Komatsu HB215LC-3, Operation & Maintenance Manual, Page: 369 / 492

17. Open the door at the rear left of the machine, drain the
coolant from the reservoir tank (5), clean the inside of the
reservoir tank, then fill with coolant up to the middle be-
tween FULL and LOW marks.
NOTICE
If it is extremely dirty and it is difficult to clean, replace
it with a new one.
18. After draining the coolant, clean the sub-tank with deter-
gent liquid.
For the cleaning method, follow the instruction for the de-
tergent liquid to use.
19. Close the drain valve (4).
20. Install the undercover (3).
21. Fill with the Non-Amine Engine Coolant through the water
filler port up to the mouth of the port.
For the concentration of Non-Amine Engine Coolant, see
“Coolant density table”.
22. Run the engine at low idle for 5 minutes to remove the air
from the coolant, then run it at high idle for further 5 mi-
nutes.
At this time, keep the radiator cap (2) removed.
23. Stop the engine, wait for 3 minutes, add coolant up to the
mouth of the filler port, and tighten the radiator cap (2).
24. Check the coolant level in reservoir tank.
If the coolant level is between FULL and LOW marks, it is
proper.
If it is insufficient, fill with Non-Amine Engine Coolant to the
middle between FULL and LOW marks.
25. Close the engine hood (1).
MAINTENANCE MAINTENANCE PROCEDURE
4-25