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INTERACTIVE SCHEMATIC Bookmarks

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Information Component Table Tap Table Fluid Power Symbols Electrical Symbols

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EC-C1

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UENR2490-05 May 2018

390F Excavator Hydraulic System HJD1-UP TYE1-UP MGF1-UP HSM1-UP GAY1-UP FEH1-UP HNG1-UP

© 2018 Caterpillar, All Rights Reserved

Printed in U.S.A.

COMPONENT LOCATION Description

Part Number

Machine Location

Schematic Location

Accumulator & MTG Gp - Hydraulic (Charged)

335-0546

1

D-2

Filter Gp - Oil (Hydraulic)

185-0336

2

A-7

Filter Gp - Oil (Hydraulic) (Case Drain)

6E-5534

3

A-7

Filter Gp - Oil (Hydraulic) (Return)

188-4145

4

A-8

Manifold Gp - Control (Pilot Oil Supply)

417-8013

5

D-2

Motor Gp - Fan

364-0983

6

B-8

Motor Gp - Swing (Front)

295-9447

7

F-4

Motor Gp - Swing (Rear)

295-9446

8

F-2

Motor Gp - Travel (LH)

209-5895

9

F-8

Motor Gp - Travel (RH)

209-5895

10

F-7

Pump Gp - Fan

448-9705

11

B-6

Pump Gp - Main Hydraulic

369-9655

12

A-2

Pump Gp - Pilot

369-9658

13

B-5

Sensor Gp - Pressure (Boom Extend)

344-7392

14

C-4

Sensor Gp - Pressure (Boom Pump)

344-7392

15

D-4

Sensor Gp - Pressure (Boom Retract)

344-7392

16

C-6

Sensor Gp - Pressure (Bucket Extend)

344-7392

17

D-4

Sensor Gp - Pressure (Bucket Retract)

344-7392

18

D-6

Sensor Gp - Pressure (Stick Extend)

344-7392

19

F-4

Sensor Gp - Pressure (Stick Pump)

344-7392

20

E-4

Sensor Gp - Pressure (Stick Retract)

344-7392

21

F-6

Sensor Gp - Pressure (Swing)

344-7392

22

E-4

Sensor Gp - Pressure (Travel LH)

344-7390

23

C-8

Sensor Gp - Pressure (Travel RH)

344-7390

24

C-7

Swivel Gp

295-9595

25

E-7

Valve Gp - Check (Fan)

369-8475

26

E-6

Valve Gp - Fan Reversing

360-4604

27

C-7

Valve Gp - Main Control

381-1859

28

C-6

Valve Gp - Pilot (Travel, Shuttle)

369-8502

29

D-7

Valve Gp - Solenoid (Manifold)

447-1041

30

C-2

Valve Gp - Swing Cushion

315-4394

31

E-3

Valve Gp - Travel (Counterbalance) (LH)

155-9200

32

E-8

Valve Gp - Travel (Counterbalance) (RH)

155-9200

33

E-7

Note: Check Part Number In The Part Manual For Your Specific Machine.

TAP LOCATION Tap Number

Description

Schematic Location

AA

Boom Pump Output Pressure

BB

Stick Pump Output Pressure

B-1

CC

Power Shift Pressure

C-2

DD

Stick Pump NFC PRV Pressure

C-2

EE

Boom Pump NFC PRV Pressure

C-3

PG

Pilot Pressure

A-7

Oil Sampling Port

A-7

SOS

B-4

FLUID POWER SYMBOLS BASIC COMPONENT SYMBOLS

MAIN AUX.

PUMP or MOTOR

SPRING (ADJUSTABLE)

VARIABILITY

CONTROL VALVES

SPRING

FLUID CONDITIONER

PRESSURE COMPENSATION

LINE RESTRICTION (VARIABLE)

TWO POSITION

2-SECTION PUMP

HYDRAULIC PNEUMATIC ENERGY TRIANGLES

ATTACHMENT

LINE RESTRICTION

VALVE PORTS

TWO-WAY

THREE POSITION

PUMP: VARIABLE and PRESSURE COMPENSATED

VARIABLE and PRESSURE COMPENSATED

VALVES

VALVE ENVELOPES

ONE POSITION

LINE RESTRICTION (FIXED)

