INSTRUMENT PANEL (Cont).
Control or Indicator
Trailer Air Supply
Red octagonal-shaped knob supplies air to trailer
air reservoirs. Push in to charge trailer air supply
and release trailer spring brakes. Pull out to shut
off air supply.
Control Valve Lever
Locks and unlocks driveline based on changing
LOCK. In poor traction conditions, stop vehicle
and place lever in LOCK position to lock up
(b) UNLOCK. When conditions are back to
normal, move left to UNLOCK while vehicle is