UENR3242UENR3242-00_SIS

7/21/2019 UENR3242UENR3242-00_SIS

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UENR3242September 2013

Shovel Crane with Flow Restriction

320E Excavator Hydraulic System - Attachment

Printed in U.S.A.© 2013 Caterpillar, AllRights Reserved

LAK1-UP

O N E PO S IT I ON T W O P O SI T IO N T HR E E PO S IT I ON

V EN TE D P RE SS UR IZ ED R ET UR NA BO VE FL UI DL EV EL R ET UR NB EL OW FL UI DL EV EL

L I NE S C RO S SI N G L I NE S J OI N IN G

TWO - WAY TH RE E- WAY FO UR - WAY

S P RI N G C O NT R OL V A LV E S R E ST RI C TI O N L I NE R E ST RI C TI O N(FIXED)

PUMP(2 - SECTION)

SPRING(ADJUSTABLE)

V AR IA BI LI TY L IN ER ES TR IC TI ON(VARIABLE)

PRESSURECOMPENSATION

PUMP(VARIABLE&PRESSURE

COMPENSATED)

MEASUREMENT

PR ES SUR E TE MP ERAT URE FL OW

ROTATING SHAFTS

U NI DI RE CT IO NA L B ID IR EC TI ON AL

PUSH - PULL LEVER PEDALGENERAL MANUAL PUSHBUTTON SPRING

FIXEDDISPLACEMENT

VARIABLEDISPLACEMENTNON-COMPENSATED

UNIDIRECTIONAL

BIDIRECTIONAL

VALVE ENVELOPES VALVE PORTS

FLUIDCONDITIONERPUMPORMOTOR

FLUID POWER SYMBOLS

UNIDIRECTIONAL

BIDIRECTIONAL

RELEASEDPRESSURE

E XT ER NA L RE TU RN I NT ER NA L RE TU RN

REMOTESUPPLYPRESSURE

SIMPLIFIED

HYDRAULICPUMPS

ACCUMULATORS

S P RI N G L O AD E D G A S CH A RG E D

SOLENOIDOR MANUAL

SOLENOID&PILOT

SOLENOID&PILOTORMANUAL

SOLENOID SERVO THERMAL DETENT

HYDRAULIC&PNEUMATICCYLINDERS

DOUBLEACTINGSINGLEACTING

BASICSYMBOL

SPRINGLOADED

CHECKVALVES

2 POSITIONINFINITE

POSITIONING

FLOWINONEDIRECTION

FLOW INEITHER

DIRECTION

3 POSITION

CROSSFLOW

PARALLELFLOW

INTERNALPASSAGEWAYS

NORMALPOSITION

AB

P T

AB

P T

SHI FTEDPOSI TI ON I NFINI TEPOSI TION

CONTROLVALVES

ATTACHMENT

MANUALSHUTOFF

S HUT TL E P ILO TCONTROLLED

MAIN AUX

LINERESTRICTION(VARIABLE&PRESSURE

COMPENSATED)

MANUALCONTROLSYMBOLS

HYDRAULICMOTORS

FLUIDSTORAGERESERVOIRS

CROSSING &JOINING LINES

VALVES

PILOT CONTROLSYMBOLS

COMBINATIONCONTROLS

BASICCOMPONENT SYMBOLS

ENERGYTRIANGLESHYDRAULIC PNEUMATIC

INTERNALSUPPLYPRESSURE

COMPLETE

FIXEDDISPLACEMENT

VARIABLEDISPLACEMENTNON-COMPENSATED

HYDRAULICSYMBOLS(ELECTRICAL)

ELECTRICAL SYMBOLS TABLE

325-AG135 PK-14

HARNESSIDENTIFICATIONCODE THISEXAMPLEINDICATESWIRE135 INHARNESS“AG”