RESTRICTION

FOUR-WAY

THREE-WAY

CONTROL VALVES

CHECK VALVES

AB

AB

P T NORMAL POSITION

P T SHIFTED POSITION

INFINITE POSITION

SHUTTLE

SPRING LOADED

BASIC SYMBOL

PILOT CONTROLLED

FLUID STORAGE RESERVOIRS

VENTED

RETURN ABOVE FLUID LEVEL

PRESSURIZED

RETURN BELOW FLUID LEVEL

MEASUREMENT

PRESSURE

TEMPERATURE

ROTATING SHAFTS

FLOW

UNIDIRECTIONAL

BIDIRECTIONAL

COMBINATION CONTROLS

SOLENOID

SOLENOID or MANUAL

SOLENOID and PILOT or MANUAL

SOLENOID and PILOT

SERVO

DETENT

THERMAL

MANUAL CONTROL SYMBOLS

MANUAL SHUTOFF

PUSH-PULL LEVER

RELEASED PRESSURE

EXTERNAL RETURN

SPRING LOADED

HYDRAULIC PUMPS VARIABLE DISPLACEMENT NON-COMPENSATED

PEDAL

LINES CROSSING

LINES JOINING

VARIABLE DISPLACEMENT NON-COMPENSATED

UNIDIRECTIONAL

UNIDIRECTIONAL

BIDIRECTIONAL

BIDIRECTIONAL

INTERNAL SUPPLY PRESSURE

COMPLETE

HYDRAULIC AND PNEUMATIC CYLINDERS

SINGLE ACTING

DOUBLE ACTING

INTERNAL PASSAGEWAYS

HYDRAULIC MOTORS FIXED DISPLACEMENT

SPRING

REMOTE SUPPLY PRESSURE

SIMPLIFIED

CROSSING AND JOINING LINES

GAS CHARGED

PUSH BUTTON

PILOT CONTROL SYMBOLS

INTERNAL RETURN

ACCUMULATORS

FIXED DISPLACEMENT

GENERAL MANUAL

INFINITE POSITIONING

FLOW IN ONE DIRECTION

THREE POSITION

PARALLEL FLOW

CROSS FLOW

TWO POSITION

FLOW ALLOWED IN EITHER DIRECTION

ELECTRICAL SYMBOLS Hydraulic Symbols (Electrical)

G Transducer (Fluid)

Transducer (Gas / Air)

Pressure Switch (Adjustable)

Pressure Switch

M

Generator

Electric Motor

Electrical Wire

Temperature Switch

Electrical Symbols (Electrical)

T

Pressure Symbol

Temperature Symbol

Level Symbol

Flow Symbol

Wire Number Identification Codes

Electrical Schematic Example

Hydraulic Schematic Example Current Standard

Current Standard Harness identification code This example indicates wire 135 in harness "AG".

Wire Circuit Number Identification

Wire Color

325-AG135 PK-14 325-PK Circuit Identification Number

Wire Color

Wire Gauge

Previous Standard Wire Color

Wire

325-PK-14 B Circuit Number Identification

A

Wire Gauge (EXAMPLE VALVE)

8 (9) MOTOR GP TRAVEL (LH) 209-5895

7

6

(10) MOTOR GP TRAVEL (RH) 209-5895

TRAVEL MOTOR (LEFT)

5

4

3

TRAVEL MOTOR (RIGHT) 34 Pi4 Dr4

Pi5

Pi

F

Dr

Dr Dr

L6a

(HEAD)

L6b

14

13

15

R6

16

PR PD

(ROD)

30

(21) SENSOR GP PRESSURE (STICK RETRACT) 344-7392

PG

BG A

(HEAD)

46

PG

(8) MOTOR GP PM2-SW SWING (REAR) 295-9446 DB SWING MOTOR (REAR)

PG2

PG1

1

Dr

PG

AG

DB SWING MOTOR (FRONT)

PM2-CV3 PMDr-CV3

Pi Pi

Pi

2

BG

(19) SENSOR GP PRESSURE (STICK EXTEND) PA 344-7392 (7) MOTOR GP SWING (FRONT) 295-9447

STICK

AG B

B P

A

A1

PB

PA

M

M TS

B1

Pi3b

L5

A

B

(31) VALVE GP SWING CUSHION 315-4394

(20) SENSOR GP PRESSURE (STICK PUMP) 344-7392

P

PB

(LEFT)

