INTERACTIVE SCHEMATIC

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Electrical Symbols

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Tap Views

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Bookmarks X

EC-C3EC-C2 E-C60

EC-C1

E-C61

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Hydraulic System - Attachment316E Excavator

YZZ1-UP

Medium Pressure (Load Sensing)

©2014 Caterpillar, All Rights Reserved Printed in U.S.A.

KENR5860April 2014

COMPONENT LOCATION

Description PartNumber

MachineLocation

SchematicLocation

Accumulator Gp 164-6981 1 B-5Cylinder Gp - Boom 360-4557 2 F-4Cylinder Gp - Bucket 360-4563 3 F-3Cylinder Gp - Stick 360-4560 4 F-2Filter and Valve Gp - Pilot (Hydraulic Oil) 158-8987 5 B-3Filter Gp - Case Drain 289-8194 6 A-4Filter Gp - Return Oil 259-0869 7 A-4Manifold Gp - Control (Pilot Oil Supply) 215-5037 8 B-5Motor Gp - Left Travel 185-6953 9 F-8Motor Gp - Right Travel 185-6953 10 F-7Motor Gp - Swing 364-0978 11 F-5Pump Gp - Main Hydraulic 349-9085 12 A-3Screen Gp - Hydraulic 259-0920 13 A-4Sensor Gp - Pressure (Boom Cylinder Head End) 338-6971 14 F-4Sensor Gp - Pressure (Boom Down Control) 338-6970 15 A-7Sensor Gp - Pressure (Negative Flow Control 1) 338-6970 16 A-5Sensor Gp - Pressure (Negative Flow Control 2) 338-6970 17 A-4Sensor Gp - Pressure (Drive Pump) 338-6971 18 C-4Sensor Gp - Pressure (Idler Pump) 338-6971 19 C-4Sensor Gp - Pressure (Swing Control) 338-6970 20 A-5Switch As - Pressure (Implement) 319-4407 21 A-6Switch As - Travel Pressure 349-5406 22 E-5Swivel Gp 162-4696 23 E-8Tank and Filter Gp - Hydraulic 348-1230 24 A-4Valve Gp - Check (Cooler Bypass) 171-0002 25 C-2Valve Gp - Joystick (Left Hand) 323-7948 26 A-8Valve Gp - Joystick (Right Hand) 323-7947 27 A-7Valve Gp - Main Control 335-0495 28 D-4Valve Gp - Pilot (Travel) 310-0415 29 B-8Valve Gp - Pressure Reducing (Boom Priority) 352-7065 30 C-2Valve Gp - Pump Control (Negative Flow) 310-0107 31 A-5Valve Gp - Shuttle 323-7560 32 A-6Valve Gp - Solenoid and Pressure Reducing (Boom Lowering) 323-7894 33 C-7Valve Gp - Swing Cushion 158-9085 34 E-6

316E STANDARD

Valve Gp - Travel Left Counterbalance 199-0504 35 E-8Valve Gp - Travel Right Counterbalance 199-0504 36 E-7

Valve Gp - Control (Medium Pressure) 310-0165 38 D-7Pump Gp - Gear 349-4069 37 B-3

Valve Gp - Solenoid (Pressure Reducing) 259-7430 39 D-8

Attachment: Medium Pressure (Load Sensing)

TAP LOCATION

TapNumber Description Schematic

Location

GG Boom Lowering Pilot Pressure C-7HH Medium Pressure Pump Pressure D-7JJ Gear Pump Pressure B-3

A-5EE Idler Pump NFC PressureA-5FF Drive Pump NFC Pressure

D-8AA Pb1, Attachment Extend Pilot Pressure (A1)D-8BB Pa1, Attachment Retract Pilot Pressure (A2)

SOS Hydraulic Oil Sampling Port A-3PG Pilot Pump Delivery Pressure A-4

D Case Drain Pressure A-2

M2 Idler Pump Delivery Pressure B-3M1 Drive Pump Delivery Pressure A-3

PsM Power Shift Pressure A-2

FLUID POWER SYMBOLS

ONE POSITION TWO POSITION THREE POSITION

VENTED PRESSURIZED RETURN ABOVE FLUID LEVEL RETURN BELOW FLUID LEVEL

LINES CROSSING LINES JOINING

TWO-WAY THREE-WAY FOUR-WAY

SPRING CONTROL VALVES RESTRICTION LINE RESTRICTION(FIXED)

2-SECTION PUMP

MAIN AUX.

