Complete service repair manual with Electrical Wiring Diagrams for Komatsu Hydraulic Excavator PC50UU, with all the technical information to maintain, diagnose, repair, rebuild like professional mechanics.
Komatsu Hydraulic Excavator PC50UU-1, PC50UU-2 workshop service repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
SEBM020U0104 – Hydraulic Excavator PC50UU-1 Shop Manual.pdf
SEBM000906 – Hydraulic Excavator PC50UU-2 Shop Manual.pdf
SEAM020U0100 – Hydraulic Excavator PC50UU-1 Operation & Maintenance Manual.pdf
SEAM020U0101 – Hydraulic Excavator PC50UU-1 Operation & Maintenance Manual.pdf
SEAM005500 – Hydraulic Excavator PC50UU-2 Operation & Maintenance Manual.pdf
SEAM005503T – Hydraulic Excavator PC50UU-2 Operation & Maintenance Manual.pdf
SEAM034800 – Hydraulic Excavator PC28UU-2 Operation & Maintenance Manual.pdf
PRODUCT DETAILS:
Total Pages: 1,895 pages
File Format: PDF
Language: English
SEAM005500 – Hydraulic Excavator PC50UU-2 Operation & Maintenance Manual…2
COVER…2
1. FOREWORD…3
2. SAFETY INFORMATION…4
3. INTRODUCTION…5
4. LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR…6
CONTENTS…7
SAFETY…12
6. General Precautions…13
7. Precautions During Operation…18
7.1 Before Starting Engine…18
7.2 Operating Machine…20
7.3 Transportation…25
7.4 Battery…26
7.5 Towing…27
8. Precautions for Maintenance…28
8.1 Before Carrying Out Maintenance…28
8.2 During Maintenance…31
9. Position for Attaching Safety Labels…35
OPERATION…40
10. General View…41
10.1 General View of Machine…41
10.2 General View of Controls and Gauges…42
11. Explanation of Components…43
11.1 Machine Monitor…44
11.2 Switches…50
11.3 Control Levers and Pedals…53
11.4 Engine Hood…57
11.5 Front Window…58
11.6 Sliding Door…60
11.7 Fuse Box…61
11.8 Fusible Link…61
11.9 Cap with Lock, Cover…62
11.10 Tool Box…63
11.11 Grease Gun Holder…63
12. Operation…64
12.1 Check Before Starting Engine…64
12.2 Starting Engine…72
12.3 Operations and Checks After Starting Engine…74
12.4 Moving Machine Off…77
12.5 Steering Machine…79
12.6 Stopping Machine…81
12.7 Swinging…82
12.8 Prohibitions for Operation…83
12.9 Precautions for Operation…85
12.10 Precautions when Traveling Up or Down Hills…86
12.11 Work Possible Using Hydraulic Excavator…88
12.12 Parking Machine…90
12.13 Check After Finishing Work…91
12.14 Stopping Engine…91
12.15 Check After Stopping Engine…92
12.16 Locking…92
12.17 How to Excape From Mud…93
12.18 Replacement of Bucket…94
12.19 Handling 4-System…96
12.20 Handling Rubber Shoes (Rubber Shoes Only)…106
13. Transportation…111
13.1 Loading, Unloading Work…111
13.2 Method for Lifting Chassis…113
13.3 Precautions for Loading…115
