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4.5.2.5 Clean oil suction filter
Warning
With engine shut, parts and oil are at
high temperature which may lead to
serious burns. Wait until temperature
cools down before starting
maintenance operation.
There is pressure in hydraulic oil
tank. Release pressure first before
opening oil fill cap on top of
hydraulic oil tank.
1) To facilitate access, swing upper turret 90
o
,
then stop excavator at level ground.
2) Position excavator with arm cylinder
completely retracted and bucket cylinder
completely extended.
3) Lower bucket to the ground, run the engine
unloaded at low speed for 5 minutes. Stop the
engine, remove key and set pilot control lever
to LOCK position.
4) Clean up upper hydraulic oil tank to prevent
dirt getting into hydraulic system. Press lock
cap to release internal pressure.
5) Remove hydraulic oil tank cover 2.
6) Remove oil suction filter and suspension bar
unit 3. Rinse filter. To replace filter, fix new
filter on suspension bar, tighten bolt at torque:
14.5 to 19.5 Nm (1.5 to 2 kgf·m).
7) Install oil suction filter and suspension bar
unit 3, make sure filter is positioned on the
opening properly.
8) Install tank cover 1, make sure filter and
suspension bar are place in position. Tighten
bolt at torque: 49 Nm (5kgfm).
9) Start engine; run it unloaded at low speed for
roughly 15 minutes to bleed air in main pump
and hydraulic system.
10) Shut down engine.
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