Komatsu PC290LC-6K PC290NLC-6K Hydraulic Excavator Index:

1. FOREWORD…………………………………………………………………………………………………………………….. 0-1
2. SAFETY INFORMATION ……………………………………………………………………………………………………. 0-2
3. INTRODUCTION ………………………………………………………………………………………………………………. 0-4
4. LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR ……………………….. 0-5
SAFETY
6. GENERAL PRECAUTIONS ………………………………………………………………………………………………… 1-2
7. PRECAUTIONS DURING OPERATION ……………………………………………………………………………….. 1-8
7.1 Before starting engine …………………………………………………………………………………………………… 1-8
7.2 Operating machine ……………………………………………………………………………………………………… 1-10
7.3 Transportation ……………………………………………………………………………………………………………. 1-15
7.4 Battery ………………………………………………………………………………………………………………………. 1-16
7.5 Towing ………………………………………………………………………………………………………………………. 1-17
7.6 Bucket with hook ………………………………………………………………………………………………………… 1-18
8. PRECAUTIONS FOR MAINTENANCE ………………………………………………………………………………. 1-21
8.1 Before carrying out maintenance ………………………………………………………………………………….. 1-21
8.2 During maintenance ……………………………………………………………………………………………………. 1-24
9. POSITION FOR ATTACHING SAFETY LABELS………………………………………………………………….. 1-28
OPERATION
10. GENERAL VIEW
10.1 General view of machine ……………………………………………………………………………………………. 2-2
10.2 General view of controls and gauges ……………………………………………………………………………. 2-3
11. EXPLANATION OF COMPONENTS
11.1 Machine monitor ……………………………………………………………………………………………………….. 2-4
11.2 Meter …………………………………………………………………………………………………………………….. 2-15
11.3 switches ………………………………………………………………………………………………………………… 2-16
11.4 Control levers, pedals ……………………………………………………………………………………………… 2-20
11.5 Ceiling window ……………………………………………………………………………………………………….. 2-25
11.6 Front window ………………………………………………………………………………………………………….. 2-26
11.7 Door lock ……………………………………………………………………………………………………………….. 2-28
11.8 Cap, cover with lock ………………………………………………………………………………………………… 2-29
11.9 Luggage tray ………………………………………………………………………………………………………….. 2-30
11.10 Ashtray ………………………………………………………………………………………………………………….. 2-30
11.11 Heater ……………………………………………………………………………………………………………………. 2-30
11.12 Air conditioner ………………………………………………………………………………………………………… 2-31
11.13 Car radio ……………………………………………………………………………………………………………….. 2-34
11.14 Fuse ……………………………………………………………………………………………………………………… 2-35
11.15 Fusible link …………………………………………………………………………………………………………….. 2-36
11.16 Controllers ……………………………………………………………………………………………………………… 2-36
11.17 Tool box …………………………………………………………………………………………………………………. 2-36
11.18 Refuelling pump ……………………………………………………………………………………………………… 2-36
11.19 Handling the accumulator ………………………………………………………………………………………… 2-37
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PC290-ENG
12. OPERATION
12.1 Check before starting engine ……………………………………………………………………………………. 2-39
12.2 Starting engine ……………………………………………………………………………………………………….. 2-49
12.3 Operations and checks after starting engine ………………………………………………………………. 2-52
12.4 Moving machine off …………………………………………………………………………………………………. 2-58
12.5 Steering machine ……………………………………………………………………………………………………. 2-61
12.6 Stopping machine …………………………………………………………………………………………………… 2-63
12.7 Swinging ……………………………………………………………………………………………………………….. 2-64
12.8 Operation of work equipment ……………………………………………………………………………………. 2-65
12.9 Handling active mode ………………………………………………………………………………………………. 2-66
12.10 Working mode selection …………………………………………………………………………………………. 2-68
12.11 Prohibitions for operation ………………………………………………………………………………………… 2-70
