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Re: Correct PTO assembly on 53 Sh II ?

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Author  [Modern View]

10-05-2013 07:15:51

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There were only 2 styles used on the Hs. The very early style with the smaller diameter shaft, and then the later style such as you have. The later style continued right up through the Super Hs. The Farmall 300 also used that later style, but the 300 also offered the optional, independent PTO.

I may be off a little. The independent PTO may not have been available until the introduction of the Farmall 350.

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Owen Aaland

10-05-2013 13:41:07

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 Re: Correct PTO assembly on 53 Sh II ? in reply to RustyFarmall, 10-05-2013 07:15:51  
Quoting Removed, click Modern View to see

Technically, there were three different PTO assemblies used on the H model. There was also another style used for a short period that looked very similar to the first style on the outside but the engagement inside was changed from the dog clutch type to the later spline style clutch.
The serial number break down is as follows:

Type 1 501 to 45613

Type 2 45614 to 117999

Type 3 118000 and up.

Tractors originally equipped with the second style could be upgraded to the later style by just changing the PTO assembly. Tractors originally equipped with the original style generally needed the later style transmission counter shaft to use the later style PTO assemblies.
There was an adapter that could be used to convert the dog clutch style counter shaft to the later style but I don't know how well they would work once the shaft was worn out. The ones I converted would not stay engaged because of too wear on the dog clutch. Since the counter shaft had to come out to be repaired it was easy to just upgrade to the later style shaft.

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10-05-2013 07:38:21

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 Re: Correct PTO assembly on 53 Sh II ? in reply to RustyFarmall, 10-05-2013 07:15:51  
Indepemdent PTO was available(standard?) on 300.I had one,brother-in-law still has two .In fact, never seen a 300 that did not have ipto.

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10-05-2013 08:02:32

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 Re: Correct PTO assembly on 53 Sh II ? in reply to DeltaRed, 10-05-2013 07:38:21  
Seems like I have seen 1 or 2 300s with the late H style pto, although I really don't know why anyone would order up a brand new 300 WITHOUT the IPTO.

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10-05-2013 08:09:26

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 Re: Correct PTO assembly on 53 Sh II ? in reply to RustyFarmall, 10-05-2013 08:02:32  
Okay, I just now looked it up on the Case-IH website, and yes, both styles of pto were available for the 300.

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