TM 10-3950-672-10
g. Heater/Defroster Air Temperature Control. The heater/defroster air TEMP control (20) is located on the left
side of the cab beside the seat.
It is a push-pull cable control that positions the temperature control on the heater unit. Pull the control knob for
warm air and push it in for cool air.
h. Heater/Defroster Fan Switch. The heater/defroster FAN switch (19) is located on the left side of the cab beside
the seat to the rear of the heater/defroster air TEMP control. The switch controls the flow of air and has three
positions; OFF, HI, and LO.
i. Cab Circulating Fan. The cab circulating fan (2) is located on the dash on the right side of the cab. It is
mounted to a ball joint so it can be directed to different parts of the cab.
j. Fire Extinguisher. The fire extinguisher (24) is retained in a bracket mounted below the main control panel on
the left side.
k. Spotlight. The spotlight (1) is located on the right side of the cab. It can be rotated 360 degrees and is
illuminated by an on-off switch located on the spotlight handle.
I. Alternator Discharging Indicator. The ALTERNATOR DISCHARGING indicator (37) is a red flashing light
located on the main control panel to the left of the steering wheel. The light flashes whenever there is a failure in
the battery charging system.
m. Boom Light Switch. The boom light (WORK LIGHT) switch (4) is located on the lower right side of the main
control panel. The switch is an ON/OFF toggle switch that turns on the two work lights mounted on the boom
base section.
n. Level Indicator. A level indicator is (12) installed on the right side of the cab in front of the shift lever. The
indicator provides the operator with a visual indication for determining the levelness of the machine.
o. Operator's Seat Controls. There are three adjustments for the operator's seat. The first is a lever (13) that
enables the seat to slide up and back. The second is a knob (14) which controls the seat back lumbar support.
The third is a lever (1 6) to adjust the seat height. The seat features a seat belt (15) and a documentation
storage bag attached to the seat back.
p. Cab Door Latch and Lock. A keyed cab door latch and lock (29) can be used to secure the crane cab. If
locking the cab door, be sure to slide the cab door window shut until the window locking mechanism latches.
5-1.3
Crane Controls and Indicators.
a. Foot Brake Pedal. The foot brake pedal (8) is located to the right of the steering column next to the accelerator
pedal. Depressing the pedal actuates a master cylinder that applies the hydraulic service brakes.
5-6
