TM 9-2320-272-10
2-3. CHASSIS CONTROLS AND INDICATORS (Contd)
Key
Item and Function
1
PERSONNEL HEATER VENTVALVE, located in engine compartment, is turned counterclockwise to purge
personnel hot water heater of air.
2
WINDSHIELD WIPER MOTOR, located on each front window, powers windshield wipers.
3
WING NUT, located on each side of window, is tightened to hold window in open position.
4
LATCHING HANDLE secures window in closed position.
5
WARNING ALARM BUZZER is located above left cowl vent. The alarm sounds when airbrake system pressure
drops below 50-60 psi (345-414 kPa) or when parking brake is engaged.
6
FUEL TANK FILLER CAP is turned counterclockwise and removed for fuel servicing.
7
PRIMARY DRAINVALVE, located on right side of vehicle, is turned counterclockwise to drain water from primary
brake system air reservoir.
8
SECONDARY DRAINVALVE, located on right side of vehicle, is turned counterclockwise to drain water from
secondary brake system air reservoir.
9
WET TANK DRAINVALVE, located on right side of vehicle, is turned counterclockwise to drain water from brake
system wet tank air reservoir.
10
SPRING BRAKE DRAINVALVE, located on right side of vehicle, is turned counterclockwise to drain water from
spring brake system air reservoir.
11
TOOLBOX LATCH HANDLE is turned up to unlatch and open toolbox.
12
SLAVE RECEPTACLE, located on right rear side of cab, is plug-in point for an external power source required to
slave start vehicle when batteries have become discharged.
2-12
