Komatsu PW98MR-10 Operation & Maintenance Manual page 325

MAINTENANCE
17. Turn the fuel control dial to a point of 2/3 between Low idle
(MIN) position and High idle (MAX) position.
18. Operate the work equipment control levers according to
the following procedure.
NOTICE
When the work equipment is operated, take care that it
does not interfere with the machine or ground.
1)
Move R.H. work equipment control lever slowly in the
direction of bucket CURL position (D). Operate the
lever to the end of its stroke and hold it in the position
for 30 seconds.
2)
Move R.H. work equipment control lever slowly in the
direction bucket DUMP position (C). Operate the lever to the end of its stroke and hold it in the position
for 30 seconds.
3)
Next, move L.H. work equipment control lever slowly in the direction arm IN position (B). Operate the
lever to the end of its stroke and hold it in the position for 30 seconds.
4)
Move L.H. work equipment control lever slowly in the direction arm OUT position (A). Operate the lever
to the end of its stroke and hold it in the position for 30 seconds.
Repeating the operations from step 1 to 4 moves the
pointer of the engine coolant temperature caution
lamp (4) upward. The pointer of the engine coolant
temperature caution lamp moves down temporarily
around the center of gauge (A). Then, continue the
operation for approximately 10 minutes.
19. Stop the engine.
20. Open drain valve (8).
21. Remove drain plug (9) and drain the coolant.
22. After draining the coolant, close drain valve (8).
23. Wind a sealing tape onto drain plug (9) and tighten the plug.
24. Install covers (3), (5), and (6).
25. Add coolant through the water filler port up to the mouth of the port.
For details of the coolant density, see "coolant density table".
26. Run the engine at low idle for 5 minutes to remove the air from the coolant, then run at high idle for a further
5 minutes.
Keep radiator cap (7) removed during the above operations.
WENAM00061
MAINTENANCE PROCEDURE
RKA48690
RKA48811
4-21