Hitachi ZW 370-6 Operator's Manual page 371

17. Start the engine. Press power mode selector switch (9)
to activate the power mode.
18. Select "Information Menu" - "Monitoring" menu to
display the coolant temperature on the monitor. (Refer
to p. 1-80 Monitoring.)
19. Wait until the engine temperature reach the normal
operation range.
20. Then, run the engine at higher speed until the coolant
temperature reaches 80°C (176°F).
To quickly increase the coolant temperature, turn the
declutch switch to OFF, fully depress the brake pedal, set
the shift lever to the second speed range, the parking
brake SW to OFF, and operate the bucket lever.
f
NOTE: This operation shows the main menu display on the
monitor panel. Display the coolant temperature monitoring
screen according to the above step 18.
21. After the coolant temperature reaches 80°C (176°F),
keep running the engine at high idle for at least 6
minutes. (This opens the engine thermostat and
releases the air between the radiator and the engine.)
Keep the coolant temperature at 80°C (176°F) or higher
during this high idle operation.
IMPORTANT: Failure to keep the engine at high idle and
the coolant temperature at 80°C (176°F) or above for
at least 6 minutes may result in air remaining in the
EGR coolers and EGR cooler damage.
22. While running the engine at high idle, turn the heater
ON. This is to bleed the air of the heater circuit. (You may
turn OFF the heater after running for 1 minute.)
23. Run the engine at low idle speed for about 5 minutes
and stop the engine. Wait until the engine is fully
cooled.
24. Check the coolant level in the sub tank and add coolant
to "FULL" level (5).
If the sub tank is empty, the engine cooling system may
have some problem. Check the engine and cooling
system. Consult your nearest authorized dealer for
assistance.
MAINTENANCE
7-77
8
MNEC-01-041
8
MNEC-01-016
5
97Z7-7-89-6