4020 clutch again

[nylon4020]

I have to shovel the roof(s) off and have plugged in the 4020 because there is so much snow it will have to be blown. Once it hits the ground it turns into concrete and too tough to plow.

I had checked my free play last summer and it hadn't moved from three years ago when I adjusted it. I really try hard not to do any clutch riding. I tend to only take about a foot or two of bank at a time with a 7 foot dual auger blower so I dont have to ride it. I am very conscious about that. I was wondering if it could have gotten glazed with water / ice since I pluged in tractor and it had melted a fair amount of snow that was packed up in the engine area from snow. Also wondering about oil. I do have a drip or two from that area.

I think it must be a button type because it doesn't "feel" like any other clutch I have ever had. Like I said it is either engaged or it is disengaged not much room for riding it. It is -2 out right now and taking off the clutch cover is a cold prospect..supposed to get warmer than 5 tomorrow so will try and look in there then. The question is...what should I be looking for? I have had the cover off before and I had a tough time knowing what I was looking at. If I remember right I could see the fingers and that was about it.

Thanks for the earlier replies guys. BTW The clutch has always been strong as I really have not put more than 90hours on it in the four years I have had it. I had done some plowing about 2 years ago but it is pretty much a loader tractor.

Thanks again.

 

[ET]

If you have 1 1/2" to 2" of free play and it don't slip and lets go when you push in the pedal what more do you need until you run out of free play?

 

[nylon4020]

What are the differences between a fiber and a button clutch? And if I have to put in a new one which one should it be? Also if I do have a button clutch how is it that I seemed to have drive slipage and not the loss of PTO action? How can I tell if my clutch is actually slipping?

 

[tim s]

Wow, more questions than a final exam..A button clutch has 5 or 6 "buttons of a soft metallic facing, they were offered as a heavy duty clutch, they will "eat" a flywheel, and they are very jumpy, they also cause clutch drag which in turn cause hard shifting. a fiber or woven clutch has a full cover and are much more user friendly..As for the drive slippage and not affecting the PTO, they are two different clutch plates operating on their own...as for telling if your clutch is slipping bump it up into 7th or 8th gear head it out the driver way and apply the brakes, if the ground speed slows down and the engine RPM's don't,,your clutch is slipping...

 

[Tx Jim]

(quoted from post at 20:43:43 01/15/11) What are the differences between a fiber and a button clutch?

I'll agree with tim s that button clutches eat flywheels if they ever slip.

You can go to JDparts.com,register and type in the part # and specifications and a sketch of the clutch will appear.

Part Number: AR55660
Part Price: 205.00 USD
Description: DISK,CLUTCH,ASSEMBLY,BALANCED

 

[Mike M]

Lots of clutch material choices out there !

Organic,feramic,ceramic (button type)and kevlar is what I found when looking for our 4020.

Kevlar was to be the best of both worlds,but it is more money and was told that the flywheel and clutch plates had to be really really smooth or they would chew it up. I never had one and didn't want to experiment.

I opted for the feramic for our loader tractor and it works pretty well. It is to last alot longer then the organic,but not be grabby like the ceramic. Our old JD 440 crawler loader had one of these so I had used one before.