Case CX 210 Electric

8020-7

Cre 7-28490GB Issued 12-00

CM00K026

Pb9

Pa9

Pc2

Pb8

Pb8’

Pa8’

Pa8

Pb7

Pa7

Pb6

Pa6

3�33PT

3�

P4

A3

B3

Pbu

A5

Pc1

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5’

B5

PH

Pa1

Pb1

P3PA

A8

B8

A7

B7

A6

B6

Pb5

Pa5’

Pa5

Pc3’

Pc3

Pb4

Pb4’

Pb3

Pa3

A2

B2

Pb2

Pa2

A1

B1

T5T3 T4

3L� 3L�

A2

a2

A3

Dr B3B1

a3A1 Psv

a1

3.92 MPa568 psi 39.2 bar

a3

10µ

P3

P2

PP0

P1

0.103 Mpa14.5 psi 1 bar

0.02 MPa

8020-8


High Speed Travel CircuitThere are two flows of oil which supply the travel motors.

In high speed the travel motors are in low displacement position.

The travel motors have an internal circuit which enables them to change from low to high displacement whensupply pressure exceeds a certain level. If the pressure drops once more, the motors automatically revert to highspeed.

Oil from the A1 pump outlet enters the P1 port on the control valve, whereas oil from the A2 pump outlet entersP2. One flow goes directly to the left-hand travel spool and the other goes to the right-hand travel spool.

The calculator sends a current to the cylinder displacement change electrovalve for high speed to be selected.The 565 psi pilot pressure coming from the high speed electrovalve passes through the hydraulic swivel andgoes to pilot the travel motor cylinder displacement change spools.

C1. 2 stage travel (Red band)C3. Power boost (Yellow band)C5. Swing shut off (Green band)

Pa1/A1. RH forward travelPb1/B1. RH reverse travelPa6/A6. LH forward travelPb6/B6. LH reverse travel

1. Travel speed switch2. Controller3. Work mode switch

8020-9


CM00K013

Pb9

Pa9

Pc2

Pb8

Pb8’

Pa8’

Pa8

Pb7

Pa7

3E�

3D�

3�PPPT

3�

P4

A3

B3

Pbu

A5

Pc1

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5’

B5

PH

3D�

3E�

P3PA

A8

B8

A7

B7

$�

%�

Pb5

Pa5’

Pa5

Pc3’

Pc3

Pb4

Pb4’

Pb3

Pa3

A2

B2

Pb2

Pa2

$�

%�

T5T3 T4

C4

C2

P

&�

&�

&�

TB

1 , 2

CA

E FB

D

P2

P1 P2

P1

Pm2

Pm1 3V

T2

Pm1

Pm23V

T1

$� $�

1

2

3

8020-10


Low Speed Travel CircuitLow speed is the normal speed for travel. Even if the machine is in high speed, if the starter switch key is turnedOFF and then turned ON again, the speed setting will always return to low speed.

Al pump flow enters port P1 of the control valve and A2 pump flow enters port P2. One flow goes directly to theleft-hand travel spool and the other goes to the right-hand travel spool. The high speed travel electrovalve isswitched OFF and the motor displacement change spools are in direct communication with the tank return line.

C1. 2 Stage travel (Red band)C3. Power boost (Yellow band)C5. Swing shut off (Green band)

Pa1/A1. RH forward travelPb1/B1. RH reverse travelPa6/B6. LH forward travelPb6/B6. LH reverse travel


8020-11


CM00K014

Pb9

Pa9

Pc2

Pb8

Pb8’

Pa8’

Pa8

Pb7

Pa7

3E�

3D�

3�PPPT

3�

P4

A3

B3

Pbu

A5

Pc1

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5’

B5

PH

3D�

3E�

P3PA

A8

B8

A7

B7

$�

%�

Pb5

Pa5’

Pa5

Pc3’

Pc3

Pb4

Pb4’

Pb3

Pa3

A2

B2

Pb2

Pa2

$�

%�

T5T3 T4

C4

C2

P

&�

&�

&�

TB

1 , 2

CA

E FB

D

P2

P1 P2

P1

Pm2

Pm1 3V

T2

Pm1

Pm23V

T1

$� $�

1

2

3

8020-12


Straight Line Travel CircuitThis chapter considers the situation whereby travel and boom raising operations are carried out at the sametime.

When the travel function is used, the low pressure circuit is closed and the pressure switch transmits thisinformation to the control unit, which in turn powers the pressure booster electrovalve.

When boom spool 2 is piloted, the control circuit coming from PP and going through all the attachment and swingcontrol valves is closed. The pressure in this circuit then rises to 565 psi and this pilots the straight line travelvalve. When this occurs, pump P1 supplies oil to both travel motors and pump P2 supplies oil to the attachment.As oil is supplied to both travel motors in parallel the pressure is equal and the machine travels in a straight line.If all the flow to the attachment is not used, the surplus is sent to the travel function, thereby keeping speed lossto a minimum.

If other functions than the boom are used at the same time as the travel function, the operating principle is thesame.

C1. 2 stage travel (Red band)C3. Power boost (Yellow band)C5. Swing shut off (Green band)

Pa1/A1. RH Forward travelPb1/B1. RH Reverse travelPa6/A6. LH Forward travelPb6/B6. LH Reverse travel

Pb4. Boom spool 2Pa8/A8. Boom upPb8/B8. Boom down


8020-13


CM00K015

Pb9

Pa9

Pc2

3E�

Pb8’

Pa8’3D�

Pb7

Pa7

3E�

3D�

3�33PT

3�

P4

A3

B3

Pbu

A5

Pc1

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5’

B5

PH

3D�

3E�

P3PA

$�

%�

A7

B7

$�

%�

Pb5

Pa5’

Pa5

Pc3’

Pc3

3E�Pb4’

Pb3

Pa3

A2

B2

Pb2

Pa2

$�

%�

T5T3 T4

C4

C2

P

&�

&�

&�

TB

1 , 2

C

A

E FB

D

P2

P1 P2

P1

Pm2

Pm1 Ps

T2

Pm1

Pm2Ps

T1

$� $�

1

2

3

8020-14


Swing CircuitThe swing function has one source of oil supply only.

When the engine is started and the swing control is in neutral, the swing brake electrovalve is powered and thebrake is applied.

When the swing function is operated, the swing pressure switch closes. Current to the swing brake electrovalveis cut off and the swing moto-reduction gear brake is released. The upperstructure thereby becomes free to turn.When the swing control is in neutral and the attachment is operated, lateral forces are exerted on theattachment. To prevent the swing effect damaging the brake the swing brake is released.

When one of the HP pressure detectors situated on the pump outlets informs the calculator that pressure isequal to or greater than 2132 psi, current to the swing brake electrovalve is cut off and the swing brake isreleased.

When swing pressure switch or attachment pressure falls below 2932 psi, current flows to the swing brakeelectrovalve after five seconds and the swing brake is applied.

If swing locking is solicited, even if the swing pressure is closed and pressure at both pumps is higher than2132 psi, the swing brake will be applied. The swing spool is piloted on both sides. If the starter switch key isturned to OFF position, the swing locking will be memorized and when the key is turned to ON position the swingfunction will still be locked.

During travel, if pressure in one of the pumps rises to 2132 psi, the swing brake will be released for 5 seconds.

Pa3/A3. LH SwingPb3/B3. RH Swing

C2. Swing brake (Pink band)

Key switchSwing pressure

switch

Outlet pressure on A1 or A2 pump

outlets

Swing brake electrovalve

Swing brake

OFF OFF 0 OFF Applied

ON OFF 0 ON Applied

ON ON > 0 OFF Released

ON OFF 2132 psi or more OFF Released

8020-15


CM00K016

P

Dr

BA

MU

GBGA

Pb9

Pa9

Pc2

Pb8

Pb8’

Pa8’

Pa8

Pb7

Pa7

Pb6

Pa6

��PPPT��

P4

��

��

Pbu

A5

Pc1

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5’

B5

PH

Pa1

Pb1

P3PA

A8

B8

A7

B7

A6

B6

Pb5

Pa5’

Pa5

Pc3’

Pc3

Pb4

Pb4’

��

A2

B2

Pb2

Pa2

A1

B1

T5T3 T4

3SS1

2S 1S

S2

S3

C4

�

P

TB

��

8020-16


Variable Priority Valve CircuitAfter going through the selector the swing pilot pressure arrives at Pc3 and pilots the variable priority valve. Thismakes it possible to have the maximum swing torque with high swing pressure, even if the dipper is being usedat the same time.

