Clutch for FAV6800AWW series 15

Last night, the drive belt on my Neptune TL started to squeal at the start of the wash cycle (I think). Has the clutch seized? I can easily rotate the inner drum by hand in the CCW direction, but it immmediately locks up in the CW direction. I have removed both tumblers and there is nothing jammed in the gear driving each one. Could something have gotten jammed inside the transmission or maybe I have bad bearings? Is my next step to remove the tumbler bearings then the transmission and spinner from inside the wash tub (I have the service manual)? Since this is a series 15 machine, is Part Number 12002211 the correct clutch and pulley assembly? What other parts (bearings, seals) should I replace while I have it apart? Thanks in advance for any help