Kobelco SK210-8 ACERA MARK 8 Tier III Excavator Shop Manual - PDF DOWNLOAD

SHOP MANUAL EXCAVATOR

SK210-8 ACERA MARK 8 TIER III

YN91ZU0007P1 NA

Issued 01-2007

APPLICABLE: SK210-8........................YQ09U3301 ~

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Swing Attachment

Features

Travel straight

Travel straight at combined operation

Travel 2-speed change & Auto 1st (low) speed return

1-2 travel speed change and low speed / high torque at heavy duty

Auto parking brake

Automatic braking when parking

Motor overrun protection

Prevents overrunning of travel motor on the down hill slope.

Travel pilot operation

Prevents hunting by the built in travel shockless mechanism

Reverse rotation protective function

Easy positioning to protect it from swinging back when stops swinging.

Swing priority circuit

Easy operation of stable swing speed, arm slanted leveling,

(simultaneous operation of arm in and swing motions)

swing press digging

Automatic swing parking brake

Swing parking brake when operating at on a slope

Hydraulic pilot control system

Light action with operating lever

Pilot safety lock system

Cut out of pilot circuit by safety lock lever.

Lock valve (boom / arm)

Protect boom and arm from unexpected drop (Natural fall).

Holding valve for boom (Option)

Prevention of boom falling when boom head side piping breaks

Multi control valve (Option)

Changeable to 2 operating pattern with only 1 lever.

Pressurized hydraulic oil tank

To prevent hydraulic oil from entering dust and to

Pump

Suction strainer

Remove dust on suction side.

Line filter ; pilot circuit

To prevent pilot operating circuit from malfunctioning

Return circuit

To prevent hydraulic oil from contamination

Cooling hydraulic oil by oil cooler

To prevent hydraulic oil from being deteriorated.

Pressure draining circuit

To release the main circuit pressure for piping repair work.

Main control valve with optional valve

Optional piping and additional work are easy

Switching of return line for N&B machine in the cab

Switching of return line for N&B machine is able to

(Option)

change with a switch in the cab

Electric flow controlled variable displacement pump

Pump delivery rate control by a current command to the solenoid proportional valve of the variable displacement pump

Positive flow rate control

Flow control by positive pilot control pressure

Hydraulics backup control

Backup control by hydraulic when the electric flow controlled

Attachment

variable displacement pump fails.

Micro computer

Mass handling capability Low fuel consumption

Function

promote self suction ability of pump

Others

Easy operability and safety

Travel

Performance Device

Boom up conflux circuit

Speed up of boom up operation

Arm conflux circuit

Speed up of arm operation

Bucket conflux circuit

For speed-up of bucket operation (digging & dump)

Optimum operation by work mode select (H,S,A,B)

Efficient operation in all work modes

Auto accel

Reduce fuel consumption and noise by lowering engine speed when control lever is in neutral position.

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P

MB

P A2 a2

MB

P

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PH1 PH2 PSV-P1

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PSV-P2 Pcr 35.8~37.8 MPa

VB

VB

VA

VA

Pcr 35.8~37.8 MPa

3

SWING PG DB

REG

REG

M

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MA

MA TRAVEL RIGHT

a3

PA

PB

TRAVEL LEFT

8

a4

Dr

D

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A

M

B

a5 118kw /2000min-1

B1

B3 Dr3

A3

2

PTO (OPTION)

11 15

14

T1

P2 P1

MAIN CONTROL VALVE 34.3MPa 37.8MPa

T2

SWING RIGHT SWING LEFT ARM OUT ARM IN BUCKET DUMP BUCKET DIGGING

CMR1 PL PTb

CMR2

PBL TRAVEL PRIORITY

P1UNLOAD

PAL

12

CT2 TRAVEL RIGHT

HYD.TANK

BOOM UP BOOM DOWN

TRAVEL LEFT

PCb

BOOM CONFLUX

P2UNLOAD

CT1

PAr

AL BL

CP2

SE1 SE2 SE3 SE4 P P P P

T3 PB1

CP1

BR AR

SE7 SE8 P P

SENSOR 1 BLOCK

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

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PBr Dr BOOM

LCs

LCb

PAs SE5 P PBs

Pss

SWING

PBb

As Bs PAa1

37.7MPa (ROD)Bb

9

CRb LCa

RH

(HEAD)Ab SOL/V BLOCK

PBa1

PAb P1 SV-4

SV-1

SV-3

LEVER A1 LOCK

SWING A2 P/B

BUCKET

PCc PBc

Aa (HEAD)

