Komatsu 830E Shop Manual page 702

(13, Figure 5-7) PARKING BRAKE CONTROL
The parking brake is spring
applied and hydraulically
released. It is designed to hold
a stationary truck when the
engine is shut down and the
keyswitch is turned OFF.
Operation
1. Stop truck, then press the rocker switch (13) on
the top side toward the "On" symbol to apply
the parking brake.
2. To release, press the rocker switch on the bot-
tom side toward the "Off" symbol.
The truck must be completely stopped before
applying the parking brake or damage may occur
to the parking brake
Do not use the parking brake at the shovel or
dump. With the keyswitch ON and the engine run-
ning, sudden shock caused by loading or dump-
ing could cause the system's motion sensor to
RELEASE the parking brake.
When the key switch is ON and the parking brake is
applied, the Parking Brake indicator light will be illu-
minated on the Overhead Display.
(14, Figure 5-7) TACHOMETER
The tachometer registers engine crankshaft speed in
hundreds of revolutions per minute (RPM).
Governed RPM (Komatsu Engine)
• Low Idle: 750 RPM
• High Idle, No load: 1910 RPM Maximum
• High Idle, loaded: 1900 RPM
(15, Figure 5-7) RIGHT TURN SIGNAL INDICATOR
This indicator illuminates to
indicate the right turn signals
are operating when the turn
signal lever on the steering col-
umn is moved upward. Moving
the lever to its center position
will turn the indicator OFF.
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(16, Figure 5-7) HIGH BEAM INDICATOR
The high beam indicator when
lit, indicates that the truck
headlights are on "High" beam.
To switch headlights to "High"
beam, push the turn indicator
lever away from the steering
wheel. For "Low" beam, pull
the lever toward the steering
wheel.
(17, Figure 5-7) LEFT TURN SIGNAL INDICATOR
This indicator illuminates to
indicate the left turn signals are
operating when the turn signal
lever on the steering column is
moved downward. Moving the
lever to its center position will
turn the indicator "Off".
(18, Figure 5-7) SPEEDOME-
TER / PAYLOAD METER
The speedometer indicates the truck speed in miles
per hour (MPH) or with the optional speedometer, it
may indicate truck speed in kilometers per hour
(KPH). The display also shows Payload Meter infor-
mation.
(19, Figure 5-7) VOLTMETER
The voltmeter indicates the voltage of the 24VDC
battery system. Normal indi-
cated voltage at high RPM is
27 to 28 volts with batteries in
fully charged condition. When
the key switch is ON and the
engine is NOT running, the
voltmeter indicates
charge condition.
(20, Figure 5-7) ENGINE OIL PRESSURE GAUGE
The engine oil pressure gauge indicates pressure in
the engine lubrication system
in pounds per square inch
(psi). Normal operating pres-
sure after engine warm up
should be:
• Idle: minimum: 20 psi (138
kPa),
nominal: 25 psi (172
kPa)
• Rated Speed - minimum: 40 psi (276 kPa),
nominal: 65 psi (448 kPa)
Operator Controls
battery
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