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Tractor Talk Discussion Forum

1937 Centaur tractor

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MHMJD47

07-06-2014 20:34:59
173.22.224.127



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Centaur tractor, 1937 with LeRoi engine does not have oil pressure after last ran in a few years and stored inside. Ran fine a few years ago. Could this engine need primed, how? All 4 cylinders are loose and block is not cracked. Was stored without any fluid in radiator. Any experience or suggestions on why no oil pressure?




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Steve@Advance

07-07-2014 07:59:40
108.245.66.82



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 Re: 1937 Centaur tractor in reply to MHMJD47, 07-06-2014 20:34:59  
It most likely has lost prime, especially if it had oil pressure before it was stored. Some engines have the oil pump above the oil level in the pan. This happens when all the oil drains back down and the pump is dry.

A couple of solutions are to start it and rev the engine and hope to get pressure. A risky move since everything is dry.

The other is to remove the oil pressure gauge tube and pressure feed oil back through the system. This can be done with any means of pumping clean oil under "some" pressure. A new, clean pump up sprayer will work, or anything you can rig up to pump clean, light oil.

Just adapt a fitting into the block, pressure it up for an hour or so, then replace the gauge fitting and see if it gets oil pressure.

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Just Another Old Geezer

07-07-2014 05:09:03
66.222.96.2



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 Re: 1937 Centaur tractor in reply to MHMJD47, 07-06-2014 20:34:59  
Step one. Pull the line off of the oil pressure gauge and see if oil comes out. I have had oil pressure gauges fail to read pressure.



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sms

07-07-2014 03:20:24
24.161.115.45



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 Re: 1937 Centaur tractor in reply to MHMJD47, 07-06-2014 20:34:59  
Don't know much about it but have heard of engines losing oil prime after sitting. Maybe dirt/sluge in check valve or something?



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