When the machine is digging, the boom raising pressure pilots the swing priority valve. Flow for the swingfunction is then in parallel with the dipper via the priority valve and dipper speed is improved. Digging speed ismore constant, even if the free passage is closed by the boom (2) spool.

When the swing function and the dipper retracting or boom raising functions are operated simultaneously,parallel working is reduced and swing pressure is maintained.

Pa5/A5. Dipper outPb5/B5. Dipper in

Pa9/Pb9. Dipper spool 2Pa3/A3. LH swingPb3/B3. RH swing

Pc3. Priority to swingPb4. Boom spool 2

8020-17


CM00K017

P

Dr

BA

MU

GBGA

��

Pc2

Pb8

Pb8’

Pa8’

Pa8

Pb7

Pa7

Pb6

Pa6

��PPPT

��

P4

��

��

Pbu

��

Pc1

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5’

��

PH

Pa1

Pb1

P3PA

A8

B8

A7

B7

A6

B6

��Pa5’

��

Pc3’

��

�� Pb4’

��

A2

B2

Pb2

Pa2

A1

B1

T5T3 T4

3SS1

2S 1S

S2

S3

��

8020-18


Boom Raising CircuitTwo supply flows are used to raise the boom.

The P1 pump flow goes through the straight line travel valve or the right-hand travel spool, through the parallelworking passage and the boom (2) spool, before emerging from the boom (1) spool outlet.

The P2 pump flow goes through the second parallel working passage and the boom (1) spool and joins the flowfrom pump P1 to go through the load holding valve and supply oil to the boom cylinders.

Pa8/A8. Boom upPb8/B8. Boom down

Pb4. Boom spool 2

8020-19


CM00K018

Pb9

Pa9

Pc2

��Pb8’

Pa8’

��

Pb7

Pa7

Pb6

Pa6

��PPPT��

P4

A3

B3

Pbu

A5

Pc1

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5’

B5

PH

Pa1

Pb1

P3PA

��

A7

B7

A6

B6

Pb5

Pa5’

Pa5

Pc3’

Pc3

�� Pb4’

Pb3

Pa3

A2

B2

Pb2

Pa2

A1

B1

T5T3 T4

��

8020-20


Boom Lowering Circuit, Load Holding ValveA single supply flow is used to lower the boom.

When the boom lowering function is operated only the boom (1) spool is piloted.

At the same time, pilot pressure arrives at Pc2 and releases the load holding valve. This allows the oil dischargefrom the boom cylinder large chambers to flow to the return circuit.

Boom Lowering Reinjection CircuitWhen the boom is lowered, boom (1) spool is piloted. The load holding valve is released and part of the oildischarged from the cylinder large chambers can go through a check valve and be reinjected in the cylindersmall chambers. The lower the supply pressure to the cylinder small chambers, the higher the flow reinjected inthis manner will be.

Even if the boom spool is completely closed, an orifice makes it possible for oil to reach the free passage anddevelop pressure (PN) to inform the pump that flow must be reduced. Flow reduction is compensated for by thereinjection circuit, thereby contributing towards a more efficient use of engine power.

Boom Lowering Anti-vibration CircuitDue to the constant loss of oil from the supply source to the free passage, via the orifice, peak pressures andvibrations are avoided, even if the boom lowering control is operated roughly.

Pa8/A8. Boom upPb8/B8. Boom down

Pc2. Boom load holding1. Holding valve

8020-21


CM00K019

Pb9

Pa9

��

��

Pa8’

��

Pb7

Pa7

Pb6

Pa6

��

T1T2Dr Ps2

405 psi28 bar

PHP3

��

A7

B7

A6

B6

ø 3

T5T3 T4

Pi1 Pi2

A2

a2

(AVANT) (ARRIERE)

A3

Dr B3B1

a3A1 Psv

a1

M

3.92 MPa568 psi 39.2 bar

a3

��

��

��

��

��

1

8020-22


Dipper Extending CircuitThe dipper uses two supply flows.

When the dipper extends, flow from pump A1 arrives at the dipper (1) spool, either via the free passage or afterpassing through the straight line travel valve via the parallel working passage.

Flow from pump A2 arrives at the dipper (2) spool, either via the free passage or after passing through thestraight line travel valve via the parallel working passage. It merges with the other flow just before the dipper (1)spool. In this way, the two flows of oil go through the load holding valve and then on to the dipper cylinder smallchamber. Return to the large chamber is via the two dipper spools, thereby improving efficiency.

Pa5/A5. Dipper outPb5/B5. Dipper inPa9/A9. Dipper spool 2

8020-23


CM00K020

��

��

Pc2

Pb8

Pb8’

Pa8’

Pa8

Pb7

Pa7

Pb6

Pa6

��PPPT��

P4

A3

B3

Pbu

��

Pc1

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5’

��

PH

Pa1

Pb1

P3PA

A8

B8

A7

B7

A6

B6

��Pa5’

��

Pc3’

Pc3

Pb4

Pb4’

Pb3

Pa3

A2

B2

Pb2

Pa2

A1

B1

ø 3

T5T3 T4

��

8020-24


Dipper Retracting CircuitThe dipper uses two supply flows.

When the dipper retracts flow from pump A1 arrives at the dipper (1) spool, either via the free passage or afterpassing through the straight line travel valve via the parallel working passage.

A2 pump flow arrives at the dipper (2) spool, either via the free passage or after passing through the straight linetravel valve via the parallel working passage. It merges with the other flow just before the dipper (1) spool. In thisway, the two flows of oil go through the load holding valve and then on to the dipper cylinder large chamber.Return to the large chamber is via the two dipper spools, thereby improving efficiency.

Dipper Retracting Reinjection CircuitOil discharging from the small chamber is fed back into the large chamber. The return flow goes through arestrictor and a variable cancellation valve, which force the oil to re-enter the large chamber via a check valve.

When pressure in the large chamber increases, the cancellation valve is piloted by this pressure and reinjectionis progressively brought to a halt.

Pa5/A5. Dipper outPb5/B5. Dipper in

Pa9/Pb9. Dipper spool 2

8020-25


CM00K021

��

��

Pc2

Pb8

Pb8’

Pa8’

Pa8

Pb7

Pa7

Pb6

Pa6

��PPPT��

P4

A3

B3

Pbu

��

��

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5’

��

PH

Pa1

Pb1

P3PA

A8

B8

A7

B7

A6

B6

��Pa5’

��

Pc3’

Pc3

Pb4

Pb4’

Pb3

Pa3

A2

B2

Pb2

Pa2

A1

B1

ø 3

T5T3 T4

��

8020-26


Bucket Opening CircuitThe bucket uses one supply flow which arrives from pump A2 via the parallel working passage.

Pa7/A7. Bucket openingPb7/B7. Bucket closing

CM00K022

Pb9

Pa9

Pc2

Pb8

Pb8’

Pa8’

Pa8

��

Pb6

Pa6

��

T1T2Dr Ps2

405 psi28 bar

PHP3

A8

B8

��

A6

B6

ø 3

T5T3 T4

��

8020-27


Bucket Closing CircuitThe bucket uses one supply flow which arrives from pump A2 via the parallel working passage.

Pa7/A7. Bucket openingPb7/B7. Bucket closing

CM00K023

Pb9

Pa9

Pc2

Pb8

Pb8’

Pa8’

Pa8

��

Pb6

Pa6

��

T1T2Dr Ps2

405 psi28 bar

PHP3

A8

B8

��

��

A6

B6

ø 3

T5T3 T4

��

8020-28


Crusher CircuitThe crusher uses two supply flows.

One flow goes directly to the option, the other is forced into the reinjection valve and merges with the first flowjust before the inlet for the option spool.

