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Sickle Mower

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ajhbike
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Tractors Owned: 1957 Cub
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Sickle Mower

Postby ajhbike » Tue Jul 03, 2018 10:30 am

What exactly is the function of the gag lever on a sickle mower?

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Jim Becker
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Re: Sickle Mower

Postby Jim Becker » Tue Jul 03, 2018 11:29 am

Without that mechanism, when you try to raise the cutter bar the outer end would remain on the ground.

ajhbike
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Posts: 1616
Joined: Thu Mar 09, 2017 4:06 pm
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Tractors Owned: 1957 Cub
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1968 JD 3020
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1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Sickle Mower

Postby ajhbike » Tue Jul 03, 2018 12:01 pm

Thanks....Interesting word choice to describe the part.

ajhbike
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Posts: 1616
Joined: Thu Mar 09, 2017 4:06 pm
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Tractors Owned: 1957 Cub
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1955 Ferguson TO-35
Location: Branford, CT

Re: Sickle Mower

Postby ajhbike » Thu Jul 05, 2018 6:04 am

So I have this issue with the C-22. Everything is hooked up and connected and it runs. But man o man it shakes. Looking at it closer, the rear pulley for the lower drive/flywheel shaft has about 1/2" front to back play in it. The PTO pulley (with a pin through the pulley and PTO shaft) is about 1/2" out of alignment (to the front) of the lower drive pulley so when running I can look down and see the lower drive pulley going front to back that 1/2" which is a big contributor to the shake. I saw Matt and Stacey's videos and while they say there is some vibration....it is nothing like I have.

Is there a way for me to move that lower drive pulley toward the front to overcome the play in it and seat it to align the pulleys and reduce the vibration? Thank you. John

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tmays
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Re: Sickle Mower

Postby tmays » Thu Jul 05, 2018 6:11 am

Can’t remember the sizes, but machined bushings(washers) take up that slack. Lot of moving parts on these, so a lot of places for vibration to develop. Peruse the manual to get a better understanding. There are bushings inside the main shaft at each end that need checked. Bearing on the Pittman needs checked. Register needs to be correct(see manual). And blade alignment needs to be 90 degrees to the shaft. That’s taking into consideration the backward pressure exerted on the bar as you’re cutting.
Thomas

ajhbike
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Tractors Owned: 1957 Cub
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Location: Branford, CT

Re: Sickle Mower

Postby ajhbike » Thu Jul 05, 2018 6:22 am

So i would need to pull the pulley and drive shaft out to put in the spacer washers. I presume there is a way to remove the pitman flywheel so I can pull the shaft out from behind. The manual has 2 sentences where a paragraph is needed!

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tmays
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Re: Sickle Mower

Postby tmays » Thu Jul 05, 2018 6:35 am

No, don’t remove the flywheel. Remove the rear pulley and shaft will slide out the front. Trust me, you don’t want to remove the flywheel

Edit: threads on the pulley are reverse threads. Clockwise to loosen. Same for front bearing nut
Thomas

ajhbike
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Location: Branford, CT

Re: Sickle Mower

Postby ajhbike » Thu Jul 05, 2018 6:40 am

I bet that pulley is going to be a dog to get off. I suppose I have to jam the flywheel up front to work on the pulley in the back.

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tmays
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Location: Raymond, MS

Re: Sickle Mower

Postby tmays » Thu Jul 05, 2018 6:52 am

They can be tough, but usually not too bad. Impact is best way to go. Otherwise, yes, jam the flywheel.
Thomas

ajhbike
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Tractors Owned: 1957 Cub
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1955 Ferguson TO-35
Location: Branford, CT

Re: Sickle Mower

Postby ajhbike » Thu Jul 05, 2018 7:30 am

Well, we'll give it a whirl...Thanks, Thomas

ajhbike
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Joined: Thu Mar 09, 2017 4:06 pm
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Tractors Owned: 1957 Cub
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1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Sickle Mower

Postby ajhbike » Thu Jul 05, 2018 8:14 am

Again, manual doesn't mention....does the pulley unscrew from the flywheel shaft or is it pinned?

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Dale Finch
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Re: Sickle Mower

Postby Dale Finch » Thu Jul 05, 2018 8:15 am

Dale Finch
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tmays
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Joined: Wed May 11, 2011 8:59 pm
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Tractors Owned: 1969 Farmall Cub
1952 Cub
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Location: Raymond, MS

Re: Sickle Mower

Postby tmays » Thu Jul 05, 2018 8:21 am

It unscrews. No pin. And Dale is correct , of course, since there are two pulleys in the system. To differentiate between flywheel pulley and pto pulley. Pto pulley has a pin(usually cotter key) and a bolt
Thomas

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Dale Finch
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Posts: 6645
Joined: Tue Apr 27, 2010 11:34 am
Zip Code: 27517
Tractors Owned: '51 Cub #140966 "Bruno" with Woods 59 mower
'55 Cub #187541 "Betty" with Fast Hitch
'55 Cub #190482 "Ben" with Woods 42 mower
'55 Cub #191739 "Bertha" with Woods 42 mower
'56 Cub #194370 "Boris" with Mott Flail mower
Circle of Safety: Y
Location: NC, Chapel Hill

Re: Sickle Mower

Postby Dale Finch » Thu Jul 05, 2018 8:31 am

And if I remember correctly, it is pretty easy to find a place forward to put a "wedge" in between the bottom of the right side of the hanger bracket and the cutout/notch on the flywheel when rotated into position. You can see the area I refer to in Illustration #14, at the far right at the flywheel:
http://farmallcub.com/rudi_cub/www.cleancomputes.com/Cub/Cub%20Implement%20Manuals/International%2022,%20Cub-22,%20and%20L-22%20Mowers/Page%2014.jpg

NOTE: You block the rotation one direction on the bottom right, but when reinstalling, you jam it on the other side (or vice versa!)...can't really remember which side for ON and which side for OFF...I don't even own one!!!
Dale Finch
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ajhbike
5+ Years
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Posts: 1616
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 JD B
1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Sickle Mower

Postby ajhbike » Thu Jul 05, 2018 9:55 am

Boy, that is not at all like the manual I have ...and I can't remember where I got it...but mucho thank you both. Let me digest what you guys are teaching and I will reach out if needed. Thanks again.


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