOMs. More or less.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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