The answer is behind the wheel is a small hole that you have too push with a small screwdriver to push out the wheel pin. This is difficult just keep at it. The wheel pins and at least one of the 2 bearing will be unusable.
Guys I have a bad cable on the 9550 and I am going to change it myself. There are 2 cable chooses.
1) standard cable no swivel $200
2) Newer design with a swivel $300
The question is the swivel worth $100 price difference?