[RockefellerGG]

Time to disassemble the transmission. When you split the cases, the gears may be in the opposite case side... mine came out this way, so here it goes:



Slide out the shift rails:




I marked the position of the shift drum, so I can make sure it goes back in the right orientation:


Removed the shift drum:


Carefully remove the gear sets, keeping track of what went where: