This procedure tells you how to replace the guide pin  and trap door  on a umbrella tool changer.
Remove all tools from the tool changer. Put wooden blocks on the table. Put a bottle jack on the wooden blocks.
Jog the table below the center of the carousel plate.
Support the carousel plate with the bottle jack.
Push [POWER OFF].
Remove the (6) SHCS from the carousel plate. With a second person remove the carousel plate.
Raise the bottle jack up to support the weight of the bearing housing for the star assembly.
Remove the cover panel . Remove the vertical axle nylon nut  and the flat washer . Remove the guide pin assembly  from the trap door cover, behind the carriage assembly. Replace the guide pin assembly  if it is damaged.
Lower the bearing housing for the star assembly  and remove it from the machine.
Remove the trap door, the (2) nylon washers  from the top and bottom of the trap door, and the (3) plastic riders  from the bottom of the trap door. Replace the washers  and the riders  if they are damaged.
Apply Mobil 460 grease to the nylon washers , plastic riders , and the trap door guide slot . Install the washers , riders , and the new trap door.
Install the bearing housing for the star assembly . Install the vertical axle nylon nut and flat washer  in the carriage assembly. Install the cover panel . Apply Mobil 460 grease the tool slots  on the star assembly.
Install the guide pin assembly .
With the aid of a second person, put the carousel plate  and the cover plate  onto the bottle jack. While the second person balances the carousel plate  on the jack:
Torque the screws to 25 ft-lbs.