Every 5000 Hours Maintenance; Change Oil In Hydraulic Tank - Komatsu ecot3 Operation And Maintenance Manual

MAINTENANCE PROCEDURE

EVERY 5000 HOURS MAINTENANCE

Carry out the periodic maintenance work of every 100, 250, 500, and 1000 hours of operation at the same time.

CHANGE OIL IN HYDRAULIC TANK

The parts and oil are at high temperature immediately after the engine is stopped, and may cause burns. Wait for the
temperature to go down before starting the work.
When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it.
NOTICE
If the machine is equipped with a hydraulic breaker, the hydraulic oil will deteriorate much faster than during normal bucket
operations. For details, see "MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER (PAGE 4-19)" when carrying out
maintenance.
Refill capacity: 135 liters (35.67 US gal)
Prepare a handle (for the socket wrench).
1. Swing so that the drain plug at the bottom of the hydraulic tank
is in the middle between the left and right tracks.
2. Retract the arm and bucket cylinders, then lower the boom and
put the teeth in contact with the ground.
3. Set the lock lever to the LOCK position and stop the engine.
4. Remove the cap of oil filler port (F) at the top of the hydraulic
tank.
5. Set a container directly under the drain plug under the machine
to catch the oil that is drained. Remove drain plug (P) and drain
the oil. Check that the O-ring installed to plug (P) is not
damaged. If it is damaged, replace the O-ring. After draining
the oil, tighten drain plug (P).
The specified tightening torque is 68.6 ± 9.81 Nm (7 ± 1
kgm, 50.6 ± 7.2 lbft)
Take care not to get oil on yourself when you remove drain
plug (P).
6. Fill with the specified amount of oil through oil filler port (F). Check that the oil level is between the H and L lines
on the sight gauge.
For details of the suitable oil, see "RECOMMENDED FUEL, COOLANT, AND LUBRICANT (PAGE 4-10)".
For details of the method of checking the oil level, see "Check Oil Level in Hydraulic Tank, Add Oil (PAGE
3-118)".
7. Bleed the air from the hydraulic circuit.
For details of the method of bleeding the air from the hydraulic circuit, see "BLEEDING AIR FROM HYDRAULIC
SYSTEM (PAGE 4-46)".
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WARNING
MAINTENANCE