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#1
06-11-2013, 03:23 AM
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Rebuilt PTO clutch, and it's like a new machine! (Photos)
Per the advice I received here, I decided to rebuild my PTO clutch on my 100. I was having some issues with the blades stopping in nominally-sized grass, so I figured a rebuild was in order. While I was rebuilding the clutch, I decided to degrease, clean and paint it while I was at it. If you're going to do it, may as well do it right. Right?
As you can see, she came off of the machine a CRISPY CRITTER! I was actually shocked at how rough it looked. It almost looked like a 100 year old part.  I tore the thing down and attacked it with some carburetor cleaner. It did the job, but took forever. The grime seemed never-ending! I ended up having to used a toothbrush to get into the small spaces on the back of the clutch pulley. There was some mild pitting on the smooth plate surface of the clutch pulley, but I don't think it's going to hurt anything.  I pulled the bearing off while I was at it, and I'm glad I did! The previous owner painted the dang thing and it was so gummed up and uncared for, it barely even rotated. I installed a new locking collar and bearing. Installation was painless with a rubber mallet / and a hammer/punch for the locking collar. Isn't the collar a cool design? I thought it was!  The replacement bearing is made in China, which didn't impress me. Oh well, I suppose it will do.  The clutch rebuild kit provided the new clutch plate, new triangular center spring and anti-rattle springs (which I forgot to install). I tossed the old nuts and bought new ones at Lowes for 1/30th the price of factory replacements. The bolts were good. I tightened everything down and specced it out with the factory clutch gauge. A fresh coat of paint should keep rust at bay...for a while anyway!  I installed her on my machine tonight, along with a fresh set of new set screws for good measure. After getting her buttoned up, I couldn't resist putting on a headlamp and trying her out in some tall brush at night.  I could tell a difference immediately. When I engaged the blades, it was instantaneous, rather than a gradual wind up. I took her through probably 4 foot tall brush and she ate it up like Christmas pudding with a spoon in each hand! I mean effortless. No blade stopping, no bogging, just blazing trails like a mini brush hog. Half way through the yard, I realized that I was just running at about 1/2 throttle too! I'm looking forward to many years with my ol' 100. I do know one thing though, I don't want to have to take that cast iron front end off again for a long time! Finagling those 4 bottom bolts is a nightmare. ANyway, thanks for the advice on a clutch rebuild, it was just what I needed! 
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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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