Hi - I have a Kitchen Aid Professional 600 series mixer
. The planetary housing has slid off, and will not remain in place when put back on. All the information I have found, including the repair manual show the main shaft as attached to the housing, and then the shaft is secured to the mixer. On mine, however, the housing has slid off the main shaft, and there is no obvious way to secure it back on. On different models, there is a pin that inserts through the housing through a hole in the main shaft, but the Pro 600 does not have this.
Any help would be greatly appreciated!