U20-3, U25-3 WSM
Hydraulic system (Service section)
IV
-S-23
d. Traveling performance
U20-3
U25-3
Remarks
Manufacturer
Fujikoshi
KAYABA
Model
PHV-190-39-1
MAG-18V-230E
Capacity
1st/2nd
cc/rev
16.1/8.4
18.0/10.0
Reduction ratio
1/39
1/42.96
Total displacement
cc/rev
627.9/327.6
774/430
Rated oil flow
L/min
23
27.6
Theoretical torque
1F
kg·m
N·m
220
2156
269.6
2,656
U25-3: at 21.6 MPa, 213 kgf/cm
2
2F
kg·m
N·m
N/A
149.8
1,476
Theoretical speed
1F/2F
rpm
36.6/70.2
35.6/64.2
U25-3: at 27.6 L/min
Relief valve pressure
Mpa
kg/cm
2
21.6
213
21.6
213
Climbing ability
deg.
30
30
Max. traction force
1F
KN
kgf
15.5
1580
20.3
2070
Slip 70% theoretical torque
Oil temp. : 50 ± 5 °C
2F
KN
kgf
8.1
826
9.7
990
Relief 60% theoretical torque
Traveling block performance
mm/10min
300
300
10 min engine stop
Testing angle : 20deg
Traveling
speed
Rubber/Iron
1F
km/h
2.2
2.5
2F
km/h
4.2
4.5
10m traveling time
1F
sec./10m
16/
14/
R : Rubber shoe/
I : Iron shoe
2F
sec./10m
8.6/
8.0/
Straight travel performance
1,2F
mm/10m
600
600
Drain amount at lock
1F
L/min
2F
L/min
Drain amount
while rotating
1F
L/min
2F
L/min
Hi-speed change pressure
1st
→
2nd
MPa
kgf/cm
2
1.5
14.7
0.59
20.2
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Summary of Contents for U20-3
Page 1: ...WORKSHOP MANUAL KUBOTA EXCAVATOR U20 3 Code No 97899 60740 U25 3 ...
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Page 48: ...U20 3 U25 3 WSM Machine body Mechanism section II M 17 U25 3 No 1 Hole 2 shaft ...
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Page 62: ...U20 3 U25 3 WSM Machine body Service section II S 13 B Front attachment a Parts designation ...
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Page 118: ...U20 3 U25 3 WSM Engine III 3 ...
Page 121: ...U20 3 U25 3 WSM Engine III 6 Performance curves Model D1105 EBH 10 ...
Page 122: ...U20 3 U25 3 WSM Engine III 7 Performance curves Model D1105 EBH 11 ...
Page 123: ...U20 3 U25 3 WSM Engine III 8 b Dimensions ...
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Page 127: ...U20 3 U25 3 WSM Engine Mechanism section III M 2 A Feature ...
Page 129: ...U20 3 U25 3 WSM Engine Mechanism section III M 4 3 Crankshaft 4 Piston and piston rings ...
Page 130: ...U20 3 U25 3 WSM Engine Mechanism section III M 5 5 Connecting rod 6 Rocker arm 7 Camshaft ...
Page 131: ...U20 3 U25 3 WSM Engine Mechanism section III M 6 8 Fuel camshaft 9 Flywheel ...
Page 132: ...U20 3 U25 3 WSM Engine Mechanism section III M 7 C Lubricating system 1 General ...
Page 133: ...U20 3 U25 3 WSM Engine Mechanism section III M 8 2 Oil pump 3 Relief valve ...
Page 134: ...U20 3 U25 3 WSM Engine Mechanism section III M 9 4 Oil filter cartridge 5 Oil pressure switch ...
Page 135: ...U20 3 U25 3 WSM Engine Mechanism section III M 10 D Cooling system 1 General 2 Water pump ...
Page 137: ...U20 3 U25 3 WSM Engine Mechanism section III M 12 5 Radiator cap ...
Page 139: ...U20 3 U25 3 WSM Engine Mechanism section III M 14 F Fuel system 1 General 2 Injection pump ...
Page 140: ...U20 3 U25 3 WSM Engine Mechanism section III M 15 ...
Page 141: ...U20 3 U25 3 WSM Engine Mechanism section III M 16 ...
Page 143: ...U20 3 U25 3 WSM Engine Mechanism section III M 18 5 Governor ...
Page 144: ...U20 3 U25 3 WSM Engine Mechanism section III M 19 ...
Page 146: ...U20 3 U25 3 WSM Engine Mechanism section III M 21 ...
Page 147: ...U20 3 U25 3 WSM Engine Mechanism section III M 22 G Electrical system 1 Charging system ...
Page 148: ...U20 3 U25 3 WSM Engine Mechanism section III M 23 H Turbo charger system ...
