I've been fighting my MX6 not moving much and tipping over like a flipped turtle for weeks. I can see the belt turning while in use so I knew nothing was jamming the unit. Tore down and cleaned the unit twice, inspected for any defects like a bad bearing, even put silicone lube on the cover seal thinking it wasn't sealing. Just could not figure it out. The only thing I couldn't really inspect was this control drive so I ordered it so I could check it off my list. As I was pulling the belt off, I noticed that there was vertical play on the top cogged wheel (the one that attaches to this unit. Since the belt was turning, I didn't expect for this unit to be bad. After I noticed that, it made total sense to why my MX6 wasn't moving. Installed the unit and works like new! So, if your MX6/8 isn't moving much, and bearings spin freely, no hose leaks, belts are good (by the way, make sure you actually have tread on the rubber. When you look at it in the water, you may see the tread marks but they may be totally worn and not grabbing) and no physical obstruction or defects... DO THIS: With the pump off, grab your cleaner out of the pool (another tip: when pulling it out of the pool, don't pull it up by the hose. Use your net to bring it up high enough and then grab it. The water weight and resistance will destroy your hose, which is a common complaint on the OE hose. Just like pulling an electrical cord by the cord vs the plug). Lay it on the ground and simply push down gently on the top wheel. There should be very little play. If you can move it like a loose tooth, this is what's causing all of your problems. Good swimming!
Rating:
[5 of 5 Stars!]