Model 50 bearing noise in first reduction area

[mdross1]

My brothers 50 has had a bearing noise down in the first reduction area for a while now. I hear it is common in this size tractor including the 520/530 series. I would think it might be in the mainshaft as my first guess anyone else have any ideas?

 

[Partspring]

Check the roller brg. in the first reduction gear cover it is located in the small casting secured with 2 3/8 in. cap screws.

 

[mdross1]

Brother says he has but was afraid to pull it because the shaft might drop. He is getting braver as he goes along.