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Discussion Starter #1
We have a 2188 (2700 sep hrs)
We harvest wheat, barley, canola, oats, flax.

Problem: A bad noise has developed when the unload auger is in use. When unloading canola it usually starts unloading for around 10-15 seconds with little or no noise, then a noticable burr, burr, burr, burr sound begins and continues till the load is nearly empty. When dumping wheat the noise is present from start to finish usually. The noise appears to be worst when unload auger is working hard, which makes sense.

Where is the noise coming from, you ask?
With the side panel up during unloading, the worst sound seems to come from the horizontal shaft coming out the side of the gearbox at the bottom of the vertical auger. With my finger just touching the end of this shaft during use, a very deep pulsing vibration can be felt. However, touching the gearbox itself during unloading reveals less vibration. Oil level in gearbox is fine. Can't find any obvious bearings out. Replaced both the 50chain and the 40chain with no difference.

Diagnosing sounds and vibrations can be difficult, as these can travel down shafts and augers from their original location, making the original problem hard to find.

Possible problems:
#1 Gears in bottom gearbox are worn.
#2 Small gearbox/universal joint in top elbow is worn bad.
#3 Something in horizontal cleanout augers is worn.

Luckily for us, we have managed to combine over 1500 acres with this problem, and have only one quarter section of flax left. However, we need to address this issue once and for all and fix it!

If anybody has had this same problem, please let me know how you diagnosed it and fixed it. Also, feel free to ask more questions.

Thanks,
Don
 

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Have you tried running auger without the 40 chain, to isolate if the noise is from the cross augers. Also there should be a bearing at the joint in the middle of the horizontal swing out auger which if gone could make some noise.
 
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