I haven't played the game, but there's a walkthrough HERE
that might help you.
An extract from that, which I think is the spot where you are having trouble:
Open the lid of the long crate connected to the transport.
Use the crane controls to attach the hook to the weapon part (exit the controls and right-click the hook for detailed instructions on positioning the hook).
Quickly lift the weapon part directly upwards until it is level with the girder.
Without exiting the crane controls, use the roll of tape on the left arrow of the crane controls.
Quickly interact with the opened crate.