Joined: Oct 2018
Posts: 2,182
Likes: 1,055
From: Columbus, OH
Bikes: Pake C'Mute Touring/Commuter Build, 1989 Kona Cinder Cone, 1995 Trek 5200, 1973 Raleigh Super Course FG, 1969 Raleigh Superbe, 1986 Miyata Nine : 1960/61 Montgomery Ward Hawthorne "thrift" 3 speed, by Hercules (sold), 1966 Schwinn Deluxe Racer (sold)
If it's anything like a Shimano cartridge bb, that LH side is interference fit. It should slide off so you can install the RH side.
You might fashion a puller with a bench vise. Position the jaws until they're narrower than the cup but wider than the bracket, and see if a little parallel pressure keeps it from binding up while you slide the cartridge out. Lube won't hurt, either.
Last edited by Unca_Sam; 03-09-20 at 06:57 AM.