PREPARATION FOR USE - CONTINUED
Prior to Towing Check List - Continued
Make an operational check of the electrical system by checking tow vehicle and dolly set brake lights, running
lights, turn signals, and blackout lights.
Double check that all ISO interface bolts (12) are tight and properly installed, and that all castle nuts are tight
and all safety pins are correctly inserted and locked. If properly installed, the arrows on the ends of the pins
will be horizontal to the right or left.
Never tow more than one loaded dolly set.
Make sure that only one loaded dolly is being towed.
Ensure that front and rear auxiliary brake control valves are in the extended position. That indicates sufficient
air pressure from prime mover for dolly set brake system.