OPERATION OF TRACTOR AND FIFTH WHEEL (Contd)
(16) Check semitrailer lights:
Turn light switch (1) to STOP TURN position or SER DRIVE (service drive) position.
Operate turn signal switch (4) and direct ground guide to check for proper operation of semitrailer
Depress brake pedal and direct ground guide to check for proper operation of semitrailer stoplights.
(17) Turn crank (12) to raise landing gear (14) on semitrailer.
(18) Stow landing gear float pads (15) in racks (13), and remove wheel chocks (16).