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4.4. CONNECTING/SEPARATING THE LIFTING CYLINDERS
The lifting cylinders are connected to the LX LIFT via hose lines� The LUKAS
quick-disconnect coupling enables the connection to be made without any risk of
confusion�
4.4.1.
CONNECTING THE QUICK-DISCONNECT COUPLING
Remove the dust protection caps from both halves of the coupling� Turn the locking
sleeve so that the sleeve can be pushed (figure D)� Now push the sleeve back-
wards and connect the couplings together� Then release the sleeve� Afterwards,
the sleeve must be turned back into the locked position (figure E)� Now connect the
dust protection caps together� If it is not possible to connect the quick-disconnect
couplings, pressure will be exerted on the couplings in the LX LIFT� In this case,
please follow the procedure described in the Preparing for dismantling section�
4.4.2.
SEPARATING THE QUICK-DISCONNECT COUPLING
Pull the dust protection caps apart� Turn the locking sleeve so that the sleeve can be
pushed (figure D)� Now push the sleeve backwards and disconnect the couplings�
Then put the dust protection caps back on both halves of the coupling (figure F)�
4.5. OPERATING THE DEVICE
Before starting the power unit, check that the preselection lever for the power sup-
ply is set to 0� This allows the oil to circulate freely and means that the power unit
will start up easily� If the preselection lever is set to 0 (figure J), it is not possible to
move the cylinders with the valve�
4.5.1.
EXTENDING THE CYLINDERS
Turn the preselection lever from 0 to I (figure K); both lifting valves will now be sup-
plied with oil and the pump will be pressurized� By moving the lifting valves towards
the operator (figure L), the cylinders can be extended� After releasing the lever, it
automatically returns to the central position� Once the movement is complete, the
preselection lever returns to switching position 0 (figure J)�
4.5.2.
RETRACTING THE CYLINDERS
Turn the preselection lever from 0 to I (figure K); both lifting valves will now be sup-
plied with oil and the pump will be pressurized� By moving the lifting valves away
from the operator (figure M), the cylinders can be retracted� After releasing the le-
ver, it automatically returns to the central position� Once the movement is complete,
set the preselection lever to switching position 0 again�
4.6. PREPARING FOR DISMANTLING
Before disconnecting the hoses, the hydraulic system must be depressurized�
To do so, the cylinders must be retracted to within a few millimeters and then the
power unit must be switched off� Afterwards, the preselection lever must be set to I
again (figure K) and the lifting valve must be switched several times in both operat-
ing directions (figures L and M)� The system is now depressurized�
4.7. DISMANTLING
Start with the cylinders and disconnect them first� Then disconnect the hoses be-
tween the cylinders and the LX LIFT� Finally, separate the connection between the
LX LIFT and the drive unit�
Summary of Contents for 81-86-20
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