13.4 Precautions for Transportation…116
14. Cold Weather Operation…117
14.1 Precautions for Low Temperature…117
14.2 Cautions After Completion of Work…119
14.3 Preparing the Cab Heater…120
14.4 After Cold Weather…120
15. Long-term Storage…121
15.1 Before Storage…121
15.2 During Storage…122
15.3 After Storage…122
16. Troubleshooting…123
16.1 Phenomena That Are Not Failures…123
16.2 Method of Towing Machine…125
16.3 Precautions on Particular Jobsites…125
16.4 If Battery is Discharged…126
16.5 Other Trouble…130
MAINTENANCE…136
17. Guides to Maintenance…137
18. Outlines of Service…140
18.1 Outline of Oil, Fuel, Coolant…140
18.2 Relating to Electric System…143
19. Wear Parts List…144
20. Use of Fuel, Coolant and Lubricants According to Ambient Temperature…145
21. Standard Tightening Torbues for Bolts and Nuts…149
21.1 Introduction of Necessary Tools…149
21.2 Torque List…150
22. Periodic Replacement of Safety Critical Parts…151
23. Maintenance Schedule Chart…153
23.1 Maintenance Schedule Chart…153
24. Service Procedure…156
24.1 Initial 250 Hours Service (only after the first 250 hours)…156
Engine Valve Clearance, Check and Adjust…156
24.2 When Required…157
Check, Clean and Replace Air Cleaner Element…157
Clean Inside of Cooling System…160
Drain Water, Sediment from Fuel Tank…164
Check Level of Battery Electrolyte…165
Clean Water Separator Element…166
Check Electric Wirings…167
Check Rubber Shoes (machine equipped with rubber shoes)…168
Check and Adjust Track Tension (machine equipped with rubber shoes)…170
Replace Rubber Shoes (machine equipped with rubber shoes)…173
Check and Adjust Track Tension (machine equipped with steel shoes)…176
Replace Bucket Teeth…179
Adjust Bucket Clearance…180
24.3 Check Before Starting…181
Check and Refill Coolant…181
Check Oil Level in Engine Oil Pan, Add Oil…181
Check Fuel Level…182
Check Oil Level in Hydraulic Tank, Add Oil…183
Check Dust Indicator…184
Check Water Separator…184
24.4 Every 100 Hours Service…185
Lubricating…185
Swing Circle (1 point)…185
Swing Pinion (1 point)…185
Blade Cylinder Foot Pin ( 1 point)…185
Blade Cylinder Rod End ( 1 point)…185
Blade Foot Pin ( 2 points)…185
First Boom Foot Pin ( 2 points)…185
Boom Cylinder Foot Pin ( 1 point)…185
Boom Cylinder Rod End ( 1 point)…185
First Boom – Second Boom Coupling Pin ( 2 points)…185
Offset Cylinder Foot Pin ( 1 point)…186
Offset Cylinder Rod End Pin ( 1 point)…186
Sub-link Coupling Pin ( 2 points)…186
Second Boom – Third Bracket Coupling Pin ( 2 points )…186
Arm Cylinder Foot Pin ( 2 points )…186
Arm Cylinder Rod End Pin ( 1 point)…186
Third Bracket – Arm Coupling Pin ( 2 points )…186
Bucket Cylinder Foot Pin ( 1 point )…186
