Komatsu PW130ES-6K Operation & Maintenance Manual page 195

SERVICE PROCEDURE
5. Add coolant to the reserve tank until the level is between
FULL and LOW marking on the tank.
6. When coolant level remains fixed between the FULL and
LOW on the reserve tank, install the reserve tank cap.
7. Run the engine
8. Stop the engine
9. Check for leaks and coolant level in the reserve tank.
CLEANING THE RADIATOR
Minor internal sludge accumulations will be removed when flush-
ing the cooling system.
When internal accumulations are found that cannot be removed
by normal flushing methods, consult your distributor.
Remove all bugs and dirt from the radiator core, using air or water
under pressure. Direct the flow through the core, opposite to the
normal direction of air flow.
CLEANING THE RADIATOR PRE-SCREEN
1. Remove the bolts retaining the radiator pre-screen and
remove the pre-screen.
2. Clean the pre-screen with water under pressure.
3. Reinstall the pre-screen and retaining bolts.
THERMOSTATS
REMOVAL
1. Drain the cooling system. Refer to "DRAINING THE SYS-
TEM" on page 192 in this section.
2. Remove the components and housing to access the thermo-
stats.
3. Remove the thermostats and clean all gasket material from
either mating surfaces.
INSTALLATION
1. Install two new thermostats with new gasket.
2. Re-install thermostat housing and all component parts.
3. Fill the cooling system. Refer to "COOLING THE SYSTEM" in
this section.
194
MAINTENANCE.