Milton CAT 24M - Manual (Page 9)

Advanced Electro-Hydraulic System.
The 24M incorporates a state-of-the-art
electro-hydraulic system. This technology
is the foundation for revolutionary
changes of the machine and implement
controls. Advanced joystick controls
provide unmatched controllability
with precise and predictable hydraulic
movements, and the reliability you
expect from Caterpillar.
Load Sensing Hydraulics (PPPC).
The time proven load-sensing system
and the advanced Proportional Priority
Pressure-Compensating (PPPC, or
“triple-PC”) electro-hydraulic valves on
the 24M are designed to provide superior
implement control and enhanced
machine performance in all applications.
Continuous matching of hydraulic flow
and pressure to power demands creates
less heat and reduces power consumption.
Consistent and Predictable Movement.
PPPC valves have different flow rates
for the head and rod ends of the cylinder.
This ensures consistent extension and
retraction speeds for each cylinder,
and gives the operator a consistent
and predictable response every time
an implement control is moved.
Blade Float. Blade float is built into the
blade lift control valves. The blade float
feature allows the blade to move freely
under its own weight. By floating both
cylinders, the blade can follow the
contours of the haul roads. Floating only
one cylinder permits the toe of the blade
to follow a hard surface while the
operator controls the slope with
the other lift cylinder.
Variable Float. The optional variable
float feature lets the operator select the
amount of down force the blade has
when it is in float. This allows the
operator to easily follow the contour of
the haul road when removing only the
loose material, increasing productivity
and cutting edge life.
Balanced Flow. Hydraulic flow is
proportioned to ensure all implements
operate simultaneously with little effect
on the engine or implement speeds.
If demand exceeds pump capacity, all
cylinder velocities are reduced by the
same ratio. The result is improved
productivity in all applications.
Cat ® XT™ Hose. Caterpillar hose
technology allows high pressures for
maximum power and reduced downtime.
Intelligent routing minimizes exposure
to damage. Hose clips prevent hose
rubbing and excessive vibration for
lower owning and operating costs.
Independent Oil Supply. Large, separate
hydraulic oil supply prevents cross
contamination and provides proper oil
cooling, which reduces heat build-up
and extends component life.
9
Hydraulics
The 24M electro-hydraulics enable advanced machine controls with precise and
predictable movements.