Originally Posted by CACycling

Just get a new crankset with the same number of teeth on each ring (assuming 48/38/28 like my wife's Wildwood) and the same crank arm length (probably 175mm). Bottom bracket is based on the crankset so you may have to replace the BB if the new crankset requires a wider or narrower BB shaft. Park Tools website has good info on removal/installation. You'll need a crank puller and, if you change it, a tool to remove/install the BB.