325-PK-14

WIREGAUGE

WIRECOLOR

CIRCUITNUMBER

IDENTIFICATION

WIRENUMBERIDENTIFICATIONCODES

CURRENT STANDARD

PREVIOUSSTANDARD

E LE CT RI CA L SC HE MA TI C EX AM PL E H YD RA UL IC S CH EM AT IC E XA MP LE

325-PK

WIRECOLORCIRCUITNUMBER

IDENTIFICATION

B

WIRE

WIRE

(EXAMPLEVALVE)

CURRENT STANDARD

TRANSDUCER(FLUID)

M

ELECTRICMOTORTRANSDUCER(GAS/ AIR)

G

GENERATOR

PRESSURE SWITCH ELECTRICAL WIREPRESSURESWITCH(ADJUSTABLE)

TEMPERATURESWITCH

PRESSURE

SWITCH

TEMPERATURE

SWITCH

LEVEL

SWITCH

FLOW

SWITCH

ELECTRICALSYMBOLS(ELECTRICAL)

A

CIRCUITNUMBERIDENTIFICATION

WIRECOLOR

WIREGAUGE

T

U E N R 3 2 4 2

3 0 P a g e , ( D i m e n s i o n s : 3 9 i n c h e s x 2 8 i n c h e s )

FWD

BOOM

SWINGDRIVE

MAINCONTROL

VALVE

TOP VIEWFWD

OPERATOR CONTROL (CAB REMOVED)