R4

TRP2

X

PM2-TRL

T1

A TR

PM2-CV3

38

COMBINER

Pi3a

B TL

STICK CYLINDER

L5

H

T2

BUCKET CYLINDER

R5

K

(26) VALVE GP CHECK (FAN) 369-8475

DRAIN FILTER

SWING

pL4b

(22) SENSOR GP PRESSURE (SWING) 344-7392

BOOM CYLINDER

PM1-BYP

PM1-BYP

J W

PM2-CV2 PM2-SW

PM1-FAN

L

L3

PM2-TRL

L6b

TRL-T

L1

TT TRAVEL (L)

9

7

Dr2 Pi2

Pi1

(5) MANIFOLD GP CONTROL (PILOT OIL SUPPLY) 417-8013

(RIGHT)

PMDr-CV2

(17) SENSOR GP PRESSURE (BUCKET EXTEND) 344-7392

(28) VALVE GP MAIN CONTROL 381-1859

PM-T

PMDr-T

T2

(BKWD) T5

TLP1

(BKWD)

T1

T3

L1

4

3

1

R1

2

TLP2

TRP2

(23) SENSOR GP PRESSURE (TRAVEL LH) 344-7390

(16) SENSOR GP PRESSURE (BOOM RETRACT) 344-7392

T4 TRP1 (24) SENSOR GP PRESSURE (TRAVEL RH) 344-7390

47

44

45

BUCKET HE PC PRV+ (EXTEND)

8

BUCKET HE CT PRV+ (EXTEND)

9

BUCKET RE PC PRV+ (RETRACT)

10

BUCKET RE CT PRV+ (RETRACT)

13

STICK HE PC PRV+ (EXTEND)

14 15

STICK HE CT PRV+ (EXTEND) STICK RE PC PRV+ (RETRACT)

16

STICK RE CT PRV+ (RETRACT) MACHINE ECM CONNECTOR

29

BOOM ANTI DRIFT VALVE

30

STICK ANTI DRIFT VALVE

31

SWING LEFT PRV

32 33

SWING RIGHT PRV BOOM SIDE WARM-UP SOL

34 35

STICK SIDE WARM-UP SOL FLOW COMBINER PRV

36

STRAIGHT TRAVEL PRV

37

PUMP 1 BYPASS CUT PRV

38

PUMP 2 BYPASS CUT PRV

41

PUMP 1 DISP SENSOR (ANALOG)

42

PUMP 2 DISP SENSOR (ANALOG)

43

PS PRESS EPRV

44

PUMP 1 NFC PRV

45 46

PUMP 2 NFC PRV SWING BRAKE SOL

47

TRAVEL SPEED CHANGE SOL

48

HYD LOCK SOL

P

A5

(14) SENSOR GP PRESSURE (BOOM EXTEND) 344-7392

BOOM

B

(6) MOTOR GP FAN 364-0983

B1

A

A2

B4

2 SPEED TRAVEL CONTROL

H3(A)

Pi1

A4

B3

A3

A2

B2

EE

B1

DD

A1

(30) VALVE GP SOLENOID (MANIFOLD) 447-1041

C

CC

CR(A)

L5(A)

L5(B)

CR(B)

H3(B)

BB

T P-BT

X

Dr B

Pi

B2

(11) PUMP GP FAN 448-9705

P.P.O

Pressure Line Pilot / Load Sensing Pressure

MA

(13) PUMP GP PILOT 369-9658

A

PB

PA

Air Line

CALLOUTS

B

DL

Callout Number

Taps (Pressure, Sampling, Sensor - by letter) Connectors (By letter)

D

(52) VALVE GP - CONTROL 138-1234 Part Number

Component Name

HYDRAULIC CIRCUIT COLOR DESCRIPTIONS

41

G

PM-T

G M1A

(2) FILTER GP OIL (HYDRAULIC) 185-0336

PMDr-T

DL

(Machine Location from Component LocationsTable)