When the switch in the cab is tilted to crusher position, current is sent to the second flow electrovalve.

When the option pedal is pressed, pilot pressure is sent through the selector and then the electrovalve. Thereinjection valve is released. This pressure also moves the dipper (2) spool and the latter seals off the freepassage. As a result, flow from pump P2 may be reinjected at the inlet for the option pedal.

P1 pump flow arrives directly at the inlet of the option spool.

The pilot pressure also acts on the reinjection valve priority valve. Dipper (2) spool pilot pressure return oil goesback to the tank via the priority valve. The crusher thereby takes priority but, for example, should the dipper beextended at the same time, one flow goes to the dipper and the other to the crusher.

Pa2/A2. Option circuitPb2/B2. Option circuit

Pa9/Pb9. Dipper spool 2

8020-29


CM00K024

10µ

A

C

B

D

T T

3E�

3D�

Pc2

Pb8

Pb8'

Pa8'

Pa8

Pb7

Pa7

Pb6

Pa6

3�PPPT

3�

P4

A3

B3

Pbu

A5

Pc1

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5'

B5

PH

Pa1

Pb1

P3PA

A8

B8

A7

B7

A6

B6

Pb5

Pa5'

Pa5

Pc3'

Pc3

Pb4

Pb4'

Pb3

Pa3

$�%�

3E�

3D�

A1

B1

T5T3 T4

A

B

T

P

C

E

D

1 2

P

T

A1 S1

B1 S2 B2

A2 P T

A

A B

$� $�

8020-30


Breaker CircuitThe breaker uses one supply flow.

When the switch in the cab is in breaker position and the option pedal toed forward, the pressure switch closesand sends the information to the calculator, which sets the breaker running at the preselected speed.

The option spool is piloted and pump A1 supplies the breaker with a flow of oil.

Pa2/A2. Option circuitPb2/B2. Option circuit

8020-31


CM00K025

10µ

A

C

B

D

T T

Pb9

Pa9

Pc2

Pb8

Pb8'

Pa8'

Pa8

Pb7

Pa7

Pb6

Pa6

3�PPPT

3�

P4

A3

B3

Pbu

A5

Pc1

Ps1 T1T2Dr Ps2

405 psi28 bar

405 psi28 bar

Pb5'

B5

PH

Pa1

Pb1

P3PA

A8

B8

A7

B7

A6

B6

Pb5

Pa5'

Pa5

Pc3'

Pc3

Pb4

Pb4'

Pb3

Pa3

$�

%�

3E�

3D�

A1

B1

T5T3 T4

A

B

T

P

C

E

D

1 2

P

T

A1 S1

B1 S2 B2

A2 P T

A

A B

$� $�

8020-32


NOTES .....................................................................................................................................................................................

.....................................................................................................................................................................................

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.....................................................................................................................................................................................

9010-17

Cre 9-93770EN Issued 07-05

CRIL05G058J01

9010-18


With hydraulic hammer/grab installationNOTE: For a complete view of the hydraulic diagram of the excavator, refer to the main hydraulic diagram.

15 MAIN CONTROL VALVE72 ARTICULATION CYLINDER CONTROL PEDAL79 SHUTTLE BALL BLOCK87 ARTICULATION CYLINDER88 ARTICULATION CYLINDER SAFETY VALVE89 OPTION SECTION90 DIPPER SECTION (2)104 2-WAY VALVES211 2-WAY VALVES308 PRESSURE LIMITER (OPTIONAL)309 FILTER (OPTIONAL)310 6-WAY SELECTOR (OPTIONAL)311 6-WAY SELECTOR (OPTIONAL)312 3/2 SELECTOR (OPTIONAL)380 2-WAY SOLENOID VALVE (OPTIONAL)384 NON-RETURN CHECK VALVE (OPTIONAL)393 SELECTOR (OPTIONAL)B23 BREAKER/GRAB PILOT PRESSURE SWITCHT1 FREE BOSS ON THE RETURN PIPE OF THE MAIN CONTROL VALVE TO THE RESERVOIRT2 T-PIECE RETURN BEHIND THE CABA LOW FLOW SUPPLY (IF EQUIPPED)B WITH LOW FLOW CONTROL (IF EQUIPPED)C LOW FLOW SELECTOR (IF EQUIPPED)

9010-19


CRIL05G059J01

9010-20


F8 F16 F15 F18 F3 F13 F7 F9 F2 F1 F10 F19 F17 F14 F5 F6 F4 F20 F11 F1215A 15A 15A 15A 20A 20A 20A 30A 20A 20A 10A 10A 10A 5A 15A 10A 10A 15A 10A 10A

1.25 YR 2081.25 W 2091.25 R 206

BR 207

RW

220

R 2

21

R 2

23 R 2

22

0.65

GR

231

OW

303

OW

300

1.25

GR

312

1.25

GR

310

1.25

W 3

20

2 W

R 0

50

1.25

GrR

330

1.25

LW

340

1.25

LgR

350

0.85

BrR

360

0.85

VR

370

0.85

OR

375

0.85

LR

380

0.85

LR

381

BrR 547

WR 548

0.85

YR

260

0.85

OR

375

1.25

W 3

221.

25 W

325

0.65

BrW

230

VR

240

LR25

0

VW

280

GW

290

0.85

YR

260

0.85

YW

270

2B

703

GW

303

112

X5

P2

P3

CN 29

12

CN

32

CN

5C

N 6

CN

1

2

1

5V

CN 5

PWM

PWMD/A8 BIT

A/O10 BIT

I/O

I/O

RAM - 2 K BYTE

EPROM8 K BYTE

FLASHMEMORY2 M BYTE

119 10321

16141312 157 854 6

CN 6

2927 28191817

34323130 3323 24 25 262120 22

5

YR 940BY 941

YW 802

1314

15

87

166

1.25 LgR 3501.25 LgR 351

1.25 BG 6001.25 BG 501

10

124

9

113

1

21.25 W 3201.25 W 321

10

18

7

1112

15

1716

14

20

19

13

IGN

B+

TXDRXD

1

4

3

6

98

5

2

22

21

CN

3

42

PG 581P 580

WG 446LY 444

29

37

4344

47

4048

46

30

39

45

0.85 VG 469

YG 443

G 464

31

34

33

36

4138

35

32

BrG 460

3635

CN

P0

1311

123

21

1816

1514

177

89

105

46

2019

2221

CN 13

1311 12321

18161514 177 8 9

10

54 6

2019

CN

14

CN

31

1311

123

21

147

89

10

54

6

CN

P3

CN

10

CN 15CN 18

18813

1516

1714

43

21

67

511

129

10

CN

25 CN

27

CN 63 CN 62

64

51

87

32

64

51

87

32

CN 116

4

51

8 97

32

64

51

32

2

0.85 WG 417LgR 542

BrR 543

114

7

816

125

0.85 BO 4250.85 OL 415

0.85 WY 4000.85 WL 410

6

1514

1

109

3

130.85 GL 413

0.85 YL 4110.85 L 412

0.85 BW 420

CN

2

26

241718

PG 586P 585

WR 571PW 583TXDSCI

COUNTER

SCI

RXD

23

2021

22

1925

28

27

BP 587LG 570

PL 584

CPU

1/4

RS 232 C

CAN

TXDRXD

10V

5V

5V

5V

CN

4

57

BrY 432LG 430

BrG 441G 450

WG 4485859

62

6463

6160

LgY 436

OG 442

49

5251

54

5655

53

50YG 431VG 534

LY 435VY 440

GrG 437

1K 100K 1K

CN 1

119 10321

16141312 157 854 6

11

9

10

32

1

1614

1312

1518

17

78

54

6

CN 4

5957 58515049

64626160 6355 565352 54

CN 2

2523 24191817

2827262120 22

CN 3

4139 40313029

46444342 4535 36 37 383332 34

4847

CN A0 CN A1 CN 7 CN 8

CN 16 CN 17 CN 35

1412 13321

19171615

25 2726

186 7

30

84 521

922

1023

112420

2928 3130

7068 69 75737271

8180 82

74

88

77 78 7976

6058 59 646261 63 65 66 67

8584 86 8783

4341 42 48464544

5251 5453

47 5049

33 34 38373635 4039

5655 57

9694 95 999897

102101 104

100

89 90 939291

CN A0

16 18 19 24 262523212 76 12 141383 31

L 49

6

0.85

YG

506

1.25

GR

312

680

681

1.25

GR

313

9 10 22 3227201128 41 30 1751529O

R 5

06Y

486

O 4

87W

497

0.85

YL

465

0.85

LG

507

0.85

BP

494

1.25

B 7

30

CN A1

45 43 53 38 5548443539 5133 52 36345442 55

1.25

RG

950

0.85

WY

472

0.85

WL4

820.

