Uenr4713uenr4713 Sis

INTERACTIVE SCHEMATIC Bookmarks

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EC-C2 EC-C3

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E-C60 E-C61

VIEW ALL CALLOUTS EC-C1

When only one callout is showing on a

SCHEMATIC SYMBOLS AND DEFINITIONS  VALVES

INTERNAL PASSAGEWAYS

ENVELOPES

One Position

Two Position

Three Position

PORTS

Two-way

Three-Way

FLOW IN ONE DIRECTION

FLOW ALLOWED IN EITHER DIRECTION

Infinite Positioning

Two Position

PARALLEL FLOW

PUMPS CROSS FLOW

Three Position

FIXED DISPLACEMENT

Unidirectional

Bidirectional

Pump or Motor 

Variability

Fluid Conditioner 

Spring (Adjustable)

Spring

Pressure Compensation

Control Valves

Line Restriction (Variable)

Restriction

Line Restriction (Fixed)

Line Restriction Variable and Pressure Compensated

2-Section Pump

Attachment

Pump: Variable and Pressure Compensated

VARIABLE DISPLACEMENT NON- COMPENSATED

CYLINDERS

Four-Way

BASIC HYDRAULIC COMPONENT SYMBOLS

Unidirectional

Bidirectional

CONTROL  A B

 A B

P T

P T

Normal Position

Single Acting

Double Acting

MOTORS FIXED DISPLACEMENT

Shifted Position

Infinite Position

CHECK

 ACCUMULATORS Basic Symbol

Spring Loaded

Shuttle

Unidirectional

Bidirectional

VARIABLE DISPLACEMENT NON- COMPENSATED

Pilot Controlled

Spring Loaded Gas Charged

Unidirectional

Bidirectional MAIN  AUX.

PILOT CONTROL RELEASED PRESSURE

ROTATING SHAFTS

Unidirectional

External Return

Internal Return

Bidirectional

REMOTE SUPPLY PRESSURE

Simplified

Complete

Internal Supply Pressure

Hydraulic Pneumatic Energy Triangles

COMBINATION CONTROLS LINES Solenoid

Solenoid

Solenoid and

Servo

MEASUREMENT

UENR4713 June 2013

924K, 930K and 938K Wheel Loader  Hydraulic System 924K: ENC1-UP HJF1-UP

930K: DYB1-UP EYE1-UP

938K: HFW1-UP XXT1-UP

COMPONENT TABLE Component Location (Volume 1) Part Number

Machine Location

Schematic Location

 Accumulator Gp -Brake

360-9207

1

E-7, E-8

 Accumulator Gp -Charge

373-6953

2

E-6

Cooler Gp -Hydraulic Oil (Clayton Only)

421-8495

3

C-4

Cooler Gp -Transmission Oil (938K)

383-7596

4

D-3

Filter Gp -Gearbox

349-3667

5

E-3

Filter Gp -Hydraulic Oil

368-0754

6

E-4

Manifold Gp -Brake Accumulator

349-9089

7

E-7, E-8

Manifold Gp -Hystat Interlock Valve

347-0785

8

E-5

Manifold Gp -Hystat Loop (924K, 930K)

345-1707

Manifold Gp -Hystat Loop (938K)

356-8633

9

D-3, B-2

Motor Gp -Hystat (115cc)

307-3077

10

C-3

Motor Gp -Hystat (152cc) (924K, 930K)

307-3082

Motor Gp -Hystat (170cc) (938K)

341-7648

11

C-1

Motor Gp -Radiator/Hydraulic Fan

289-6394

12

C-8

Motor Gp - Radiator/Hydraulic Fan (Reversing)

289-6393

13

C-8

Orifice Gp -Motor Flushing Connector

9X-2614

14

D-2

Pedal Gp -Brake

342-0157

15

E-8

eCharge/LubPump Gp -

307-3079

16

D-4

Pump Gp - Fan/Brake (W/Brake Charging Valve)

307-3058

17

D-7, D-8

Pump Gp -Hystat (924K)

341-7638

Description

COMPONENT TABLE Component Location (Volume 2) Part Number

Machine Location

Schematic Location

 Accumulator Gp - Pilot

373-7014

31

F-4

 Accumulator Gp - Ride Control (924K)

