Starting Procedure - Komatsu PC3000-6 Operation & Maintenance Manual

OPERATION
3.9.1

STARTING PROCEDURE

1. Insert battery main switch keys and turn to operating position.
2. Insert key into the switch (1), illustration Z24000 and turn to
operating position. The warning buzzer (2) must give an
acoustic test signal. If the buzzer fails to function, corrective
action must be taken.
3. Observe ETM display (3). Normally the basic display appears
on screen (3). If a FAULT message or INFORMATION item is
displayed, proceed according to section "ELECTRONIC
TEXT MONITORING SYSTEM ETM" on page 86.
4. Set toggle switch (4) to low idle speed position.
5. Sound the signal horn (5).
6. Start the engine by turning starter switch (6).
REMARK
The engine is equipped with a prelubrication system which is
activated by the starter switch (6). Turning and holding the switch
in the start position sends current to the prelubrication starter
solenoid which then pre lubricates the engine. This solenoid timer
prevents current from flowing to the conventional starting motor
until 17 kPa (2.5 psi) oil pressure has been achieved in the cam
oil rifle. After a subsequent 3 second delay, current is then
directed to the starting motors for cranking the engine.
7. Cold Weather Starting
To facilitate starting at low outside temperatures (below 0° C)
and with the engine cold, use the cold starting aid. Take into
account, that the prelubrication period will be longer at low
ambient temperatures. Inject starting fluid only after the prelu-
brication period is finished and the engine starts to crank.
Engage the starter and while cranking, apply metered
amounts of starting fluid using switch (7) until the engine idles
smoothly.
Use the cold starting aid only during starting and with the
engine cold.
REMARK
Never operate the starter longer than 30 seconds at a time in
order to avoid damage. If the engine does not start within the first
30 seconds, wait 2 minutes before cranking again.
8. As soon as the engine is running, check display (3) for mes-
sages.
CAUTION
3.9 STARTING THE ENGINE
145