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vpint 
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Joined: 16 Nov 2009
Location: MPLS, MN
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 Topic: Allis B PTO
Posted: 28 Nov 2009 at 5:01pm |
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I have a B and just got a new sickle mower which I mounted but the pulley for the mower and the PTO pulley are off by about 4 inches. The PTO on my tractor has a collar that is 3 inches in diameter by 3 and one half inches long and then the PTO shaft is after that. So when I put the pulley on I am about 4 inches too far back. My question is do I have the wrong pulley or is there a way to take the PTO collar off in an effort to shorten the shaft by that much? The collar and the PTO shaft are all one unit.
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Eldon (WA)
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Joined: 11 Sep 2009
Location: Spokane, WA
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Posted: 28 Nov 2009 at 5:11pm |
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It sounds like someone put an overrunning pto clutch on your pto. If there are 2 setscrews or grease zirks on it, take them out and there should be a roll pin that you can drive out with a punch. Then the whole thing should slip off of the original pto shaft.
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Ken in Texas
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Joined: 11 Sep 2009
Location: Henderson, TX
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Posted: 28 Nov 2009 at 7:17pm |
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Eldon took the words right off my reply I was proof reading. It's a one piece thingie that fits over the pto shaft splines to allow a bushog to freewheel instead of shoving the tractor ahead when you push in the clutch. You don't use that thingie to run a sickle mower.
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CTuckerNWIL
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Joined: 11 Sep 2009
Location: NW Illinois
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Posted: 28 Nov 2009 at 7:29pm |
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It is possible you have a 1 1/4 pto instead of an 1 3/8 pto shaft also. The 1 3/8 conversion would make it longer. If that is the case, you may need a different pulley for the tractor. I'm thinking Eldon and Ken may have the right answer though.
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StanInLowerAL
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Joined: 13 Sep 2009
Location: South Alabama
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Posted: 28 Nov 2009 at 10:09pm |
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I had the same issue on my B when I mounted the IND SICKLE MOWER. The pulley was made for the 1 3/8 shaft and my B had a 1 1/8 shaft. I got an insert type adapter from my local farm equipment dealer that decreased the ID of the pulley when I installed it so it would fit the PTO shaft. I think the cost was about $6. If you need one and can't find it let me know. Stan
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StanInLowerAL
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Location: South Alabama
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Posted: 28 Nov 2009 at 10:12pm |
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I should have said that when you remove the adapter that is on your tractor, you might have to change the ID of the pulley to fit the PTO shaft. Stan
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StanInLowerAL
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Posted: 28 Nov 2009 at 10:29pm |
Here is a picture of the insert. Look closely and you can see it on the shaft. I also have the Gates belt size if you need it. Stan
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AC Wilk
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Joined: 06 Oct 2009
Location: Souther Indiana
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Posted: 28 Nov 2009 at 10:46pm |
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Yes I did paint it myself........Why do you ask?
1956 B
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StanInLowerAL
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Location: South Alabama
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Posted: 29 Nov 2009 at 8:05am |
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For AC Wilk, the turnbuckles are AC factory equipment. A forum member was kind enough to sell them to me at a reasonable price. They are intended to add additional bracing to the drawbar and be adjustable as the need to tighten the belt the drive belt. I think they were the same on the B and C. ACGO part numbers are708021153 LH thread rod, 70802160 coupling nut, 70802152 RH thread rod. I don't know if they are still available but you might ask. They are listed with the parts for a B/C sickle mower. Let me know if you need any more information about them. Stan
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GBACBFan
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Joined: 11 Sep 2009
Location: Green Bay WI
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Posted: 29 Nov 2009 at 8:37am |
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"The trouble with quotes on the Internet is that you can never know if they
are genuine." - Mark Twain
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AC Wilk
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Location: Souther Indiana
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Posted: 29 Nov 2009 at 8:21pm |
Thanks Stan, as always the knowledge and willingness of everybody to help on this forum is priceless.
And thanks to GBACBFan for the pic.
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Yes I did paint it myself........Why do you ask?
1956 B
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vpint
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Joined: 16 Nov 2009
Location: MPLS, MN
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Posted: 30 Nov 2009 at 5:50pm |
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Eldon (WA)
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Posted: 30 Nov 2009 at 7:21pm |
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Clean it up good and rotate it....there's got to be one in there somewhere.
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john2189
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Joined: 11 Sep 2009
Location: Minerva,Ohio
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Posted: 30 Nov 2009 at 11:47pm |
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Some runover clutches have a spring loaded release on them that releases ball bearings from the groove on the pto shaft
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'41 Allis B
'45 Allis B
'49 Farmall Cub
'72 IH Cub
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StanInLowerAL
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Posted: 01 Dec 2009 at 5:59am |
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vpint
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Posted: 02 Dec 2009 at 2:57pm |
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It looks like I am going to have the same problem that you had in that I will have to cut the coupler off. Before I get the torch out, do you know how far back form the main tractor rear end I should cut so that i come close to the spot where the ball bearings are? My guess is that I should cut at the distance from the tractor where your corrent PTO shaft has the grove?
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StanInLowerAL
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Posted: 02 Dec 2009 at 10:22pm |
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