Combines 860 vibration

Hello I wonder if your bearing is going out, the big out put shaft bearing. I had mine going out of mine and got the same vibration. just a thought. Dale

The rear beater shaft bearing that that humoungous gawd awful heavy large pulley behind the cab is attached to. Make sure you have your ankle weights on when you pull it off. That's what it sounds like to me.

I took the belt tension off of those two shafts, and there dies not seem to be any play in the bearings, and while running, the bearings were not hot. But what puzzles me, is that after the vibration stops, while running, it dosen.t come back untill I dump. The vib. also dosen't come back every time I reengage the machine. And the vibration dosen't comeback when i stop to unplug the head. Could it still be the bearingsIJIJ there are 2900 hrs on the machine. and the bearings were greased frequently. Joe

Check the Bearings in the feederhouse, especially the one on the left side of the front beater Went out on my 760 years ago. good luck Martin

Real long shot here, but I've noticed a vibration in combines over the years when combining beans (you didn't say what crop) much like you describe. Bean dust settles on the low side of the cylinder and throws things out of balance till it comes off when you start running again. Try rolling the cylinder over slow a couple of times while you unload to dump the dust off and see if this helps. ..My .02................................Mark

I doubt it is the bearings or it would be constant. Also being that it doesnt have many hours and has been well greased makes me look somewhere else. We've had two machines with rear beater bearings that have gone out in the past year. That is a sustained vibration that will just about shake you out of the seat. Our 750's will intermittently run rough no matter what crop. When you engage the separator, especially at full throttle they will vibrate the most. Try engaging it at 1_4 throttle and slip it for about 20 seconds. Then engage it fully and rev it up. This almost always works on our old beasts. Good luck.

I always try to engage the machine at low speed. And I am running beans. I even tried disengaging letting it stop then restarting. But it was still there once it had started. This vib. felt sharper than when the cyl. gets off balance. I loosned everything up. Checked the belts, for flat spots. Put a bar against the main shaft and beater shaft, and couldn't notice any play , up or down or in or outIJIJIJ I did notice some rotational play in the main shaft, but did not think it excessive. Could this be causing some of the problemsIJ I put it all back together and didn't notice the vibration. I guess I find out sooner or later. Thanks Joe

I replace all of those 2 years ago along with a new feeder chain. But I'll check them. Could be. Thanks Joe

You know.....Mark is right I think. The more I think about this. Deere maximizers are terrible at this problem. last summer during wheat harvest I was in a field of weeds something terrible. After letting the combine set overnite when I went to restart I had a vibration I couldn't get rid of for nothing. After harvesting awhile it would go away. Shut the seperator down, unload, restart the seperator, back at square one again....vibration!! I've learned now from 3 years of running that deere the only time I shut that seperator off is between fields, fixes, and the end of the day. Otherwise it stays on All the time. Try this......leave the seperator on but just disengage the header. After you have unloaded and go back to cutting see if the vibration is there or gone. If it's gone then you have found your problem.....If it's still there then you now know that you are experiencing a vibration from something that dissappears when there is weight applied to the machine.....like a rough bearing from a final drive or something. I'm getting the impression your massey doesn't have the high inert cylinder option. Dad's both do and he doesn't experience this vibration like your talking. Also, if you've came from a newer combine and then climbed into the massey you are going to feel vibration......Welcome to the wonderful world of Perkins and I'll argue that till the day I die.

Also thought of one other thing......The typical massey shake and vibrate. With all the grain in the tank it can absorb that "shocking" from the machine and make it SEEM to run smoother or go away when in all actuallity it's still there and you don't notice it. With all you've done and still can't find it.......Run it till it breaks.