Detaching and attaching a tractor trailer combination
Fifth Wheel
King pin
greased
security jack
green or red light
communicate with the shipping department
landing gears - requires manual cranking up and down
1. green light
2. unlooked from the dock
3. remove wheel chock
4. remove flag
5. remove jack -left side to go down
6. see part 2 by clicking here ..... https://youtu.be/mdcYYfyJKo4
PLESE A COMMENT IF YOU HAVE ANY QUESTION OR SUGGESSION