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Allis Chalmers Discussion Forum

G-262 Engine Assembly

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todd hertel

08-06-2016 07:54:00

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My neighbor has a Cockshutt 40 that had the engine replaced with a AC G262 combine engine some years back. It recently had to be torn apart due to an oil pump failure. Upon inspection of his engine, I see that the numbers on the rod caps are facing the cam. I don't have an AC manual but have a cockshutt/buda manual which states that the rod cap numbers are to face opposite to the cam side. Which orientation is correct "numbers face" or "numbers opposite' to cam. What are the results if incorrect? The oil pump has 2 cast tangs around the intake to keep the screen away from the intake. One of the tangs broke off and jammed the gears in his pump. It spun the pressed gear off the ends and pushed the distributor up. We are also looking for a good used oil pump for a G262 AC engine. Any help would be greatly appreciated.


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08-06-2016 20:24:38

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 Re: G-262 Engine Assembly in reply to todd hertel, 08-06-2016 07:54:00  
I have an Official Allis-Chalmers Service manual for a D-19. I also have D-15 and D-17 diesel manuals as well, from A-C not some after-market books. No where in any of the 3 books does it say which way the rods are to be faced. My contention is this.....reassemble it just as it was. There wasn't any issues with rods or rods bearings were there? Doesn't sound like it. So, why would you want to change it?? In all honesty, it probably makes no difference. The piston heads are bi-lingual and the rods are too with the floating piston pin design. Again, if it was mine, I'd reassemble it exactly as it was, because there wasn't a problem. You do whatever you want.

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todd hertel

08-06-2016 11:54:22

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 Re: G-262 Engine Assembly in reply to todd hertel, 08-06-2016 07:54:00  
I just had a gentleman call that thought he had a good oil pump. He also said that page 20 of his AC D-19 service manual states that the numbers on the on the rod caps are to be in register and face AWAY from the camshaft side of the engine. Now I have an Engine and Dr. Allis that contradicts what the service manuals are saying. Does any of this matter and if so what are the affects? The engine was converted from a combine to put into an Cockshutt 40 so some modifications where made but unknown to what extent.


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08-06-2016 08:05:20

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 Re: G-262 Engine Assembly in reply to todd hertel, 08-06-2016 07:54:00  
While the bloodlines go back to the Buda, it is an Allis-Chalmers engine. Numbers towards the camshaft, just like it was when you took it apart.

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