12.12 Precaution for operation ………………………………………………………………………………………….. 2-72
12.13 Precaution when travelling up or down hills ……………………………………………………………….. 2-73
12.14 How to escape from mud ………………………………………………………………………………………… 2-75
12.15 Work possible using hydraulic excavator …………………………………………………………………… 2-76
12.16 Replacement and inversion of bucket ……………………………………………………………………….. 2-77
12.17 Parking the machine ………………………………………………………………………………………………. 2-79
12.18 Check after finishing work ………………………………………………………………………………………… 2-80
12.19 Stopping engine ……………………………………………………………………………………………………… 2-81
12.20 Check after stopping engine …………………………………………………………………………………….. 2-82
12.21 Locking ………………………………………………………………………………………………………………….. 2-82
12.22 Overload warning device …………………………………………………………………………………………. 2-82
13 TRANSPORTATION
13.1 Loading, unloading work …………………………………………………………………………………………… 2-83
13.2 Precautions for loading …………………………………………………………………………………………….. 2-85
13.3 Precautions for transportation ……………………………………………………………………………………. 2-86
13.4 Lifting the machine …………………………………………………………………………………………………… 2-86
14. COLD WEATHER OPERATION
14.1 Precaution for low temperature ………………………………………………………………………………….. 2-87
14.2 Precautions after completion of work ………………………………………………………………………….. 2-89
14.3 After cold weather ……………………………………………………………………………………………………. 2-89
15. LONG-TERM STORAGE
15.1 Before storage ………………………………………………………………………………………………………… 2-90
15.2 Posture when leaving machine ………………………………………………………………………………….. 2-90
15.3 During storage ………………………………………………………………………………………………………… 2-91
15.4 After storage ……………………………………………………………………………………………………………. 2-91
15.5 Starting machine after long-term storage …………………………………………………………………….. 2-91
16. TROUBLESHOOTING
16.1 Phenomena that are not failures ………………………………………………………………………………… 2-92
16.2 Method of towing machine ………………………………………………………………………………………… 2-92
16.3 Using method for light-weight towing hole …………………………………………………………………… 2-92
16.4 Precautions on particular jobsites ………………………………………………………………………………. 2-93
16.5 If battery is discharged ……………………………………………………………………………………………… 2-93
16.6 Other trouble …………………………………………………………………………………………………………… 2-97

MAINTENANCE
17. GUIDES TO MAINTENANCE ……………………………………………………………………………………………… 3-2
18. OUTLINES OF SERVICE …………………………………………………………………………………………………… 3-5
18.1 Outline of oil, fuel, coolant ………………………………………………………………………………………….. 3-5
18.2 Outline of electric system …………………………………………………………………………………………… 3-9
18.3 Outline of hydraulic system ………………………………………………………………………………………. 3-10
19. WEAR PARTS LIST …………………………………………………………………………………………………………..3-11
20. USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE….. 3-12
PRECAUTIONS WHEN HANDLING ………………………………………………………………………………….. 3-17
TESTING AND ADJUSTING ……………………………………………………………………………………………… 3-19
PERIODIC MAINTENANCE ……………………………………………………………………………………………… 3-20
21. STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS …………………………………………… 3-21
21.1 Introduction of necessary tools ………………………………………………………………………………….. 3-21
21.2 Torque list ……………………………………………………………………………………………………………….. 3-22
22. PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS ………………………………………………… 3-23
23. MAINTENANCE SCHEDULE CHART ………………………………………………………………………………… 3-26
23.1 Maintenance schedule chart ……………………………………………………………………………………… 3-26
23.2 Maintenance interval when using hydraulic breaker ……………………………………………………… 3-28
24. SERVICE PROCEDURE ………………………………………………………………………………………………….. 3-29
24.1 Initial 250 hours service ……………………………………………………………………………………………. 3-29
