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1949 Farmall M PTO

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Gary Blackford

07-26-2001 10:01:19

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I have a '49 Farmall M in pretty good shape. One big problem right now. The lever that you pull up to engage the PTO will not stay up. It drops down and disengages. The PTO works fine if you hold the lever up. I can't find any help in the few manuals and books I have. Can someone tell me what I need to do to fix this? Also the plate around the PTO leaks grease. I'm assuming this is nothing more than a gasket issue? Thanks.

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Phil Auten (Tx)

07-27-2001 08:31:36

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 Re: 1949 Farmall M PTO in reply to Gary Blackford, 07-26-2001 10:01:19  
I recently changed the seals on the PTO shaft of my '49 M. The original seal was a thick (front to back) rawhide seal. This was replaced by two rubber lip type seals. I positioned the seals in their holder such that the lips avoided contact with a rough spot on the shaft. No more leaks. Be sure to get a new gasket for the seal holder to PTO housing cover when you get the seals. The whole job took less than 30 minutes.
On the control rod problem, Red and Haas have given you the straight skinny.

Good luck,

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The Red

07-26-2001 10:11:28

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 Re: 1949 Farmall M PTO in reply to Gary Blackford, 07-26-2001 10:01:19  
I am looking at the H parts book which is similar to the M pto. There is a poppet and a spring that is involved with the shifter arm so it will stay in either the up or down position. Sounds like that spring and poppet is missing on your PTO housing located in the vicinity of the shift arm.

Sounds like a new gasket will take care of your leaking at the base.

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07-26-2001 15:08:56

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 Re: Re: 1949 Farmall M PTO in reply to The Red, 07-26-2001 10:11:28  
The M has the same parts that Red mentioned. The poppet is held in by a 1/4 inch slotted pipe plug that is in the LH side of the pto housing. At least that is the way it looks in the parts book. I'll check my tractor to see if that's how it is. I never noticed it before.

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