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

OM3043 06/06
Operating Instructions
32. Clean the cab windows and mirrors.
Remove dirt or debris from the cab floor.
Ensure the steering wheel, controls, and pedals
are free of any oil, grease, or mud.
33. Store any personal gear in the cab so it does
not interfere with the operation of the truck. DO
NOT carry tools or supplies in the cab of the
truck or on the deck.
34. Adjust the seat and steering wheel so that it is
comfortable for use.
35. Read and understand the Operator Controls and
Instrument Panel discussion in this section. Be
familiar with all the control locations and functions
before operating the truck.

ENGINE START-UP

1. Ensure all personnel are clear of the truck
before starting the engine. Sound the horn as a
warning before actuating any operational con-
trols. If the truck is in an enclosure, ensure ade-
quate ventilation before start-up. Exhaust fumes
are dangerous!
2. Ensure the parking brake switch is in the ON
position. The selector switch must be in NEU-
TRAL before starting the truck.
3. If the truck is equipped with auxiliary cold
weather heaters, DO NOT start the engine
while the heaters are on. Damage to the coolant
heaters will result.
4. The key switch is a three position (OFF, RUN,
START) switch. When the switch is rotated one
position clockwise, it is in the RUN position and all
electrical circuits (except START) are activated.
With the selector switch in NEUTRAL, rotate the
key switch fully clockwise to the START position
and hold this position until the engine starts. The
START position is spring loaded to return to RUN
when the key is released.
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 at one time. Allow two minutes for cooling
before attempting to start the engine again. Severe
damage to the starter motor can result from over-
heating.

AFTER ENGINE HAS STARTED

1. Become thoroughly familiar with the steering
and emergency controls. After the engine has
started and the low pressure and warning sys-
tems are normal, test the truck steering in
extreme right and left directions. If the steering
system is not operating properly, shut the
engine off immediately. Determine 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.
Operation - Section 30
Page 30-5