Y-4
Y-4
Air Bleeding Procedure
28
WY05-5140E
7. Pilot circuit
(hydraulic pilot control valve)
[NOTICE]
Conditions
Engine speed : idling (770 min
-1
)
PTO
: ON
Oil temperature : 50°C (122°F) or higher
1 Slewing
With the slewing brake being actuated, move the
slewing lever fully to the right slewing side. Keep
the above conditions for 20 seconds or more for
bleeding. Proceed on the same steps by moving
the slewing lever to the left slewing side.
2 Elevating
Pull out the connector (CN100) of the AML vent
solenoid valve.
Move the boom elevating lever fully to the boom
lowering side. Keep the above conditions for 20
seconds or more for bleeding. Proceed on the
same steps by moving the boom elevating lever to
the boom raising side.
3 Telescoping
Pull out the connector (CN100) of the AML vent
solenoid valve.
Move the boom telescoping lever fully to the
retraction side. Keep the above conditions for 20
seconds or more for bleeding. Proceed on the
same steps by moving the boom telescoping lever
to the boom extension side.
4 Winch (main and auxiliary)
Pull out the connector (CN100) of the AML vent
solenoid valve.
Move the winch lever fully to the hoisting up side.
Keep the above conditions for 20 seconds or
more for bleeding. Proceed on the same steps by
moving the winch lever to the hoisting down side.
Содержание GR-130EX
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