GENERAL INTRODUCTION
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CX EXCAVATORS
EXPLANATION OF CX SERIES
Hydraulic System Overview
All models use a triple hydraulic pump assembly that is located on the same side of the unit
as the reservoir. All of the units use two variable displacement piston pumps for the machine
functions. A fixed displacement gear pump used to supply pilot control oil for the system. The
CX130 and CX160 units use a tandem mounted pump supplied by Uchida. The CX210 and
CX240 units use a tandem mounted pump supplied by Kawasaki. All of the pumps have a
system to limit the horsepower load on the engine. This system allows the unit to fully utilize
the power available without overloading the engine. The CX Series Excavators have an
electrically controlled feature that allows the hydraulic system to operate at less than full load
to increase fuel economy or fine touch controllability.
This feature allows for four digging modes:
“Auto” -Variable- 90-85% engine speed- 93-90% hydraulic pump torque
"H" -Heavy Duty - 100% of engine speed - 100% hydraulic pump torque
"S" -Standard Duty - 95% of engine speed - 90% hydraulic pump torque
"L" -Light - 85% of engine speed - 70% hydraulic pump torque
The machine will be in the ”Auto” mode each time it is started.
All models have Power Boost
CX130/CX160 machines have One-Touch Power Boost
CX210/CX240 machines have automatic Power Boost.
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