By Steven Doetschman — fitness equipment technician and owner, Krislynn.comWhen something goes wrong with a Schwinn Airdyne drivetrain, knowing the names of each component helps you describe the problem accurately before calling for service. Steven Doetschman walks through the system from the pedal outward: the pedal itself (note the left side uses reverse thread), the crank arm (secured with a wedge pin), the connecting arm (links the crank to the back handles), the eccentric arm (the main bearing housing in the frame), and the bottom bracket. Understanding which part is actually failing helps a technician diagnose and prepare for the repair faster.
Full transcript
hi my name is Steve and I want to talk to you about certain parts on the drivetrain of a Schwinn airline that way you can easily describe what’s wrong with it when you’re telling somebody we’re trying to figure out what parts you need first item is the pedal a lot of times people will call up and say my pedal is blues well we really need to find out whether it’s your pet over to the way you put your foot on or is it the crank arm which is what the pedal screws into you or is it the connecting arm which connects the front handles to the back handles on the bike or is it the eccentric arm or is it the bottom bracket so what I’d like to do is go through these different parts and show you where they go on the bike first part is the bottom bracket it looks like this and when it’s installed on the bike it looks like this okay and it’s the main bearing in your bike attached to that main bearing is an eccentric arm you can see what it looks like and here’s one attached to the bike okay that eccentric arm is attached using a wedge pin okay and a wedge pin looks like so okay and it has a flat spot on it and when you push it in it wedges that against the bottom bracket so here’s one that’s installed on a an eccentric arm on the left side as you’re seated on the bike then from there you need to have a nylon washer which fits over the eccentric arm then the connecting arm slide you on then another nylon washer and then your crank arm slides alone and then your wedge pin which goes through the crank arm and that’s how you assemble both Drive sides of the Schwinn Aerodyne the last thing is the pedal pedal is reverse thread left handed thread just make sure you turn it left to tighten it and right to loosen because it’s on the left-hand side there’s usually an L on the crank and an L on the pedal which can help you to discern which side they belong those are some information about parts