Air Bleeding Procedure

5. Swing control back-pressure valve

[NOTICE]

Conditions

Engine speed : Max. (1900 min-1)

PTO : ON

Swing brake : ON

1. Open the air-bleed plug and rapidly move the swing lever repeatedly between left swing and right swing.

2. When there are no more bubbles in the oil that flows out, tighten the plug while the oil continues to flow.

2 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.

3 Telescoping

Pull out the connector of the AML vent solenoid valve.

Move the boom telescoping lever fully to the retraction side. Keep the above conditions for 30 seconds or m ore for bleeding. Proceed on the same steps by moving the boom telescoping lever to the boom extension side.

4 Winch (main and aux.)

Pull out the connector of the AML vent solenoid valve.

6. Pilot circuit (hydraulic pilot control valve)

[NOTICE]

Conditions

Engine speed : idling (700 min-1)

PTO : ON

Oil temperature : 50°C (122°F) or higher

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.

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.