Joined: Feb 2012
Posts: 19,290
Likes: 5,383
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
I believe this LH crank arm has a cap which also acts as the extractor surface. So as the retaining bolt is loosened it presses against the cap's inside and pushes the arm off the axle. the axle/RH arm should be able to be pulled out the bearings, sometimes a wooden whack device helps. The bearing "cups" need a wrench (like a Park BBT-9) and will unthread with some initial effort to loosen. The drive side has LH threads and the other side has RH threads. Andy.