Page 149: ...U20 3 U25 3 WSM Engine Mechanism section III M 24 ...
Page 150: ...U20 3 U25 3 WSM Engine Mechanism section III M 25 ...
Page 151: ...U20 3 U25 3 WSM Engine Mechanism section III M 26 ...
Page 152: ...U20 3 U25 3 WSM Engine Mechanism section III M 27 ...
Page 162: ...U20 3 U25 3 WSM Engine Service section III S 10 B General 1 Engine identification ...
Page 163: ...U20 3 U25 3 WSM Engine Service section III S 11 2 General precaution ...
Page 164: ...U20 3 U25 3 WSM Engine Service section III S 12 3 Tightening torques ...
Page 165: ...U20 3 U25 3 WSM Engine Service section III S 13 4 Troubleshooting ...
Page 166: ...U20 3 U25 3 WSM Engine Service section III S 14 ...
Page 167: ...U20 3 U25 3 WSM Engine Service section III S 15 ...
Page 168: ...U20 3 U25 3 WSM Engine Service section III S 16 5 Servicing specifications ...
Page 169: ...U20 3 U25 3 WSM Engine Service section III S 17 ...
Page 170: ...U20 3 U25 3 WSM Engine Service section III S 18 ...
Page 171: ...U20 3 U25 3 WSM Engine Service section III S 19 ...
Page 172: ...U20 3 U25 3 WSM Engine Service section III S 20 ...
Page 173: ...U20 3 U25 3 WSM Engine Service section III S 21 ...
Page 174: ...U20 3 U25 3 WSM Engine Service section III S 22 ...
Page 175: ...U20 3 U25 3 WSM Engine Service section III S 23 ...
Page 176: ...U20 3 U25 3 WSM Engine Service section III S 24 ...
Page 177: ...U20 3 U25 3 WSM Engine Service section III S 25 6 Maintenance check list ...
Page 178: ...U20 3 U25 3 WSM Engine Service section III S 26 7 Check and maintenance ...
Page 179: ...U20 3 U25 3 WSM Engine Service section III S 27 ...
Page 180: ...U20 3 U25 3 WSM Engine Service section III S 28 ...
Page 181: ...U20 3 U25 3 WSM Engine Service section III S 29 ...
Page 182: ...U20 3 U25 3 WSM Engine Service section III S 30 ...
Page 183: ...U20 3 U25 3 WSM Engine Service section III S 31 ...
Page 184: ...U20 3 U25 3 WSM Engine Service section III S 32 ...
Page 185: ...U20 3 U25 3 WSM Engine Service section III S 33 ...
Page 186: ...U20 3 U25 3 WSM Engine Service section III S 34 ...
Page 187: ...U20 3 U25 3 WSM Engine Service section III S 35 ...
Page 188: ...U20 3 U25 3 WSM Engine Service section III S 36 ...
Page 189: ...U20 3 U25 3 WSM Engine Service section III S 37 ...
Page 190: ...U20 3 U25 3 WSM Engine Service section III S 38 ...
Page 191: ...U20 3 U25 3 WSM Engine Service section III S 39 C Engine body CHECKING AND ADJUSTING ...
Page 192: ...U20 3 U25 3 WSM Engine Service section III S 40 DISASSEMBLING AND ASSEMBLING ...
Page 194: ...U20 3 U25 3 WSM Engine Service section III S 42 3 Cylinder head and valves ...
Page 195: ...U20 3 U25 3 WSM Engine Service section III S 43 ...
Page 196: ...U20 3 U25 3 WSM Engine Service section III S 44 4 Gear case ...
Page 197: ...U20 3 U25 3 WSM Engine Service section III S 45 ...
Page 198: ...U20 3 U25 3 WSM Engine Service section III S 46 ...
Page 199: ...U20 3 U25 3 WSM Engine Service section III S 47 ...
Page 200: ...U20 3 U25 3 WSM Engine Service section III S 48 ...
Page 201: ...U20 3 U25 3 WSM Engine Service section III S 49 ...
Page 202: ...U20 3 U25 3 WSM Engine Service section III S 50 5 Piston and connecting rod ...
Page 203: ...U20 3 U25 3 WSM Engine Service section III S 51 ...
Page 204: ...U20 3 U25 3 WSM Engine Service section III S 52 ...
Page 205: ...U20 3 U25 3 WSM Engine Service section III S 53 6 Flywheel and crankshaft ...
Page 206: ...U20 3 U25 3 WSM Engine Service section III S 54 ...
Page 207: ...U20 3 U25 3 WSM Engine Service section III S 55 SERVICING 1 Cylinder head ...
Page 208: ...U20 3 U25 3 WSM Engine Service section III S 56 ...
Page 209: ...U20 3 U25 3 WSM Engine Service section III S 57 ...
