My application is Schwinn Protocol 1.0 purchased in 2014. Up to this year (2021) this bike has served me well. This year it started clicking every time I pedaled hard. I've gone through all the usual suspects: derailleur and derailleur, seatpost, pedals, suspension but couldn't find the root cause. Now it's time to pull the handle and see if that's the problem. Schwinn uses a three-piece crank on this particular bike. I don't know who does it. In either case, unscrew the 14mm nut that holds the crank to the crank axle. At this point you need to remove the connecting rods from the axle. I tried a three-legged puller, but of course the crank builder had to round off the ends of the cranks, that didn't work. I started looking for an instrument. Park Tool had one and they have a series of videos on how to use it and which one to buy. So I bought ccp-22. It turned out to be the perfect tool for the job. The left handle came off without much effort. The right crank was a bit more stubborn, but without too much profanity. It is interesting that there was significant rust spalling on the crankcase as there were no gaskets on the case at all. I cleaned the bearings, added lots of marine grease, reinstalled the bearings and now my clicking noise is gone. This is the fourth or fifth parking tool I've bought. You can see the park bike rack in the picture (this thing is amazing and works surprisingly well). I was lucky with the Park instruments. I can't say enough good things about them and as an added bonus they are made in the USA. I highly recommend these tools.
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