24.2 When required ………………………………………………………………………………………………………… 3-30
24.3 Check before staring ………………………………………………………………………………………………… 3-46
24.4 Every 100 hours service …………………………………………………………………………………………… 3-51
24.5 Every 250 hours service …………………………………………………………………………………………… 3-55
24.6 Every 500 hours service …………………………………………………………………………………………… 3-59
24.7 Every 1000 hours service …………………………………………………………………………………………. 3-65
24.8 Every 2000 hours service …………………………………………………………………………………………. 3-68
24.9 Every 4000 hours service …………………………………………………………………………………………. 3-71
24.10 Every 5000 hours service ………………………………………………………………………………………… 3-72
SPECIFICATIONS
25. MACHINE SPECIFICATIONS……………………………………………………………………………………………… 4-2
25.1 Machine specifications ……………………………………………………………………………………………….. 4-2
25.2 Explanation of lifting capacity chart ………………………………………………………………………………. 4-6
TRANSPORTATION ………………………………………………………………………………………………………….. 4-9
COMPONENTS DIMENSIONS AND WEIGHTS (Approximate) • (Two Piece Boom) ………………… 4-10
5. CONTENTS
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PC290-ENG
OPTIONS AND ATTACHMENTS
26 GENERAL PRECAUTIONS ………………………………………………………………………………………………… 5-2
26.1 General precautions related to safety ……………………………………………………………………………. 5-2
26.2 Precautions when installing attachments ……………………………………………………………………….. 5-3
27. HANDLING BUCKET WITH HOOK ……………………………………………………………………………………… 5-4
27.1 Checking for damage to bucket with hook ……………………………………………………………………… 5-4
27.2 Prohibited operations ………………………………………………………………………………………………….. 5-4
27.3 Precautions during operation ……………………………………………………………………………………….. 5-4
28 MACHINE READY FOR ATTACHMENTS …………………………………………………………………………….. 5-5
28.1 Explanation of components………………………………………………………………………………………….. 5-5
28.2 Hydraulic circuit ………………………………………………………………………………………………………….. 5-7
28.3 Attachment mounting / dismounting procedure……………………………………………………………….. 5-9
28.4 Operation ………………………………………………………………………………………………………………….5-11
28.5 Long-term storage …………………………………………………………………………………………………….. 5-12
28.6 Specifications …………………………………………………………………………………………………………… 5-12
28.7 First attachment with clam-shell option ……………………………………………………………………… 5-12-1
28.8 First and second attachment ……………………………………………………………………………………. 5-12-2
29. INTRODUCTION OF ATTACHMENTS ……………………………………………………………………………….. 5-13
29.1 Specification, use ……………………………………………………………………………………………………… 5-13
29.2 Attachment installing combination table ……………………………………………………………………….. 5-14
29.3 Selection of track shoes …………………………………………………………………………………………….. 5-15
29.4 Selection of bucket teeth ……………………………………………………………………………………………. 5-16
29.5 Handling trapezoidal bucket ……………………………………………………………………………………….. 5-17
29.6 Using the extension arm ……………………………………………………………………………………………. 5-18
29.7 Handling the clamshell bucket ……………………………………………………………………………………. 5-19
30. EXTENDING MACHINE SERVICE LIFT …………………………………………………………………………….. 5-20
30.1 Hydraulic breaker ……………………………………………………………………………………………………… 5-20
30.2 Power ripper …………………………………………………………………………………………………………….. 5-23
30.3 Fork grab …………………………………………………………………………………………………………………. 5-24
30.4 Grapple bucket …………………………………………………………………………………………………………. 5-25
30.5 Scrap grapple …………………………………………………………………………………………………………… 5-26
30.6 Crusher & cutter ……………………………………………………………………………………………………….. 5-27
30.7 Hydraulic pile driver ………………………………………………………………………………………………….. 5-28
30.8 Hydraulic excavator with multi-purpose crane ………………………………………………………………. 5