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Cub Lo Boy Clutch Mechanism

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Author  [Modern View]
Bob Landers

01-01-2014 07:56:20

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I recently started work on a 1966 IH Cub Lo Boy. I"ve never seen a worse rust problem--almost every nut or bolt I loosened needed serious heat. I have managed that, but now I have a problem that has me stumped.
The left brake and the clutch are apparently rusted together. When the LH brake is applied, the clutch is also disengaged? The Parts Manual does not show the mechanism inside the housing. So I"m thinking that the part that the clutch operating rod is attached to is rusted to the brake/clutch shaft? The clutch pedal itself is free when you loosen the free play adjustment.
I"ve thought about trying to drive the shaft out from right to left, but don"t know how to get it back since the thing is way inside the housing?
I guess I"m missing something here!
Any advise would be greatly appreciated.

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01-02-2014 13:28:47

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 Re: Cub Lo Boy Clutch Mechanism in reply to Bob Landers, 01-01-2014 07:56:20  
The LH brake shaft goes through the clutch shaft. I have never had good luck driving out a rusted shaft and sleeve set up like that. Twisting usually works better. Sadly, there is no easy way to apply heat that I know of. I would use patients and lots of penetrating oil.

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01-01-2014 15:57:55

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 Re: Cub Lo Boy Clutch Mechanism in reply to Bob Landers, 01-01-2014 07:56:20  
I have a '55 low Boy, and I'll guess it's the same. The clutch pedal rotates on the brake shaft. It is not attached in any way to the shaft or linkage. On mine, there is a hand hole in the bottom of the bell hsng so you can lube the T.O. brg. If you look up in there you can see what the linkage looks like. Removing the brake shaft shouldn't affect the clutch pedal at all as I see it .

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