4 6

125

35

13 36

39

3 34 3317 2 24

23

40

41

44

42

18

263125

45

MAIN CONTROL VALVE

FWD

FWD

RIGHT SIDE VIEW

LEFT SIDE VIEW

BRG

38

19

27

21

10

37

1

22

29

20

32

30

Tap

Number Description

Schematic

Location

PG PilotPump DeliveryPressure A-4

SOS Oil Sampling Port A-4

G1 Drive Pump DeliveryPressure A-3

G2 IdlerPump DeliveryPressure B-3

D Pump Case DeliveryPressure A-3

AA Boom Up Limit REPRV Pressure D-4

Ps Powershift Pressure B-2

Pn1 Negative Flow Control -Drive Pump A-2

Pn2 Negative Flow Control -IdlerPump B-2

BRG Boom Regeneration Pressure B-8

TapLocation

Pressure and Sampling

CheckPart Numbersin the PartsManualsfor your SpecificMachine

PG

AA

SOS

7

9

8

16

4315 28

11

D

MAIN HYDRAULIC PUMP

G1Ps1

Pn1

G2

Ps Pn214

MACHINE COMPONENT LOCATIONS WORKTOOL CONTROL

STICK CYLINDER

320E STANDARD

DescriptionPart

Number

Machine

Location

Schematic

Location

AccumulatorGp -Hydraulic 164-6981 1 B-4

Control Gp - Joystick (LH) 323-7948 2 E-3

Control Gp - Joystick (RH) 323-7947 3 E-2

Cy li nd e r Gp - B o om 3 41 - 27 9 0 4 F - 8

Cylinder Gp - Bucket 356-8788 5 D-1

Cy li nd e r Gp - S t ic k 3 41 - 28 0 2 6 F - 1

F ilt er and V alv e Gp - Pilo t(H yd. Oil) 158- 89 87 7 B- 4

F ilt er Gp - Oil (H ydr auli c R et ur n) 188- 41 45 8 A- 4

F il te rG p - Oi l( Hy dr au li c, C as e D ra in ) 2 89 -8 19 4 9 A -4

M an if ol d G p - C on tr ol (P il ot O il Su pp ly ) 2 15 -5 03 7 1 0 C -4

M ot o r Gp - S w in g 3 34 - 99 6 8 1 1 F - 6

Motor Gp - Travel (Left) 209-5992 12 F-5

Motor Gp - Travel (Right) 209-5992 13 F-4

Pump Gp -Ma in Hydrau l ic 339-0512 14 B-2

Screen Gp -Hydrau l ic 326-4408 15 A-4

S en so rG p - Pr es su re ( Bo om U p Co nt ro l) 3 38 -6 97 0 1 8

16

D-2

SensorGp -Pressure (Boom Cyl.Head End) 338-6971 39 E-7

S en so r Gp - P r es su re ( B oo m C yl . Ro d En d) 3 38 -6 97 1

17

F-8

S en so r Gp - Pr es su re (B oo m D ow n C tr l) 3 38 -6 97 0

19

D-3

S en so rG p - Pr es su re (D ri ve Pu mp ) 3 38 -6 97 1

20

A-7

S en so rG p - Pr es su re ( Id le rP um p) 3 38 -6 97 1

21

A-6

Sensor Gp - Pressure (NFC1) 338-6970

22

D-7

Sensor Gp - Pressure (NFC2) 338-6970

23

D-6

S en so rG p - Pr es su re ( Sw in g C tr l) 3 38 -6 97 0

24

D-2

S wi tc h A s - Pr es su re (I mp le me nt ) 3 19 -4 40 7

25

D-2

S wi tc h A s - Pr es su re (L ef t Tr av el ) 3 19 -4 40 7

26

F-3

S wi tc h A s - Pr es su re (R ig ht T ra ve l) 3 19 -4 40 7

27

F-2

SwivelGp 234-4440

28

E-5

Tank and FilterGp -Hydraulic 341-5365

29

A-4

V al ve G p - C he ck ( Oi l Co ol er B yp as s) 3 35 -0 30 0

30

D-5

Valve Gp - Main Control 335-0180

31

D-7

Va lv e G p - Pi lot (W it h S hu tt le) 3 23- 776 232

F-3V a lv e G p - P re s su r e Re d uc i ng ( B oo m P ri or i ty ) 3 52 - 70 6 5

33

C-2

Valve Gp -Shuttle 323-7560

34

D-2

V a lv e Gp - S wi n g Cu sh i on ( Cr o ss o ve r Rel ie f ) 1 58 - 90 8 5

35

E-6

V al ve G p - Tr av el C ou nt er ba la nc e (L ef t ) 3 22 -8 71 4

36

E-5

V a lv e G p - T r av e l Co u nt e rb a la nc e ( R ig h t) 3 22 - 87 1 4 E - 4

ComponentLocation

Attachment:ShovelCranewithFlowRestriction

Block Gp 323-7604 37 B-8

Block Gp 323-7765 38 D-5

Valve - Check (Boom) 4I-8789 40 E-7

Valve - Check (Bucket) 4I-8789 41 D-1

Valve - Check (Stick) 4I-8789 42 E-1

V a lv e Gp - Che c k A n d Re li ef ( B oo m Lo wer i ng Con t ro l ) 3 3 5- 0 40 5 4 3 F - 7, F - 8

V al ve Gp - Ch ec k A nd Re li ef ( St ic k L oa d C on tr ol ) 3 52 -7 19 6 4 4 E -1

V al ve Gp - So le no id (B oo m / Bu ck et C on tr ol ) 3 35 -0 22 3 4 5 D -4

7/21/2019 UENR3242UENR3242-00_SIS

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U E N R 3 2 4 2

3 0 P a g e , ( D i m e n s i o n s : 3 9 i n c h e s x 2 8 i n c h e s )

Components are shown installed on a fully operable machine with the key and engine off, transmission shifter in neutraland with parking brake set.

Refer to the appropriate Service Manualfor Troubleshooting, Specif ications and Systems Operations.

