Old mod from 2010, released as is with minor improvements. Simple and road friendly mobile crane for very light tasks. Credits to AIN_002, Craneman and BadBoy.

Controls:
F1-2 Rotate crane
F3-4 Boom up/down
F5-6 Hook up/down
F7-8 Retract/extend boom
F9-10 Crab steering
F11-12 Trailer hitch up/down

Ctrl+F1-2 Legs in/out
Ctrl+F3-4 Legs up/down
Ctrl+F5-6 Cab tilt
Ctrl+F11-12 Suspension up/down