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#21
05-11-2010, 10:49 PM
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Uhhhmmm, in picture #4, is that bearing seal just a lump of melted plastic???!!!
If that's grease, it's waaaay too much for a motor. If it's plastic, I think we know where your problem is. New bearings from Fastenal could make your world a better place. I just figured out my bearings are out, so I'll be ordering a set myself. When I bought bearings for my air compressor motor, I was amazed at the price! Try them. I'm not associated with them, they've just impressed me with the stuff they carry.
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--------------------- Jim in Lafayette, CO Cub Cadet 122, 126 
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#22
05-12-2010, 09:16 AM
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The commutator looks good, brushes also.
I'd turn the bearings to check for roughness/play and if good, no need to replace them. I would rather have a little extra grease from the bearing than none, but there seems to be an excessive amount there. That is just a plain unit with optional bearing in the rear, it is not the one for a power steering pump which I have attached a picture. The shaft shows a little scarring from the pulley slipping, so I am with you on putting in a woodruff key and you’re good to go. The little rust inside hurts nothing.
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#23
05-12-2010, 09:57 AM
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I now understand why there was no woodruff key.. the spacer behind the pulley was too short by at least 1/4 inch... I'm now wondering if the pulley is the wrong one and that may be leading to the copious amounts of black "dust" on the front of the S/G.
My replacement "rebuilt" unit will be here on Friday, so we'll have a comparison look see at that unit and the PO of my cub says a local Alternator shop has one of his old S/G's that I plan on picking up for parts... This has been quite an adventure so far.. I was thrilled to at least get the tractor running last night to mow...
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1970 127
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.
MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.
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