LCc

CRar

(ROD)Bc (HEAD)Ac

SV-2

PLc2

7

PSV-C

PSV-D

A5 P2UNLOAD

TRAVEL A6 PRIORITY

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A8 ARM2

T2

P2

P

T

ARM & SWING

RH

P

LH

T

39.7MPa LCAT2 ARM 2 LCAP2

PBa2

LCo

5

OPTION

17

BOOM CYLINDER

Ao Bo

PAa2 MU PBp1

P2 BYPASS CUT

(T3b)

10 RIGHT TRAVEL FORWARD RIGHT TRAVEL REVERSE

3

6

4 P SE9

1

5

2 P SE10

LEFT TRAVEL FORWARD LEFT TRAVEL REVERSE

PBo P1 BYPASS CUT

PBp2

(T4a) (Dr4)

(T3a) (P3)

PSV-A

T

6

ARM CYLINDER

PAo PSV-B

P BOOM & BUCKET

Ba (ROD)

39.7MPa PAc

ATT A4 BOOSTING

BUCKET CYLINDER

37.7MPa

37.7MPa TRAVEL 1/2 SPEED A3 CHANGEOVER

LH

ARM 1

39.7MPa

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N&B specification NO. 50 51 52 53 P2

P1

T1

PARTS SELECTOR VALVE STOP VALVE PILOT VALVE RELIEF VALVE

PART No. MODEL No. YN30V00104F1 VBY-174B 24100P3133F1 YN30V00080F1 16030-00000 YN22V00021F1 KRX16EK22

T2

NOTE:

1. THIS HYDRAULIC CIRCUIT IS USED TO ADD TO STANDARD CIRCUIT. 2. SELECTION CONDITION AND PROPORTIONAL VALVE COMMAND WHEN ANY OF NIBBLER SINGLE & CONFLUX FLOW OR BREAKER IN SERVICE.

PTb P1 UNLOAD

TRAVEL PRIORITY

PCb

SELECTION

M

CONFLUX / SINGLE FLOW CHANGEOVER SWITCH

P2 UNLOAD

ELECTROMAGNETIC COMMAND SIGNAL OF SELECTOR VALVE (ITEM 50)(W:O,W/O:-)

COMMAND SIGNAL OF SOLENOID PROPORTIONAL VALVE (W: , W/O: ) P1 PUMP

P2 PUMP

TRAVEL STRAIGHT

P1 UNLOAD P2 UNLOAD

CONFLUX FLOW OF NIBBLER CONFLUX "ON" SINGLE FLOW OF NIBBLER CONFLUX "OFF" CONFLUX "OFF" BREAKER

MAIN PUMP PCa

3. WHEN USING NIBBLER, ACCORDING TO SPECIFICATION OF NIBBLER INSTALLED, CHOOSE CONFLUENCE OR SINGLE FLOW BY CONFLUENCE FLOW CHANGEOVER SWITCH. 4. ADJUST OVERLOAD RELIEF VALVE OF OPTIONAL PORT TO CUSTOMIZE SPECIFICATION ORDINARY SET PRESSURE.

