Komatsu 830E Shop Manual page 701

(6, Figure 5-7) PANEL ILLUMINATION LIGHTS
The instrument panel illumination lights are con-
trolled by the panel light dimmer rheostat (29).
(7, Figure 5-7) CAB AIR CONDITIONER/HEATER
VENTS
The vents are spherically mounted to direct air flow
as desired.
(8, Figure 5-7) ENGINE COLD WEATHER START-
ING AID (Optional)
The optional Engine Starting
Aid switch is spring loaded to
the OFF position. This system
should be used only when
ambient air temperature is
below 50° F (10° C).
Operation
1. Press switch to the ON position to inject ether
into the engine air intake while cranking the
engine for three (3) seconds maximum and
then release starting aid switch.
2. If the engine does not start, wait at least fifteen
(15) seconds before repeating the procedure.
(9, Figure 5-7) ROTATING BEACON LIGHT
SWITCH (Optional)
This switch (9) will turn on the
optional rotating beacon when
pressed to the ON position.
(10, Figure 5-7) HEATED MIR-
ROR SWITCH (OPTIONAL)
If truck is equipped with the
OPTIONAL Heated Mirror, it
will be activated by this rocker
type switch when it is pressed
toward the ON position.
(11, Figure 5-7) BLANK (Not
Used In This Application)
Reserved for future options.
N05056
(12, Figure 5-7) WHEEL BRAKE LOCK CONTROL
The Wheel Brake Lock should be used with the
engine running for dumping and loading operations
only. The brake lock switch actuates the hydraulic
brake system which locks the rear wheel service
brakes only.
Operation
1. When pulling into shovel or dump area, stop the
truck using the service brake pedal.
2. When truck is completely stopped and in posi-
tion, apply the brake lock by pressing the rocker
switch to the ON position.
• Use at shovel and dump only to hold truck in
position
• Do not use to stop truck unless the foot-
operated treadle valve is inoperative. Use of
this switch applies rear service brakes at full,
unmodulated pressure.
• Do not use brake lock for parking. With
engine stopped, hydraulic pressure will bleed
down, allowing brakes to release.
When the wheel brake lock is applied, the Service
Brake Lamp on the Overhead Display Panel will illu-
minate.
Operator Controls N5-13