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Allis Chalmers Discussion Forum
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Odd putty plug in B engine oil pump

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Squidtone

03-21-2008 06:34:59




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Hi all, I hope this isn't a repost (I lost my original post of this??)
I am working on a B engine rebuild. I have come to the oil pump. It pumps oil into a passage in the block which goes to the oil filter housing. Where the oil goes through the pump body, there is a right angle cavity which goes to the passage in the block. This cavity has a plug which appears to be some sort of putty. I'm scratching my head on this one. Is it there from the factory? Will it last another 50 years? How come it's not a NPT plug? Anyone see this and/or fix it?
Thanks very much.

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Dick L

03-21-2008 12:05:54




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 Re: Odd putty plug in B engine oil pump in reply to Squidtone, 03-21-2008 06:34:59  
There is no pressure in that side. If the plug was out it would be vacuum instead of pressure. They drilled all the way thru in manufacturing to form the groove needed to build pressure on the opposit side.



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steve(ill)

03-21-2008 07:27:07




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 Re: Odd putty plug in B engine oil pump in reply to Squidtone, 03-21-2008 06:34:59  
yes, one of the cross drilled ports was plugged with putty. poke with the screw driver, if it is hard and stable, it should be good for another 50 years.



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Squidtone

03-21-2008 06:36:34




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 Re: Odd putty plug in B engine oil pump in reply to Squidtone, 03-21-2008 06:34:59  
Here is a picture



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Carbonfibers

03-21-2008 18:05:28




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 Re: Odd putty plug in B engine oil pump in reply to Squidtone, 03-21-2008 06:36:34  
Very good pictures. I thought you were a good mechanic when I saw the first few pictures. After looking at all of them I think you are a mechanical engineer. Am I right ? I hope you will have pictures of the finished job.

I have a 1942 B which has been running like a clock for 66 years. I am doing some minor maintenance on it now. Stuff like new guages, new thermostat and water pump pulley,a new valve cover gasket,new battery box, voltage regulator to replace the cut out, new radiator cover and grill, replaced a few rear tire lugs and did a complete lub job. It still has good oil pressure so I am afraid to mess with it since grass cutting season is here. It always sleeps in the work shop.

If I ever need to rebuild the engine I will hire you.

Wayne

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Squidtone

03-22-2008 11:15:34




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 Re: Odd putty plug in B engine oil pump in reply to Carbonfibers, 03-21-2008 18:05:28  
Thanks for the kind words. Yes, I guess I'm an engineer, that's my job title at work. I've always loved working on things that run. I do plan on refurbishing the whole tractor. It's not even mine, it's on my wife's uncle's family farm. I plan on fixing the charging system, putting in a shutoff switch, and eventually stripping the whole thing and repainting it. Sort of like what Bob(NH) who I've seen on this BBoard has done. I didn't realize how much work even the engine rebuild is. But I enjoy it. The farm has a small 40's Farmall too, but I don't know if I'll volunteer for that one yet! In a while, I'll probably put up a webpage on the ol' "B" rebuild. If it helps a few, that's my goal. I appreciate seeing and reading other peoples experiences with rebuilding their stuff.

Thanks to all about the putty in the oil pump too. I'm leaving it intact. I must search out some springs for the pump, as the old ones are worn out.

Dave

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Carbonfibers

03-22-2008 13:12:02




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 Re: Odd putty plug in B engine oil pump in reply to Squidtone, 03-22-2008 11:15:34  
I recognized the symptoms, I am an engineer also.

Wayne



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