pharmvet
Platinum Member
- Joined
- Sep 28, 2008
- Messages
- 535
- Location
- North East TX
- Tractor
- Ford 7710 II FWA, NH TB110 FWA w/ NH 46LB loader, JD 5303 2wd w/ loader
I have a Rhino TR120 (10' heavy duty pull behind shredder). I have had it for about 3 seasons. Probably have about 30 - 40 hours on it. This weekend I was shredding along just fine (diddn't hit anything except occasionally some dirt on a dip or rise).
All of a sudden I heard "CLANK, CLANK, CLANK". I immediately throttled down the tractor and shut off the PTO. I assumed I had hit a T-post or something and it was hung under the shredder making noise with every rotation. I raised the mower all the way up and killed the tractor. I got out and looked under the mower. Everything looked fine, except that there was a fresh "quarter sized" chunk knocked out of the very end of a a couple of the blades. I then determined that it was the blades hitting each other (one from each side) Knowing that the blades were intentionally offset so that they could not hit I immediately assumed I had stripped something in the drive line and the blades had been allowed to get out of time. I first checked that main drive line (from tractor to middle gear box) Everything looked fine. I then checked the left and then the right connections from middle to outer gear boxes. I found my problem where the input shaft on the left gear box and the shaft collar meet.
The splined shaft and the collar would freely rotate and there were metal shavings everywhere.
I went to the parts house today, and the mechanic suggested that the shaft could very well be OK, as it was made of very hard metal, but the collar shat slips on the shaft was most likely the part that gave way. I ordered a collar and will now dis-assemble things to see what really happened.
1) Do you also feel that the shaft could be OK?
2) What likely caused this failure and why were no other shaft/collar units damaged?
3) From looking at the rubber shock absorbers, would you replace them?
Thanks in advance for any and all advice.
All of a sudden I heard "CLANK, CLANK, CLANK". I immediately throttled down the tractor and shut off the PTO. I assumed I had hit a T-post or something and it was hung under the shredder making noise with every rotation. I raised the mower all the way up and killed the tractor. I got out and looked under the mower. Everything looked fine, except that there was a fresh "quarter sized" chunk knocked out of the very end of a a couple of the blades. I then determined that it was the blades hitting each other (one from each side) Knowing that the blades were intentionally offset so that they could not hit I immediately assumed I had stripped something in the drive line and the blades had been allowed to get out of time. I first checked that main drive line (from tractor to middle gear box) Everything looked fine. I then checked the left and then the right connections from middle to outer gear boxes. I found my problem where the input shaft on the left gear box and the shaft collar meet.
The splined shaft and the collar would freely rotate and there were metal shavings everywhere.
I went to the parts house today, and the mechanic suggested that the shaft could very well be OK, as it was made of very hard metal, but the collar shat slips on the shaft was most likely the part that gave way. I ordered a collar and will now dis-assemble things to see what really happened.
1) Do you also feel that the shaft could be OK?
2) What likely caused this failure and why were no other shaft/collar units damaged?
3) From looking at the rubber shock absorbers, would you replace them?
Thanks in advance for any and all advice.