51 LEFT

NIBBLER

NOTE 4

53

HYD.TANK

RIGHT BREAKER

52

PBo OPTION

PAo

24.5MPa

NIBBLER & BREAKER PILOT VALVE

Ao T P

Bo 24.5MPa SOL/V BLOCK

B

LEVER A1 LOCK

C1

C2 A P SE-11

T

50

SV-13 Ps P SE-29

C

PL

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P

P A2 a2

MB

MB

P

PSV2

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4

PSV-P2 Pcr 35.8~37.8 MPa

VB

VB

VA

VA

Pcr 35.8~37.8 MPa

3

SWING PG DB

REG

REG

651

M

652

1

29.0MPa

611

D

MA

MA TRAVEL RIGHT

643 646

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PB

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8

532 a3

D

a4

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A

M

B

a5 118kw /2000min-1

B1

B3 Dr3

A3

2

PTO (OPTION)

11 15

14

T1

P2 P1

MAIN CONTROL VALVE 34.3MPa 37.8MPa

T2

SWING RIGHT SWING LEFT ARM OUT ARM IN BUCKET DUMP BUCKET DIGGING

CMR1 PL PTb

CMR2

PBL TRAVEL PRIORITY

P1UNLOAD

PAL

12

CT2 TRAVEL RIGHT

HYD.TANK

BOOM UP BOOM DOWN

TRAVEL LEFT

PCb

BOOM CONFLUX

P2UNLOAD

CT1

PAr

AL BL

CP2

SE1 SE2 SE3 SE4 P P P P

T3 PB1

SE7 SE8 P P

SENSOR 1 BLOCK

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

CP1

BR AR

PCa CCb

PBr Dr BOOM

LCs

LCb

PAs Pss

SWING

SE5 P

PBs

PBb

As Bs PAa1

37.7MPa (ROD)Bb

9

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RH

(HEAD)Ab SOL/V BLOCK

PBa1

PAb P1 SV-4

SV-1

SV-3

LEVER A1 LOCK

SWING A2 P/B

BUCKET

PCc PBc

Aa (HEAD)

LCc

SV-2

7

CRar

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PLc2

PSV-C

PSV-D

A5 P2UNLOAD

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T2

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T

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Ba (ROD)

39.7MPa

P

LH

T

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PBa2

LCo

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OPTION

17

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Ao Bo

PAa2 MU PBp1

P2 BYPASS CUT

(T3b)

(T3a)

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6

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5

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PSV-A

T

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ARM CYLINDER

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P BOOM & BUCKET

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37.7MPa

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39.7MPa

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PSV-P2 Pcr 35.8~37.8 MPa

VB

VB

VA

VA

Pcr 35.8~37.8 MPa

3

SWING PG DB

REG

REG

M

1

29.0MPa D

MA

MA TRAVEL RIGHT

D

PA

PB

TRAVEL LEFT

8

a3

a4

Dr 5.0MPa

A

M

B

a5 118kw /2000min-1

B1

B3 Dr3

A3

2

PTO (OPTION)

11 15

14

T1

P2 P1

MAIN CONTROL VALVE 34.3MPa 37.8MPa

T2

SWING RIGHT SWING LEFT ARM OUT ARM IN BUCKET DUMP BUCKET DIGGING

CMR1 PL PTb

CMR2

PBL TRAVEL PRIORITY

P1UNLOAD

PAL

12

CT2 TRAVEL RIGHT

HYD.TANK

BOOM UP BOOM DOWN

TRAVEL LEFT

PCb

BOOM CONFLUX

P2UNLOAD

CT1

PAr

AL BL

CP2

SE1 SE2 SE3 SE4 P P P P

T3 PB1

SE7 SE8 P P

SENSOR 1 BLOCK

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

CP1

BR AR

PCa CCb

PBr Dr BOOM

LCs

LCb

PAs Pss

SWING

SE5 P

PBs

PBb

As Bs PAa1

37.7MPa (ROD)Bb

9

CRb LCa

RH

(HEAD)Ab SOL/V BLOCK

PBa1

PAb P1 SV-4

SV-1

SV-3

LEVER A1 LOCK

SWING A2 P/B

BUCKET

PCc PBc

Aa (HEAD)

