Grade/Speed Warning Chart; Radio Speakers; Warning Alarm Buzzer; Cab Radio - Komatsu 730E Operation & Maintenance Manual

OM3223
Operator Cab and Controls
INSTRUMENT PANEL
Instrument panel (7, Figure 32-1) includes a wide
variety of switches, gauges, and indicators. Refer to
instrument panel and indicator lights for a detailed
description of function and location of these compo-
nents.
GRADE / SPEED WARNING CHART
Grade/speed warning chart (8, Figure 32-1) provides
the recommended maximum truck speeds for
descending various grades with a loaded truck.
FIGURE 32-6. GRADE SPEED CHART
The operator is to reference this chart before
descending any grade with a loaded truck. Proper
use of dynamic retarding will maintain a safe speed.
DO NOT exceed these recommended maximum
speeds when descending grades with a loaded truck.
This decal may change with optional truck equipment
such as: wheel motor drive train ratios, retarder grids,
tire sizes, etc.
Always refer to this decal in the operator's cab, and
follow these recommendations for truck operation.

RADIO SPEAKERS

Radio speakers (9, Figure 32-1) for the AM/FM ste-
reo are located at the far left and right of the over-
head panel.

WARNING ALARM BUZZER

Warning alarm buzzer (10, Figure 32-1) will sound
when activated by any one of several truck functions.
Refer to instrument panel and indicator lights, for a
detailed description of functions and indicators that
will activate this alarm.

CAB RADIO

This panel will normally contain an AM/FM stereo
(11, Figure 32-1). Refer to Section 7 for a more com-
plete description of the radio and its functions. Indi-
vidual customers may use this area for other
purposes, such as a two-way communications radio.

WARNING LIGHTS DIMMER CONTROL

Warning lights dimmer control knob (12, Figure 32-1)
permits the operator to adjust the brightness of the
warning indicator lights. This control may not be on
all model trucks.
WARNING INDICATOR LIGHT PANEL
Warning indicator light panel (13, Figure 32-1) con-
tains an array of indicator lights to provide the opera-
tor with important status messages concerning
selected truck functions. Refer to instrument panel
and indicator lights, for a detailed description of these
indicators.

AIR CLEANER VACUUM GAUGES

Air cleaner vacuum gauges (14,
Figure 32-1) provide a continu-
ous reading of maximum air
cleaner restriction reached dur-
ing operation. The air cleaner(s)
should be serviced when the
gauge(s) display the following
maximum recommended restric-
tion:
Komatsu Engine: . . . . . . 25 inches of H2O vacuum.
NOTE: After service, push the reset button on the
face of the gauge to allow the gauge to return to
zero.

WINDSHIELD WIPERS

Windshield wipers (15, Figure 32-1) are powered by
an electric motor. Refer to operator cab and controls,
for a location and description of the windshield wiper
and washer controls.
Operation - Section 32
Page 32-5