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4.5.2.6 Clean oil return filter.
Warning
With engine shut, parts and oil are
still at high temperature. Wait for
engine to cool down, before starting
operation.
There is pressure inside hydraulic
oil tank. Release pressure before
opening oil fill cap located on top of
hydraulic oil tank.
To facilitate access, swing upper turret 90
degree, then stop the machine at level ground.
Position excavator with arm cylinder fully
retracted and bucket cylinder fully extended.
Lower bucket to ground, run engine unloaded
at low speed for 5 minutes, then stop the engine,
remove key, set pilot control lever to LOCK
position.
Clean up upper hydraulic oil tank to prevent
dirt getting into hydraulic system, press down
lock cap to release internal pressure.
Loosen 6 bolts to release internal pressure, and
remove cap (1) at which moment, the cap might
be ejected under spring (2) force, therefore it’s
necessary to hold the cap down when removing
these bolts.
Pull out upper end of bar (3), remove spring (2)
and filter (4).
Remove dirt adhered on filter (4), rinse it with
fresh diesel oil or washing oil. If the filter (4) is
damaged, replace it with new one.
Reinstall filter (4), insert it to the bulge (5) in
oil tank.
When installing, the bulge under cap (1) must
secure spring (2), then use bolt to fasten it.
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