Overhead Panel Controls And Components; Grade/Speed Warning Chart; Radio Speakers; Warning Alarm Buzzer - Komatsu 730E Operation & Maintenance Manual

OM3214
Operator Cab and Controls
OVERHEAD PANEL CONTROLS AND
COMPONENTS

GRADE/SPEED WARNING CHART

Grade/Speed Warning chart (Figure 32-6) provides
the recommended maximum truck speeds for
descending various grades with a loaded truck.
FIGURE 32-6. GRADE/SPEED WARNING
CHART
The operator must refer to the grade/speed warning
chart before descending any grade with a loaded
truck. Proper use of dynamic retarding will maintain a
safe speed.
DO NOT exceed the recommended maximum speed
when descending a grade with a loaded truck.
This decal may change with optional truck equipment
such as: wheel motor drive train ratios, retarder grids,
tire sizes, etc.

RADIO SPEAKERS

Radio speakers (9, Figure 32-1) for the AM/FM radio are
located at the far left and right of the overhead 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 in this module for a
detailed description of the functions and indicators
that will activate this alarm.

CAB RADIO

This panel will normally contain AM/FM radio (11,
Figure 32-1). Refer to Section 70 for a complete
description of the radio and its functions. Individual
customers may use this area for other purposes,
such as a two-way communications radio.

WARNING LIGHTS DIMMER CONTROL

Warning lights dimmer control (12, Figure 32-1) permits
the operator to adjust the brightness of the warning indi-
cator lights. This control may not be on all model trucks.
WARNING/STATUS INDICATOR LIGHT
PANEL
Warning/status indicator light panel (13, Figure 32-1)
contains an array of indicator lights to provide the
operator with important status messages concerning
selected truck functions. Refer to Overhead Status/
Warning Indicator Light Panel in this module for a
detailed description of these indicators.

AIR CLEANER VACUUM GAUGES

Air cleaner vacuum gauges (14,
Figure 32-1) provide a continuous
reading of maximum air cleaner
restriction reached during opera-
tion. The air cleaner(s) must be
serviced when the gauge(s) dis-
play 6.2 kPa (25 in. H
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 Multi-Function Turn Signal
Switch in this module for a location and description of
the windshield wiper and washer controls.
Operation - Section 32
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