Komatsu 830E, Shop Manual

Page: 37 / 783

A03020 General Safety and Operating Instructions A3-23
4. The keyswitch is a three position (Off, Run,
Start) switch. When switch is rotated one posi-
tion clockwise, it is in the "Run" position and all
electrical circuits (except "Start") are activated.
a. Turn keyswitch to "Run" (not "Start") posi-
tion.
b. With Selector Switch in "Neutral", rotate key-
switch fully clockwise to "Start" position, and
HOLD this position until engine starts (see
NOTE below). "Start" position is spring-
loaded to return to "Run" when key is
released.
NOTE: I f the truck is equipped with a Komatsu
engine, a time delay will occur before starter
engagement and engine cranking begins. The
Komatsu engine is equipped with a Prelub™ System
that circulates engine oil throughout the engine prior
to start-up. The colder the engine oil, the longer the
delay before cranking begins. In addition, if the
engine is equipped with the Engine Starting Aid for
cold weather starting, the Engine Prelub™ System
should be engaged FIRST for 5 to 10 seconds, or
until the starters are engaged, BEFORE activating
the Engine Starting Aid.
Starting fluid is extremely volatile and flammable!
Use with extreme care.
If truck is equipped with optional Engine Starting Aid
and ambient temperature is below 50°F (10°C), turn
the keyswitch to the “Start” position, and while crank-
ing engine, move the Engine Starting Aid switch to
the “On” position for three (3) seconds MAXIMUM ;
then release Engine Starting Aid. If engine does not
start, wait at least fifteen (15) seconds before repeat-
ing the procedure.
• Do not crank an electric starter for more than
30 seconds.
• Allow two minutes for cooling before
attempting to start engine again. Severe
damage to starter motor can result from
overheating.
AFTER ENGINE HAS STARTED
1. After engine has started, do not accelerate
engine speed or drive truck until low pressure
and warning systems are normal, and the cool-
ant temperature is at least 160 F (71C).
2. Become thoroughly familiar with steering and
emergency controls. Test the truck steering in
extreme right and left directions. If the steering
system is not operating properly, shut engine
down immediately. Determine the steering sys-
tem problem and have repairs made before
resuming operation.
3. Operate each of the truck's brake circuits at
least twice prior to operating and moving the
truck. These circuits include individual activa-
tion from the operator's cab of the service
brake, parking brake, and brake lock. With the
engine running and with the hydraulic circuit
fully charged, activate each circuit individually. If
any application or release of any brake circuit
appears sluggish or improper, or if warning
alarms are activated on application or release,
shut the engine down and notify maintenance
personnel. Do not operate truck until brake cir-
cuit in question is fully operational.
4. Check gauges, warning lights and instruments
before moving the truck to insure proper system
operation and proper instrument functioning.
Give special attention to braking and steering
circuit hydraulic warning lights. If warning lights
come on, shut down the engine immediately
and determine the cause.
5. Insure headlights, worklights and taillights are in
proper working order. Good visibility may pre-
vent an accident. Check operation of windshield
wiper.
6. When truck body is in dump position, do not
allow anyone beneath it unless body-up retain-
ing pin or cable is in place.
7. Do not use the fire extinguisher for any purpose
other than putting out a fire! If extinguisher is
discharged, report the occurrence so the used
unit can be refilled or replaced.
8. Do not allow unauthorized personnel to ride in
the truck. Do not allow anyone to ride on the
ladder of the truck.
9. Do not leave truck unattended while engine is
running. Apply park brake and shut down
engine before getting out of cab.