Ol Kansas Fiddler
Member
I have a few questions and need advice about overrun clutches. Im going to be first-time brush-hogging and Im trying to figure things out. This pin-style overrun clutch (pic A) was on the Ford 860 tractor when I bought it, so I dont know what its been thru. Un-coupled with any implement, it has a LOT of wobble when I engage the PTO shaft. So I went ahead and hooked the tractor and the o-run clutch up to a new 6 King Kutter (yes, it was lubed and gearbox filled). When I engaged the PTO, the shaft was flailing around a bit too much for my liking. So now Im trying to figure out whats causing it, and whether I need a new overrun clutch. No, I didnt hook the cutter up directly to the PTO shaft (yet); Im really nervous about doing that.
I took the o-run clutch off and checked the PTO shaft itself; no play and straight as an arrow. The pin I drove (pounded) out came out bent (pic B). I dont know how I would have done that driving it out. Im guessing this bend would this have been caused by excessive torqueit bent but not sheared.
1. Could the pin alone be the cause of the wobble?, and more importantly, the cause of the excessive flailing-around of the shaft?
Im surprised there arent any YouTube vids on overhauling these things, or at least I could bring up any. Anybody ever done that? 2. What happens when you take out the big snap ringyouve got to have pauls, and cogs and ball bearings and I dont know what all in there. Are they tricky? Or just what all is involved. I need a parts schematic of how theyre made up inside. I dont even see a brand name anywhere. Who makes these things anyway?
3. Do they just wear out beyond repair?, and if so, how can you tell? Any tolerances or play I can measure?
Regarding buying a new one: I like the quick-connect style, and was looking at the one our host offers. But the pin-style does seem to offer a level of protection when the pin shears.
4. Does the quick-connect style offer any protection for the PTO shaft? I cant readily see any in the design.
5. Has anybody ever had damage done to their PTO shaft while using the quick-connect style that may have been avoided with the pin-style clutch?...if so, please share! With my 860 having live PTO/two-stage clutch, do I even need an override clutch? If not, I will probably use one anyway as an added measure of protection. My PTO shaft (pic C) seems to have both the pin hole AND the groove for the quick-connect. If anybody sees a reason why a quick-connect style wont work on this shaft, please let me know. It would be nice to know that BEFORE I order one in.
I took the o-run clutch off and checked the PTO shaft itself; no play and straight as an arrow. The pin I drove (pounded) out came out bent (pic B). I dont know how I would have done that driving it out. Im guessing this bend would this have been caused by excessive torqueit bent but not sheared.
1. Could the pin alone be the cause of the wobble?, and more importantly, the cause of the excessive flailing-around of the shaft?
Im surprised there arent any YouTube vids on overhauling these things, or at least I could bring up any. Anybody ever done that? 2. What happens when you take out the big snap ringyouve got to have pauls, and cogs and ball bearings and I dont know what all in there. Are they tricky? Or just what all is involved. I need a parts schematic of how theyre made up inside. I dont even see a brand name anywhere. Who makes these things anyway?
3. Do they just wear out beyond repair?, and if so, how can you tell? Any tolerances or play I can measure?
Regarding buying a new one: I like the quick-connect style, and was looking at the one our host offers. But the pin-style does seem to offer a level of protection when the pin shears.
4. Does the quick-connect style offer any protection for the PTO shaft? I cant readily see any in the design.
5. Has anybody ever had damage done to their PTO shaft while using the quick-connect style that may have been avoided with the pin-style clutch?...if so, please share! With my 860 having live PTO/two-stage clutch, do I even need an override clutch? If not, I will probably use one anyway as an added measure of protection. My PTO shaft (pic C) seems to have both the pin hole AND the groove for the quick-connect. If anybody sees a reason why a quick-connect style wont work on this shaft, please let me know. It would be nice to know that BEFORE I order one in.