Y-4
Y-4
Air Bleeding Procedure
27
WY05-4181E
4. Hydraulic motor assy
4.1 Slewing motor
[NOTICE]
Do not apply any load to the motor before
completing air bleeding.
Bleed the slewing motor by following either (1), (2) or
(3).
(1) Pour the hydraulic oil from the drain port until the
oil flows out.
(2) Perform the right or left slewing operation slowly
for approximately one minute.
(3) With the slewing brake being actuated, perform
the right or left slewing operation and keep the
slewing circuit hydraulic pressure at approximately
4.9 MPa {50 kgf/cm
2
} (710 psi) for approximately
30 seconds.
4.2 Winch motor
[NOTICE]
Do not apply any load to the motor before
completing air bleeding.
Bleed the winch motor by following either (1) or (2).
(Both main and auxiliary winch)
(1) Pour the hydraulic oil from the drain port until the
oil flows out. (After connecting all pipes, pour oil
just before starting the motor.)
(2) Perform the hoisting up or hoisting down
operation slowly (1st speed or lower) for one
minute or more.
4.3 Air conditioner motor
Before operating the air conditioner motor, pour
the hydraulic oil from the drain port until the oil
flows out.
Summary of Contents for GR-300EX-3
Page 1: ......
Page 8: ...7 WA04 4880E 6 Group index System Diagrams Data Adjustment and Checks Y Z Y Z...
Page 27: ...14 WY02 1792E Y 2 Y 2 Adjusting Pressure Hydraulic Pressure...
Page 98: ...Z 6 Z 6 Hydraulic Parts Location Diagram Upper 27 WZ07 3762E 7 Gauge 3 343 450 35500...
Page 99: ...Z 6 Z 6 Hydraulic Parts Location Diagram Upper 28 WZ07 3762E 8 Pilot 0 343 458 63000...
