![]() ![]() Remember that the pin on one side needs to be point forward and the other needs to point back. ![]() Also ensure you have a matching pair of pins as they have different tapers and two with different tapers will mean the cranks will not be in line. The nut will never pull it into position properly without a press or hammering, it will work loose and bend the pin, make annoying clicking noises and probably ruin the crank. Then ride for about 50-60 miles and check the nut is still tight. The purpose of the nut is not to pull the pin into place but to hold it there when it has been pressed or hammered into position. Position the crank arm in the press with the cotter lined up. Use a cotter press to push out the worn cotter bolt. Now carefully align and insert the new cotter pin, then reinstall and tighten down the cotter nut. This chrome plated tool was designed to remove and reset tapered crank cotters by applying tremendous power to the pin without damaging cups, bearings, cotter pins, or crank arms. Next, remove the cotter nut and press out the old cotter pin. Push the pin in, put on the washer, tighten nut (careful not to strip it as these are soft metal), hit the other end a few hard whacks with the hammer, tighten the nut again and repeat until the nut no longer comes slack when you hammer. Grease the new cotter pin before you begin. You don’t want to touch the new pad with your fingers because you’ll get oils on them. ![]() Next, remove the clip and then the pads using your pliers. You’ll have to carefully unbend the right side of the pin first (out of view). There is a lot of nonsense talked about cotterpins but it they are installed properly in the first place, they should give no trouble in service. Using a pair of needle-nose pliers, remove the cotter pin. A road bike, post 1960s would be fine with square taper cranks, look for period Stronglight and Milremo chainsets on Ebay, they're rarely that expensive. As you might have guessed, I nearly stripped the bolt and cant find the replacement at any major online retailer. What is the bike? If it's a roadster or a really old road bike, definitely leave it as it is. It uses pads identical to Shimano B01S but with a retaining bolt instead of a cotter pin. ![]()
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