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MAINTENANCE
5.
Remove the undercovers (1), (2), and (3).
6.
Place an oil container to catch oil under the drain plug at
the bottom of the machine.
When removing the drain plugs (P) and (A), be careful not
to get oil on yourself.
By removing the plug (P) from the tank bottom first and
then plug (A) from the suction tube, the oil can be drained
almost equally from 2 places.
7.
Remove the drain plug (P) from the tank bottom to drain
the oil.
Check the installed O-ring for damage. Replace the O-ring with a new one if necessary.
8.
Remove the drain plug (P) from the suction tube to drain the oil.
Check the installed O-ring for damage. Replace the O-ring with a new one if necessary.
9.
After draining the oil, tighten the drain plugs (A) and (P).
Tightening torque: 58.8 to 78.5 Nm{6.0 to 8.0 kgm}
10. Add the refill capacity of oil through the oil filler port (F).
11. Check that the oil level is between H and L lines on sight gauge (G).
For applicable oils, see "USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEM-
PERATURE (7-6)".
For the check of oil level and the installation procedure of the oil filler cap, see "METHOD FOR CHECKING
OIL LEVEL IN HYDRAULIC TANK, ADDING OIL (3-152)".
12. Bleed air from the hydraulic circuit.
For the air bleeding procedure of hydraulic circuit, see "METHOD FOR BLEEDING AIR FROM HYDRAUL-
IC CIRCUIT (4-42)".
13. Install the undercovers (1), (2), and (3).
EVERY 8000 HOURS MAINTENANCE
Maintenance for every 50, 250, 500, 1000, 2000 and 4000 hours service should be performed at the same time.
METHOD FOR REPLACING FUEL SPRAY PREVENTION CAP
Ask your Komatsu distributor for replacement of the fuel spray prevention caps.
EVERY 9000 HOURS MAINTENANCE
Maintenance for every 50, 250, 500, 1000 and 4500 hours service should be performed at the same time.
METHOD FOR REPLACING DEF HOSE
Ask your Komatsu distributor for replacement of the DEF hose.
END OF SERVICE LIFE
•
For safe dismantling of the machine at the end of service life, please contact your Komatsu distributor.
MAINTENANCE PROCEDURE
4-87
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