ATTACHMENT: SHOVEL CRANEWITHFLOW RESTRICTION

SCHEMATICPART NUMBER: 372-5628, CHANGE: 00, VERSION: HE

MEDIANUMBER: UENR3242

THISSCHEMATICISFORTHE320EEXCAVATORHYDRAULICSYSTEM

12345678

A

B

C

D

E

F

12345678

A

B

C

D

E

F

LINEPATTERNS

Drain / Return Lines

Component Group

Pilot / Load Sensing Pressure

Pressure Line

Attachment

Air Line

CALLOUTS

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

HYDRAULICCIRCUIT COLORDESCRIPTIONS

PILOT PUMPOUTPUT

IDLERPUMPOUTPUT

POWERSHIFT CONTROL CIRCUIT

SUPPLYLINE

STICKCYLINDERANDCONTROL CIRCUIT

LEFT TRAVEL MOTORANDCONTROL CIRCUIT

SWING MOTORANDCONTROL CIRCUIT

DRAIN/ RETURNLINE

SWING PARKING BRAKECONTROL CIRCUIT

DRIVEPUMPOUTPUT

TWO SPEEDTRAVEL CONTROL

BUCKET CYLINDERANDCONTROL CIRCUIT

RIGHT TRAVEL MOTORANDCONTROL CIRCUIT

BOOM CYLINDERANDCONTROL CIRCUIT

P2

T

P1

A2 A1

P2 P1

pR5f

pL3b

pL3f

CRN-T

PRV-B

TCV Pi

CYL

DRSLCV-Dr

SLCV-Pi

SLCV-T

(45) VALVE GPSOLENOID(BOOM / BUCKET CONTROL)

335-0223

L5

R5

SOS

(28) TANK AND FILTER GPHYDRAULIC

341-5365

(24) SWITCH ASPRESSURE(IMPLEMENT)319-4407

(18) SENSOR GPPRESSURE

(BOOM UP CONTROL)

338-6970

(7) FILTER AND VALVE GPPILOT (HYDRAULIC OIL)

158-8987

(9) FILTER GPOIL (HYDRAULIC,

CASE DRAIN)

289-8194

(8) FILTER GPOIL

(HYDRAULIC RETURN)188-4145

(15) SCREEN GPHYDRAULIC

326-4408

DR6T-OUT1DR5Pi2DR4DR3

P2 P-IN PSA2 DR1 PSA1 DR2T-OUT2Pi1

PAC

SWGPRKG BKCONTROL

2 SPEEDTRAVEL

CONTROL

P1

TRAVEL MOTOR(LEFT) TRAVEL MOTOR(RIGHT)

Pp3

B A B A

AG

AGBG

BG

T2T2

T1T1

Pp3

2 SPEEDTRAVEL

CONTROL

DRAINFILTER

SWGMOTORDRAIN

(FWD) (FWD)(BKWD) (BKWD)

T

OUT

PG PC

IN

DRAINFILTER

PD-Dr

MF-TANKPD-Pi

NFC-Pi

MF-PpST

L6

SP2

R1L1 L2 R2

PRV-T

dST

NFC-Dr

R.C.V-D

dR1b

BLCV-Dr

SLCV-Dr

MF-P

MF-TANK

RDr

pR5b

pL5f

P2

pL4b

pR4b

pSR

pR6f

SLCV-Pi

pL5b

pR3b

A1 A2 A3 A4 A5 A6 A7 A8

B1 C1 B2 B3 C2 B4 C 3 B5 B6 B7 C 4 B8

pR3f PRV-B

P1

BLCV-Pi

pBR

P A

B

T

pL6f

PRV-T

(OUT) (IN) (R) (L) (CLOSE)(OPEN) (DOWN) (UP)

JLP

JLT

JRP

JRT

BOOMBUCKETSTICK SWING

JL1 JL3 JL2 JL4 JR4JR2 JR3JR1

TP

TT

TRAVEL(L) TRAVEL(R)

(FWD) (BKWD) (FWD)(BKWD)

T1T5T2 T4T6T3

1

1

2

23

3

4

4

5

5 6

6

pR2bpL2bpL1f pR1f

PD-Pi

PD-Dr CRN-T

HYD. LOCKSOL

BOOM UPLIMITREPRV

BUCKET OPENLIMIT REPRV

TRAVEL SPEEDCHANGESOL

SWING

BRKSOL


(BOOM DOWN CTRL)

338-6970 (23) SENSOR GPPRESSURE(SWING CTRL)338-6970

(36) VALVE GPTRAVELCOUNTERBALANCE (RIGHT)322-8714

(27) SWIVEL GP

234-4440

(31) VALVE GPPILOT (WITH SHUTTLE)

323-7762

(2) CONTROL GPJOYSTICK (LH)

323-7948

(3) CONTROL GPJOYSTICK (RH)

