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Re: no oil pressure

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Author  [Modern View]

11-27-2012 10:34:54

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Ok then. Here's where you start, from above post:

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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Josh cartey

11-28-2012 11:21:41

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 Re: no oil pressure in reply to F-I-T, 11-27-2012 10:34:54  
I have looked at it and it appears to be a broken coupler. Looks to be cracked looking through the crankcase cover. Bout to tear it apart to fix. Thanks for the help everyone! It's been quite a few years since I worked on one. Just needed a little refreshing.

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11-28-2012 11:35:51

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 Re: no oil pressure in reply to Josh cartey, 11-28-2012 11:21:41  
no problem to drop pump and put another coupler on but you might need a helper.cant be under tractor and on top at samwe time.

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11-28-2012 11:27:04

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 Re: no oil pressure in reply to Josh cartey, 11-28-2012 11:21:41  
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Josh, depending on the temperature, it could have broken because excessive water in the oil. Ice can break those couplers which act as sort of a "fuse" so that you don't do other damage. Check for water/ice in that pump when you drain it.

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