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WORKSHOP MANUAL

DUMPER

KC70


CONTENTS MECHANISM 1. SPECIFICATIONS 2. DIMENSIONS 3. ENGINE

4. TRANSMISSION

5. HYDRAULIC SYSTEM (DUMPING) 6. FUEL SYSTEM 7. V-BELT

8. WIRING DIAGRAM

SERVICING 1. TIGHTENING TORQUE 2. OILS

3. GREASING

4. CAUTION FOR DISASSEMBLING AND REASSEMBLING 5. ADJUSTMENT OF COMPONENT PARTS 6. REPLACEMENT OF WEAR OUT PARTS

7. TROUBLESHOOTING AND COUNTERMEASURES 8. MAINTENANCE INTERVALS

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MECHANISM 1. SPECIFICATIONS 2. DIMENSIONS 3. ENGINE

4. TRANSMISSION

5. HYDRAULIC SYSTEM (DUMPING) 6. FUEL SYSTEM 7. V-BELT

8. WIRING DIAGRAM

2


1. SPECIFICATIONS Model

Machine weight

Max. loading capacity Engine

Oil and air-cooled, 4cycle, diesel 72 x 68

Output

(KW/rpm)

4.1/2900

Length

(mm)

2300

Height

(mm)

1960

(mm)

620

(cc)

Starting system Width

(mm)

Min. ground clearance

Track center-to-center distance Bed

Length Width

Capacity ( Struck / Heaped )

Crawler type

Number of drive sprocket teeth Crawler pitch Track width

Ground contact length

Ground contact pressure w/o load Ground contact pressure w/t load Max. traction power Travelling speed

(Forward / Reverse) Main clutch

(mm)

820

(mm)

350

( )

300 / 360

Rubber track 7

(mm)

72

200

4 (one side) 980 25

(kgf/cm2) (kgf/cm ) 2

(kgf)

1st

(km/h)

3rd

(km/h)

2nd

(km/h)

Steering clutch

Screw type with spring 0.15 0.33 680

Gear shift type transmission 0 - 1.4 / 0 - 1.3 0 - 2.7 / 0 - 2.6 0 - 4.4 / 0 - 4.3

Belt tension with Foot pedal or Hand lever Tooth clutch

Steering brake

Internal expanding type

Dumping type

Hydraulic

Parking brake

Dumping direction

Max. Dumping angle

Raising time (at 2900rpm) Capacity

1250

(° )

Alignment

Electric

130

(mm)

Gradeability

Type

(mm)

(mm)

Number of track rollers

276

880

(mm)

Height

Dumping performance

1

(mm)

Total Displacement

Transmission

700

KUBOTA OC60-E3-D1-D-CRYM-1

Type

Bore and Stroke

Undercarriage

510

(kg)

Model No. of cylinder

Dimensions

KC70

(kg)

Lowering time (at 2900rpm) Fuel tank

Hydraulic oil tank Engine oil

Transmission oil

Internal expanding type Front

(° )

68 (43)

(sec)

4.2

(sec) ( ) ( ) ( ) ( )

6.4 8.5 1.5 1.3 1.9

3


4

2. DIMENSIONS


3. ENGINE

Model : OC60-E3-D1-D-CRYM-1 / Code No : 1G181-31000 See the WSM / DIESEL ENGINE OC60-E3 (Code No 9Y131-00690)

Specifications Model

OC60-E3(-X)

Number of Cylinders Type

Bore×Stroke

Total Displacement

ISO Net Continuous

mm (in.)

cm (cu.in.) 3

kW/min-1 (rpm)

OC60-E3(-X)-L

OC95-E3(-X)

OC95-E3(-X)-L

Oil-cooled 4-cycle diesel engine

72.0 x 68.0 (2.83 x 2.68)

83.0 x 77.0 (3.27 x 3.03)

4.2 / 3600

6.25 / 3600

276 (16.8)

416 (25.4)

(HP/min-1 (rpm))

(5.6 / 3600)

