My washer recently became loud when on spin cycle. A few loads later I could smell a burning smell. After a while longer, the tub won't spin at all.
I took off the front panel and ran through the spin cycle test on the diagnostic menu. When doing this, the bottom-most extending nut connected to the pulley on the bottom of the motor-clutch assembly would spin, but the pulley attached to the clutch would not move and neither would the drive belt.
After unplugging the machine, I attempted to see if I could turn the transmission both ways (as several web sites suggested) by simply pulling the drive belt in either direction. When doing this, I could rotate the transmission one direction, but not the other direction.
As a further test, I loosened the motor and removed the drive belt. With the motor-clutch assembly now uncoupled from the transmission, I ran the spin cycle test again (from the diagnostic menu) to see if the pulley spun when uncoupled from the transmission. The pulley DID spin without a drive belt on it (as opposed to before, when the pulley would not move). While the belt was off the washer, I also attempted to rotate the transmission in both directions. The transmission WOULD ROTATE COUNTER-CLOCKWISE (as viewed from the bottom of the washer looking towards the top), but WOULD NOT ROTATE CLOCKWISE.
My thinking is that it is probably the transmission, but I am not sure because by removing the drive belt, I completely unloaded the clutch, so I'm wondering if the clutch may be the culprit.
Could you please tell me if you're confident I could fix this by replacing the transmission or if you think further diagnosis is recommended. I am an electrician and a degreed mechanical engineer, so I am very confident in my ability to perform any necessary follow-up testing/diagnosis. Please advise.