Milton CAT M322D - Manual (Page 5)

Dedicated Swing Pump. A dedicated
variable displacement piston pump and
fixed displacement piston motor power
the swing mechanism. This closed
hydraulic circuit maximizes swing
performance without reducing power to
the other hydraulic functions, resulting
in smoother combined movements.
Heavy Lift Mode. This mode maximizes
lifting performance by boosting the
lifting capability of the excavator by
7 percent. Heavy loads can be easily
moved in the full working range of the
machine, maintaining excellent stability.
Adjustable Hydraulic Sensitivity.
This function allows the operator to
adjust the aggressiveness of the machine
according to the application. For precision
work, one of four different levels of
aggressiveness can be pre-selected.
Proportional Auxiliary Hydraulics.
Versatility of the hydraulic system can
be expanded to utilize a wide variety
of hydraulic work tools using multiple
valve options.
• The Multi-Combined Valve is the
core of the Tool Control System,
allowing the operator to select up to
ten pre-programmed work tools from
the monitor. These preset hydraulic
parameters support either one-way
or two-way flow. The joystick sliding
switches allow modulated control of
the work tool.
• A dedicated Hammer circuit is the
best option for tools that require
one-way flow only, and do not
require the flexibility provided
by the Multi-Combined Valve.
• The Medium Pressure Function Valve
provides proportional flow that is ideal
for tilting buckets or rotating tools.
• A new feature for the D-Series Wheel
Excavators is the optional second
High Pressure valve. In combination
with the Multi-Combined Valve, it
provides the possibility to operate
the machine with work tools or in
applications requiring a third auxiliary
hydraulic function, such as a tilting/
rotating quick coupler.
Stick Regeneration Circuit. The stick
regeneration circuit increases efficiency
and helps increase controllability for
higher productivity and lower
operating costs.
Quick Coupler. The machine can be
optionally equipped with a dedicated
hydraulic circuit to operate hydraulic
quick couplers.
Hydraulic Snubbers. Caterpillar integrates
its cylinder snubber technology into all
Wheel Excavator boom, stick and bucket
cylinders. These snubbers help cushion
shocks, reduce sound and increase
cylinder life.
Caterpillar XT™-6 ES Hoses. Premium
quality rubber, precision 4-ply wire
reinforcement and exclusive reusable
couplings are all unique features that
deliver top performance and long life.
5
Hydraulics
Fast cycle times, increased lift capacity, and high bucket and stick forces combine
to maximize your productivity in any job.