Bucket Cylinder Rod End Pin ( 1 point )…186
Arm-Link Coupling Pin ( 1 point )…186
Link Coupling Pin ( 1 point )…186
Bucket-Link Coupling Pin ( 1 point )…186
Arm-Bucket Coupling Pin ( 1 point )…186
24.5 Every 250 Hours Service…187
Change Oil in Engine Oil Pan, Replace Engine Oil Filter Cartridge…187
Check Oil Level in Final Drive Case, Add Oil…189
Replace Hydraulic Filter Element…190
Check Fan Belt Tension, Adjust…192
24.6 Every 500 Hours Serv ice…193
Replace Fuel Filter Cartridge…193
Clean, Check Radiator Fins…195
24.7 Every 1000 Hours Service…196
Change Oil in Swing Machinery Case…196
Change Oil in Final Drive Case…197
24.8 Every 2000 Hours Service…198
Change Oil in Hydraulic Tank, Clean Strainer…198
Check Alternator, Starting Motor…200
Check Engine Valve Clearance, Adjust…200
SPECIFICATIONS…202
25. Specifications…203
OPTION, ATTACHMENT…206
26. Using Car Radio…207
26.1 Explanation of Parts…207
26.2 Method of Use…209
26.3 Precautions for Use…210
26.4 Specifications…211
27. Using Car Cooler…212
27.1 Control Panel…212
27.2 Precautions When Using…212
27.3 Inspection and Maintenance of Car Cooler…213
28. Handling Window Washer…215
28.1 Operation of Window Washer…215
28.2 Check Window Washer Fluid, Add Fluid…215
29. General Precautions…216
29.1 Precautions Related to Safety…216
30. Introduction of Attachments…217
30.1 Specification, Use…217
30.2 Precautions When installing Attachments…218
30.3 Replacing Bucket Teeth ( bucket with vertical pin type tooth )…219
30.4 Precautions When Using Hydraulic Breaker…222
31. Machines Able to Install Attachments…225
31.1 Explanation of Equipment…225
31.2 Hydraulic Circuit…227
31.3 Operation…228
31.4 Long-term Storage…229
31.5 Specifications…229
SEAM005503T – Hydraulic Excavator PC50UU-2 Operation & Maintenance Manual…230
COVER…230
1. FOREWORD…231
2. SAFETY INFORMATION…234
3. INTRODUCTION…235
4. LOCATION OF PLATES,TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR…236
5. CONTENTS…237
SAFETY…241
6. GENERAL PRECAUTIONS…242
7. PRECAUTIONS DURING OPERATION…247
7.1 BEFORE STARTING ENGINE…247
7.2 OPERATING MACHINE…249
7.3 TRANSPORTATION…254
7.4 BATTERY…255
7.5 TOWING…256
8. PRECAUTIONS FOR MAINTENANCE…257
8.1 BEFORE CARRYING OUT MAINTENANCE…257
8.2 DURING MAINTENANCE…260
9. POSITION FOR ATTACHING SAFETY LABELS…264
OPERATION…268
10. GENERAL VIEW…269
10.1 GENERAL VIEW OF MACHINE…269
10.2 GENERAL VIEW OF CONTROLS AND GAUGES…270
11. EXPLANATION OF COMPONENTS…271
11.1 MACHINE MONITOR…272
11.2 SWITCHES…278
11.3 CONTROL LEVERS AND PEDALS…281
11.4 ENGINE HOOD…285
11.5 FRONT WINDOW…286
11.6 SLIDING DOOR…288
11.7 FUSE BOX…289
11.8 FUSIBLE LINK…289
11.9 CAP WITH LOCK,COVER…290
