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Bush Hog PTO Clutch questions.


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#1 Texas Deere and Horse OFFLINE  

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Posted February 06, 2015 - 04:00 PM

I bought this clutch off of a member here that took it off of a TR10-D Wis. engine on a D4-10. I have disassembled it and see a couple things that need to be repaired if I'm correct in my thinking.  The clutch must slide open and let the belt slip or turn on the aluminum piece in the middle of the split pulley. The Bronze bushing has about 3/16" wear inside of it on the hub I think. Also, the set screw that goes thru the inner part of the pulley hub to the crankshaft doesn't go all the way inside the to tighten onto the shaft, I think it should. I have never had this style clutch on anything and I'm just not sure about all the parts inside it. Maybe someone has a parts break down or diagram that can help me out.

 

IMG_20150206_140218_588.jpg IMG_20150206_140239_784.jpg IMG_20150206_140347_736.jpg IMG_20150206_140401_779.jpg IMG_20150206_140434_181.jpg


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#2 olcowhand ONLINE  

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Posted February 06, 2015 - 05:35 PM

The t-63 uses what I think is the same clutch so check to see if there is a manual uploaded which I think there is.
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#3 Texas Deere and Horse OFFLINE  

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Posted February 06, 2015 - 06:10 PM

Thanks Daniel, I found it and will download it to see if they're the same.
http://gardentractor...s-parts-manual/

#4 olcowhand ONLINE  

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Posted February 06, 2015 - 07:16 PM

Yes Brian, the clutches are identical on the T-63.  But it doesn't even show any set screw other than 2 that secure the stub shaft to the flywheel mount boss.


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#5 Texas Deere and Horse OFFLINE  

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Posted February 06, 2015 - 09:05 PM

Yes Brian, the clutches are identical on the T-63.  But it doesn't even show any set screw other than 2 that secure the stub shaft to the flywheel mount boss.

 

My engine doesn't use a stub shaft, so maybe the set screw is used to hold in the adapter bushing to size the clutch to the crankshaft.



#6 sacsr OFFLINE  

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Posted February 07, 2015 - 10:47 AM

I pulled one off an old t-63 this morning. The clutch body was not being held to the motor crank shaft by a set screw. The piece easily slid off- looked like the long wooddruff key was what was the only thing keeping it from turning around the shaft. One of my pieces is stuck so will have to let it soak for a while. I remember messing with this clutch when I first got it in and it seemed a piece came off in my hands- like a half piece of a ring. Unfortunately I can not find that piece. Made me want to think it fit inside the collar. My collar is either brass or has been braised at some point to repair. It may have been some of that that fell into my hands way back- but my memory is that it was the same material as the clutch plates in the newer PTO clutches just shaped like a thick ring (about the same width as the metal collar). I have no idea of this clutch was working or not.....this tractor was bought as a parts tractor.

Edited by sacsr, February 07, 2015 - 10:48 AM.

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#7 sacsr OFFLINE  

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Posted February 07, 2015 - 12:19 PM

Here are the pictures - I am thinking that set screw may be to tighten on the shaft- I can not see any other reason it would be there. Here are a few pictures of mine ImageUploadedByTapatalk1423329547.318586.jpg ImageUploadedByTapatalk1423329562.168194.jpg ImageUploadedByTapatalk1423329573.252781.jpg
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#8 Texas Deere and Horse OFFLINE  

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Posted February 08, 2015 - 02:02 PM

Scott, thanks for the input. My clutch housing circled in yellow has a bushing inside of it with a keyway slot cut in it to fit my crankshaft. Also the bushing circled in red is a bout 3/16" slope in it when installed on the outer clutch housing circled in white, should that be a tight fit so the bushing rides on the housing?

 

 

T-63-2.jpg

 

 

This shows what I'm referring to in this photo.

 

See the gap in the bushing to clutch hub in the blue circle and see the bushing in the green circle?

 

post-1435-0-31963000-1423256097 T63 clutch.jpg


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#9 olcowhand ONLINE  

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Posted February 08, 2015 - 04:27 PM

I'm sure than bronze/brass bushing should be a better fit to the housing tube.  I assume the other bushing is just to butt against the end of the crankshaft for a flush fit once bolted tight.


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#10 sacsr OFFLINE  

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Posted February 09, 2015 - 07:34 PM

Checked mine tonight, it is not tight, there is some movement side to side, but not much at all. Yours looks like a lot more space than mine.


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#11 Texas Deere and Horse OFFLINE  

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Posted February 10, 2015 - 05:25 PM

Scott, Did you ever get any info on the one in PA with 8,008 serial number? It would be interesting to see what PTO clutch it has on it. I'm wondering since this clutch is from 8,054, maybe BH used what was left over from the T-63 production?



#12 sacsr OFFLINE  

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Posted February 10, 2015 - 07:22 PM

I have talked to the guy, but not about this. I will try to find his contact number and see what he says. The early D4-7 manual has this pto clutch in it. The second manual that has both the D4-7 and D4-10 on the front shows the newer style pto clutch only. That second manual is dated April 1967. I would not be surprised to see older parts carried over.


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