Lukas Hydraulic cylinder - Manual (Page 13)

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6.1 Hydraulic connections
On the side of the hydraulic cylinders are male Quick-disconnect connectors or female
screwed couplings; these are connected to the hydraulic source or control valve with
extension hoses or pipework.
Use LUKAS pairs of extension hoses which are generally colour-coded and fitted with
couplings so that they can be connected non-interchangeably.
6. Connecting the equipment
WARNING / CAUTION!
Prior to connecting the devices, ensure that all the components
being used are suitable for the maximum operating pressure
of the pump unit. In case of doubt you must consult LUKAS
directly.
The cylinder is connected to the hydraulic pump via screwed coupling halves (male and
female).
6.2 Coupling the screwed couplings
WARNING / CAUTION!
Coupling of the devices is only possible when the hoses are depressurised!
CAUTION!
Make sure that the connection on the cylinder base side is always connected
to the connection provided on the control valve for extending the cylinder,
and that the connection on the cylinder head (cylinder piston rod side) is
connected to the connection for retracting the cylinder.
Remove the dust caps before coupling, then plug the male connector on the hose into
the female connector on the side of the cylinder. Finally screw the threaded sleeve on the
female connector onto the external thread on the male connector and tighten hand-tight.
The connection is now made.
Uncoupling is carried out in the reverse sequence. For dust protection, the supplied dust caps
must be reattached.