Y- 4
Y- 4
Air Bleeding Procedure 2.4 Pilot circuit (hydraulic pilot control valve)
5 Winch (main and aux.)
[NOTICE]
Pull out the connector of the AML vent solenoid
Conditions Engine speed :Idling PTO : ON Oil temperature : 50℃ (122°F) or higher
valve. Move the winch lever fully to the hoist-up side. Keep the above conditions for 30 seconds or more for bleeding. Proceed on the same steps by moving the winch lever to the hoist-down side.
1 Swing With the swing brake ON, move the swing lever fully to the right-swing side. Keep the above conditions for 30 seconds or more for bleeding. Proceed on the same steps by moving the swing lever to the left-swing side. 2 Jib Mount the jib, and pull out the connector of the AML vent solenoid valve. Turn the boom telescoping/ jib tilt operation selector to “JIB TILT”. Move the boom telescoping/jib tilt lever fully to the jib lowering side. Keep the above conditions for 30 seconds or more for bleeding. Proceed on the same steps by moving the boom telescoping/jib tilt lever to the jib raising side. 3 Elevating Pull out the connector of the AML vent solenoid valve. Move the boom elevating lever fully to the boom lowering side. Keep the above conditions for 30 seconds or more for bleeding. Proceed on the same steps by moving the boom elevating lever to the boom raising side. 4 Telescoping Pull out the connector of the AML vent solenoid valve. Turn the boom telescoping/ jib tilt operation selector to “BOOM TELESCOPING”. Move the boom telescoping lever fully to the retraction side. Keep the above conditions for 30 seconds or more for bleeding. Proceed on the same steps by moving the boom telescoping/jib tilt lever to the boom extension side.
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WY05-3550E
