RENR7064-00 March 2005
FLUID POWER SYMBOLS BASIC COMPONENT SYMBOLS MAIN AUX.
PUMP or MOTOR
TWO POSITION
TWO-WAY
THREE POSITION
365C: ELC 1-UP MEM1-UP FEN1-UP PAR1-UP MCS1-UP MCY1-UP WAW1-UP
FOUR-WAY
THREE-WAY
CHECK VALVES
AB
P T SHIFTED POSITION
P T NORMAL POSITION
365C Excavators Hydraulic System (Attachment) Fine Filtration
LINE RESTRICTION (VARIABLE and PRESSURE COMPENSATED)
VALVE PORTS
CONTROL VALVES AB
Schematic
PUMP: VARIABLE and PRESSURE COMPENSATED
2-SECTION PUMP
HYDRAULIC PNEUMATIC ENERGY TRIANGLES
VALVES
VALVE ENVELOPES
ONE POSITION
LINE RESTRICTION (FIXED)
RESTRICTION
PRESSURE COMPENSATION
LINE RESTRICTION (VARIABLE)
SPRING (ADJUSTABLE)
VARIABILITY
CONTROL VALVES
SPRING
FLUID CONDITIONER
INFINITE POSITION
MEASUREMENT
PRESSURE
SPRING LOADED
BASIC SYMBOL
ROTATING SHAFTS
FLOW
TEMPERATURE
UNIDIRECTIONAL
BIDIRECTIONAL
FLUID STORAGE RESERVOIRS
VENTED
RETURN ABOVE FLUID LEVEL
PRESSURIZED
RETURN BELOW FLUID LEVEL
COMBINATION CONTROLS
SOLENOID or MANUAL
SOLENOID
SERVO
SOLENOID and PILOT or MANUAL
SOLENOID and PILOT
DETENT
THERMAL
MANUAL CONTROL SYMBOLS
PUSH-PULL LEVER
PEDAL
PUSH BUTTON
GENERAL MANUAL
SPRING
PILOT CONTROL SYMBOLS RELEASED PRESSURE
EXTERNAL RETURN
INTERNAL RETURN
ACCUMULATORS
SPRING LOADED
GAS CHARGED
HYDRAULIC PUMPS FIXED DISPLACEMENT
REMOTE SUPPLY PRESSURE
VARIABLE DISPLACEMENT NON-COMPENSATED
SIMPLIFIED
CROSSING AND JOINING LINES
LINES CROSSING
LINES JOINING
HYDRAULIC MOTORS FIXED DISPLACEMENT
VARIABLE DISPLACEMENT NON-COMPENSATED
UNIDIRECTIONAL
UNIDIRECTIONAL
BIDIRECTIONAL
BIDIRECTIONAL
© 2005 Caterpillar All Rights Reserved
INTERNAL SUPPLY PRESSURE
COMPLETE
HYDRAULIC AND PNEUMATIC CYLINDERS
SINGLE ACTING
DOUBLE ACTING
INTERNAL PASSAGEWAYS INFINITE POSITIONING
FLOW IN ONE DIRECTION
TWO POSITION
THREE POSITION
PARALLEL FLOW
CROSS FLOW
FLOW ALLOWED IN EITHER DIRECTION
Printed in U.S.A.