Komatsu WA470-6 2006, Operation & Maintenance Manual

Page: 327 / 392

4.9 Service procedure
Maintenance Every 2000 hours service
WA470-6H – VEAM946100
4-77
4.9.11 Every 2000 hours service
Maintenance for every 50, 100, 250, 500 and 1000 hours service
should be carried out at the same time.
Change oil in hydraulic tank, replace hydraulic filter element
WARNING
!
The parts and oil are at high temperature 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.
!
Refill capacity: 173 liters
1. Remove mounting bolts (2) of cover (1) at the top of the tank,
then remove the cover.
2. Lower the bucket horizontally to the ground and apply the
parking brake, then stop the engine.
3. Remove oil filler cap (F).
4. Remove mounting bolts (4) of cover (3) under the machine,
then remove the cover.
5. Set a container to catch the oil under drain plug (5).
6. Remove drain plug (5).
7. Open drain valve (6) gradually and drain the oil.
8. After draining the oil, close drain valve (6), install and tighten
drain plug (5).
Tightening torque
Drain plug (5): 68.6 ± 9.8 Nm
Drain valve (6): 63.7 ± 14.7 Nm
GK047052
1
2
F
GK047053
3
4
5
6