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John Deere Tractors Discussion Board

Re: no oil pressure

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Posted by F-I-T on November 27, 2012 at 02:37:59 from (

In Reply to: no oil pressure posted by Josh cartey on November 26, 2012 at 14:12:44:

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I went back and read your original post from July, and you were not getting any pressure then. Did you do anything to determine why it is not pumping? Or did you just change the oi, and hope that the tractor elves would stop by and fix it? Sorry to be cute, but what have you done since July to solve the oiling problem? Running, even for a minute, with no pressure, which you know you don't currently and did not have back in July, is just making a parts tractor for some one else.

It's time to take these many good suggestions, and rule out problems systematically. First, DON'T RUN THE ENGINE UNTIL YOU GET IT TO OIL! Next, remove the cover over the crankshaft so that you can see that the oil pump drive coupler is intact and that the oil pump shaft turns when you rotate the engine. Next, verify with air pressure or some other engine, that the gauge you have does indicate correctly. Turn off the gas, ground the plug wires so you don't start a fire, and remove the plugs so you can spin it over pretty fast. If it the pump drive is turning, if it is filled with oil, if the filter canister is not cracked so as to allow oil to vent out of the top of the canister without getting to the lines, if the screen is not clogged beyond imagination, oil should pump even when turning over by hand/starter.

Now...did you have the pressure adjusting spring/reed apart? Make sure is it intact and correctly assembled, but don't run it anymore until you get it to oil. That's one of the simplest little regulated pump systems you can find. It can only go wrong in a few places.


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