5-54
MAINTENANCE
EVERY 4000 HOURS
REPLACING THE HYDRAULIC OIL AND
CLEANING THE SUCTION STRAINER
Warning
•Stoptheengineandallowthemachine
to cool down before performing
maintenance.
· The engine and the hydraulic system
and many other parts of the machine
are hot immediately after the engine is
stopped. Touching these parts will
cause burns.
· The hydraulic oil is also hot and under
high pressure immediately after the
engine is stopped.
Be careful when loosening the caps or
plugs. Working on the machine under
these conditions could result in burns
or injuries due to the hot oil spurting
out.
•Oilmayspurtoutifcapsorltersare
removed or pipes are disconnected
before releasing the pressure in the
hydraulic system.
· Press the air breather button to relieve
the internal pressure from the tank.
· When removing plugs or screws, or
when disconnecting hoses, stand to
the side and loosen them slowly to
gradually release the internal pressure
before removing.
1. Slew 45° clockwise and set the machine
to the hydraulic oil level inspection
posture.
Refer to “Inspecting the hydraulic oil tank
level and replenishing” on page 5-20.
2. Open the side cover.
EVERY 4000 HOURS
3. Press the button (2) to relieve the internal
pressure from the tank.
4. Replace the air breather filter (A).
Refer to “Replacing the air breather filter”
on page 5-51.
5. Remove the plug (3).
6.Loosentheboltsandremovetheange
(4).
7. Remove the return filter (5).
8. Place a pan under the plug (6) to catch the
waste oil.
9. Remove the cap (B), install connector (C)
and drain the oil. (The oil comes out when
the screw is tightened.)