mecalac AS 50, Operating Instructions Manual

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S050/S051/Z050 4-5
Description 4
Swivel mechanism and axle support
Two single-acting swing cylinders are fed by a separate
gear-type pump via a control valve. The revolving seat
is connected with the cylinders by a chain drive. There
is no play at all. The swivel and the lifting movements
of the bucket arm can take place simultaneously and
independently.
The bucket assembly can be swung 90° to the left or right.
When the bucket assembly is swivelled, the axle support
is automatically switched on when the bucket arm setting
is ca. 30°. The support cylinder on the load side, acting on
the rear axle, is thus loaded with hydraulic pressure from
the load pressure via the support valve; it acts counter to
the swivelled load.
N O T E
The axle support is deactivated when the arm is swung
back.
Float position
The loader is equipped with a floating position function. To
use this, the hand lever (4-7/12) must be unlocked (1-2/
arrow) and must be pressed beyond its pressure point into
the forward poisition. In this position, the hand lever is
locked in and can be unlocked again by pressing it in the
opposite direction.
DANGER
The floating position function must only be switched on in
the lowermost bucket arm position.
N O T E
If the loader has a pipe break safety device, the floating
position function is deactivated.
Pipe break safety device
(option)
A pipe break safety valve is installed underneath each lift
and tip cylinder. In the event of a pipe or hose break in the
lift and/or tip system, the movements of the bucket arm and
the tipping rod are blocked until the damage is repaired.
ATTENTION
The lift cylinders’ pipe break protection is disabled when
the lifting suspension is switched on.