Caterpillar - 3PC CONTROL VALVE

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Código: 20171227134803
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GLOBAL SERVICE LEARNING
SERV1862 June 2008
TECHNICAL PRESENTATION
3PC CONTROL VALVE
PROPORTIONAL PRIORITY, PRESSURE
COMPENSATED (PPPC) HYDRAULIC SYSTEM
OPERATION
Service Training Meeting Guide
(STMG)
TABLE OF CONTENTS
INTRODUCTION...................................................................5
THE PPPC HYDRAULIC SYSTEM......................................................6
Implement Pump.................................................................7
MAIN CONTROL VALVE GROUP.......................................................9
Control Valve Operation.......................................................12
CONTROL OF THE CONTROL SPOOL .................................................23
Pilot Control Valves..........................................................24
Solenoid Control Valves.......................................................27
REPRESENTATIVE APPLICATIONS...................................................29
930G Wheel Loader Hydraulic System............................................29
"H" Series Medium Wheel Loader Hydraulic System...............................31
963D Track-Type Loader Hydraulic System.......................................33
CONCLUSION....................................................................35
VISUAL LIST ..................................................................36
HYDRAULIC SCHEMATIC COLOR CODE................................................37
HANDOUTS......................................................................38