When deployed, the tail lift provides a work platform for the crew members designated
as parallel module pinners during bridging operations. It comprises a foldout platform
and extending walkway sections. The tail lift is attached to mounting brackets on the
vehicle chassis. It is deployed by hydraulic cylinders, controlled by a tail lift handset.
Tail lift Platform
The tail lift platform (Figure 2. 4) is located at the rear of the launch vehicle and
consists of both folding and extending sections.
The platform unfolds and extends to form a platform 19 ft 4 in (5.9 m) long (across the
rear of the vehicle) and 2 ft 11 in (0.9 m) wide. Safety handrails 3 ft 6 in (1.07 m) high
are inserted around the perimeter of the platform.
Tail lift Hydraulic Cylinders and Controls
Hydraulic swing, lift and tilt cylinders are operated remotely from the tail lift handset.
The height of the tail lift may be adjusted to position it at the most convenient level for
the height of the crewmembers. In the event of loss of electrical power, direct manual
operation is possible from the selector valve. An emergency stop button is located
below the selector switches on the tail lift pendant Figure 2. 3.