Page 210: ...U20 3 U25 3 WSM Engine Service section III S 58 ...
Page 211: ...U20 3 U25 3 WSM Engine Service section III S 59 ...
Page 212: ...U20 3 U25 3 WSM Engine Service section III S 60 2 Timing gear and camshaft ...
Page 213: ...U20 3 U25 3 WSM Engine Service section III S 61 ...
Page 214: ...U20 3 U25 3 WSM Engine Service section III S 62 3 Piston and connecting rod ...
Page 215: ...U20 3 U25 3 WSM Engine Service section III S 63 ...
Page 216: ...U20 3 U25 3 WSM Engine Service section III S 64 ...
Page 217: ...U20 3 U25 3 WSM Engine Service section III S 65 4 Crankshaft ...
Page 218: ...U20 3 U25 3 WSM Engine Service section III S 66 ...
Page 219: ...U20 3 U25 3 WSM Engine Service section III S 67 ...
Page 220: ...U20 3 U25 3 WSM Engine Service section III S 68 ...
Page 221: ...U20 3 U25 3 WSM Engine Service section III S 69 ...
Page 222: ...U20 3 U25 3 WSM Engine Service section III S 70 ...
Page 223: ...U20 3 U25 3 WSM Engine Service section III S 71 5 Cylinder ...
Page 224: ...U20 3 U25 3 WSM Engine Service section III S 72 ...
Page 226: ...U20 3 U25 3 WSM Engine Service section III S 74 ...
Page 228: ...U20 3 U25 3 WSM Engine Service section III S 76 DISASSEMBLING AND ASSEMBLING ...
Page 229: ...U20 3 U25 3 WSM Engine Service section III S 77 ...
Page 231: ...U20 3 U25 3 WSM Engine Service section III S 79 ...
Page 232: ...U20 3 U25 3 WSM Engine Service section III S 80 2 Injection nozzle ...
Page 233: ...U20 3 U25 3 WSM Engine Service section III S 81 DISASSEMBLING AND ASSEMBLING 1 Injection pump ...
Page 234: ...U20 3 U25 3 WSM Engine Service section III S 82 2 Injection nozzle ...
Page 235: ...U20 3 U25 3 WSM Engine Service section III S 83 G Electrical system CHECKING 1 Starter ...
Page 237: ...U20 3 U25 3 WSM Engine Service section III S 85 2 Alternator ...
Page 238: ...U20 3 U25 3 WSM Engine Service section III S 86 ...
Page 239: ...U20 3 U25 3 WSM Engine Service section III S 87 ...
Page 240: ...U20 3 U25 3 WSM Engine Service section III S 88 SERVICING 1 Starter ...
Page 241: ...U20 3 U25 3 WSM Engine Service section III S 89 ...
Page 242: ...U20 3 U25 3 WSM Engine Service section III S 90 2 Alternator ...
Page 243: ...U20 3 U25 3 WSM Engine Service section III S 91 ...
Page 244: ...U20 3 U25 3 WSM Engine Service section III S 92 ...
Page 245: ...U20 3 U25 3 WSM Engine Service section III S 93 H Turbo charger system CHECKING ...
Page 246: ...U20 3 U25 3 WSM Engine Service section III S 94 ...
Page 247: ...U20 3 U25 3 WSM Engine Service section III S 95 DISASSEMBLING AND ASSEMBLING ...
Page 248: ...U20 3 U25 3 WSM Engine Service section III S 96 ...
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Page 279: ...U20 3 U25 3 WSM Hydraulic system Mechanism section IV M 28 ...
Page 280: ...U20 3 U25 3 WSM Hydraulic system Mechanism section IV M 29 b Pilot valve control diagram ...
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Page 312: ...U20 3 U25 3 WSM Hydraulic system Mechanism section IV M 60 b U20 3 Retractable undercarriage ...
Page 313: ...U20 3 U25 3 WSM Hydraulic system Mechanism section IV M 61 c U25 3 ...
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Page 330: ...U20 3 U25 3 WSM Hydraulic system Service section IV S 15 1 Travel mechanism check points ...
Page 397: ...U20 3 U25 3 WSM Hydraulic system Service section IV S 82 ...
Page 415: ...U20 3 U25 3 WSM Hydraulic system Service section IV S 100 3 Component parts of wheel motor ...
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Page 480: ...U20 3 U25 3 WSM Electrical system Service section V S 3 a Front ...
Page 482: ...U20 3 U25 3 WSM Electrical system Service section V S 5 c Swivel frame ...
Page 483: ...U20 3 U25 3 WSM Electrical system Service section V S 6 Around battery ...
Page 486: ...U20 3 U25 3 WSM Electrical system Service section V S 9 3 Around selector valve ...
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