After Engine Has Started - Komatsu 730E Operation & Maintenance Manual

Operation - Section 30
Page 30-6
NOTE: If the truck is equipped with an engine
prelube system, a noticeable time delay will occur
(while the engine lube oil passages are being filled)
before the starter engages. The colder the engine oil
temperature, the longer the time delay. In addition, if
the truck is equipped with an engine starting aid for
cold weather starting, the engine prelube system
must be engaged for 5-10 seconds, or until the
starter is engaged, before activating the engine
starting aid.
Starting fluid is extremely volatile and flammable!
Use with extreme care.
If the truck is equipped with the optional engine start-
ing aid and the ambient temperature is below 10°C
(50°F), turn the key switch to the START position.
While cranking the engine, move the engine starting
aid switch to the ON position for three seconds maxi-
mum, then release the engine starting aid. If the
engine does not start, wait at least fifteen seconds
before repeating the procedure.
DO NOT crank an electric starter for more than
thirty seconds. Allow two minutes for starter
cooling before attempting to start the engine
again. Severe damage to the starter motor can
result from overheating.
4. The key switch is a four-position switch (ACC,
OFF, RUN, START). The ACC position is not
currently used.
a. Turn the key switch one position clockwise to
the RUN (except START) position. All
electrical circuits (except start) are activated.
b. With the selector switch in NEUTRAL, turn the
key switch fully clockwise to the START
position and hold this position until the
engine starts. The START position is spring-
loaded and will return the switch to the RUN
position when the key is released.

AFTER ENGINE HAS STARTED

Do not leave the truck unattended while the
engine is running. Move the directional control
lever to PARK and turn off the engine before
leaving the truck.
Become thoroughly familiar with the steering and
emergency controls.
1. After the engine has started and the low pres-
sure and warning systems are normal, test the
truck steering in extreme right and left direc-
tions. If the steering system is not operating
properly, shut the engine off immediately. Deter-
mine the steering system problem and repair
before resuming operation.
2. Check the brakes before moving the truck. Start
the engine and allow the hydraulic system to
fully pressurize. Activate the service brake,
parking brake, and brake lock at least twice. If a
warning alarm is activated when a brake is
applied or released, DO NOT operate the truck.
If the application and release of any brake
appears slow or improper, DO NOT operate the
truck. If a brake problem is suspected, shut the
engine off and notify maintenance personnel.
3. Check the gauges, warning lights, and instru-
ments before moving the truck to ensure proper
system operation and proper instrument func-
tioning. Observe the braking and steering circuit
hydraulic warning lights. If the warning lights
come on, shut the engine off immediately and
determine the cause.
4. Make sure the headlights, work lights, and tail-
lights are in proper working order. Check the
operation of the windshield wipers. Good visibil-
ity may help prevent an accident.
5. When the truck body is in the dump position,
DO NOT allow anyone beneath it unless the
body-up retaining cable is in place.
6. DO NOT allow unauthorized personnel to ride
in the truck. DO NOT allow anyone to ride on
the stairs or ladder of the truck.
7. DO NOT leave the truck unattended while the
engine is on. Shut the engine off, and apply the
parking brake before getting out of the cab.
OM3070
Operating Instructions