SPRING(ADJUSTABLE)

VARIABILITY LINE RESTRICTION(VARIABLE)

LINE RESTRICTIONVARIABLE and PRESSURE

COMPENSATED

PRESSURECOMPENSATION

PUMP: VARIABLE andPRESSURE COMPENSATED

ENERGY TRIANGLESHYDRAULIC PNEUMATIC

MEASUREMENT

PRESSURE TEMPERATURE FLOW

ROTATING SHAFTS

UNIDIRECTIONAL BIDIRECTIONAL

PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING

MANUAL CONTROL SYMBOLS

HYDRAULIC MOTORS

FIXEDDISPLACEMENT

VARIABLE DISPLACEMENTNON-COMPENSATED

UNIDIRECTIONAL

BIDIRECTIONAL

HYDRAULIC PUMPS

FLUID STORAGE RESERVOIRS

CROSSING AND JOINING LINES

VALVE ENVELOPES VALVE PORTS

BASIC COMPONENT SYMBOLS

FLUID CONDITIONERPUMP or MOTOR

FIXEDDISPLACEMENT

VARIABLE DISPLACEMENTNON-COMPENSATED

UNIDIRECTIONAL

BIDIRECTIONAL

VALVES

PILOT CONTROL SYMBOLSRELEASED PRESSURE

EXTERNAL RETURN INTERNAL RETURN

REMOTE SUPPLY PRESSURE

SIMPLIFIED COMPLETE INTERNALSUPPLY PRESSURE

ACCUMULATORS

SPRING LOADED GAS CHARGED

SOLENOIDor MANUAL

SOLENOIDand PILOT

SOLENOID and PILOT or MANUAL

COMBINATION CONTROLS

SOLENOID SERVO THERMAL DETENT

HYDRAULIC AND PNEUMATIC CYLINDERS

DOUBLE ACTINGSINGLE ACTING

BASICSYMBOL

SPRINGLOADED

CHECK VALVES

TWOPOSITION

INFINITEPOSITIONING

FLOW IN ONEDIRECTION

FLOW ALLOWED INEITHER DIRECTION

THREEPOSITION

CROSSFLOW

PARALLELFLOW

INTERNAL PASSAGEWAYS

NORMAL POSITION

A B

P T

A B

P TSHIFTED POSITION INFINITE POSITION

CONTROL VALVES

ATTACHMENT

MANUAL SHUTOFF

SHUTTLE PILOTCONTROLLED

ELECTRICAL SYMBOLSHydraulic Symbols (Electrical)

325-AG135 PK-14

Circuit IdentificationNumber

Wire Color Wire Gauge

Harness identification codeThis example indicateswire 135 in harness "AG".

325-PK-14

Wire Gauge

Wire Color

Circuit Number Identification

Wire Number Identification Codes

Current Standard

Previous Standard

Electrical Schematic Example Hydraulic Schematic Example

325-PK

Wire ColorCircuit Number Identification

B A

Wire

Wire

(EXAMPLE VALVE)

Current Standard

Transducer(Fluid)

Transducer(Gas / Air)

G

Generator

Electrical WirePressure Switch

MElectric Motor

Pressure Switch (Adjustable)

Temperature Switch

PressureSymbol

TemperatureSymbol

LevelSymbol

FlowSymbol

Electrical Symbols (Electrical)

T

Components are shown installed on a fully operable machine with the key and engine off, transmission shifterin neutral and with parking brake set.Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.

ATTACHMENT: MEDIUM PRESSURE (LOAD SENSING)

SCHEMATIC PART NUMBER: 349-1839, CHANGE: 04, VERSION: HEMEDIA NUMBER: KENR5860

THIS SCHEMATIC IS FOR THE 316E EXCAVATOR HYDRAULIC SYSTEM

Note: Refer to the Parts Manual using a specific serial number prefix in SIS before ordering parts from this schematic.