11.10 TOOL BOX…291
11.11 GREASE GUN HOLDER…291
12. OPERATION…292
12.1 CHECK BEFORE STARTING ENGINE…292
12.2 STARTING ENGINE…300
12.3 OPERATIONS AND CHECKS AFTER STARTING ENGINE…302
12.4 MOVING MACHINE OFF…305
12.5 STEERING MACHINE…307
12.6 STOPPING MACHINE…309
12.7 SWINGING…310
12.8 PROHIBITIONS FOR OPERATION…311
12.9 PRECAUTIONS FOR OPERATION…313
12.10 PRECAUTIONS WHEN TRAVELING UP OR DOWN HILLS…314
12.11 WORK POSSIBLE USING HYDRAULIC EXCAVATOR…316
12.12 PARKING MACHINE…318
12.13 CHECK AFTER FINISHING WORK…319
12.14 STOPPING ENGINE…319
12.15 CHECK AFTER STOPPING ENGINE…320
12.16 LOCKING…320
12.17 HOW TO ESCAPE FROM MUD…321
12.18 REPLACEMENT OF BUCKET…322
12.19 HANDLING 4-SYSTEM…324
12.20 HANDLING RUBBER SHOES (RUBBER SHOES ONLY)…334
13. TRANSPORTATION…339
13.1 LOADING, UNLOADING WORK…339
13.2 METHOD OF LIFTING CHASSIS…341
13.3 PRECAUTIONS FOR LOADING…343
13.4 PRECAUTIONS FOR TRANSPORTATION…344
14. COLD WEATHER OPERATION…345
14.1 PRECAUTIONS FOR LOW TEMPERATURE…345
14.2 COUTIONS AFTER COMPLETION OF WORK…347
14.3 PREPARING THE CAB HEATER…348
14.4 AFTER COLD WEATHER…348
15. LONG-TERM STORAGE…349
15.1 BEFORE STORAGE…349
15.2 DURING STORAGE…350
15.3 AFTER STORAGE…350
16. TROUBLESHOOTING…351
16.1 PHENOMENA THAT ARE NOT FAILURES…351
16.2 METHOD OF TOWING MACHINE…353
16.3 PRECAUTIONS ON PARTICULAR JOBSITES…353
16.4 IF BATTERY IS DISCHARGED…354
16.5 OTHER TROUBLE…358
MAINTENANCE…363
17. GUIDES TO MAINTENANCE…364
18. OUTLINES OF SERVICE…367
18.1 OUTLINE OF OIL,FUEL,COOLANT…367
18.2 RELATING TO ELECTRIC SYSTEM…370
19. WEAR PARTS LIST…371
20. USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE…372
21. STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS…376
21.1 INTRODUCTION OF NECESSARY TOOLS…376
21.2 TORQUE LIST…377
22. PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS…378
23. MAINTENANCE SCHEDULE CHART…380
24. SERVICE PROCEDURE…383
24.1 INITIAL 250 HOURS SERVICE…383
24.2 WHEN REQUIRED…384
24.3 CHECK BEFORE STARTING…408
24.4 EVERY 100 HOURS SERVICE…412
24.5 EVERY 250 HOURS SERVICE…413
24.6 EVERY 500 HOURS SERVICE…419
24.7 EVERY 1000 HOURS SERVICE…424
24.8 EVERY 2000 HOURS SERVICE…425
24.9 EVERY 4000 HOURS SERVICE…426
SPECIFICATIONS…429
25. SPECIFICATIONS…430
OPTIONS,ATTACHMENTS…433
26. USING CAR RADIO…434
26.1 EXPLANATION OF PARTS…434
26.2 METHOD OF USE…436
26.3 PRECAUTIONS FOR USE…437
26.4 SPECIFICATIONS…438
27. USING CAR COOLER…439
27.1 CONTROL PANEL…439
27.2 PRECAUTIONS WHEN USING…439
27.3 INSPECTION AND MAINTENANCE OF CAR COOLER…440
28. HANDLING WINDOW WASHER…442
28.1 OPERATION OF WINDOW WASHER…442
28.2 CHECK WINDOW WASHER FLUID,ADD FLUID…442
29. GENERAL PRECAUTIONS…443
29.1 PRECAUTIONS RELATED TO SAFETY…443