85 W

G 4

73

5737 4140 47 504946

1.25

B 7

31

BL

782

1.25

LG

952

1.25

BrB

951

1.25

GrB

953

0.85

BW

492

0.85

GR

954

0.85

BG

955

P 5

80P

G 5

81

YL

488

BY

498

CN 7

77 78 79 87 6759858488 6664 71 75726963 83

GrR

504

0.85

BrY

575

BW

505

BP

509

BrR

501

86 70 75 58688182 6160 62 74736580Lg

R 5

03Lg

R 5

02

0.85

L 4

810.

85 L

480

0.85

PL

484

0.85

BL

490

BY

500

0.85

LY

470

CN 8

97 98 99 102

104

103

101

10089 9190 93 96959294

VG

576

P 5

88

1.25

GR

310

0.85

GR

311

0.85

BG

631

1.25

BG

630

103

BY 500

BW 505BP 509

0.85 PL 484

1.25

BG

630

1.25

BG

600

S2S3S4

S5S6

S7S8S9S10S11S12

P5

H1

M5 M6 M7

M8

P4FPC

10YG 443

VR 523

LY 444

GrR 520

PW 583PL 584

BrR 501

WR 531

BrW 5451.25 BG 602

18

7

1112

15

1716

14

20

19

13

LR 521YR 522

R 221

OG 442

VG 534

BrG 441

1.25 W 322

VY 440

WG 446

YG

VR

LY

GrR

PWPL

BrR (BrY)

WR

BrW (BrR)1.25 BG

LRYR

R

OG (GY)

VG

BrG

1.25 W

VY

WG (OG)

YG

VR

LY

GrR

PWPL

BrR (BrY)

WR

BrW (BrR)1.25 BG

LRYR

R

OG (GY)

VG

BrG

1.25 W

VY

WG (OG)

IGN

B+

TXDRXD

1

4

3

6

98

5

2

11

VW

GrR

0.85 BrR

LRYR

BW

WV

1.25 B

VW

GRGW

VR

VR

GRGW

7

1213

1

910

3

4

8

2

1.25 B

6

5

1

VR

LW

WRVW

BL

BG (B)

BG

(B)

23

6

87

5

4

BY

VR

LW (SPK: L+)

VW

BL (SPK: L-)

BG (B)

YW (SPK: R+)BY (SPK: R-)

WR

WR

7

BG 620

BP 587

LG 570

VG 576

P 585

PG 586

1.25 W 325

WR 5711

4

3

6

8

5

2

18 49 2 763

1

32

5

5V4.7K

WG 448

B G 604

BP 633

P 588BP 632

0.85 BrY 575

BrR 840

B 7

10

R 2

22LW

972

BL

973

YW

970

BY

971

BP 690

BrG 460

S13

X4 E3

W1

X8

X9

A4

E4

A1

P1

A2

12

3

CN

P9

12

3

CN

P71

23

CN

P10

1 2

CN

P5

1 2

CN

P6

CN

P2

1 2

CN

P4

1 2

CN 50

CN 54

CN 55123

CN

60

S51

R3

E52

S1

S15

12

CN

12

CN

2B

32

1

78

54

6

CN

51

12

109

65

87

CN

19

34

12

65

910

1112

138

7

34

12

CN

P1

12

CN

P8

12

0.85 VG 469 0.85 BG 621

32

1

32

1S14

WR

391

OFF

ON

HEAT

ACC

START

OFFHEAT

ACCON

STST

CONNECTION

G2B G1 Acc M

2 YR 830VR 2401 2

LW 532

B 7131

CN 53

VW 842

B 714

34

2 31 4

0.85

L 4

800.

85 B

L 49

0

0.85

LY

470

0.85

LY

470

LgR

540

WR

390

GrR

010

RW

220

0.85

L0.

85 B

0.85

Y3 2 1

3 2 1

S16

B61

P6

2

G 450

BG 6031

CN 53

VR 841

B 711

34

2 31 4

F21

X3

GR 231

B 716

2B

717

0.85

GR

291

1

21

1 2

1

2

X6

4 2 35 6 1

CN 52

2 315 64

M

OR OR

BG (B)

1

2

90.85 GR 567

1.25 B 701

1.25 LW 340

18

14

81

11

1312

10

2

0.85 YW 270

PL 562

WR 590

4

7

6

15

317

16

5

1

2

PW 563

VR 524GY 566

VW 525YR 560BY 561

1

212

12

3BG (B)

VW

BG (B)

VW

70W

24V

BYR YW

1

2

BLL LW

24V

1

2

M M M

M PWM

BW 565

WL 564

R4

150.85 BL 490

BG 603

0.85 GR 231

14

6

1718

11

1312

10

9

B 711

WR 390

0.85 L 480

1

4

3

16

87

5

2RW 220

VR 8410.85 LY 470

G 450GrR 010

LgR 540

0.85 BL 490

BG 603

0.85 GR 231B 711

WR 390

0.85 L 480

RW 220

VR 8410.85 LY 470

G 450GrR 010

LgR 540

6

BW 565

4

1

8

3

5

2

7

PW 563WL 564

PL 562BY 561YR 560

BW 565

PW 563WL 564

PL 562BY 561YR 560

10

7

1

4

3

6

98

5

2

BP 690BG 604

YR 830

B 713

VR 240

WG 448LW 532

VW 642BrR 840

BrG 460

BP 690BG 604

YR 830

B 713

VR 240

WG 448

LW 532

BrG 461

BG 604BP 690

BrG 460

B 7

10

830, 840, 842

222, 391, 710, 970, 971, 972, 973

VW 642BrR 840

BrG 460

LgR

542

LgR

540W

R 3

90 WR

391

WR

391

603,

604

GrR

010

LgR

502

LgR

503

GrR

504

240, 448

24V - 10W

S53

S54

M3

U1

K1 K2

Y2

G2

M1

R1

B21

B1

R2

B41

A3

F22

F23 F24 F25

Y3

Y4

Y5

Y6

Y1

K3 K4 K5

BR 207 BR 207

CN

20

1 2

CN C1

1

2

CN C3

1

2

CN C4

1

2

CN C2

1

2

CN C0

1

12

6

1412

11

12

3

13

LR

0.85 OR

GrR

VR

YR

WRVW

0.85 BrR

8

109

7BLLW

BYYW

54

BWWV

LR 521

0.85 OR 892

GrR 520

VR 523

VR

524

BrR

530

BP

690

206,

208

, 209

206, 208, 209

YR 522

WR 390VW 525

0.85 BrR 360

BL 973LW 972

BY 971YW 970

BW 720WV 730

CN

22

1311

123

21

147

89

10

54

6

1

23

6

87

5

4

WR 541

YR 630

LgR 540

BrR 543

GrR 010

VR 900VW 800

1.25 R 206

10

1211

9OR 505

0.85 LW 9110.85 L 910

1413

0.85 LR 3800.85 LY 912

WR 541

YR 630

LgR 540

BrR 543

GrR 010

VR 900VW 800

1.25 R 206

OR 505

0.85 LW 9110.85 L 910

0.85 LR 3800.85 LY 912

123

BG (B)

VR

CN

70

64

51

732

CN

9

64

51

32

CN

21

6

4

58

71

32

CN

26

64

51

32

6

25

47

3

1

B 702

0.85 BY 729

R 223

0.85 RW 282

0.85 YR 281

VW 280

B 702

R 223VW 280

B 702

R 223VW 280

CN

301

23

123

13

65

24

3 54

1 2

25 1 43

34

1 25

25 1 43

0.85

VR

370

0.85

VR

371

WR

531

GW

290

250,

290

, 370

, 534

461,

470

480,

490

501,

502

503,

504

GW

291

LW 5

32

LR 9

00

0.85

GR

890

LR 2

50P

W 8

19B

728

GrR

893

0.85

LgR

891

0.85

GR

667

0.85

OR

892

3 54

1 2

25 1 43

3 54

1 2

25 1 43

34

1 25

25 1 43

0.85

L 9

10

0.85

LR

381

BrR

530

0.85

LY

812

0.85

LW

811

2 W

R 0

50

2 W

R 0

51O

R 5

06

2 LR

060

LR 901

060, 506, 910, 911, 912050, 361, 530

531, 532, 567, 890�891, 892, 893, 900, 901

WV 931

BW 721

WV

931

BW

721

12

2

1

CN

D6

0.85 L 9130.85 B 751

12

2

1

B 7286

B 713B 715

B 710

1.25 B 700

1.25 BG 602BG 603

B 703B 703602, 603, 604

BG 604

B 71132

1

54

0.85 BrW 230 B 715

B 7

021.