12345678

A

B

C

D

E

F

12345678

A

B

C

D

E

F

LINE PATTERNS

Drain / Return Lines

Component Group

Pilot / Load Sensing Pressure

Pressure Line

Attachment

Air Line

CALLOUTS

Taps (Pressure, Sampling, Sensor - by letter)YY

HYDRAULIC CIRCUIT COLOR DESCRIPTIONSPILOT PUMP OUTPUTIDLER PUMP OUTPUTSTEERING CIRCUITSUPPLY LINESTICK CYLINDER CONTROL CIRCUITLEFT TRAVEL MOTOR CONTROL CIRCUITATTACHMENT CONTROL CIRCUITSWING MOTOR CONTROL CIRCUITDRAIN / RETURN LINESWING BRAKE CONTROL CIRCUITDRIVE PUMP OUTPUTTRAVEL SPEED CONTROL CIRCUITBUCKET CYLINDER CONTROL CIRCUITRIGHT TRAVEL MOTOR CONTROL CIRCUITBOOM CYLINDER CONTROL CIRCUIT

(OUT) (R)

PSW PTAbR5

(DOWN)

(UP) (CLOSE)

R2

T(OPEN)(IN)

pB1

(DOWN)

dST1

(L)(IN)

R1

(FWD)(FWD)

(BACK) (BACK)

(UP)

Dr

PsM1

Pn1

PmM1

A1

S4

S3

S1

A4

A2

M2

A3

Pi

Pn2

(OUT)

PAC

DR2

DR3 DR4 DR5 DR6

DR1

P-IN

Pi1

Pi2

PSA2 PSA1

P1

P2

T-OUT2

T-OUT1

(FWD)

(BACK)(BACK)

(FWD)

TT

TP

T1

T2

T3

T4

CP1

CP2 bL3 BL3 AL3bL5

JR3(UP)

JR2(OPEN)

JR4(CLOSE)

JR1(DOWN)

JL3(IN)

JL1(OUT)

JL4(L)

JL2(R)

DrM

PG

INOUT

T

PC

TRAVEL(L) TRAVEL(R)

JLP

JLT

JRT

JRP

BOOM

BOOMSTICK

STICKSWING

SWING

BUCKET

BUCKET

A

BC

D

E

F

T

A1

P

A2B1B2

A BOOM REGENREPRV

ATT STEM 3EXT EPRV

ATT STEM 3RET EPRV

NFC2 LIMITEPRV

NFC1 LIMITEPRV

PS PRESSEPRV

TRAVEL SPEEDCHANGE SOL

SWING BRAKESOL

HYD LOCKSOL

P

(BOOM REGEN)

T

A

TB

P

aL6aL3PRg PLg

INOUT

B4

B7B1

B3

B6

B5

B2

DB1

DB2DB3

DB4

DB5 DB6

PB4PB5

PB6PB3 PB2

PB1

2 SPEEDTRAVEL

CONTROL

B A

DR

PR

SWING MOTOR

SWGPRKG BKCONTROL

SWGMOTORDRAIN

B1 A1DR

BG AG

SWGPRKG BKCONTROL

DRAINFILTER

NO

.1

(TR

AVE

L)

NO

.2(S

WIN

G)

NO

.3(L

OC

K)

HRHL

NFC-B2 NFC-A2

NFC-B2

NFC-A2

HR

HL

aL2

aL1aR1

aR2

aR3

bR3

bR2

bR1 bL1

bL2

bL4

aL4

bL1

aL1

aL5

aL5

Pa1

Pb1

Pa1

Pb1

bR1

aR1

bR3 aR2

bR2

bL4 aL4

bL2aL2

A1 A2 A3 A4 A5 A6 A7 A8

B1 B2 B3 B4 B5 B6 B7 B8C1 C2 C3 C4

aR3

STI

CK

(R)

BO

OM

(2)

STI

CK

(2)

BU

CK

ET

ATC

H

BO

OM

(1)

TRAV

EL(

R)

TRAV

EL(

L)

SW

ING

STI

CK

(1)

dB1

dB1

MU

bL6bL6

bL5

bL5dB

dB

R.C.V-D M.P.V-T

R.C.V-D

M.P.V-P

M.P.V-T

PRV-Dr

bR4

aR3-1

aR3-1

aR5

aR5

MU

dA1

dA1

PP

NFC- Pi

NFC- Pi

NFC- Dr

SOL2-Pi

SOL2-Pi

NFC- Dr

PP

MF-Pi

dB1-1

dB1-1

MF-Pi

dA

dA

PD-Dr

PD-Dr

PD-Pi

PD-Pi

PA1

PA1

bR4

aL2-1aL2-1

SHTL-A2

SHTL-A5

SHTL-A4

SHTL-A7

SHTL-A6 SHTL-A8

SHTL-A1 SHTL-A3

PRV-Dr

SHTL-A1

SHTL-A2

SHTL-A4

SHTL-A5

SHTL-A6 SHTL-A3

SHTL-A7

SHTL-A8

MF-Dr

MF-Dr

BR3AR1

BR1

BL1

AL1

AR3

BR2

AR2

BR1

AR1

PR

PR

PL

PL

BL1

AL1 AL2 BL2 BL4

BL4

AL4

BR2 AR2

AL4AL2 BL2

M1FF

SOS

JJ

PG

EE

GG

HH

BB

AA

M2

PsM

D

(28) VALVE GPMAIN CONTROL

335-0495

(22) SWITCH ASTRAVEL PRESSURE

349-5406

(29) VALVE GPPILOT (TRAVEL)

