Hello Alfonzotan,
I agree with lilshawn, remove the records and transport separately, tape the gripper arm down and the trurntable and tone arm, you may need to have some small pieces of polystyrene to pack under the tone arm (large elastic bands can also come in handy).
The mechanism should be able to be locked down to the cabinet in the four corners.
Check items such has the amplifier, coin mechanism in fact anything that is just hooked in place, secure with screws (always check on the length of screws if screwing into the side of the cabinet) tape or in the case of the coin mechanism you can remove it. Check that lights are secure in their lamp holders and tape if necessary.
One you have got the jukebox on the truck or trailer, because it is castors you will need to lift it slightly off the floor, you could use a couple of 4 x 2's or some thick polystyrene, I would put plenty of layers of bubble wrap over the glasses and plastic trim before covering with blankets.
Lilshawn is correct re gettin a strap around the middle section, if you can also get a strap around the bottom trim.
Please let us know how you get on with the removal.
Regards
Alan
Alan Hood
ami-man
UK