25 B

701

B 7

02

710,

711

719,

715

, 728

1.25

B 7

01

6

BrW 545

BrW

545

BrR

547

BrR

547

BrR 544

BrR

544

32

1

54

603,

604

1

2

1

2

1

2

1

2

1

2

1

2

1

2

3

6

87

5

4

2 LR 060

BP 690

1.25 YR 208

1.25 GR 312

1.25 GrR 330

1.25 BG 6001.25 B 700

1.25 WR 209

2 LR 060

BP 690

1.25 YR 208

1.25 GR 312

1.25

B 7

311.

25 B

730

B 7

55

1.25 GrR 330

2 BG 6002 B 700

1.25 WR 209

B 765

BrW 804

B 761

LW 801

YW 802

B 763

B 764

LgW 803

B 762

B 765

B 761

B 7

63

B 764

B 762

YR 830

B 760

2 LR 050

BP 690

B 7

60

0.85

BG

660

BG

641

BG

652

BG

640

B 7

63

OW

301

GN

D(G

2)

B 7

60

VW 800

60 R 001

BR 207

1

23

6

87

5

4

LgW 803

BrR 840

YW 802

WV 930

BrW 804

VW 842VR 841

LW 801

10

1211

9BW 720

0.85 LgR 8910.85 GR 890

1413

WR 980LR 901

1615

GrR 893OW 300

1817

BY 941YR 940

LgW 803

BrR 840

YW 802

WV 930

BrW 804

LW 801

B 763

B 760

M6

BW 720

0.85 LgR 8910.85 GR 890

WR 980LR 901

GrR 893OW 300

BY 941YR 940

1

23

6

87

5

4

BrY 432

0.85 WY 400

YG 431

0.85 L 412

LY 435

0.85 YL 4110.85 WL 410

LG 430

10

1211

90.85 W 420

GrG 437LgY 436

1413BrG 461

1615

0.85 OL 4150.85 GL 413

18170.85 BO 425

20190.85 PL 484

2221

PG 581P 580

BrY 432

0.85 WY 400

YG 431

0.85 L 412

LY 435

0.85 YL 4110.85 WL 410

LG 430

0.85 W 420

GrG 437LgY 436

BrG 461G 464 G 464

0.85 OL 4150.85 GL 413

0.85 BO 425

0.85 PL 4840.85 WG 417 0.85 WG 417

PG 581P 580

1.25 R 206

60 R 200

M10

60 B

799

M10-

12V

24V

M10+

60 R 201

2 B 700

BG 650

BG 651

B 779

B 7

79

B 7

79

2 BG 800

2 B

700

2 B

G 8

00

BP 690

BW 630

8 R 100 8 R 100

WV 930

1.25 RW 202

-M10

MBNB

M8

M8 GND(GI)

M4

+

1.25 LR 204

BR 203

1.25 GR 205

LgR 540

WR 541

1.25 YR 208

1.25 LR 204

1.25 WR 209

1.25 GR 205

12V

M21

K7

G1

M4

G1

1

1

2

12 12 12

CN

B4

CN

E0

CN

E2

CN

E1

CN

E3

CN

E4

CN

E5

12

CN

B5

12

1

60 B 001

CN12 (R)

LG 430

BG 651

YG 431

BG 650

GrG 437

BG 641

0.85 GL 413

0.85 BG 660

0.85 OL 415

0.85 BO 425

BrY 432

BrY 432

BG 652

BG

652

t C

B26

B27

B22

Y8

S52

21

21

21

1

2

1

2

1

2

1

1

2WR 980

W 981

CN

B0 2

1

CN

B8

21

CN

B3

21

CN

D3

21

CN

C0

CN

C5

CN

C6

W 981

CN

C8

1

1

2

1

2

1

2

1

2

Y7X1

E2

E1

B81 B81

X2

21

CN

D4

21

CN

B2

21

CN

A8

21

CN

A7

21

CN

A5

21

CN

D7

21

CN

C9

BY 941

YR 940

BY 941

YR 940

CN

D6 6

45

13

2

0.85 LY 912

0.85 LW 911

0.85 B 750

0.85 B 751

0.85 LR 380

0.85 L 910

B

LW

LRLY

L1

25

36

4

CN

A3

CN

A4

64

51

32

21

0.85 GR 890

LR 900

B 753

0.85 B 740

0.85 GR 890

1.25 B 740

1.25 B 740

0.85 B 741

0.85 LgR 89124V

70W

M

70W

24V

1.25 GrR 3302 B 7002 BG 600 2

BG

600

LR 901

2 B

700

B 7

53B

754

2 B

700

2 B

G 6

00B

779

2 B

700

2 B

G 6

00B

779

2 B

700

LR 901

B 754

24V. 370 HZ. 111dB

24V. 370 HZ. 111dB

GrR 893

B 755

0.85 WG 473

0.85 LG 507

1.25 GrB 953

0.85 BW 492

0.85 BG 465

1.25 LG 952 1

42

65

3

M2

CN

R0 3

21

123

0.85 WG 417

0.85 LY 407

0.85 BG 4270.85 WG 417

650, 651, 652650, 651 0.85 LY 407

0.85 BG 427

12

12

3

123

0.85 L 412

0.85 LY 402

0.85 BL 422

123

0.85 Y 401

123

0.85 WL 410

0.85 WY 400

0.85 BW 420

CN

R1

B45

S55

B43

B44

B42

R5

B2

32

1

CN

D2

32

1

CN

D1

32

1

123

0.85 YL 4110.85 BY 421

1

CN

D0

32

1

5 B 796

M8M6

O 487

W 497

YL 488

BY 498

0.85 BP 494

0.85 PL 484

LgY 438

BG 640

t C

M10

M4

CN

A2

6

4

58

71

32

1

23

6

8

7

5

4

0.85 GR 954

0.85 YG 508

1.25 BrB 951

0.85 WY 472

0.85 WL 482

L 496

Y 486

1.25 RG 950

2 LR 060

B 719

BrR 030LgR 020 1

2

R

L

B

E

M5

M5

SG

M

24V 40A

140

60 R 001

010,

543

WR

541

LgR

540

0.85 BrR 543

0.85 GrR 010

B

S

R

M10

1

2

1

2

1

2

1

2

123

12

3

RED

4

1.25

BG

800

430,

431

, 432

, 433

, 435

436,

437

, 440

, 580

, 581

1.25

BG

800

1.25

BG

800

1.25

BG

800

E51

650,

651

, 652

641,

650

, 651

, 652

1.25 B 740

B 779

010, 540, 541, 543

CN

24

1311

123

21

1816

1514

177

89

105

46

2019

2221

CN

23

1311

123

21

1816

1514

1778

910

54

6

CN

B1 6

45

13

2

1

1

2

2

1

2

B25

B23

21

CN

G1

21

CN G2

21

CN

G0

1

23

6

5

4

BG 655

BrR 840

LY 435

BrG 461

BG 655

LY 435

BG 655

LY 435

B24

Y9

21

CN

M0

21

CN G2

BG 656

G 464

21

21

BG

656

BG

656

G 4

64

1

2

B28

21

CN

M1

BG 667

G 465

BG 655

LY 435

BrG 461G 464

OW 300

BG 655

BrR 840

LY 435BrG 461

OW 300

BG 655

BrR 840G 464

LY 435

OW 300

BrR 840

OW 300

G 464

1

23

65

4

G 464

B

W

Br

P

V

G

O

R

Y

Lg

Sb

L

Gr

YW

CN

6

29LW 801

BrW 804

WR 541WR 548

LgW 803

24

3031

2336

20

33342535

26

32

GY 566

24VB

PW 819

VW 800

17

21

19

2827

22

18

5 V24 V

CX210 - CX230 - CX240 - CX290 EXCAVATORELECTRICAL SCHEMATICPart Number 7-27623

NOT USED

NOT USED

CCW

CW

NOT USED

SPARE 3 (PNP)

