pto pulley problems

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knucklebuster
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pto pulley problems

Postby knucklebuster » Sun Feb 08, 2015 5:03 pm

I have a problem with my pto pulley. The pulley hub is loose on the pto shaft. I was able to pull it off by hand, with out much effort and without disassembly. The bolts holding the pulley together were tight. The hub is obviously worn in the splines, and I can slide it all the way into the pulley by hand.

Will a new hub fix the problem, or should I find a new or good used pulley/hub assembly? This is a 74 cub, and a woods 42 mower.

Thank you for the help!
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BILL

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tmays
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Re: pto pulley problems

Postby tmays » Sun Feb 08, 2015 5:19 pm

Aluminum shim between pulley and hub. Works great :-)
Thomas

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Re: pto pulley problems

Postby knucklebuster » Sun Feb 08, 2015 5:23 pm

Thanks Thomas. There was already an aluminum shim between the pulley and hub though, and it was still loose when bottomed out. I'm thinking the splines are just worn out. Not sure if the pulley can be reused though.
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Re: pto pulley problems

Postby Barnyard » Sun Feb 08, 2015 5:24 pm

If the pulley is loose on the shaft then you have a bushing problem. The pulley bolts to the bushing so there should be little play there. From the looks of those bushing splines I'd say you need to replace the bushing.
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Re: pto pulley problems

Postby staninlowerAL » Sun Feb 08, 2015 5:35 pm

What is the condition of the pto shaft? If it is worn, it will account for some of the slack. Industrial mill supply should have some steel shim stock that might help the shaft. Agree with Barnyard, the bushing looks like it's time to replace it. The pulley is interchangable if it is not damaged. Stan

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Re: pto pulley problems

Postby tmays » Sun Feb 08, 2015 5:43 pm

Splines may be gone as Bill suggests. Looking at it on my phone and can't tell. If you engage pto and try to turn hub back and forth by hand and there's slack, then time for hub. If there's no wear to pulley where it contacts hub, then no reason why pulley can't be reused.
If hub has no slack, I'd try doubling shim material. Worth a shot.
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Re: pto pulley problems

Postby Bill Hudson » Sun Feb 08, 2015 5:51 pm

From what you describe and your pic, the splines in the hub appear to be worn excessively. If they are worn, check your PTO for wear also. If it is worn too much, replace it with a good used or new one. Then replace the hub. You will be amazed at the difference.

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Re: pto pulley problems

Postby challenger » Sun Feb 08, 2015 7:22 pm

In addition to all the good points already made, make sure your pulley hub has not been cracked in the past by someone over-tightening the splined tapered sleeve in the pulley hub.

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John *.?-!.* cub owner
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Re: pto pulley problems

Postby John *.?-!.* cub owner » Sun Feb 08, 2015 8:15 pm

Looks like the price has gone down quite a bit since I last bought one.
http://www.amazon.com/gp/product/B00EK1 ... UTF8&psc=1
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Re: pto pulley problems

Postby Barnyard » Sun Feb 08, 2015 8:21 pm

John *.?-!.* cub owner wrote:Looks like the price has gone down quite a bit since I last bought one.
http://www.amazon.com/gp/product/B00EK1 ... UTF8&psc=1

John, this is a three hole bushing.
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.
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John *.?-!.* cub owner
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Re: pto pulley problems

Postby John *.?-!.* cub owner » Sun Feb 08, 2015 8:32 pm

Barnyard wrote:
John *.?-!.* cub owner wrote:Looks like the price has gone down quite a bit since I last bought one.
http://www.amazon.com/gp/product/B00EK1 ... UTF8&psc=1

John, this is a three hole bushing.
oops, sorry.
If you are not part of the solution,
you are part of the problem!!!

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Re: pto pulley problems

Postby knucklebuster » Sun Feb 08, 2015 9:17 pm

Thank you all very much for the help. I do not believe that my PTO shaft is worn too much. I'll try a new bushing, then replace the shaft if needed. Those three hole bushings are proving hard to find, though. It looks like I'll have to buy a complete pulley assembly.
BILL

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Re: pto pulley problems

Postby Roninpa » Sun Feb 08, 2015 9:43 pm

Go on masterdrives web site they have the specifications of the various bushings that are used then you can determine what bushing you have. Then you can search for a 10 splined bushing of that type. Rpn

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indy61
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Re: pto pulley problems

Postby indy61 » Mon Feb 09, 2015 7:10 am

I think the bushing John linked to is correct. The photo knucklebuster posted is the backside.

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Re: pto pulley problems

Postby Barnyard » Mon Feb 09, 2015 7:48 am

indy61 wrote:I think the bushing John linked to is correct. The photo knucklebuster posted is the backside.

I believe that is the front side, regardless, every pulley I have seen with three holes on the back looked like the one shown below on the other side. There's no way you will make the bushing John pointed to fit without heavy modification

worthington-pulley.JPG
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