Continue to unfold the A-frame until the slings do not contact launch vehicle.
(Cylinders have check valves and can be stopped in any position).
Deploy the folding walkways.
Raise the tail lift so that it touches the A-frame pads, and re-strap it.
Remove the crane jib transportation pin.
Ensure the lever for crane /stabilizer is in the crane position.
Figure 11. 28 A-frame With Walkways Unfolded