Engine Start-Up - Komatsu 730E Shop Manual

31. Check the coolant in the radiator using the coolant
level sight gauge, or observe the coolant level
through the opening in the end of the hood.
If it is necessary to remove the radiator cap, shut
the engine off, allow the engine to cool, and slowly
remove the radiator cap. DO NOT remove the
radiator cap when the cooling system is pressur-
ized.
If the engine is hot, allow the coolant to cool
before removing the fill cap or draining the radia-
tor. Serious burns may result if the coolant is not
allowed to cool.
32. Inspect the covers over the braking grids to
ensure the latches are securely fastened.
Inspect the main air inlet to ensure it is clear of
all foreign objects and debris that would prevent
complete air flow into the inlet.
Verify all the cabinet door latches are securely
fastened.
Move around the cab (1, Figure 3-3) to the back.
Open the doors to the brake cabinet and check
for any hydraulic oil leaks
If used, turn the work light off.
Close the door and verify the latches are
securely fastened.
33. 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.
34. 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.
35. Adjust the seat and steering wheel so that it is
comfortable for use.
36. 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.
A3-24

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 four-position switch (ACC,
OFF, RUN, START). The ACC position is not
currently used. When the switch is rotated one
position clockwise, it is in the RUN position and
all electrical circuits (except START) are acti-
vated. 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.
General Safety & Operation A03048