30. INTRODUCTION OF ATTACHMENTS…444
30.1 SPECIFICATION,USE…444
30.2 PRECAUTIONS WHEN INSTALLING ATTACHMENTS…445
30.3 REPLACING BUCKET TEETH (BUCKET WITH VERTICAL PIN TYPE TOOTH)…446
30.4 PRECAUTIONS WHEN USING HYDRAULIC BREAKER…449
31. MACHINES ABLE TO INSTALL ATTACHMENTS…452
31.1 EXPLANATION OF EQUIPMENT…452
31.2 HYDRAULIC CIRCUIT…454
31.3 OPERATION…455
31.4 LONG-TERM STORAGE…456
31.5 SPECIFICATIONS…456
SEAM020U0100 – Hydraulic Excavator PC50UU-1 Operation & Maintenance Manual…458
COVER…458
FOREWORD…459
BREAKING IN YOUR NEW MACHINE…460
CONTENTS…461
GENERAL LOCATIONS AND SPECIFICATIONS…462
INSTRUMENTS AND CONTROLS…463
CHECK BEFORE STARTING…475
OPERATING YOUR MACHINE…479
REPLACEMENT OF BUCKET…493
COLD WEATHER OPERATION…494
PERIODIC MAINTENANCE…498
MAINTENANCE TABLE…499
OIL FILLER AND LEVEL GAUGE POSITIONS…502
EVERY 50 HOURS SERVICE…503
EVERY 100 HOURS SERVICE…504
INITIAL 250 HOURS SERVICE…507
EVERY 250 HOURS SERVICE…507
EVERY 500 HOURS SERVICE…512
EVERY 1000 HOURS SERVICE…515
EVERY 2000 HOURS SERVICE…517
WHEN REQUIRED…519
TROUBLE SHOOTING GUIDE…525
SERVICE METER…528
MACHINE AND ENGINE SERIAL NUMBERS…529
FUEL,COOLANT AND LUBRICANTS…530
SAFETY AND OPERATION…532
CONTENTS…533
SAFETY HINTS…534
EXCAVATOR'S WORK…543
HANDLING OF BATTERY…544
TRANSPORTATION…547
PRECAUTIONS FOR MAINTENANCE…549
STORAGE…554
COOLANT AND LUBRICANTS…556
SEAM020U0101 – Hydraulic Excavator PC50UU-1 Operation & Maintenance Manual…558
COVER…558
FOREWORD…559
BREAKING IN YOUR NEW MACHINE…560
CONTENTS…561
GENERAL LOCATIONS AND SPECIFICATIONS…562
INSTRUMENTS AND CONTROLS…563
CHECK BEFORE STARTING…576
OPERATING YOUR MACHINE…581
REPLACEMENT OF BUCKET…596
COLD WEATHER OPERATION…597
PERIODIC MAINTENANCE…601
PERIODICAL REPLACEMENT OF SAFETY PARTS…602
MAINTENANCE TABLE…604
OIL FILLER AND LEVEL GAUGE POSITIONS…607
EVERY 50 HOURS SERVICE…608
EVERY 100 HOURS SERVICE…609
INITIAL 250 HOURS SERVICE…612
EVERY 250 HOURS SERVICE…612
EVERY 500 HOURS SERVICE…617
EVERY 1000 HOURS SERVICE…620
EVERY 2000 HOURS SERVICE…622
WHEN REQUIRED…624
HANDLING RUBBER SHOES…630
TROUBLE SHOOTING GUIDE…635
SERVICE METER…638
MACHINE AND ENGINE SERIAL NUMBERS…639
FUEL,COOLANT AND LUBRICANTS…640
SAFETY AND OPERATION…642
CONTENTS…643
SAFETY HINTS…644
EXCAVATOR'S WORK…653
HANDLING OF BATTERY…654
TRANSPORTATION…657
METHOD OF RAISING THE MACHINE…659
PRECAUTIONS FOR MAINTENANCE…660
STORAGE…665
COOLANT AND LUBRICANTS…667
SEAM034800 – Hydraulic Excavator PC28UU-2 Operation & Maintenance Manual…669
COVER…669
1. FOREWORD…670
2. SAFETY INFORMATION…671
3. INTRODUCTION…672
4. LOCATION OF PLATES,TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR…673
5. CONTENTS…674
SAFETY…678
