Table 2-4. Instrument Panel and Controls (Continued)
Twin Agent 4x4 Firefighting Truck
(Refer to Figure 2-4)
Control or Indicator
Heater/Defroster Controls (Continued).
TEMPERATURE CONTROL LEVER. This lever regulates the tem-
perature of the air entering the vehicle. The far right position (HOT)
provides the maximum heated air, and the far left position (OFF)
provides minimum heated air.
AIR SELECTOR LEVER. This lever activates the heater or defroster
DEF (Defrost). In this position, most of the air is delivered to the
windshield with a small amount to the floor outlets.
AIR OUTLET. This position provides the desired air flow distribution
between heat and defrost.
Parking Brake Control Knob
The Parking Brake control Knob activates the air brake system to
hold the vehicle in a parked position and to assist in bringing the
vehicle to an emergency stop.
To apply the parking brake, pull out control knob.
To release the parking brake, push in on control knob.