5-34
MAINTENANCE
REPLACING THE PILOT LINE FILTER
• Stop the engine and allow each part of
the machine to cool down before
performing maintenance.
· The engine, 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 not to touch the oil when
loosening the cap or plug. Working on
the machine under these conditions
could result in burns or injuries due to
the hot oil spurting out.
• Oil may spurt out if caps or filters are
removed or pipes are disconnected
before releasing the pressure in the
hydraulic system.
· Gradually loosen the vent plug to
relieve tank pressure.
· 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.
AFTER THE INITIAL 250 HOURS (ONLY FOR NEW MACHINES)
1. Open the side cover.
2. Slowly turn the vent plug (2) to relieve tank
pressure, then remove.
3. Open the engine hood.
4. Turn the case (4) counterclockwise and
remove it.
5. Remove the element (5) and O-ring (6).
6. Clean the inside of the case (4).
7. Apply a thin layer of oil on the O-ring of the
new filter.
8. Install the new element on the filter stand
(7).
9. Apply a thin layer of oil on the new O-ring
(6).
10. Install the new O-ring (6) and the case (4)
on the filter stand (7).
· Case (4) tightening torque: 25 to 35 N·m
(18.4 to 25.8 ft-lb)
11. Inspect the level with the sight gauge (1)
and replenish if the level is too low.
Refer to “Inspecting the hydraulic oil tank
level and replenishing” on page 5-21.
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