10-20 Engine Noise

C Fitz · Dec 11, 2017

Tractor sat for 5 years, recently got running and ran great. It's has great oil pressure, but started hearing a bad noise, sounds like a low growl is best I can explain it. Bad enough where it stalled engine . It freed back up and was able to get back to shed. Took the 2 inspection ports out, everything getting oil , and rods looked good. I'm fearing rear main bearing? Any help appreciated . It's a 1937 thanks

leon · Dec 11, 2017

To me, low growl sounds more like front gear train than main bearing. Other opinions? Got something, even a big screwdriver to listen at the handle while setting the blade various places on the engine, to use to help identify the location of the noise?

Oldiron29 · Dec 11, 2017

I had an F-20 That had a growl turned out to be rear main bearing.

oldhammerhead · Dec 11, 2017

MY 10 20 had sat for more than 30 years, but the engine was loose, When I got it took engine covers off and with an oil can started oiling front and rear bearings and rod bearings. and rolling engine. For about a month before I removed the oil pan,

moll · Dec 11, 2017

To check it, see if the growl goes away when you clutch it.
If not, those ball main bearings will sure growl, I have a W-30 doing the same thing.
We had a 10-20 years ago that you could see the front crank pulley go up and down by
pulling out on the fan belt. It didn't growl.

C Fitz · Dec 11, 2017

What concerns me is that it gets louder as it runs, in neutral is well, and feels like it's seizing up and bogs engine down.

C Fitz · Dec 11, 2017

Sounds to me like it's coming from rear of engine by #4 piston

leon · Dec 11, 2017

I't missed me that the mains are ball bearing. Sure, those can growl!

10-20 Engine Noise

C Fitz

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leon

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Oldiron29

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oldhammerhead

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moll

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C Fitz

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C Fitz

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leon

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