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9n PTO cap/guard


 
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SDE
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Joined: 05 Mar 2009
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PostPosted: Sun Jun 07, 2020 11:13 am    Post subject: 9n PTO cap/guard Reply to specific post Reply with quote

When this cap is tight, there is a gap of about .08 between the flange on the cap and the tractors PTO housing. The depth of the cap, (threaded part) from the end, to the flange is .82 and the depth of the threaded housing is .74. It always looks like it is loose when it is indeed tight. Is this the wrong cap for this tractor? Is there supposed to be a gasket on it that would be a .10 thick to fill the gap? Or is the end of the cap supposed to bottom out in the housing.
TY
SDE
 
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shaun wallace
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PostPosted: Sun Jun 07, 2020 11:54 am    Post subject: Re: 9n PTO cap/guard Reply to specific post Reply with quote

Think there was 4 different styles of pto covers used thru N production. Some one has posted pic of all that were used.
 
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SDE
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PostPosted: Sun Jun 07, 2020 5:14 pm    Post subject: Re: 9n PTO cap/guard Reply to specific post Reply with quote

I found a schematic that showed the cap having straight sides. Mine has a flange and so it must be for another tractor.
TY
SDE
 
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Tim PloughNman Daley
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PostPosted: Mon Jun 08, 2020 12:37 pm    Post subject: Re: 9n PTO cap/guard Reply to specific post Reply with quote

Only two OEM PTO caps were used, all others are aftermarkets. The first 9N cap was cast iron and shorter. The 2N introduced the steel version, longer, and used thru the NAA. When the 1-3/8 PTO splined shaft was introduced, it was a tad longer than the original hence they offered a different cap -this is the one with the squared off end. Was your shaft changed and you are using the OEM cap?

PTO CAPS



NOTE: The 9N-726 cap is cast iron; the 2N-726 cap is stamped steel. Both have identical Thread Size of 2-5/8"-12 UN 2A.

Tim Daley(MI)
 
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SDE
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PostPosted: Tue Jun 09, 2020 4:31 am    Post subject: Re: 9n PTO cap/guard Reply to specific post Reply with quote

The one on my 9n is cast iron and looks like the one on the left. I will have to check how far out the pto shaft sticks out from the tractor. It would still be the original pto shaft. The previous owner did not repair anything at all. He ran them into the ground and then replaced the tractor with another one.
TY
SDE
 
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