310-0415

(33) VALVE GPSOLENOID ANDPRESSURE REDUCING(BOOM LOWERING)323-7894

(26) VALVE GPJOYSTICK

(LEFT HAND)323-7948

(27) VALVE GPJOYSTICK (RIGHT HAND)

323-7947

(15) SENSOR GPPRESSURE

(BOOM DOWN CTRL)338-6970

(20) SENSOR GPPRESSURE (SWING CTRL)

338-6970

(16) SENSOR GPPRESSURE NFC1

338-6970

(31) VALVE GPPUMP CONTROL

(NEGATIVE FLOW)310-0107

(32) VALVE GPSHUTTLE323-7560

(8) MANIFOLD GPCONTROL (PILOT OILSUPPLY)215-5037

(17) SENSOR GPPRESSURE NFC2338-6970

(14) SENSOR GPPRESSURE (BOOMCYLINDER HEAD END)338-6971

(2) CYLINDER GPBOOM

360-4557

(34) VALVE GPSWING CUSHION

158-9085

(11) MOTOR GPSWING364-0978

(5) FILTER AND VALVE GPPILOT (HYDRAULIC OIL)158-8987

(37) PUMP GPGEAR

349-4069

(12) PUMP GPMAIN HYDRAULIC349-9085

(30) VALVE GPPRESSURE REDUCING(BOOM PRIORITY)352-7065

(25) VALVE GPCHECK(COOLER BYPASS)171-0002

(3) CYLINDER GPBUCKET360-4563

AR3 BR3

(4) CYLINDER GPSTICK360-4560

(19) SENSOR GPPRESSURE (IDLER PUMP)

338-6971(18) SENSOR GP

PRESSURE (DRIVE PUMP)338-6971

(7) FILTER GPRETURN OIL

259-0869

(24) TANK ANDFILTER GP

HYDRAULIC348-1230

(13) SCREEN GPHYDRAULIC259-0920

(6) FILTER GPCASE DRAIN

289-8194

(1) ACCUMULATOR GP164-6981

(21) SWITCH ASPRESSURE (IMPLEMENT)

319-4407

(9) MOTOR GPLEFT TRAVEL185-6953

(10) MOTOR GPRIGHT TRAVEL185-6953

(35) VALVE GPTRAVEL LEFT

COUNTERBALANCE199-0504

(36) VALVE GPTRAVEL RIGHT

COUNTERBALANCE199-0504

Pp3

B ABA

T1

Pp3

TRAVEL MOTOR (LEFT) TRAVEL MOTOR (RIGHT)

T2 T2

T1

AG BGBG

2 SPEEDTRAVEL

CONTROL

DRAINFILTER

SWGMOTORDRAIN

AG

(23) SWIVEL GP162-4696

(38) VALVE GPCONTROL(MEDIUM PRESSURE)310-0165

(39) VALVE GPSOLENOID

(PRESSURE REDUCING)259-7430

M.P.V-P

SOL2-Dr

SOL2-Dr

Pb1 B1 A1 P PPS

T1PLSPa1

(RET)(EXT)

(EXT)

(RET)

T2

A1

B1

A2

B2

P T

(EXT)

(RET)

CALLOUTS

(52) VALVE GP - CONTROL 138-1234

Callout Number(Machine Location from

Component LocationsTable)

ComponentName

Part Number

MACHINE COMPONENT LOCATIONS

3635 34 23 1411109

4

3

2

MAIN HYDRAULIC PUMP AND TANK

JJ

FF

EE

SOS PG

PsM

D

M2

M1

37

31

24

17

16

13

12

7

6

5

WORK TOOL CONTROL (FRONT VIEW)

OPERATORPLATFORM

MAIN CONTROLVALVE

HYDRAULICTANK

FWD

MAIN CONTROL VALVE

BOTTOMVIEW

TOPVIEW

HH

GG

BBAA

39

38

33

32

30

29

28

27

26

25

2221

20

19

18

15

8 1