(8.38 / 3600)

kW/min-1 (rpm) (HP/min-1 (rpm))

(6.0 / 3600)

(9.4 / 3600)

ISO/SAE Net Intermittent Maximum Bare Speed

Minimum Bare Idling Speed Combustion System

(min-1 (rpm))

4.5 / 3600

(min-1 (rpm))

3800

TVCS (Three-vortex combustion system) ND type (DENSO)

Governor

Centrifugal mechanical governor

Direction of Rotation

Clockwise (View from flywheel side)

Injection Nozzle

Injection Timing (Static)

DN4PD82 (DENSO)

0.28 rad (16°)

0.24 rad (14°)

before T.D.C.

Injection Pressure

before T.D.C.

13.73 MPa (140,0 kgf/cm , 1991 psi) 2

Compression Ratio

24.5 : 1

Lubricating System

24.0 : 1

Forced lubrication by trochoid pump

Oil Pressure Indicating

Electrical Type Switch

Lubricating Filter

Oil strainer

Cooling System

Oil cooling + Air cooling

Starting System Starting Motor

12V 0.7kW

Starting Support Device

Electric starting with starter

12V 1.2kW

By Glow Plug in Combustion Chamber

EGR

Battery

12V, 27 AH equivalent

Charging Alternator

12V, 48W

Fuel

Fuel Tank Capacity

12V, 170W

None

12V, 36 AH equivalent

12V, 48W

Diesel Fuel No.2-D S500 or S15, see page G-5.

3.5L (0.92 U.S.gals)

Lubricating Oil

Lubricating Oil Capacity

7.0 / 3600

1300

Fuel Injection Pump

Weight (Dry)

1

12V, 170W

5.5L (1.5 U.S.gals)

Class CF lubricating oil as per API classification is recommended. For details on recommended lubricating oils, see page G-6.

kg(lbs)

1.3L (1.4 U.S.qts) 38.0 (83.8)

1.7L (1.8 U.S.qts) 56.0 (123)

W10441170

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Performance curves

1.2

9.8

1.0

7

5.2

kgf . m

23.6

2.4

(5)

21.6

(1)

kW

11.8

(1)

2.2

19.6

2.0

17.6

1.8

10

7.4

(1)

kW

1.4

N.m

(5)

13.7

(1)

kgf . m

OC95-E3

N.m

OC60-E3

(6) (6)

6

5

3.7

(7)

6.7

9

(2)

8

5.9

(7)

(2)

(2)

4

3.0

7

5.2

3

2.2

6

4.4

HP

HP

(2)

4.4

295

220

(8)

268

210 200

18

20

22

24

(4)

26

28

30

32

34

(3)

(3)

g/kW . h

282

g/HP . h

g/kW . h

(3)

5 220

(8)

282

200

18

20

22

(5) Net Intermittent Torque (6) Net Intermittent B.H.P.

Fuel consumption

Fuel consumption(L/h)

Fuel consumption KC70

Work load factor(%)

6

24

(4)

min-1(rpm) x 100

(3) Fuel Consumption (4) Engine Speed

(3)

190

255

36

3ECAAACEP001A

(1) Touque (2) Brake Horsepower

210

268

g/HP . h

295

26

28

min-1(rpm) x 100

30

32

34

36

Intermittent Continuous

(7) Net Continuous B.H.P. (8) Net Intermittent B.S.F.C.


Dimension • STANDARD TYPE [OC60-E3]

3ECAAACFP001A

A B C

STANDARD TYPE

133.5 mm (5.256 in.) 121 mm (4.76 in.) 164 mm (6.46 in.)

D

403.0 mm (15.87 in.)

F

47.0 mm (1.85 in.)

H

461.0 mm (18.15 in.)

E

G I

J

K

3.0 mm (0.12 in.)

40.0 mm (1.57 in.)

458.0 mm (18.03 in.) 138 mm (5.43 in.)

95.0 mm (3.74 in.)

W1032756

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