7.
Pull out the drain hose (4).
8.
Remove the cover (5) under the front cover.
9.
Place a container to catch the coolant under the drain
hose (4).
10.
Open the drain valve (P) to drain the coolant.
REMARK
Keep
air bleeding valve (6) open while adding the coolant
or water to the cooling system. The air which is collected
during adding of the coolant or water will be bled. After
adding the coolant or water, close the air bleeding valve
(6).
11.
After draining the coolant, close the drain valve (P) and
add city water.
12.
After the radiator is filled with water, start the engine.
13.
Run the engine at low idle for approximately 10 minutes.
14.
Stop the engine.
15.
Open the drain valve (P) to drain the coolant.
16.
Close the drain valve (P).
17.
Add the Non-Amine Engine Coolant (AF-NAC) through the coolant filler port up to the mouth of the port.
For the concentration of Non-Amine Engine Coolant (AF-NAC), see “Coolant density table”.
18.
Start the engine.
19.
Run the engine at low idle for 5 minutes, and then run at full speed for further 5 minutes. (At this time, keep
the radiator cap removed.)
The air is bled from the coolant.
20.
Open the hydraulic tank inspection cover on the left side of
the machine, and drain the coolant from the reservoir tank
(7).
21.
Clean the inside of reservoir tank (7).
MAINTENANCE PROCEDURE MAINTENANCE
4-22
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