PG

TRL-T

Component Group

MB

P.P.I

(3) FILTER GP OIL (HYDRAULIC) (CASE DRAIN) 6E-5534

S

T1 T2

L

L1

T2

S

M1B

(12) PUMP GP MAIN HYDRAULIC 369-9655

SOS

8

B

YY

MB1

DRAIN FILTER

(4) FILTER GP OIL (HYDRAULIC) (RETURN) 6E-55346

B

Drain / Return Lines

PM1-FAN

5SOL-T

LINE PATTERNS

P-S

AA

L2

A

PM2-CV1

Dr1

L3

DR

D

33

PMDr-CV1

B

E

5SOL-T

L2

L3 DR

F

43

B5

P

A1

7

(HEAD)

SHPi

(27) VALVE GP FAN REVERSING 360-4604 A

BOOM RE CT PRV+ (RETRACT)

PMDr-BYP

BHPi

(FWD) T6

4

PMDr-CV1

29

(FWD)

BOOM HE CT PRV+ (EXTEND) BOOM RE PC PRV+ (RETRACT)

PMDr-CV3

T

C

2 3

PMDr-CV2

54

(ROD)

BOOM HE PC PRV+ (EXTEND)

PAC

PM2-CV2

R2 (HEAD)

BUCKET

TRAVEL (R)

R5

8

(18) SENSOR GP PRESSURE (BUCKET RETRACT) 344-7392

(29) VALVE GP PILOT (TRAVEL, SHUTTLE) 369-8502

TP

10

R1

P-BT

BYPASS PBT

DR-OUT

L6a

37

T-OUT

R6

48

P-IN

R2

TRAVEL (L)

L2

(1) ACCUMULATOR & MTG GP HYDRAULIC (CHARGED) 335-0546

32

pR3f TS

L2

36

35

TLP1

(ROD)

PM2-CV1

PMDr-BYP

R3

D

Pi3

(15) SENSOR GP PRESSURE (BOOM PUMP) 344-7392 Dr3

pL3b

Pi2

BHPi TLP2

1

DR1

2 SPEED TRAVEL CONTROL

STR TRAVEL

L4

(25) SWIVEL GP 295-9595

SHPi

B

PSA1

R4

A

P-S

DR2

L4

(L)

(R)

PSA2

(BKWD)

31

DR3

R3

(33) VALVE GP TRAVEL COUNTERBALANCE (RH) 155-9200

TRAVEL (R)

PSA3

L3

(FWD)

(FWD)

pR4f

TRP1

DR4

(BKWD)

C

A(UPPER)

PSA4

D

(32) VALVE GP TRAVEL COUNTERBALANCE (LH) 155-9200

B(LOWER)

DR5

B

PSA5

E

A

B(UPPER)

VALVE ECM CONNECTOR

IDENT

BYPASS PS

A(LOWER)

IDENT

42

PILOT PUMP OUTPUT BOOM & BUCKET PUMP OUTPUT COOLING FAN PUMP CONTROL CIRCUIT SUPPLY LINE STICK CONTROL CIRCUIT LEFT TRAVEL MOTOR CIRCUIT SWING MOTOR CIRCUIT DRAIN / RETURN LINE SWING BRAKE CIRCUIT STICK PUMP OUTPUT TRAVEL SPEED CONTROL CIRCUIT BUCKET CONTROL CIRCUIT RIGHT TRAVEL CONTROL CIRCUIT BOOM CONTROL CIRCUIT POWER SHIFT CONTROL CIRCUIT

THIS SCHEMATIC IS FOR THE 390F EXCAVATOR HYDRAULIC SYSTEM MEDIA NUMBER: UENR2490-05 SCHEMATIC PART NUMBER: 349-1967, CHANGE: 06, VERSION: HE

Components are shown installed on a fully operable machine with the key and engine off and with parking brake set. Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations. Refer to the Parts Manual using a specific serial number prefix in SIS before ordering parts from this schematic.

7

6

5

4

3

2

1

A

MACHINE - TOP RIGHT VIEW VIEW ALL CALLOUTS

6

9 27 32

33

10

MACHINE VIEW - FRONT RIGHT VIEW ALL CALLOUTS

8 31 25 7

29 23 24

MAIN CONTROL VALVE- REAR VIEW VIEW ALL CALLOUTS

26

18

21

16

5

28

22

15

20

1

19

17

14

PUMP - TOP RIGHT VIEW 11

3

VIEW ALL CALLOUTS

4

PG 2 SOS

13 AA 12 CC DD BB 30

EE