373-7017

 Accumulator Gp - Ride Control (930K, 938K)

373-6960

32

F-3

 Accumulator Gp - Ride Control (924K)

373-7016

 Accumulator Gp - Ride Control (930K, 938K)

373-6962

33

F-3

Breather - Hydraulic Tank

258-2829

34

A-2

Cylinder Gp - Fusion Coupler

375-0724

35

D-7

Cylinder Gp - Wide Coupler

353-9375

36

D-5

Cylinder Gp - High Lift Tilt (930K)

351-8514

Cylinder Gp - High Lift Tilt (938K)

351-8515

37

F-4

Cylinder Gp - Lift (924K)

374-9705

Cylinder Gp - Lift (930K)

339-5593

38

F-4

Cylinder Gp - Lift (938K0

347-3853

Cylinder Gp - Steering (924K, 930K)

339-5595

Cylinder Gp - Steering (938K)

347-3852

39

D-1

Cylinder Gp - Tilt (924K)

374-9706

Cylinder Gp - Tilt (930K)

339-5594

40

F-4

Cylinder Gp - Tilt (938K)

347-3854

Manifold Gp - Rear Frame Return

347-8096

41

D-8

Manifold Gp Steering

346-5095

42

D2

Description

TAP TABLE

Tap Location Pressure and Sampling Volume 1 Tap Number 

Description

Schematic Location

P7

Char ge Pr essur e

E-4

P8

Char ge Fill

D-4

P9

Gear box SOS Gauge

E-3

P10

Hystat For war d Dr ive Pr essur e

D-3

P11

Hystat Rever se Dr ive Pr essur e

C-2

P12

Hydr aulic SOS Gauge

B-4

P13

Gear box Pr essur e

E-3

P14

Lube Pr essur e

E-3

P15

Clutch Pr essur e

E-2

P16

Fr ont Ser vice Br ake Pr essur e

E-8

8

7

6

5

4

3

2

1

F

F

(26)VALVE-CHECK P   ILOTSUPPLY 123-4750 (8)MANIFOLDGP HYSTATINTERLOCK   347-0785

(1)ACCUMULATORGP   BRAKE ACCUMULATOR 360-9207

(15)PEDALGP-BRAKE 342-0157

P7

(28)VALVEGP  PARK BRAKE 357-0377

P17

E

  s   e    k   a   r    B   o    T

(22)SENSORGP-PRESS PARK BRAKE 344-7391

  e    d  g   n    d   o   g    i   r   n    t   l   o    M  .   i    f   e   c  r   n    i   e   o  n    l   t   e  e   r   e    F  a   a    S   u    t    S    M    D    S

To Imp Pilot

T1

To Front  Axle

P14

P15

(23)TRANSMISSIONAR-GEARBOX 358-3002:(938k)   337-7053:(924k, 930k)

G

(5)FILTERGP-O(BSC) GEARBOX 349-3667

E

E

P16

G

T

(2)ACCUMULATORGP CHARGE ACCUMULATOR 373-6953

Z Y

(7)MANIFOLDGP   BRAKE ACCUMULATOR 349-9089

(19)SENSORGP PRESSURE (BRAKE CHARGE) 344-7391

E

T

HMU

(20)SENSORGP-PRESS HYSTAT LOOP(FORWARD) 349-1178

A2

 A1

F

S

Ms (17)PUMPGP- FAN/BRAKE (W/ BRAKE CHARGING VALVE) 307-3058 (18)PUMPGP  HYSTATPUMP (930k, 938k): 307-3065 (924k)341-7 638

SW

  n    i   a   r    D    t   o    l    i    P

U

C

P

(29)VALVE GP-SOLENOID HYSTATINTERLOCK 366-8955

(27)VALVEGP-CHECK (COOLERBYPASS) 385-9391

P8

(4)COOLERGP XMSNOIL 383-7596

To Rear   Axle

P10

  m   e    l   p   m    I

(9)MANIFOLDGP H   YSTATLOOP (938k): 356-8633

  g   n    i   r   e   e    t    S

B1

D

B2

Lube Pump

M Fan Brake Valve

P9

Rear Drain Manifold

   t   n   e

D

   2    f   )   o  s  e   c    1   h   n    i    2    L   8   x   s   e    O    h    V   i   9  c  n    0   3  s  :   n    0   -   i  o   s    3  n   e   m    i    1   D    7   (  e ,    4  a   g    P    R    0    3    N    E    U