6. GENERAL PRECAUTIONS…679
7. PRECAUTION DURING OPERATION…684
7.1 BEFORE STARTING ENGINE…684
7.2 OPERATING MACHINE…686
7.3 TRANSPORTATION…691
7.4 BATTERY…692
7.5 TOWING…693
8. PRECAUTIONS FOR MAINTENANCE…694
8.1 BEFORE CARRYING OUT MAINTENANCE…694
8.2 DURING MAINTENANCE…697
9. POSITION FOR ATTACHING SAFETY LABELS…701
9.1 POSITION FOR ATTACHING SAFETY LABELS…701
OPERATION…704
10. GENERAL VIEW…705
10.1 GENERAL VIEW OF MACHINE…705
10.2 GENERAL VIEW OF CONTROLS AND GAUGES…706
11. EXPLANATION OF COMPONENTS…707
11.1 MACHINE MONITOR…708
11.2 SWITCHES…714
11.3 CONTROL LEVERS AND PEDALS…716
11.4 ENGINE HOOD…720
11.5 FUSE BOX…721
11.6 FUSIBLE LINK…721
11.7 COVER WITH LOCK…722
11.8 TOOL BOX…723
11.9 GREASE GUN HOLDER…723
12. OPERATION…724
12.1 CHECK BEFORE STARTING ENGINE…724
12.2 STARTING ENGINE…731
12.3 OPERATIONS AND CHECKS AFTER STARTING ENGINE…733
12.4 MOVING MACHINE OFF…736
12.5 STEERING MACHINE…738
12.6 STOPPING MACHINE…740
12.7 SWINGING…741
12.8 PROHIBITIONS FOR OPERATION…742
12.9 PRECAUTIONS FOR OPERATION…744
12.10 PRECAUTIONS WHEN TRAVELING UP OR DOWN HILLS…745
12.11 WORK POSSIBLE USING HYDRAULIC EXCAVATOR…747
12.12 PARKING MACHINE…749
12.13 CHECK AFTER FINISHING WORK…750
12.14 STOPPING ENGINE…750
12.15 CHECK AFTER STOPPING ENGINE…751
12.16 LOCKING…751
12.17 HOW TO ESCAPE FROM MUD…752
12.18 REPLACEMENT OF BUCKET…753
12.19 HANDLING 4-SYSTEM…755
12.20 HANDLING RUBBER SHOES (RUBBER SHOES ONLY)…765
13. TRANSPORTATION…770
13.1 LOADING,UNLOADING WORK…770
13.2 METHOD FOR LIFTING CHASSIS…772
13.3 PRECAUTIONS FOR LOADING…774
13.4 PRECAUTIONS FOR TRANSPORTATION…775
14. COLD WEATHER OPERATION…776
14.1 PRECAUTIONS FOR LOW TEMPERATURE…776
14.2 CAUTIONS AFTER COMPLETION OF WORK…778
14.3 PREPARING THE CAB HEATER (IF EQUIPPED)…779
14.4 AFTER COLD WEATHER…779
15. LONG-TERM STORAGE…780
15.1 BEFORE STORAGE…780
15.2 DURING STORAGE…781
15.3 AFTER STORAGE…781
16. TROUBLESHOOTING…782
16.1 PHENOMENA THAT ARE NOT FAILURES…782
16.2 METHOD OF TOWING MACHINE…784
16.3 PRECAUTIONS ON PARTICULAR JOBSITES…784
16.4 IF BATTERY IS DISCHARGED…785
16.5 OTHER TROUBLE…789
MAINTENANCE…794
17. GUIDES TO MAINTENANCE…795
18. OUTLINES OF SERVICE…798
18.1 OUTLINE OF OIL,FUEL,COOLANT…798
18.2 RELATING TO ELECTRIC SYSTEM…801
19. WEAR PARTS LIST…802
20. USE OF FUEL,COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE…803
21. STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS…807
21.1 INTRODUCTION OF NECESSARY TOOLS…807
21.2 TORQUE LIST…808
22. PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS…809
23. MAINTENANCE SCHEDULE CHART…811
23.1 MAINTENANCE SCHEDULE CHART…811
24. SERVICE PROCEDURE…814
24.1 INITIAL 250 HOURS SERVICE…814