LCc

SV-2

7

CRar

(ROD)Bc (HEAD)Ac

PLc2

PSV-C

PSV-D

A5 P2UNLOAD

TRAVEL A6 PRIORITY

A7 P1UNLOAD

A8 ARM2

T2

P

T

ARM & SWING

RH

Ba (ROD)

39.7MPa

P

LH

T

39.7MPa LCAT2 ARM 2 LCAP2

PBa2

LCo

5

OPTION

17

BOOM CYLINDER

Ao Bo

PAa2 MU PBp1

P2 BYPASS CUT

(T3b)

(T3a)

10 RIGHT TRAVEL FORWARD RIGHT TRAVEL REVERSE

3

6

4 P SE9

1

5

2 P SE10

LEFT TRAVEL FORWARD LEFT TRAVEL REVERSE

PBo P1 BYPASS CUT

(P3)

PSV-A

T

6

ARM CYLINDER

PAo PSV-B

P BOOM & BUCKET

PAc ATT A4 BOOSTING

BUCKET CYLINDER

37.7MPa

37.7MPa TRAVEL 1/2 SPEED A3 CHANGEOVER

LH

ARM 1

39.7MPa

PBp2

(T4a) (Dr4) (P4)

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MAIN PUMP

A1

P

P

P A2 a2

MB

P

MB

PSV2

PH1 PH2 PSV-P1

4

PSV-P2 Pcr 35.8~37.8 MPa

VB

VB

VA

VA

Pcr 35.8~37.8 MPa

3

SWING PG DB

REG

REG

M

1

29.0MPa D

MA

MA TRAVEL RIGHT

D

PA

PB

TRAVEL LEFT

8

a3

a4

Dr 5.0MPa

A

M

B

a5 118kw /2000min-1

B1

B3 Dr3

A3

2

PTO (OPTION)

11 15

14

T1

P2 P1

MAIN CONTROL VALVE 34.3MPa 37.8MPa

CMR2

PBL TRAVEL PRIORITY

P1UNLOAD

BOOM UP BOOM DOWN

TRAVEL LEFT PAL

PCb

12

CT2 TRAVEL RIGHT

HYD.TANK

SWING RIGHT SWING LEFT ARM OUT ARM IN BUCKET DUMP BUCKET DIGGING

BOOST CHECK

CMR1 PL PTb

T2

BOOM CONFLUX

P2UNLOAD

CT1

PAr

AL BL

CP2

SE1 SE2 SE3 SE4 P P P P

T3 PB1

SE7 SE8 P P

SENSOR 1 BLOCK

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

CP1

BR AR

PCa CCb

PBr Dr BOOM

LCs

LCb

PAs Pss

SWING

SE5 P

16

PBs

PBb

(OCEANIA)

As Bs PAa1

37.7MPa (ROD)Bb

9

CRb LCa

RH

(HEAD)Ab SOL/V BLOCK

PBa1

PAb P1 SV-4

SV-1

SV-3

LEVER A1 LOCK

SWING A2 P/B

BUCKET

PCc PBc

Aa (HEAD)

LCc

SV-2

7

CRar

(ROD)Bc (HEAD)Ac

PLc2

PSV-C

PSV-D

A5 P2UNLOAD

TRAVEL A6 PRIORITY

A7 P1UNLOAD

P

T

ARM & SWING

RH

Ba (ROD)

39.7MPa

P

LH

T

39.7MPa LCAT2 ARM 2 LCAP2

PBa2

LCo

5

OPTION

17

BOOM CYLINDER

Ao Bo

PAa2 MU PBp1

P2 BYPASS CUT

(T3b)

(T3a)

10 RIGHT TRAVEL FORWARD RIGHT TRAVEL REVERSE

3

6

4 P SE9

1

5

2 P SE10

LEFT TRAVEL FORWARD LEFT TRAVEL REVERSE

PBo P1 BYPASS CUT

(P3)

PBp2

(T4a) (Dr4) (P4)