2 STAGE TRAVEL

SWING BRAKE

SPARE 1 (PNP)

ROTARY LIGHT

NOT USED

BATT. RELAY

CUSHION CONTROL

SWING SHUT OFF

AUDIBLE ALARM

SPARE 2 (PNP)

NOT USED

GND

NOT USED

PWM 2 OUT

2 STAGE RELIEF

PWM 2 RET

GND

GND

GND

POWER 24V

PWM 1 OUT

GND

GND

CONTROL 24V

PWM 1 RET

NOT USED

A/C CONT.

NOT USED

GND

GND

FPC

TEST

NOT USED

NOT USED

NOT USED

CAN H

NOT USED

AUDIBLE ALARM CUT OUT

IMMOBILIZER

NOT USED

NOT USED

CUSHION CONTROL

BREAKER MODE

NOT USED

NOT USED

NOT USED

PRESSURE SWITCH

SWING BRAKE

NOT USED

CAN L

CAN GROUND

GROUND

SW. TO ACCESS

SERIAL OUTPUT

PROTECT

SPARE 13 (CMP)

GROUND

SERIAL INPUT

TA INPUT

RX

TX

SG

TA GND

COOLANT

SWING PILOT

UPPER PILOT

TRAVEL MODE

ONE-TOUCH IDLE

L/M MODE

BREAKER PILOT

AUTO MODE

ENGINE OIL PRESSURE

WARNING CHG.

WORK MODE

SPARE 22

TRAVEL PILOT

SPARE 21

ROTARY LIGHT

SPARE 23

TF

SE

NS

OR

(S

IG)

LIM

P H

OM

E (

RE

D 4

)

PS

(G

E)

PW

R G

ND

TA

CH

O S

EN

SO

R (

GN

D)

RP

M S

EN

SO

R (

SIG

)

NV

VB

RP

M S

EN

SO

R (

GN

D)

PU

LL D

OW

N (

RE

D 4

)

HE

AT

RE

LAY

TA

CH

O S

EN

SO

R (

SIG

)

PS

(G

E)

PW

R V

B

SIG

GN

D (

RE

D 4

)

PW

M S

OLL

(R

ED

4)

VB

B (

RE

D 4

)

PW

M S

OLL

(R

ED

4)

VB

B (

RE

D 4

)

SH

LD (

RE

D 4

)

5V (

RE

D 4

)

GN

D (

RE

D 4

)

5V (

RE

D 4

)

GN

D (

RE

D 4

)

GN

D (

MV

)

V 1

ST

(R

ED

4)

CA

N-L

Q A

DJU

ST

RE

S.

Q A

DJU

ST

RE

S.

CA

N G

ND

CA

N-H

NA

P S

ELE

CT

-3

TW

SE

NS

OR

(S

IG)

CA

N U

SE

SE

LEC

TIN

G S

WIT

CH

ST

AR

T S

WIT

CH

AC

CE

L V

OLU

ME

(5V

)

TH

RO

TT

LE (

SIG

)

TH

RO

TT

LE (

SIG

)

NA

P S

ELE

CT

-1

TH

RO

TT

LE (

GN

D)

NA

P S

ELE

CT

-0

KE

Y S

WIT

CH

KE

Y S

WIT

CH

EN

GIN

E S

TO

P S

IG IN

LIM

P H

OM

E S

W.

AN

TI-

RE

VE

RS

E S

W

ME

MO

RY

CLE

AR

NA

P S

ELE

CT

-2

GN

D

GN

D

EN

GIN

E S

TO

P M

OT

OR

TE

CH

2 (

RX

D)

MA

IN P

OW

ER

(V

B)

CH

EC

KE

R S

ELE

CT

MA

IN P

OW

ER

(V

B)

TE

CH

2 (

TX

D)

VCC

POWER GND

SIG GND

PWM

VB

LIMP HOME

PWM

PULL DOWN

POWER GND

VCC

RACK 1ST

TACHO SENSOR (GND)

TACHO SENSOR (SIG)

VB

ITEM DESCRIPTION

CONNECTORLETTER LOCATED(OUTSIDE CAB)

COLOR OF CONNECTOR(IF NOT INDICATED COLOR IS WHITE)

TABLE OF COLOR SYMBOLS

CIRCUIT NUMBER

SYMBOL

COLORAREA

INDICATES CONSTANT POWER

INDICATES POWER WHEN KEY SWITCH IS ON

CONNECTOR (MALE)

CONNECTED

BOOT GROUND

CONNECTOR (FEMALE)

NOT CONNECTED

SINGLE WIRE CONNECTOR

CONNECTOR NUMBER(IN CAB)

INSULATION AGAINST MAGNETISM

CABLE GROUND

HARNESS

NOTE :

1. "BR" INDICATES BLACK CABLE WITH RED STRIPE.

2. WATERPROOF CONNECTORS USED OUTSIDE OF CAB.

LEGEND

COLOR

BLACK

WHITE

BROWN

PINK

VIOLET

GREEN

ORANGE

RED

YELLOW

LIGHT GREEN

SKY BLUE

BLUE

GRAY

A GND

PRESSURE SENSOR (HBCV)

KEY SW.

BATT. CHARGE

SPARE 12 (CMP)

A VCC

P2 SIG

P1 SIG

THERMO SENSOR (0)

SPARE 9 (A/D)

N1 SIG

A VCC

FUEL SENSOR

A GND

SPARE 11 (A/D)

PRESSURE SWITCH

GN

D (

TW

& T

F S

EN

SO

R)

GND

PROTECT

PROTECT

FILTER

A1. COMPUTER

A2. ENGINE CONTROLLER

A3. ELECTRONIC ACCELERATION

A4. WIPER CONTROLLER

B1. COOLANT TEMPERATURE SENSOR

B2. HYDRAULIC OIL TEMPERATURE SENSOR

B21. ENGINE OIL PRESSURE SWITCH

B22. SWING PILOT PRESSURE SWITCH

B23. BREAKER / CRUSHER PILOT PRESSURE SWITCH

B24. SECOND OPTION PILOT CIRCUIT 2 PRESSURE SWITCH

B25. BREAKER PILOT PRESSURE SWITCH

B26. UPPER PILOT PRESSURE SWITCH (YELLOW BAND)

B27. TRAVEL PILOT PRESSURE SWITCH

B28. SECOND OPTION PILOT CIRCUIT 1 PRESSURE SWITCH

B41. ENGINE RPM SENSOR

B42. PUMP PRESSURE SENSOR (P1)

B43. PRESSURE SENSOR (NEGA-CONT)

B44. PUMP PRESSURE SENSOR (P2) (YELLOW BAND)

B45. OVERLOAD INDICATOR PRESSURE SWITCH

B61. SUNLOAD SENSOR

B81. HORN

E1. WORKING LIGHT (UPPERSTRUCTURE)

E2. WORKING LIGHT (ATTACHMENT)

E3. WORKING LIGHT (CAB)

E4. CAB LIGHT

E51. CIGARETTE LIGHTER

E52. AIR CONDITIONER

F1. FUSE 20A; ENGINE CONTROLLER

F10. FUSE 10A; OPTION LINE AND LUBRICATOR CONNECTOR

F11. FUSE 10A; BACK-UP

F12. FUSE 10A; KEY SWITCH

F13. FUSE 20A; HEATER / AIR CONDITIONER

F14. FUSE 5A; AIR CONDITIONER COMPRESSOR

F15. FUSE 15A; WORKING LIGHT

F16. FUSE 15A; WORKING LIGHT (NOT USED)

