No Oil Petcocks on M Oil Pan

eye4iron · Oct 10, 2017

I was looking at a 1940 Farmall M the other day and I noticed it did not have the two oil level petcocks on the oil pan. It did have what looks like a dip stick on the right side of the engine block. I did not pull it to see if it was a dip stick but the top of it had a wingnut type head on it. The engine had the early large style oil filter canister.
So my question is: Was this normal on early Ms or was this a combine engine in a M?

Ellis Kinney · Oct 10, 2017

I think that the M engine used for generators and sawmills, basically non farm use, had a dipstick and no petcocks. Probably a replacement engine from another application. Ellis

DeltaRed · Oct 10, 2017

Power unit engine that was transplanted.However,MDs used a dipstick(at least mine does).

D beatty · Oct 10, 2017

It could even have have an engine out of a 400 or 450 in it.

redforlife · Oct 10, 2017

Pet cocks were the original deal. Probly a transplant engine from either a newer tractor, or a stationary engine.

eye4iron · Oct 10, 2017

It may be it is not the original engine. I think in those years the engine serial number was the same as the tractor. I'll have to check the next time I see the tractor.

AlinMO · Oct 10, 2017

Only the oil pan may have been replaced.

D Slater · Oct 10, 2017

No engine serial number or serial number not starting with a prefix FBKM is from something else or a replacement block or engine. Should also have a block cast # 6722DC above oil filter. Depending how early or late in 40 the C on end of DC could be off a letter. During 400 production they started being built without check holes in oil pan unless kerosene or distillate. Later pans will bolt on a M engine if some other way to check oil is used. Like a dipstick added or a block replaced with or for one.

eye4iron · Oct 10, 2017

D Slater I did not understand your first sentence. My thinking was if the engine serial number and the tractor serial number didn't match then the engine is not original. I have two 1944 H Farmalls and the engine and tractor serial numbers are the same per tractor.
I did notice someone else scraped off grease and dirt above the large oil filter and there were casting numbers there. I should have wrote them down.

D Slater · Oct 10, 2017

At one time new replacement blocks sold by IH didn't have a serial number stamped on them unless added by installer. Original M C-248 engine serial numbers started with a prefix FBKM before the number. Blocks or engines from power units or other type tractors may have a different letter in prefix before serial number or no prefix before serial number if later than early 52. Lots of 40 model M tractor and engine numbers did match but not always. When MD tractors started being built the engine and chassis numbers started spreading out.

Old weldor · Oct 10, 2017

I was told they sold aftermarket kits to put a dipstick on an m. I had a 43 m with a dipstick and petcocks on the pan.

No Oil Petcocks on M Oil Pan

eye4iron

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Ellis Kinney

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DeltaRed

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D beatty

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redforlife

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eye4iron

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AlinMO

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D Slater

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eye4iron

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D Slater

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Old weldor

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