3.9.2 Removing the Step Platform Assembly
If you want to remove the step platform assembly in order to reach lower
aircraft door sill heights, perform the following steps:
1. Place stair and A-frame in DOWN position.
2. Remove the right-hand and left-hand wings.
3. Remove the sixteen ½-inch capscrews that hold the step platform to the
main deck.
4. Using appropriate slings and forklift (or crane), lift the step platform off of
the main deck and place on ground away from the work area.
5. Remove the wing handrails from the wings.
6. Reinstall the wings. Refer to Chapter 2.
NOTICE!
If you remove the step platform, you must install the deck bumper
onto the main deck. The bumper provides structural support to the deck as well
as protecting aircraft from damage.
7. Install the deck bumper assembly to the front of the deck. Place washers
and locknuts on the four studs after they are installed through the deck
frame.
3.9.3 Reinstalling the Step Platform Assembly
Follow the above procedures in reverse order.
NOTICE!
The deck bumper must be removed if the step platform is installed. If
left on, the deck bumper will block the stair operator's view of the platform
bumper, possibly resulting in damage to aircraft.
CHAPTER 2 MAINTENANCE
SEPTEMBER 30, 2008
3 REMOVAL AND INSTALLATION
PAGE 9
Truck Mounted Passenger Stair TMPS-200
Manual No. 307559
