1.
Remove the rubber boot of the control
lever, referring to "LUBRICATING PUSH
ROD OF CONTROL LEVER" in Chapter 4.
2.
To remove cover (5) of the left side lever,
loosen two bolts (8) and remove cover (5).
To remove cover (6) of the right side lever,
loosen two bolts (9) to remove cover (7),
and then loosen three bolts (8) to remove
cover (6).
4.18.3
CLEANING PILOT LINE FILTER
Internal pressure always exists in the hydraulic circuit. Do not inspect or maintain the machine before
releasing the internal pressure.
To release the internal pressure of the hydraulic oil tank, press the valve on top of the breather cap
to release the pressure in the hydraulic oil tank.
Wipe off spilled hydraulic oil to prevent a fire.
On each "P port" of the pilot valves for left and right hand operator control levers, the pilot valve for
travel, and the solenoid valve, the filtered connector is attached. If dust is adhered to these filters, the
flow of hydraulic oil will be interrupted. If dust enters into the valves, it may cause failure. Remove
them periodically to clean them.
When cleaning the pilot line filters, place the machine in the parking position, set the pilot control
shut-off lever to the "LOCKED" position, and stop the engine. Then bleed the air of the hydraulic
circuit, referring to "RELEASING INTERNAL PRESSURE IN HYDRAULIC OIL AND HYDRAULIC
SYSTEM" in Chapter 4.
PILOT VALVES FOR CONTROL LEVERS
Left Side Lever
[
4. INSPECTION AND MAINTENANCE
]
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