5REMOVE the three crossbars from the gearbox housing and mark the endplate and housing with the same punch method used on the motor. Remove the end-plate to access the planetary gearset inside. If you’re not familiar with planetary gears, take a minute to spin the input shaft and see the speed change between each gear. Pull the gears out and place them in order on a bench or clean area. You’ll need to pay attention to any plastic bushings and the sun gear on the smallest planetary gearset, to ensure they will be reinstalled correctly.