Farmall Super AV

[Don McCombs]

Now you know why the head and oil pan were off.

[tst]

I have a nice crank from a "C", do not know if that interchanges

[superman]

tst, I sent you a PM

[Super A]

Well now we about to have some fun... opened up engine and found sheared crankshaft!!
https://goo.gl/photos/UY3HvfD8xh33CcXz7

I've got a parts engine in the shop with a crank broken in the exact same place.

Al

[superman]

What's weird, if you look at the picture, there was some "meat" drilled out of crankshaft on both sides. The fracture went from one hole to the other hole. Not sure why these drilled out holes were ever put there. Unless it was done to balance it out for some reason. I have never seen that before.

[tst]

they drill holes in the counter weights of the crank to balance it

[superman]

Update: Pulled pistons, broken crankshaft, camshaft, sleeves and accessories out of engine block. Ended up having to pull sleeves because they were to pitted to hone them out. So obviously I'm looking at a complete rebuild on this one.
https://goo.gl/photos/fRjA8neUfMy1Jtt67

Ok I need some opinions. Casting code on block is 354898R2 and lower block sleeve bore measures 3.43" O.D. So this is a "C113/C123" block.
The pistons that were in it measure 3-3/16", so I'm thinking someone bored the sleeves. Should I upgrade to 3.25" overbore sleeves and run without water pump? It does not have a water pump now.

[Jim Becker]

Stan_VA pretty well explained what you are looking at here:
http://www.farmallcub.com/phpBB2/viewto ... 60#p315871

I think 3-3/16 are/were available for that engine. I'd probably go back with anything 3-1/8 to 3-1/4, as available. Original in that tractor was 3.

[superman]

Thanks Jim... that explains it all.

[superman]

Latest Update:
I have received new to me crankshaft and pulled gear from old one and installed on new crankshaft. I have been cleaning up engine components oiling them up and putting on shelf waiting on reinstalling. Cleaned and rebuilt governor and distributor. I am currently waiting on engine rebuild kit from Steiner that I ordered. I decided to go with 3.25" overbore kit.
https://goo.gl/photos/SA93KsJVm6ER7uKH6

[superman]

Engine finally going back together... installed new sleeves, crankshaft, pistons, rear seal, oil pump and pan.
https://goo.gl/photos/jms2nYmHYwhpYgKR6

[Stanton]

Lookin' purdy!

[superman]

Latest progress...

Rebuilt touch control.
https://goo.gl/photos/N4zGHSe8qcqNEzyXA

Pulled transmission to bring to machine shop, had them helicoil a few bolt holes on left side. Then I cleaned it up and replaced all seals and gaskets.
https://goo.gl/photos/k7v7RRizRE9fDnx98

Through together a little wooden frame to support engine off of stand and installed flywheel and clutch.
https://goo.gl/photos/C13NTrZ3GdcdHWDZ7

Next task will be final drives.

[superman]

Latest Update...

Rebuilt right final, waiting on parts for left final rebuild.
https://goo.gl/photos/jhtCp7RZwnRdoSZx7

Started putting things back togethor, now I have half of a tractor.
https://goo.gl/photos/m2eotwDKKVpgxarx6

Made some new seat cushions for the "custom deluxe" seat that came with tractor. Will do for now... I would like to eventually replace with correct pan or deluxe seat if I can find a decent used one.
https://goo.gl/photos/HWsmvAj6nv7aUkqW8

[superman]

Finally got her back on all four again... after rebuilding donor steering box, replacing axle pivot bushings, and putting new seals and bearings in wheel hubs.

https://goo.gl/photos/5rcfGYPCvHpGQyDB8