I agree,I would replace both oil seals and also remove the axle housings ,carrier tubes, whatever you want to call them, as you will be surprised what nasty gook is hiding in there that won't come out unless you remove them. It doesn't make much sense to put in new oil (Hytran) and leave a pint or two of nasty oil in those housings to mix with your new clean oil.
As for the bearings,,,,,,,jack up the tractor and move the axle flange up and down and see if there is any movement. IMHO a little is okay, but not much. I guess you have to use your own judgement on this. I have replaced bushings on 100's but I have never replaced needle bearings on later tractors,so I don't now what it involves.
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Cub Cadet 100 "Super" (red) show tractor
Cub Cadet 100 show tractor.
Cub Cadet 100 worker
Cub Cadet 106 refurbished/modified (red/white)
Cub Cadet 128 "refurbished"
Cub Cadet 1450 my dedicated mowing tractor
Tractors awaiting refurbishment:100 with fenders,128,73 with creeper and fenders,106,122,147,126 with creeper.
100 w/pan seat and 3 point hitch
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