F17. FUSE 10A; DC-DC (24V-12V) CONVERTER

F18. FUSE 15A; WIPER AND WASHER

F19. FUSE 10A; HORN

F2. FUSE 20A; COMPUTER CONTROL INSTRUMENT PANEL AND DIAGNOSTIC TEST SOCKET

F20. FUSE 15A; CIGARETTE LIGHTER AND CAB SEAT COMPRESSOR ADJUSTMENT

F21. FUSE BOX

F22. FUSE 20A; MAIN FUSE FOR F11 AND F12 CIRCUITS

F23. FUSE 65A; MAIN FUSE FOR F3 TO F10 AND F13 TO F20 CIRCUITS

F24. FUSE 20A; MAIN FUSE FOR F2 CIRCUIT

F25. FUSE 20A; MAIN FUSE FOR F1 CIRCUITS

F3. FUSE 20A; COMPUTER POWER

F4. FUSE 10A; HYDRAULIC FUNCTION CANCELLATION LEVER SWITCH

F5. FUSE 15A; LUBRICATOR (NOT USED)

F6. FUSE 10A; ROTARY LIGHT

F7. FUSE 20A; FUEL FILLER PUMP

F8. FUSE 15A; ENGINE STOP MOTOR

F9. FUSE 30A; GLOW PLUG

G1. BATTERY

G2. ALTERNATOR

H1. AUDIBLE WARNING DEVICE

K1. RELAY-ENGINE EMERGENCY STOP

K2. RELAY-GLOW PLUG

K3. RELAY-HORN

K4. RELAY-WORKING LIGHT

K5. RELAY-ROTARY LIGHT

K7. RELAY BATTERY

M1. STARTER MOTOR

M2. ENGINE EMERGENCY STOP MOTOR

M3. WIPER MOTOR

M4. WASHER MOTOR

M5. MOTOR (AIR CHANGING)

M6. AIR VENT DIRECTION CONTROL MOTOR

M7. MOTOR ACT (AIR-MIX)

M8. BLOWER MOTOR

P1. INSTRUMENT PANEL

P2. SWITCH PANEL (LEFT-HAND)

P3. SWITCH PANEL (RIGHT-HAND)

P4. MONITOR DISPLAY

P5. HOURMETER

P6. AIR CONDITIONER CONTROL PANEL

R1. GLOW PLUG

R2. FUEL FLOW ADJUSTMENT RESISTOR

R3. THROTTLE VOLUME

R4. THERMISTOR

R5. FUEL SENSOR

S1. KEY SWITCH

S10. WORKING LIGHT SWITCH

S11. WIPER SWITCH

S12. WASHER SWITCH

S13. OVERLOAD SWITCH

S14. BREAKER / CRUSHER SWITCH

S15. HORN SWITCH

S16. ONE TOUCH IDLE

S2. TRAVEL MODE SWITCH

S3. WORK MODE SWITCH

S4. AUTO MODE SWITCH

S5. CUSHION CONTROL SWITCH

S51. HYDRAULIC FUNCTION CANCELLATION LEVER SWITCH

S52. AIR CONDITIONING COMPRESSOR CLUTCH SWITCH

S53. DOOR LIMIT SWITCH

S54. FRONT WINDOW LIMIT SWITCH

S55. RESERVE TANK LSW

S6. ROTARY LIGHT SWITCH

S7. AUDIBLE ALARM CUT OUT SWITCH

S8. SWING BRAKE SWITCH

S9. ENGINE EMERGENCY STOP SWITCH

U1. DC-DC (24V-12V) CONVERTER

W1. ANTENNA

X1. FUEL FILLER PUMP CONNECTOR

X2. ROTARY LIGHT CONNECTOR

X3. OPTINAL POWER CONNECTOR

X4. ENGINE TEST POINT CONNECTOR

X5. CONTROLLER TEST POINT CONNECTOR

X6. CAB SEATCOMPRESSOR MOTOR CONNECTOR

X8. RADIO CONNETOR

X9. ANTI-THEFT SYSTEM CONNETOR

Y1. SWING PILOT SHUT-OFF SOLENOID VALVE (GREEN BAND)

Y2. PILOT PRESSURE SOLENOID VALVE (BLUE BAND)

Y3. SWING BRAKE SOLENOID VALVE (PINK BAND)

Y4. 2 STAGE TRAVEL SOLENOID VALVE (RED BAND)

Y5. POWER-UP SOLENOID VALVE (YELLOW BAND)

Y6. CUSHION CONTROL SOLENOID VALVE (LIGHT GREEN BAND)

Y7. MAIN PUMP PROPORTIONAL SOLENOID

Y8. AIR CONDITIONER MAGNET CLUTCH

Y9. CRUSHER/BREAKER OPTION TWO FLOW SOLENOID VALVE

22

P

Dr

77B

15Pb5

77C

D1

30

GA

T2

Pi

T1 P1

J I

*

27

GB

*

Pm1 Ps

A21

K1

23

A B

MU

C E F DB

T2

P1

P2

16

Pi

B45*

15Pb8

2526

23

P2 P2P3P3

Pi

P1P1 T T

84

C4

C2

P P0

P3

10 µ

P2

P

82

P1

0.103 MPa14.5 psi1 bar

0.02 MPa2.9 psi0.2 bar

51

60

TB

52D143

C5

C3

C1

Pb4'15

29

255

155

44

41

2

1.2

BA

42

59

5 641

83

75

77

58

76

78

85

5354 85

85

85

*

*

*

*

10µ

79B2

78T

52T

83C

30T1

30T2

29T

76A

15A2

42A

15B2

D2

D1

T

10µ

T1

D3

B

B

A

T

P

C

E

D

10µ

TT

DC

D

E

A

P2P3

T5T4P5P4

T

P

T1T2T3P1

3

42

T

P

13

42

1

150 MESH

0.103 MPa14.9 psi1.03 bar

0.03 MPa4.35 psi0.3 bar

0.004 MPa0.58 psi0,04 bar

43

45

30Pi

S1S3S2

1S3S2S

S

B

A

T

E

F

C

R

G

H

D

57

B22

81

0.5 MPa 72.6 psi 5 bar

ON

0.3 MPa43.5 psi 3 bar

OFF

D75

B

C

Pb9

Pa9

72 55

*

*Y9

85

85

*

Pb215

5a415

Pb115 P

73

Pa115

Pa615

Pb615

1

S2B1

A2S1A1

2T

P

1

3T42

P

A

B2

T

0.5 MPa 72.5 psi 5 bar

ON


OFF

Pi

Pa2

41

15Pb1

*

31µ

RE

D

Pm2

Pm2Ps

T1

P2

P1

RE

D

Pm1

1.5 MPa212 psi15 bar

79B23

B25 **

Pi1 Pi2

A2

a2

A3

DrB4

A4

B3B1

a4A1 Psv

a1

M

a310

ISUZU6BG1T

ISUZU6BG1T

B43 B42 B44Y7

CX240

CX210

CX290

ISUZU6BG1T

AY9A

15Pa8

28

Pc2

Pb8

Pb8'

Pa8'

Pa8

Pb7

A8

B8

A7

B7

*

Ps2

77A

15Pa9

Pa7

Pb6

Pa6

A6

B6

P2 PHP3

15B26B27

ON 2.0 MPa290 psi20 bar

OFF 1.5 MPa217 psi

ON 1.2 MPa174 psi12 bar

OFF 0.9 MPa130 psi

9 bar

PPPTP1 PA

15 bar

0.1MPa14.5 psi1 bar

A5

Pc1

Pb5'

B5

Pb5

Pa5

Pa5

0.29 MPa42.08 psi 2.9 bar

C

554

553

79B1

76D

P4

A3

B3

Pbu

Pa1

Pb1

Pb4

Pb4'