P13

(6)FILTERGP-OIL HYDOIL 368-0754

(14)ORIFICEGP MOTORFLUSHING 9X-2614

1:1Drive Ratio

S1

Charge Pump

(16)PUMPGP CHARGE & LUBE 307-3079

(10)MOTORGP HYSTAT(115cc) 307-3077

M1

(25)VALVEGP-CHECK HYSTATFLUSHING 370-2280

(11)MOTORGP HYSTAT(170cc) (938k): 341-7648  (924k, 930k): 307-3082

S2

Hystat Pump

B

B U

M1

SA

U

M VALVE GPHIGHALTITUDE (NOT SHOWN) 388-9447

P

U

L

Mp

P

(24)VALVE GPHYDOILCOOLERBYPASS 348-2078

C

(21)SENSORGP-PRESSURE HYSTATLOOP(REVERSE) 349-1178

T1

 A

C

T1

G

B

T2

 A

T2

P11

Hydraulic Tank

R

(9)MANIFOLDGP HYSTATLOOP 345-1707:(9 24K, 930K)

(3)COOLERGP -HYDRAULICOIL 421-8495:(CLAYTONONLY)

L

G

(30)COOLERGP -HYDRAULICOIL 423-3531:( CAMP LARGO ONLY)

(13)MOTORGP -RADIATOR/HYDRAULICFAN(REVERSING) 289-6393

B

B SOS P12

Secondary Steer 

LINE PATTERNS PressureLine

(12)MOTORGP -RADIATOR/HYDRAULICFAN 289-3054

Pilot / LoadSensingPressure Drain/ ReturnLines ComponentGroup  Attachment

B

 AirLine

CALLOUTS

 A YY

Taps (Pressure,Sampling,Sensor-byletter)

52

Components(Bynumber)

HYDRAULICCIRCUITCOLORDESCRIPTIONS PILOT PUMP OUTPUT MAINPUMPOUTPUT LUBEPUMPCIRCUIT  AUXILIARY 1CIRCUIT LOADSENSECIRCUIT STEERINGCIRCUIT FAN/BRAKE CHARGE PUMP SUPPLY LINE QUICKCOUPLERCIRCUIT BRAKECIRCUIT  AUXILIARY 2CIRCUIT DRAIN/ RETURNLINE TILTCYLINDERCIRCUIT LIFTCYLINDERCIRCUIT HYSTATCIRCUIT LUBE PUMP SUPPLY CIRCUIT

924K, 930KAND 938KWHEEL LOADERHYDRAULIC SYSTEM

R

VOLUME 1of 2:DRIVE CIRCUITS

L

MEDIA NUMBER: UENR4713-00 SCHEMATICPART NUMBER: 423-4719, CHANGE: 00, VERSION: -Componentsareshowninstalledona fullyoperablemachinewiththekeyand engineoff,transmissionshifter  inneutralandwithparkingbrakeset. RefertotheappropriateServiceManualforTroubleshooting,Specifications andSystemsOperations. Note:RefertothePartsManualusinga specificserialnumberprefixinSISbeforeorderingpartsfromthisschematic.

Fan Motor (Standard) 8

7

6

5

4

3

2

1

 A

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STEERING PUMP DETAIL VIEW ALL CALLOUTS

61

STEERING MANIFOLD DETAIL VIEW ALL CALLOUTS

42 P1

58 57

RIGHT SIDE VIEW VIEW ALL CALLOUTS

2

1

RIGHT SIDE VIEW 24

19

18

VIEW ALL CALLOUTS

20

16

P11

11

9

P10

17

7

21

22 28

10

14

RIGHT SIDE VIEW

50

34

35

P4

64

41 59

P2

P6

62

VIEW ALL CALLOUTS

44

45 57

39

55

63

32

43

P18

33

60

51

REAR VIEW VIEW ALL CALLOUTS

4

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FRONT VIEW VIEW ALL CALLOUTS

48

31

P5

P3

56 52

53 54

36

FRONT CYLINDERS VIEW ALL CALLOUTS

37 38

40

35