A8 ARM2

17

PSV-A

T2

T

6

ARM CYLINDER

PAo PSV-B

P BOOM & BUCKET

PAc ATT A4 BOOSTING

BUCKET CYLINDER

37.7MPa

37.7MPa TRAVEL 1/2 SPEED A3 CHANGEOVER

LH

ARM 1

39.7MPa

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MAIN PUMP

A1

P

P

P A2 a2

MB

P

MB

PSV2

PH1 PH2 PSV-P1

4

PSV-P2 Pcr 35.8~37.8 MPa

VB

VB

VA

VA

Pcr 35.8~37.8 MPa

3

SWING PG DB

REG

REG

M

1

29.0MPa D

MA

MA TRAVEL RIGHT

D

PA

PB

TRAVEL LEFT

8

a3

a4

Dr 5.0MPa

A

M

B

a5 118kw /2000min-1

B1

B3 Dr3

A3

2

PTO (OPTION)

11 15

14

T1

P2 P1

MAIN CONTROL VALVE 34.3MPa 37.8MPa

T2

SWING RIGHT SWING LEFT ARM OUT ARM IN BUCKET DUMP BUCKET DIGGING

CMR1 PL PTb

CMR2

PBL TRAVEL PRIORITY

P1UNLOAD

PAL

12

CT2 TRAVEL RIGHT

HYD.TANK

BOOM UP BOOM DOWN

TRAVEL LEFT

PCb

BOOM CONFLUX

P2UNLOAD

CT1

PAr

AL BL

CP2

SE1 SE2 SE3 SE4 P P P P

T3 PB1

SE7 SE8 P P

SENSOR 1 BLOCK

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

CP1

BR AR

PCa CCb

PBr Dr BOOM

LCs

LCb

PAs Pss

SWING

SE5 P

PBs

PBb

As Bs PAa1

37.7MPa (ROD)Bb

9

CRb LCa

RH

(HEAD)Ab SOL/V BLOCK

PBa1

PAb P1 SV-4

SV-1

SV-3

LEVER A1 LOCK

SWING A2 P/B

BUCKET

PCc PBc

Aa (HEAD)

LCc

SV-2

7

CRar

(ROD)Bc (HEAD)Ac

PLc2

PSV-C

PSV-D

A5 P2UNLOAD

TRAVEL A6 PRIORITY

A7 P1UNLOAD

A8 ARM2

T2

P

T

ARM & SWING

RH

Ba (ROD)

39.7MPa

P

LH

T

39.7MPa LCAT2 ARM 2 LCAP2

PBa2

LCo

5

OPTION

17

BOOM CYLINDER

Ao Bo

PAa2 MU PBp1

P2 BYPASS CUT

(T3b)

(T3a)

10 RIGHT TRAVEL FORWARD RIGHT TRAVEL REVERSE

3

6

4 P SE9

1

5

2 P SE10

LEFT TRAVEL FORWARD LEFT TRAVEL REVERSE

PBo P1 BYPASS CUT

(P3)

PSV-A

T

6

ARM CYLINDER

PAo PSV-B

P BOOM & BUCKET

PAc ATT A4 BOOSTING

BUCKET CYLINDER

37.7MPa

37.7MPa TRAVEL 1/2 SPEED A3 CHANGEOVER

LH

ARM 1

39.7MPa

PBp2

(T4a) (Dr4) (P4)

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MAIN PUMP

A1

P

P

P A2 a2

MB

P

MB

PSV2

PH1 PH2 PSV-P1

4

PSV-P2 Pcr 35.8~37.8 MPa

VB

VB

VA

VA

Pcr 35.8~37.8 MPa

3

SWING PG DB

REG

REG

M

1

29.0MPa D

MA

MA TRAVEL RIGHT

D

PA

PB

TRAVEL LEFT

8

a3

a4

Dr 5.0MPa

A

M

B

a5 118kw /2000min-1

B1

B3 Dr3

A3

2

PTO (OPTION)

