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OPERATION
3.20.1 OPERATING THE TRANSFER PUMP
Legend for illust. Z25100
REMARK
The illustration shows the transfer pump arrangement viewed
from center of the platform.
(1)
Transfer pump with electric motor
(2)
Cock for suction oil reservoir
(3)
Cock for return oil collector pipe
C - Closed
O - Open
(4)
Operating switch for transfer pump
(5)
Suction line to suction oil reservoir
(6)
Suction line to return oil collector pipe
(7)
Feed back line to main oil reservoir
(8)
Hand wheel of main shut-off valve between suction oil reservoir and main oil reservoir
To OPEN the valve turn hand wheel (8) CCW to the stop.
To CLOSE the valve turn hand wheel (8) CW to the stop.
A proximity switch located on the gearbox of the shut-off valve monitors the valve posi-
tion. With the valve not fully open a corresponding message will be displayed on the
ETM screen in the Operator's cab.
Before starting the engines make sure the shut-off valve is
completely open by turning hand wheel (8) fully to the left (CCW).
(9)
Oil level sight gauge
3.20.2 FUNCTIONS OF THE TRANSFER PUMP
A - Transfusing oil from the suction oil reservoir into the main
oil reservoir. Necessary for evacuation of the suction oil reser-
voir, when changing the hydraulic oil (the main oil reservoir
will be evacuated via service arm connector, see page 219 for
details). Before servicing the main hydraulic pumps it is advis-
able to empty the suction oil reservoir partially.
B - Transfusing oil from return oil collector pipe into main oil
reservoir. Necessary when changing the hydraulic oil and
prior to servicing the high pressure filters or the main control
valves (oil return system).
Before operating the transfer pump lower the attachment
onto the ground in a position as shown on the oil level plate.
Shut down the engine.
CAUTION
CAUTION
3.20 TRANSFER PUMP FOR HYDRAULIC OIL
229
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