In a similar fashion to the focusing lens position sensor, gently scrape away the mastic from the two sensors on the front of the zoom motor, and lift the sensors out.

On reassembly, secure the sensors as for the focusing lens position sensor.

Lift the two connectors off the back of the zoom motor.

Release the ribbon from all the pegs and guides holding it to the lens body. It should now only be attached to the lens back plate.