323-7947

(33) VALVE GPSHUTTLE323-7560

(41) VALVE

CHECK (BUCKET)4I-8789

(44) VALVE GPCHECK AND RELIEF(STICK LOAD CONTROL)352-7196

(42) VALVE

CHECK (STICK)4I-8789

(10) MANIFOLD GPCONTROL(PILOT OIL SUPPLY)215-5037

(1) ACCUMULATOR GPHYDRAULIC164-6981

(6) CYLINDER GPSTICK

341-2802

(5) CYLINDER GP

BUCKET356-8788

(32) VALVE GPPRESSURE REDUCING

(BOOM PRIORITY)352-7065

PG

(13) MOTOR GPTRAVEL (RIGHT)209-5992

(25) SWITCH ASPRESSURE

(LEFT TRAVEL)319-4407

(26) SWITCH ASPRESSURE

(RIGHT TRAVEL)319-4407

(12) MOTOR GPTRAVEL (LEFT)

209-5992

(35) VALVE GP

TRAVELCOUNTERBALANCE (LEFT)

322-8714

(11) MOTOR GPSWING334-9968

A B

MU

DR

PG

SWING MOTORSWG

PRKG BKCONTROL

SWGMOTORDRAIN

(L)(R)

A1 B1DR

AG BG

R4L4

BP2

(34) VALVE GPSWING CUSHION

(CROSSOVER RELIEF)158-9085

MU

(38) BLOCK GP323-7765

(37) BLOCK GP323-7604

(30) VALVE GPMAIN CONTROL

335-0180

(21) SENSOR GP

PRESSURE(NFC 1)

338-6970


(NFC 2)338-6970

A

E

C

B

NFC1LIMIT

EPRV

NFC2LIMITEPRV

R.C.V-D

pR5f

L2

L1

R3

pR3b

pL2b

pL3f

pL5b

pL3b

pL4b

L5

L4

pL5f

pR1f

R5

R4

L6

pR6f

pR2b

pSR

MU

R1

R2

SP2

pR3f

pR4b

pST

dST

P1 P2

pL6f

pL1f

pR5b

dR1b

RDr

pBR

NFC-PiNFC-Dr

SLCV-T

TRAVEL(L)

TRAVEL(R)

STR-TRAVEL

BOOM(1)BOOM(2)

BOOMREGEN

REPRV

SWING

PRIORITYSOL

SWING

STICK(2)

STICK(1)

(FWD)

(FWD)

(BKWD)

(BKWD)

(DOWN)

(UP)

(UP)

(R)

(L)

(OUT)

(OUT)

(IN)

(IN)

NFC-Dr1NFC-S1 NFC-S2NFC-Dr2

R6

L3

(CLOSE)(OPEN)

BUCKET

T

BT3

ST6

BRG

BP2

NFC1 NFC2

STRAIGHT

TRAVEL SOL

(19) SENSOR GP

PRESSURE(DRIVE PUMP)

338-6971


(IDLER PUMP)338-6971

(29) VALVE GPCHECK

(OIL COOLERBYPASS)335-0300

BRG

PsM2 A2

A1

G1

S1

Pi

Ps2

Pn2

G4

Pm

Ps1

M1

M2

S3

G2

G3

Pn1

PsM1

A3

DrM

Dr

G2

AA

D

Ps

Pn2

Pn1

G1

P2

P1

NFC2

NFC1

(14) PUMP GPMAIN HYDRAULIC

339-0512

PS PRESS

EPRV

PUMP-S2PUMP-S1

BLCV-Dr

BLCV-Pi

X

X

Dr

Pi

T

CYL CV

X

Dr

CVCYL

Pi

T

X

R3

(43) VALVE GPCHECK AND RELIEF

(BOOMLOWERING CTRL)

335-0405


(BOOM CYL. HEAD END)338-6971

(16) SENSOR GPPRESSURE(BOOM CYL.ROD END)338-6971

(4) CYLINDER GPBOOM

341-2790

(40) VALVECHECK (BOOM)4I-8789

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UENR3242UENR3242-00_SIS