11 15

14

T1

P2 P1

MAIN CONTROL VALVE 34.3MPa 37.8MPa

T2

SWING RIGHT SWING LEFT ARM OUT ARM IN BUCKET DUMP BUCKET DIGGING

CMR1 PL PTb

CMR2

PBL TRAVEL PRIORITY

P1UNLOAD

PAL

12

CT2 TRAVEL RIGHT

HYD.TANK

BOOM UP BOOM DOWN

TRAVEL LEFT

PCb

BOOM CONFLUX

P2UNLOAD

CT1

PAr

AL BL

CP2

SE1 SE2 SE3 SE4 P P P P

T3 PB1

SE7 SE8 P P

SENSOR 1 BLOCK

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

CP1

BR AR

PCa CCb

PBr Dr BOOM

LCs

LCb

PAs Pss

SWING

SE5 P

PBs

PBb

As Bs PAa1

37.7MPa (ROD)Bb

9

CRb LCa

RH

(HEAD)Ab SOL/V BLOCK

PBa1

PAb P1 SV-4

SV-1

SV-3

LEVER A1 LOCK

SWING A2 P/B

BUCKET

PCc PBc

Aa (HEAD)

LCc

SV-2

7

CRar

(ROD)Bc (HEAD)Ac

PLc2

PSV-C

PSV-D

A5 P2UNLOAD

TRAVEL A6 PRIORITY

A7 P1UNLOAD

A8 ARM2

T2

P

T

ARM & SWING

RH

Ba (ROD)

39.7MPa

P

LH

T

39.7MPa LCAT2 ARM 2 LCAP2

PBa2

LCo

5

OPTION

17

BOOM CYLINDER

Ao Bo

PAa2 MU PBp1

P2 BYPASS CUT

(T3b)

(T3a)

10 RIGHT TRAVEL FORWARD RIGHT TRAVEL REVERSE

3

6

4 P SE9

1

5

2 P SE10

LEFT TRAVEL FORWARD LEFT TRAVEL REVERSE

PBo P1 BYPASS CUT

(P3)

PSV-A

T

6

ARM CYLINDER

PAo PSV-B

P BOOM & BUCKET

PAc ATT A4 BOOSTING

BUCKET CYLINDER

37.7MPa

37.7MPa TRAVEL 1/2 SPEED A3 CHANGEOVER

LH

ARM 1

39.7MPa

PBp2

(T4a) (Dr4) (P4)

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6

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6

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SWING PG DB

REG

REG

M

1

29.0MPa D

MA

MA TRAVEL RIGHT

D

PA

PB

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8

a3

a4

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M

B

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B1

B3 Dr3

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2

PTO (OPTION)

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14

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CMR2

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PCb

BOOM CONFLUX

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PAr

AL BL

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SE1 SE2 SE3 SE4 P P P P

T3 PB1

SE7 SE8 P P

SENSOR 1 BLOCK

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3

4

5

6

7

8

1

2

3

4

5

6

7

8

CP1

BR AR

PCa CCb

PBr Dr BOOM

LCs

LCb

PAs Pss

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PBs

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37.7MPa (ROD)Bb

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SV-3

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Aa (HEAD)

LCc

SV-2

7

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P

T

ARM & SWING

RH

Ba (ROD)

39.7MPa

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LH

T

39.7MPa LCAT2 ARM 2 LCAP2

PBa2

LCo

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(T3a)

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3

6

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1

5

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LEFT TRAVEL FORWARD LEFT TRAVEL REVERSE

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(P3)

PBp2

(T4a) (Dr4) (P4)

A8 ARM2

17

PSV-A

T2

T

6

ARM CYLINDER

PAo PSV-B

P BOOM & BUCKET

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BUCKET CYLINDER

37.7MPa

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LH

ARM 1

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KOBELCO CONSTRUCTION MACHINERY AMERICA, LLC. 245 E NORTH AVENUE CAROL STREAM, IL 60188 U.S.A.

North American English Part Number YN91ZU0007P1 NA Printed in U.S.A. • Bur