Komatsu GALEO PC40MR-2 Operation & Maintenance Manual page 228

MAINTENANCE MAINTENANCE
5. Open dust cover (1) fully until it is secured in position.
(For details of the method of opening and closing the cover with
the lock, see Section "In Case of Engine Rear Cover and Dirt
Cover (PAGE 3-28)")
6. Loosen bolts (2), then remove plate (3) to the outside.
7. Remove the cap from oil filler (F), and release the internal
pressure.
8. Set the oil container under the drain plug under the machine.
Using the handle, remove drain plug (P) and drain the oil.
Check the O-ring installed to plug (P), and if it is damaged,
replace the O-ring. After draining the oil, tighten drain plug (P).
Tightening torque: 68.6 ± 9.81N·m (7 ± 1kgf·m, 50.6 ± 7.2 lbft)
Take care not to get oil on yourself when you remove drain plug (P).
9. Loosen hose clamp (4), remove hose (5), then remove bolt (6)
and take out strainer (7).
10. Remove any dirt stuck to strainer (7), then wash it in clean
diesel oil or flushing oil. If strainer (7) is damaged, replace it
with a new one.
11. Secure strainer (7) with bolt (6), then install hose (5) and
secure it in position with hose clamp (4).
12. Open the engine rear cover and cooling cover. For details, see
Section "COOLING COVER (PAGE 3-29)".
13. Add the replacement amount of oil through oil filler (F). Check
that the oil level is between the H and L lines on the sight
gauge.
14. Extend the boom, arm, and bucket cylinder fully as shown in
the diagram on the right, remove the oil filler cap, then install
the cap and pressurize the inside of the tank.
NOTICE
Be sure to pressurize the hydraulic tank. If it is not pressurized, the pump
will suck in air, and this will adversely affect the equipment.
15. After replacing the oil, set each control lever to the neutral
positionand run the engine idle at a low speed for 2 to 3
minutes, then start the normal work.
MAINTENANCE PROCEDURE MAINTENANCE PROCEDURE
4 - 59