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 the left slewing operation
slowly for approximately one minute.
(3) With the slewing brake being actuated, perform
the right or the 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.
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.)
4.3 Other motor
With each hydraulic motor, before operating the
motor, pour the hydraulic oil from the drain port
until the oil flows out.
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