[Farmall] Oil for Cub Engine

[michael willis]

I have a 240 utility that had bad oil pressure.  The oil pump has a cast iron housing with an aluminum cover.  The gears wore a pattern in the aluminum cover that allowed for enough clearance to make for inefficient pumping and low pressure.  I got a pane of heavy glass(it's as perfectly flat as I think you could get), put a sheet of emory cloth on it and proceeded to polish the gear marks out of that aluminum cover.  Once smooth again, I made a new gasket, re-installed the cover, buttoned the engine up and found that I had more than satisfactory oil pressure.  I don't know if this will be of any help, but, if so, I'm happy to share it.




________________________________
From: Roger Moffat <rogerkiwi at aol.com>
To: Farmall/IHC mailing list <farmall at lists.antique-tractor.com>
Sent: Monday, July 20, 2009 3:11:30 PM
Subject: [Farmall] Oil for Cub Engine

I've got a 1949 (Serial 82115) Cub that has problems with oil pressure  
when starting it up if it hasn't run in a while.

I know I'm not alone in this, and am aware of the priming hole hidden  
away behind the hydraulic lines where it's hard to get at.

So this afternoon I've taken the sump off and cleaned it out - not  
tooooo bad for a 60 year old tractor I guess - and checked the suction  
pipe - it wasn't absolutely tight - I could move it by hand from side  
to side with only moderate force, but it certainly wasn't loose.

The bearings are loose - big ends can be moved up and down probably . 
010 on the worst one - I don't have a dial gauge to measure with. But  
I'm not inclined to be trying to fix this right now - that's a whole  
'nother project I think, and the tractor gets only light occasional use.

So new gasket purchased from NAPA just now I'm ready to put it back  
together.

What oil should I use in the engine? The book says SAE 30 above 80°F  
SAE 20 for temps 32°F - 80 °F, and SAE 10 below 32°F.

Since I'm in Michigan should I use 10W-30 perhaps?

Thanks

Roger=

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