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B torque tube drive shaft not grabbing?

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Dick L View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dick L Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2016 at 3:07pm
Originally posted by CrestonM CrestonM wrote:

I don't guess I understand how the cotter pin makes the difference between good splines and stripped splines. 

The put shear pins on smooth shafts. A cotter key would also work as a shear pin. I have used a cotter pin in a pinch for a shear pin on my auger.
 
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CTuckerNWIL View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2016 at 3:38pm
It's kinda like having the bolt that holds the drawbar to the finals work out. There are only about 4 complete threads to begin with. If the bolt comes loose and you keep pullin with the drawbar, you will end up stripping the first thread or 2.
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Ken in Texas View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken in Texas Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2016 at 6:56pm
There are a few adding comments who think the coupling and the shaft are two separate pieces. They are, but they ARE WELDED TOGETHER and can't slide or be pulled apart. Parts book does not show this. Gives each piece a part number. I have 5 drive shafts on the shelf. All have the coupling welded to the shaft.

Edited by Ken in Texas - 21 Sep 2016 at 6:58pm
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CrestonM View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CrestonM Quote  Post ReplyReply Direct Link To This Post Posted: 21 Sep 2016 at 7:31pm
Originally posted by Ken in Texas Ken in Texas wrote:

There are a few adding comments who think the coupling and the shaft are two separate pieces. They are, but they ARE WELDED TOGETHER and can't slide or be pulled apart. Parts book does not show this. Gives each piece a part number. I have 5 drive shafts on the shelf. All have the coupling welded to the shaft.
Thanks for explaining that. I was one of those thinking that too.
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CrestonM View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CrestonM Quote  Post ReplyReply Direct Link To This Post Posted: 22 Sep 2016 at 8:01am
So Ken...If the shaft and coupling are one piece, why wouldn't they slide together from the engine end, without splitting at the transmission?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dakota Dave Quote  Post ReplyReply Direct Link To This Post Posted: 22 Sep 2016 at 9:05am
You have a three foot long piece of 1" steel and three inches to grab onto on the end. Getting the coupler back on the trany stub shaft takes luck. It must be oriented so the splines are lined up and centered on the shaft to go on. The cotter pin is just for assembly it keeps the coupler that's welded to the drive shaft from sliding apart. During operation it really doesn't have any use. You can't pull the drive shaft out of the torque tube from the engine end because the welded coupler won't fit thru the throw out bearing support tube. It should have taken you about an hour to remove the gas tank,starter,battery and taken two bolts out of the foot rest tube . Take four nuts off and slide it apart. I've just put a sawhorse under it slid it foward balanced with one hand slide the coupling together and stuff a long cotter pin in. I've put then back together without a cotter pin and not worry about it it'll be decades before it needs to come apart again. When you split one for a clutch and the shaft pulls out puback in without turning it and you have about a 50% chance of success. Once you've turned the shaft it gets a hundered times harder to get it lined up. I've had my wife turn the belt pulley with the pto engaged while I wiggle the shaft and got it to go back together. I use the same method when trying to get the splines into the clutch disk. if I give her a clean rag she'll stand behind the tractor and turn the belt pulley for a few minutes if I ask nicely.
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