Genie GTH-4013 SX Operator's Manual page 37

First Edition - Second Printing
and are designed in such a way the extension of the
bigger one (moving the intermediate boom section)
produces the same extension of the smaller one
(moving the inner boom section).
At the top of the inner section a load handling
attachment articulation is provided with a rotating
carriage, which can be easily interfaced with a
number of different attachments, and which is
activated by another specific cylinder.
The different attachments selected for this machine
can be easily replaced and are secured by a
mechanical pin (standard feature) or by a hydraulic
quick lock/unlock cylinder (optional).
The boom cylinders described before are driven
through a main valve which is mechanically
controlled through a main joystick lever located in
the operator's cabin.
The same valve also controls the front stabilizers,
hinged on the front area of the machine and actuated
by specific hydraulic cylinders hinged between the
chassis and the stabilizers legs, and the chassis
lateral leveling system, activated by another specific
cylinder hinged between the right side of the chassis
and the front axle.
The operator can activate the stabilizers and the
chassis leveling through mechanical levers located
behind the main joystick controlling the boom
functions.
Downstream of the main valve to additional hydraulic
manifolds are installed. The first one reduces the
speed of the boom down, boom telescope out,
attachment tilt down and the flow rate to one of the
two auxiliary lines when the longitudinal stability of
the machine is approaching. The second hydraulic
manifold changes over the telescope and the forks
tilt functions according to the condition of a electrical
switch installed on the top of the main joystick.
The other main controls available in the operator's
cabin are the steering wheel (to control the machine
steering function), the service brake pedal and the
parking brake mechanical lever.
The steering wheel is mechanically connected to
a steering unit which feeds the steering cylinders
installed on the front and rear axles in such a way
the steering angle is proportional to the steering
wheel turns.
Part No. 57.0009.0540
Description Of The Machine
GTH-4013 SX - GTH-4017 SX - GTH-4013 EX - GTH-4017 EX
The service brake pedal is linked to a brake pump
which is hydraulically powered and, according to the
stroke of the pedal, generates a hydraulic pressure
activating the service brakes disks package (wet
type) which is installed inside the front and rear axles
and works on the axle internal shafts.
The same brake disks package installed on the
rear axle is operated by the parking brake system
through an internal mechanism which is mechanically
actuated and hydraulically released. When the
parking brake is released, through the relevant
handle located in the operator's cabin immediately
on the left side of the operator's seat, a hydraulic
pressure is applied to the internal mechanism so
releasing the force on the brake disks. When the
parking brake is activated this pressure is removed
and the internal mechanism pushes on the brake
disks so developing the requested braking force.
Another hydraulic cylinder is installed on the back
left side of the chassis and is hinged between the
chassis and the rear axle.
The aim of this cylinder is to improve the lateral
stability of the machine by locking the rear axle when
the boom angle is higher than a specified value.
The operator's cabin is of full enclosed type and
provided with windshield and glasses to protect the
operator and to the maximum visibility.
The operator is seated on a cushioned and adjustable
seat and can operate the machine using the specific
controls which have been properly located inside
the cabin.
A dedicated dashboard is provided with all the
necessary controls and gauges necessary to
properly and safely operate the machine.
An automatic stability control system is provided
with a display located inside the cabin and showing
the stability status of the machine to the operator
and a strain sensor installed on the rear axle and
measuring the residual load on the axle.
The machine is also equipped with a complete set
of road lights allowing a safe circulation on public
roads in dark conditions.
A counterweight system is installed on the back area
of the chassis to improve the longitudinal stability of
the machine.
Operator's Manual
37
Courtesy of Crane.Market