Yellow Low-Boy Cub

CharlieNJ · May 16, 2012

I am thinking about buying a yellow Cub. It has a belly mower. Owner says he has to hold the PTO in by hand to run the mower.
The only Farmall PTOs and transmissions I have been inside are A's, B's, and AV's. The Cub parts book has me a little baffled.
So what might I expect to find inside the Cub's PTO? Could it be the splines on the output shaft from the transmission are rung off? Or is there something common on these Cubs?
Regards,
Charlie

mkirsch · May 16, 2012

All it is, is a little lever that moves a sliding collar to join the PTO shaft to the transmission main shaft. It could be a matter of the latch plate that holds the lever simply being out of position. It could be stripped splines as you suggest. It could also be the shaft has slid out the rear of the tractor a bit and things are too far apart to engage properly. Could also be worn bearings causing a misalignment, which in turn causes the collar to "walk" to the disengaged position.

Fixing any or all of this is pretty much the same process, and not all that difficult. All the PTO parts can be removed and serviced without splitting the tractor.

BTW, the PTO turns at engine speed, and backwards from a standard PTO. The PTO shaft is essentially connected directly to the engine.

James Williams · May 16, 2012

I beleive this was a common problem becaues of overtighten the belts and the lack of power,I think that overtighting caues bearing wear causing the pto to slip out of gear

jimmy

gene bender · May 16, 2012

Correct on the splines being worn also the linkage needs to be in good shape for the splines to get fully enguaged. Belt needs to be kept tight so it doesent wear out

Yellow Low-Boy Cub

CharlieNJ

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mkirsch

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James Williams

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gene bender

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