24.2 WHEN REQUIRED…815
24.3 CHECK BEFORE STARTING…838
24.4 EVERY 100 HOURS SERVICE…842
24.5 EVERY 250 HOURS SERVICE…844
24.6 EVERY 500 HOURS SERVICE…849
24.7 EVERY 1000 HOURS SERVICE…852
24.8 EVERY 2000 HOURS SERVICE…854
SPECIFICATIONS…857
25. SPECIFICATIONS…858
OPTIONS,ATTACHMENTS…861
26. GENERAL PRECAUTIONS…862
26.1 PRECAUTIONS RELATED TO SAFETY…862
27. HANDLING BUCKET WITH HOOK…863
27.1 CHECKING FOR DAMAGE TO BUCKET WITH HOOK…863
27.2 PROHIBITED OPERATIONS…863
27.3 PRECAUTIONS DURING OPERATIONS…863
28. INTRODUCTION OF ATTACHMENTS…864
28.1 SPECIFICATION,USE…864
28.2 PRECAUTIONS WHEN INSTALLING ATTACHMENTS…865
28.3 HANDLING POWER TILT,MECHANICAL ANGLE BLADE…866
SEBM020U0104 – Hydraulic Excavator PC50UU-1 Shop Manual…1710
COVER…1710
CONTENTS…1711
10 STRUCTURE AND FUNCTION…1724
POWER TRAIN…1725
SWING MACHINERY…1726
SWING CIRCLE…1727
TRACK FRAME AND RECOIL SPRING…1728
IDLER…1730
TRACK ROLLER…1731
TRACK SHOE…1732
HYDRAULIC PIPING…1733
HYDRAULIC CIRCUIT SCHEMATICS…1734
HYDRAULIC CIRCUIT DIAGRAM…1736
HYDRAULIC TANK AND FUEL TANK…1738
HYDRAULIC PUMP…1739
6-SPOOL CONTROL VALVE…1740
3-SPOOL CONTROL VALVE…1744
SUCTION VALVE…1747
SWING MOTOR…1749
CENTER SWIVEL JOINT…1750
TRAVEL MOTOR WITH REDUCTION GEAR…1751
1. TRAVEL MOTOR AND FINAL DRIVE…1752
2. BRAKE VALVE…1755
HYDRAULIC CYLINDER…1757
WORK EQUIPMENT CONTROL…1760
WORK EQUIPMENT…1761
ELECTRICAL CIRCUIT…1762
20 TESTING AND ADJUSTING…1764
TABLE OF JUDGEMENT STANDARD VALUE…1765
TESTING AND ADJUSTING TOOL LIST…1780
ADJUSTING VALVE CLEARANCE…1781
MEASURING COMPRESSION PRESSURE…1782
ADJUSTING FUEL INJECTION TIMING…1783
TESTING AND ADJUSTING HYDRAULIC PRESSURE…1784
MEASURING OIL LEAKAGE FROM SWING AND TRAVEL MOTOR…1786
MEASURING OIL LEAKAGE FROM CYLINDER…1787
CHECKING FOR OIL LEAKAGE FROM SWIVEL JOINT…1788
TROUBLESHOOTING…1789
PREPARATION OF TROUBLESHOOTING…1790
HOW TO USE DIAGNOSTIC TABLE…1792
PREVENTING RECURRENCE OF THE SAME TROUBLE…1794
DIAGNOSTIC TABLE…1795
1.BUCKET CURL(DUMP)LACKS POWER OR SPEED…1795
2.ARM(BOOM)LACKS POWER OR SPEED…1796
3.IMPOSSIBLE TO CURL OR DUMP BUCKET…1797
4.IMPOSSIBLE TO MOVE WORK EQUPIMENT(BOOM,ARM)…1798
5.HYDRAULIC DRIFT OF WORK EQUIPMENT IS EXCESSIVE(BOOM,ARM,BUCKET,BLADE)…1799
6.BLADE,BOOM,OFFSET SPEED TOO LOW…1800
7.BLADE,BOOM,OFFSET DO NOT MOVE…1801
8.LEFT(OR RIGHT)SWING LACKS POWER OR SPEED…1802
9.IMPOSSIBLE TO SWING TO LEFT(OR RIGHT)…1803
10.HYDRAULIC DRIFT OF SWING ON SLOPES IS EXCESSIVE…1804
11.SWING BRAKE ANGLE IS EXCESSIVE…1805
12.MACHINE DEVIATES TO ONE SIDE WHEN TRAVELING…1806
13.IMPOSSIBLE TO TRAVEL FORWARD(OR REVERSE)…1807
30 DISASSEMBLY AND ASSEMBLY…1808
METHOD OF READING MANUAL…1810
SPECIAL TOOL LIST…1812
WEIGHT TABLE…1814
