sprocket ; sprocket-wheel ; sprocket gear ; chain wheel

sprocket sprocket-wheel sprocket gear chain wheel

left drive sprocket axle assembly

left drive wheel brake

left wheel sprocket

drive sprocket wheel

chain drive sprocket

chain sprocket drive

conveyor chain drive sprocket

timing chain drive sprocket

aft bulkhead left wheel well

left chain case

left drive circuit

left drive loop

left drive motor assembly

left drive pressure

left drive side

left drive speed sensor

left travel sprocket wheel