John Deere B 1941 oil change - no oil pressure and smoke

DaveJD · Oct 19, 2021

Hi All,
I changed the oil and filter in my Dad's 1941 B. Still lots of work to do I think. Seems to be no oil pressure and quite a bit of smoke. I welcome any thoughts on next steps. Video here:

https://www.youtube.com/watch?v=GsnHqFJLaH0

Thanks

Pete in MD · Oct 19, 2021

Did you have oil pressure showing on the gauge before you changed oil/filter?

Do you have an Operators Manual?

J.Wondergem · Oct 20, 2021

Temporary hook up a gauge that you know that works, for the first step.

wore out · Oct 20, 2021

(quoted from post at 18:07:09 10/19/21) Hi All,
I changed the oil and filter in my Dad's 1941 B. Still lots of work to do I think. Seems to be no oil pressure and quite a bit of smoke. I welcome any thoughts on next steps. Video here:

https://www.youtube.com/watch?v=GsnHqFJLaH0

Thanks

WHY would you continue to run if it didn't build oil pressure within 20 seconds? You sure weren't doing the main and rod bearings and other moving parts any good!

Remove the crankcase cover and check for a broken oil pump coupling, sludge-clogged screen that surrounds the oil pump and damaged oil lines or oil filter "head".

The oil pump coupling is a square part that joins the oil pump shaft to the upper pump drive shaft that's driven from the camshaft.

Debris entering the pump or cranking the engine in freezing weather with water settled in the pump will break the coupling (as will any other situation that seizes the pump gears).

John Deere B 1941 oil change - no oil pressure and smoke

DaveJD

New User

Pete in MD

Well-known Member

J.Wondergem

Well-known Member

wore out

Well-known Member

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