TIGHTENING TORQUE TABLE…1815
LIST OF LUBRICANT AND WATER…1817
STARTING MOTOR…1818
REMOVAL…1818
INSTALLATION…1818
ALTERNATOR…1818
REMOVAL…1818
INSTALLATION…1818
NOZZLE HOLDER…1820
REMOVAL…1820
INSTALLATION…1820
RADIATOR…1820
REMOVAL…1820
INSTALLATION…1820
FUEL INJECTION PUMP…1822
REMOVAL…1822
INSTALLATION…1822
CYLINDER HEAD…1824
REMOVAL…1824
INSTALLAION…1824
FAN PULLEY…1826
REMOVAL…1826
INSTALLATION…1826
WATER PUMP…1826
REMOVAL…1826
INSTALLATION…1826
THERMOSTAT…1826
REMOVAL…1826
INSTALLATION…1826
ENGINE…1828
REMOVAL…1828
INSTALLATION…1828
SWING CIRCLE…1830
REMOVAL…1830
INSTALLATION…1830
SWING MACHINERY…1830
REMOVAL…1830
INSTALLATION…1830
DISASSEMBLY…1832
ASSEMBLY…1834
CENTER SWIVEL JOINT…1836
REMOVAL…1836
INSTALLATION…1836
DISASSEMBLY…1836
ASSEMBLY…1836
SWING MOTOR…1838
REMOVAL…1838
INSTALLATION…1838
TRAVEL MOTOR…1838
REMOVAL…1838
INSTALLATION…1838
REVOLVING FRAME…1840
REMOVAL…1840
INSTALLATION…1840
IDLER…1842
REMOVAL…1842
INSTALLATION…1842
RECOIL SPRING…1842
REMOVAL…1842
INSTALLAION…1842
DISASSEMBLY…1842
ASSEMBLY…1842
TRACK ROLLER…1844
REMOVAL…1844
INSTALLATION…1844
TRACK SHOE…1846
REMOVAL…1846
INSTALLAION…1846
HYDRAULIC PUMP…1848
REMOVAL…1848
INSTALLATION…1848
6-SPOOL CONTROL VALVE…1850
REMOVAL…1850
INSTALLATION…1850
3-SPOOL CONTROL VALVE…1850
REMOVAL…1850
INSTALLATION…1850
6-SPOOL CONTROL VALVE…1852
DISASSEMBLY…1852
ASSEMBLY…1852
3-SPOOL CONTROL VALVE…1854
DISASSEMBLY…1854
ASSEMBLY…1854
MAIN RELIEF VALVE…1856
REMOVAL…1856
INSTALLATION…1856
DISASSEMBLY…1856
ASSEMBLY…1856
BOOM CYLINDER…1858
REMOVAL…1858
INSTALLATION…1858
ARM CYLINDER…1858
REMOVAL…1858
INSTALLATION…1858
BUCKET CYLINDER …1860
REMOVAL…1860
INSTALLATION…1860
BLADE CYLINDER…1860
REMOVAL…1860
INSTALLATION…1860
OFFSET CYLINDER…1862
REMOVAL…1862
INSTALLATION…1862
HYDRAULIC CYLINDER…1864
DISASSEMBLY…1864
ASSEMBLY…1866
WORK EQUIPMENT…1868
REMOVAL…1868
INSTALLATION…1868
BLADE…1868
REMOVAL…1868
INSTALLATION…1868
ARM AND BUCKET…1870
REMOVAL…1870
INSTALLATION…1870
BUCKET …1870
REMOVAL…1870
INSTALLATION…1870
ARM…1872
REMOVAL…1872
INSTALLATION…1872
BOOM …1874
REMOVAL…1874
INSTALLATION…1874
SECOND BOOM…1876
REMOVAL…1876
INSTALLATION…1876
THIRD BOOM…1876
REMOVAL…1876
INSTALLATION…1876
SECONG AND THIRD BOOM(WITH ARM CYLINDER ASSEMBLY)…1878
REMOVAL…1878
INSTALLATION…1878
FLOOR FRAME…1878
REMOVAL…1878
INSTALLATION…1878
40 MAINTENANCE STANDARD…1880
SWING MACHINERY…1881
SWING CIRCLE…1882
TRACK FRAME…1883
IDLER…1885
TRACK ROLLER…1887
TRACK SHOE…1889
SPROCKET…1890
HYDRAULIC PUMP…1891
6-SPOOL CONTROL VALVE…1892
3-SPOOL CONTROL VALVE…1894
CENTER SWIVEL JOINT…1895
HYDRAULIC CYLINDER…1896
WORK EQUIPMENT…1897
Komatsu Hydraulic Excavator PC50UU Repair Service Manuals