steveinohio
Member
My 1978 JD 4400 combine straw chopper bearings are sounding "noisy" or "dry sounding" when running at full speed. Both the bearings on each side still have the side covers on each of the bearings intact with no exposure of the rollers. In other words, they look okay for now. I was thinking of getting a grease needle to insert grease into each bearing but there is not enough clearance to do so. I've purchased new bearings (JD 9275) with lock collars (JD 9276). Here in Central Ohio not much favorable coming - don't know when I'll be in the fields. Would it be a good time to replace them now since they show no visual evidence of wearing out? Something tells me I should do so. The left side bearing doesn't appear to have that much difficulty to remove and reinstall. The right side bearing is a different story. How is the best way to pull the steel sheave off the shaft without distorting it and keeping run true? At this time I do not have any/all necessary pullers to do this. Any and all assistance is always appreciated.