Pb3

Pa3

A2

B2

Pb2

Pa2

A1

B1

2.5

2.5

N1

Ps1 Dr

31

N2

T1T2 T5T3 T4

3

D

F

C

B

A

29 *29*

21

H M3

Y4 Y2

Y5 Y3

Y6Y1

B1 B2

G

32

EPc3'

Pc3

86

79A

L1

K2

L2

73T

* 71

B24

B28

85 *

*

Pa173

Pb173

2T

P

1

1.2 MPa 194 psi 12 bar

ON


OFF

1.2 MPa 194 psi 12 bar

ON


OFF

73

B1

A B C

A1

R*

83*

712

Pa1

T

P

551

10A4

76T

Pb1

P

O

15T

43

71

34.3 MPa / 343 bar / 4980 psi

37.3 MPa / 373 bar / 5412 psi

39.2 MPa / 392 bar / 5688 psi

39.2 MPa / 392 bar / 5688 psi

39.2 MPa / 392 bar / 5688 psi

392 MPa / 392 bar / 5688 psi

39.2 MPa / 392 bar / 5688 psi

39.2 MPa / 392 bar / 5688 psi

39.2 MPa / 392 bar / 5688 psi

39.2 MPa / 392 bar / 5688 psi

3.92 MPa / 39.2 bar / 568 psi

27.9 MPa / 279 bar / 4048 psi

29.4 MPa / 294 bar / 4264 psi

27.9 MPa / 279 bar / 4048 psi

29.4 MPa / 294 bar / 4264 psi

35.3 MPa / 353 bar / 5119 psi

35.3 MPa / 353 bar / 5119 psi

2.55 MPa / 25.5 bar / 370 psi

1.5 MPa / 15 bar / 212 psi

23.5 MPa / 235 bar / 3410 psi

20.6 MPa / 206 bar / 2988 psi

121,4 Kwà 2150 tr/mn

103 Kwà 1950 tr/mn

132,4 Kwà 2000 tr/mn

CX210 - CX230 - CX240 - CX290 EXCAVATORHYDRAULIC SCHEMATICNumber 7-27623

LEGEND

RH REARRH FRONT

LH REARLH FRONT

RIGHTLEFT

PUMP 1

PUMP 2

PILOT SYSTEM PUMP

RETURN TO RESERVOIR

LEAK-OFF RETURN

PILOT SYSTEM CIRCUIT

COMPONENT BOUNDARY

HOSE

PIPING CONNECTION

PIPING CROSS-OVER

COMPONENT ITEM NO.

COMPONENT NUMBER

CONNECTION ITEM NO.

OPTION ITEM NO.

DIPPER (1)

BOOM (1)

TRAVEL

RIGHT

LEFT

EXTENDED

RETRACTED

CLOSED

OPEN

REAR

FRONT

SWING

BOOM (2)

DIPPER (2)

BUCKET

RETRACTED

EXTENDED

FRONT

REAR

ON

HAMMER (H)

TRAVEL

CLOSEDOPENLOWER RAISE

BOOM BUCKET

REARFRONTFRONTREAR

TRAVEL (LEFT)

(FRONT) (REAR)

TRAVEL (RIGHT)

RIGHTLEFTRETRACT EXTENDSWINGDIPPER

RAISE

LOWER

RETRACTED

EXTENDED

OPTIONAL

RAISE

LOWER

CX

210 - CX

230 - CX

240 - CX

290 EX

CA

VA

TO

RH

YD

RA

UL

IC / E

LE

CT

RIC

SC

HE

MA

TIC

1. HYDRAULIC RESERVOIR

2. BREATHER

4. BY-PASS VALVE

5. SCREEN FILTER

6. RETURN FILTER

10. MAIN HYDRAULIC PUMP

15. MAIN CONTROL VALVE

16. HYDRAULIC SWIVEL

21. TRAVEL MOTOR

22. SWING MOTOR

23. TRAVEL MOTOR BRAKE

25. RIGHT BOOM CYLINDER

26. LEFT BOOM CYLINDER

27. DIPPER CYLINDER

28. BUCKET CYLINDER

29. BOOM SAFETY VALVE

30. DIPPER SAFETY VALVE

31. DIPPER LOAD HOLDING VALVE

32. BOOM LOAD HOLDING VALVE

41. FILTER (ULTRA-CLEAN)

42. OIL COOLER

43. RETURN MANIFOLD

44. OIL COOLER BY-PASS VALVE

45. NON-RETURN CHECK VALVE

51. ACCUMULATOR

52. 6 SOLENOID VALVE BANK

53. BOOM & BUCKET CONTROL LEVER

54. SWING & DIPPER CONTROL LEVER

55. TRAVEL CONTROL PEDAL

57. BOOM & DIPPER CONTROL SHOCK ABSORBER

58. PILOT AND RETURN SYSTEM MANIFOLD

59. FILTER

60. PILOT SYSTEM MANIFOLD

72. CONTROL PEDAL (OPTIONAL)

75. FLOW RE-INJECTION BLOCK (OPTIONAL)

76. 3-WAY SELECTOR (OPTIONAL)

77. SAFETY VALVE RETURN SYSTEM MANIFOLD (OPTIONAL)

78. RETURN FILTER (OPTIONAL)

79. CONTROL SHUTTLE BLOCK (OPTIONAL)

81. SWING SHUTTLE BLOCK

82. PILOT CIRCUIT FILTER

83. SHUT-OFF VALVE (OPTIONAL)

84 T-SHUTTLE BLOCK (OPTIONAL)

85. HAND/FOOT CONTROL PILOT FILTER

86. PILOT FILTER BY-PASS VALVE

B22. SWING PILOT PRESSURE SWITCH

B23. BREAKER / CRUSHER PILOT PRESSURE SWITCH

B25. BREAKER PILOT PRESSURE SWITCH

B26. UPPER PILOT PRESSURE SWITCH (YELLOW BAND)

B27. TRAVEL PILOT PRESSURE SWITCH

B42. PUMP PRESSURE SENSOR (P1)

B43. PRESSURE SENSOR (NEGA-CONT)

B44. PUMP PRESSURE SENSOR (P2) (YELLOW BAND)

B45. OVERLOAD INDICATOR PRESSURE SWITCH

Y1. SWING PILOT SHUT-OFF SOLENOID VALVE (GREEN BAND)

Y2. PILOT PRESSURE SOLENOID VALVE (BLUE BAND)

Y3. SWING BRAKE SOLENOID VALVE (PINK BAND)

Y4. 2 STAGE TRAVEL SOLENOID VALVE (RED BAND)

Y5. POWER-UP SOLENOID VALVE (YELLOW BAND)

Y6. CUSHION CONTROL SOLENOID VALVE (LIGHT GREEN BAND)

Y7. MAIN PUMP PROPORTIONAL SOLENOID

Y9. CRUSHER/BREAKER OPTION TWO FLOW SOLENOID VALVE

A = MAIN RELIEF (STANDARD)

A = MAIN RELIEF (BOOST)

B = BOOM RAISING PORT SECONDARY RELIEF

B1/B2 = RELIEF ON BOOM HBCV

C = BOOM LOWERING PORT SECONDARY RELIEF

D = DIPPER OUT PORT SECONDARY RELIEF

D1 = RELIEF ON DIPPER HBCV

E = DIPPER IN PORT SECONDARY RELIEF

F = BUCKET OPEN PORT SECONDARY RELIEF

G = BUCKET CLOSE PORT SECONDARY RELIEF

H = PILOT PRESSURE RELIEF

I = RIGHT-HAND SWING PORT SECONDARY RELIEF (CX 290)

J = LEFT-HAND SWING PORT SECONDARY RELIEF (CX 290)

K1/K2 = TRAVEL REVERSE PORT SECONDARY RELIEF

L1/L2 = TRAVEL FORWARD PORT SECONDARY RELIEF

N1/N2 = NEGATIVE CONTROL RELIEF

51 = ACCUMULATOR

O/P = SECONDARY RELIEF (2eme OPTION)

R = MAIN RELIEF (2eme OPTION)

ITEM DESCRIPTION

ITEM DESCRIPTION PRESSURE SETTING

SECONDOPTION

Case CX 210 Electric

Documents

Transcript of Case CX 210 Electric