New Holland CX720 Repair Manual page 31

DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
PRIMARY HYDRAULIC POWER SYSTEM - Component localisation
(A.10.A - C.40.B.20)
NOTE: The reference numbers used in the illustrations and text relate to the identification numbers used on the High
Pressure Circuit Diagram, PRIMARY HYDRAULIC POWER SYSTEM - Hydraulic schema (A.10.A-C.20.B.20).
(3) Hydrostatic Pump
Although not part of the high pressure system, the return oil from the hydrostatic motors is used as charge pressure
oil for the high pressure CCLS pump.
(4) Closed Centre Load Sensing (CCLS) Pump
Provides the oil for the high pressure system. Will supply the pressure as demanded by the services in use due to its
load sensing and variable displacement capability. Has the advantage over a fixed pump in that it reduces the engine
power absorbed when maximum pump flow is not required.
(5) Low Pressure Gear Pump
Totally separate from the high pressure system. Mounted on the CCLS pump from where it takes its drive.
(6) Load Sensing Valve (mounted on CCLS pump)
(7) High Pressure Relief Valve (mounted on CCLS pump)
Output from the CCLS pump is determined by adjusting the angle of the swash plate. The load sensing valve senses
the circuit operating pressure and adjusts the swash plate angle to control pump output. If pump output rises to 197
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