Y-4
Y-4
Air Bleeding Procedure
28
WY05-4181E
5. Slewing control valve
(back-pressure valve)
[NOTICE]
Conditions
Engine speed : Max. (1900 min
-1
)
PTO
: ON
Slewing brake : ON
1. Open the air-bleed plug and rapidly move the
slewing lever repeatedly between left slewing and
right slewing.
2. When there are no more bubbles in the oil that
flows out, tighten the plug while the oil continues
to flow.
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 Slewing
With the slewing brake being actuated, move the
slewing lever fully to the right slewing side. Keep
the above conditions for 30 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 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 (CN100) of the AML vent
solenoid valve.
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 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 30 seconds or
more for bleeding. Proceed on the same steps by
moving the winch lever to the hoisting down side.
Содержание GR-300EX-3
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Страница 8: ...7 WA04 4880E 6 Group index System Diagrams Data Adjustment and Checks Y Z Y Z...
Страница 27: ...14 WY02 1792E Y 2 Y 2 Adjusting Pressure Hydraulic Pressure...
Страница 97: ...Z 6 Z 6 Hydraulic Parts Location Diagram Upper 26 WZ07 3762E 5 Return 6 Drain 3 343 458 62000 1 343 465 03000...
Страница 98: ...Z 6 Z 6 Hydraulic Parts Location Diagram Upper 27 WZ07 3762E 7 Gauge 3 343 450 35500...
Страница 99: ...Z 6 Z 6 Hydraulic Parts Location Diagram Upper 28 WZ07 3762E 8 Pilot 0 343 458 63000...
Страница 108: ...37 WZ08 0620E Z 9 Z 9 Pneumatic Parts Location Diagram 3 Control parts lower 1 349 233 11000 0 349 233 10000...