Galeo PC600-7, Operation & Maintenance Manual

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MAINTENANCE PROCEDURE
MAINTENANCE
4-26
WARNING
Antifreeze is flammable, so keep it away from flame.
Antifreeze is toxic. When removing the drain plug, be careful not to get water containing antifreeze on
you. If it gets in your eyes, flush your eyes with large amount of fresh water and see a doctor at once.
Use city water for the cooling water.
If river water, well water or other such water supply must be used, contact your Komatsu distributor.
We recommend use of an antifreeze density gauge to control the mixing proportions.
q
Prepare a container to catch drained coolant:
Min 56 liters (14.8 US gal) capacity.
1. Stop the engine, then turn valve (1) of corrosion resistor (2) to
the CLOSE stopper position.
2. Turn cap (3) of the radiator water filler slowly.
3. Remove undercovers (4) and (6), then set a container to
catch the coolant under engine coolant drain valve (7) at the
bottom of the muffler and coolant drain valve (5) at the bottom
of the radiator.
4. Open drain valves (5) and (7) and drain the water.
5. After draining the antifreeze solution, close drain valves (5)
and (7), then fill with clean water. After the radiator is filled
with water, start and run the engine at low idling speed. After
the water temperature rises above 90
°
C (194
°
F), run the
engine for about 10 minutes.
6. Stop the engine and open drain valves (5) and (7) to drain the
water.
7. After draining the water, clean the radiator with detergent.
When carrying out the flushing operation, follow the instruc-
tions given with the flushing agent.
8. Close drain valves (5) and (7).
9. Replace the corrosion resistor, and turn valve (1) to the
OPEN stopper position.
For details of the method for replacing the corrosion resistor car-
tridge, see "REPLACE CORROSION RESISTOR CARTRIDGE
(4-65)".
10. Install undercovers (4) and (6).
11. Fill with antifreeze and tap water until the water overflows from the water filler. Determine the proportions of
antifreeze and water in accordance with the water and antifreeze mixture table.