AVANT A21029, Instruction Manual

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5.2. Connecting and disconnecting the hydraulic couplings
The attachment is equipped with either standard quick couplings or the multiconnector system. If you want to
change the type of the hydraulic couplings for the 300-700 series loaders, contact your Avant dealer or service
point for instructions or installation services. The log cutter/splitter A21262 for 200-series loaders is always
equipped with standard hydraulic quick couplings.
Never connect or disconnect quick couplings or other hydraulic components while the
system is under pressure or if the control lever of the auxiliary hydraulics control lever
is locked on. Connecting or disconnecting the hydraulic couplings while the system is
pressurized may lead ejection of high-pressure fluid, which can cause serious injuries.
Keep the fittings as clean as possible; use the protective caps for the quick couplings on both the attachment
and the loader. Dirt, ice, etc. may make using the fittings significantly more difficult. Never leave the hoses
hanging on the ground; place them on top of the equipment.
Connecting standard quick couplings:
Before connecting or disconnecting the standard quick couplings, shut down the loader engine and move the
auxiliary hydraulics lever on the loader to its extreme positions a few times and also move the control levers of
the attachment. This way, there will be no residual pressure in the system and it is easier to connect the
fittings.
To connect and disconnect the fittings, move the collar at the end of the
female fitting. The hoses should be connected so that the male fitting of
the attachment is connected on the loader to the fitting with coloured cap.
The second hose is connected on the single male fitting of the loader.
Note that the protective caps on the loader and the attachment can be
fastened to each other during operation to reduce the accumulation of
dirt.
In a 200-series machine, the hoses can be connected by pushing the fitting in the counterpart. When
connecting and disconnecting the 200-series hydraulics quick couplings, you should pay attention to their
locking. The locking prevents the female and male fittings from being disconnected from each other by
accident when the attachment moves. The fitting collar may also turn by accident into the locking position,
making it impossible to connect or disconnect the fittings.
In the 200-series equipment, there is a small groove in the collar of all female
fittings and a small ball below the collar. When the fittings need to be
disconnected, the above-mentioned groove and ball need to be aligned.
Then, the grooved collar of the female fitting is pulled downwards to
disconnect the fittings from each other.
Connecting the multiconnector system:
Align the pins of the attachment connector with corresponding holes of
the loader connector. The multiconnector will not connect if the
attachment connector is upside down.
Connect and lock the multiconnector by turning the lever towards the
loader. The lever should move easily all the way to its locking position. If
the lever does not slide smoothly, check the aligment and position of the
connector and clean the connectors. Shut down the loader and release
the residual hydraulic pressure.