Milton CAT 320D LRR - Manual (Page 6)

Component Layout. To optimize efficiency
of hydraulic performance, the hydraulic
components are located close together,
which reduces friction loss and pressure
drops in the lines.
System Pressure. System pressure has
been increased to 35 000 kPa (5,076 psi),
which attributes to improved performance:
• Increased stick and bucket forces
(up 7% higher than the 320C LU)
to better handle those tight digging
conditions
• More drawbar pull (206 kN –
46,322 lb) to provide more ability
to climb slopes, easier spot turns
and improved travel in poor
underfoot conditions
• More lift capacity, generally over
the front where you are generally
hydraulically limited
Heavy Lift. The 320D LRR features the
addition of a heavy lift, which increases
system pressure to 36 000 kPa (5,220 psi),
giving even more lift capacity over
the front. Heavy Lift is activated by
depressing the soft switch on the right
hand console. As the pressure increases,
the engine speed is reduced, which allows
better control while lifting objects.
Pilot System. The pilot pump is
independent from the main pumps
and controls the front linkage,
swing and travel operations.
Hydraulic Cross Sensing System.
The hydraulic cross sensing system
utilizes each of two hydraulic pumps
to 100 percent of engine power, under
all operating conditions. This improves
productivity with faster implement speeds
and quicker, stronger pivot turns.
Boom and Stick Regeneration Circuit.
Boom and stick regeneration circuit saves
energy during boom-down and stick-in
operation which increases efficiency,
reduces cycle times and pressure loss
for higher productivity, lower operating
costs and increased fuel efficiency.
Auxiliary Hydraulic Valve. The auxiliary
valve is standard on the 320D LRR.
Control Circuits are available as
attachments, allowing for operation of
high and medium pressure tools such as
shears, grapples, hammers, pulverizers,
multi-processors and vibratory plate
compactors.
Hydraulic Cylinder Snubbers.
Snubbers are located at the rod-end of
the boom cylinders and both ends of the
stick cylinders to cushion shocks while
reducing sound levels and extending
component life.
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Hydraulics
Cat ® hydraulics deliver power and precise control to keep material moving.