Raddle Chain Slip Clutch

nh8260 · Mar 10, 2016

I've had an issue ever since I've owned my Gleaner K, the raddle chain slip clutch will slip and I can never find anything that is stuck or in a bind. Usually cutting the thrasher off and back on will clear the jam and i can go back to picking. The jaws are in really good shape, last fall it did it, never could find the cause so I removed the nut and spring, then added a washer, picked good until today and it slipped with 4 rows to go. I checked everywhere, removed the front cover, the side panels, could not see anything so I had to leave the 4 rows and took it back to the farm. Do you think I need to add one more washer? Or does anyone know a trick to get the jam cleared out and back going? Its aggravating more than anything, esp when you are miles down the road.

Old bob. · Mar 10, 2016

Put on a new set of jaws. See how you get along then. Good luck.

Bob Bancroft · Mar 11, 2016

As I recall, you should be able to turn the raddle system by hand from the drive sprocket, with the drive chain removed. Have you tried that? Is the raddle chain too tight? It can't be snugged right up because the links fill with grain dust, and the raddle actually tightens up a little on its own. Are the slides/idler pulleys(whichever it has) smooth and free of grooves? If pulleys, do they turn OK?

A new spring on the clutch can be tried, as well as the jaws. Just be careful. I got some damage on my F2 shortly after I bought it. Some idiot had put a trap door spring on the raddle slip clutch, and I didn't notice it! And this I can't remember- if the location of the shaft in the bearings has any effect on the slip clutch, or if there's a step in the shaft, so the shaft position isn't really critical.

4020 electrician · Mar 11, 2016

Try a new set of jaws. On the F we had it was slipping because I didn't know my dad was greasing it.. They slip when over greased in my experience.

paul · Mar 11, 2016

Had that on my M3 last fall.

Maddening.

Was up to the 3rd washer, I know that isn't a good plan, but couldn't find anything.

The straw walker bearings are not so open on an M3, pan under them. Finally saw through a 1 inch space with the walkers just right, corn husks were wrapping up on the walker bearings and causing friction. It was showing up when dew fell, conditions get tough. But the devil if I could figure it out for 3 days.....

Probably not your exact problem, but it would keep tracking it down, the extra washers aren't a good plan. I know it gets a person by, but someday something will bust, keep looking for the actual problem......

Paul

JMS/.MN · Mar 11, 2016

Along with new jaws (even if the old are not broken), check how the slats run over the sheet metal, especially at each end...nothing bent to catch stalks or a cob. Also, cob pieces get into the sprocket, or under the chain. Adding washers is not a good idea- too many will eliminate the possibility of the jaws separating enough to slip the clutch, and then parts will break. The system works well, but sometimes difficult to find the snag.

centash · Mar 12, 2016

Get the cob shield that fits right behind the raddle. This keeps cobs from going around the end of the raddle and getting caught there or under the raddle. They fall out once you turn it backwards and then you don't, then know what caused the snag,
. Also, if the floor of the raddle is bellied or sagging a bit in the Centre, cobs will get caught under a slat there and cause it to stop.

Ben

Raddle Chain Slip Clutch

nh8260

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Old bob.

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Bob Bancroft

Well-known Member

4020 electrician

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paul

Well-known Member

JMS/.MN

Well-known Member

centash

Well-known Member

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