Description
Komatsu PC490LC-10 High Reach Deamon Hydraulic Excavator Shop Manual (UENBM00370)
Komatsu PC490LC-10 High Reach Deamon Hydraulic Excavator Index:
Table of contents 1
00 Table of Contents
00 Table of Contents
Table of contents …………………………………………………………………………………………………………………. 2
01 Specification
Specification and technical data High Reach Demolition
Specifications Drawings ……………………………………………………………………………………………………….. 2
Working range drawings……………………………………………………………………………………………………….. 4
Specifications – Hydraulic System ………………………………………………………………………………………… 10
Weight Table (HRD unique components) ………………………………………………………………………………..11
10 Structure, function and maintenance standard
Hydraulic system – High reach demolition 2
Hydraulic component layout – High reach demolition work equipment…………………………………………. 2
Hydraulic component layout – Medium reach demolition work equipment ……………………………………. 4
Hydraulic component layout – Demolition digging work equipment……………………………………………… 6
Valve Control ………………………………………………………………………………………………………………………. 8
Control valve ………………………………………………………………………………………………………………………. 9
Hydraulic circuit diagram and valve names……………………………………………………………………………. 18
Arm Direction solenoid valve……………………………………………………………………………………………….. 21
1st Service/Link Pedal Changeover Valve …………………………………………………………………………….. 22
Swing Speed Reduction Valves……………………………………………………………………………………………. 24
Boom and Bucket PPC Reduction ……………………………………………………………………………………….. 26
Tilting Cab System …………………………………………………………………………………………………………….. 28
Hydraulic Pin (Work Equipment Changeover)………………………………………………………………………… 30
Work Equipment – High Reach Demolition Unique 32
Work Equipment – High Reach Demolition Unique …………………………………………………………………. 32
Work Equipment – Medium Reach Demolition ……………………………………………………………………….. 33
Work Equipment – Demolition Digging ………………………………………………………………………………….. 34
High Reach Demolition Unique Electrical 35
Base Machine……………………………………………………………………………………………………………………. 35
High Reach Demolition Work Equipment ………………………………………………………………………………. 36
Medium Reach Demolition Work Equipment………………………………………………………………………….. 38
Demolition Digging Work Equipment…………………………………………………………………………………….. 40
RH PPC lever ……………………………………………………………………………………………………………………. 42
Working Range Indicator System……………………………………………………………………………………………. 43
1 – System Installation ………………………………………………………………………………………………………… 43
2 – System Components……………………………………………………………………………………………………… 45
20 Standard value table
Standard value table for machine High Reach Demolition unique ………………………………………………. 2
30 Testing and adjusting (part 1)
Testing and adjusting High Reach Demolition
Measuring and Adjusting Swing Speed Reduction Valves …………………………………………………………. 2
Measuring and Adjusting Boom and Bucket PPC Reduction Valves …………………………………………… 3
Measuring and Adjusting Link Cylinder Flow Control Valves ……………………………………………………… 4
Measuring and Adjusting Arm Cylinder Flow Control Valves ……………………………………………………… 5
30 Testing and adjusting (part 2)
Testing and adjusting High Reach Demolition
Working Range Indicator System Calibration…………………………………………………………………………….. 2
High Reach Demolition (H.R.D.) Calibration and Confirmation Procedure …………………………………….. 3
Medium Reach Demolition (M.R.D.) Straight Position Calibration Testing & Confirmation Procedure… 8
00 Table of Contents UENBM00370
PC490LC-10 HIGH REACH DEMOLITION 3
Medium Reach Demolition (M.R.D.) Cranked Position Calibration Testing & Confirmation Procedure 11
Working Range Indicator System Calibration procedure overview ……………………………………………… 14
High Reach Demolition (H.R.D.) Angle Sensor Calibration Procedure ………………………………………… 15
Medium Reach Demolition (M.R.D.) Straight Position Angle Sensor Calibration Procedure …………… 48
Medium Reach Demolition (M.R.D.) Cranked Position Angle Sensor Calibration Procedure………….. 65
50 Disassembly and assembly
Undercarriage and frame High Reach Demolition
Removal and installation of revolving frame assembly ……………………………………………………………… 2
90 Diagrams and drawings
High Reach Demolition Hydraulic diagrams and drawings
Hydraulic circuit diagram (1/3) ………………………………………………………………………………………………. 3
Hydraulic circuit diagram (2/3) ………………………………………………………………………………………………. 5
Hydraulic circuit diagram (3/3) ………………………………………………………………………………………………. 7
High Reach Demolition Electrical diagrams and drawings
Electrical circuit diagram (1/7)……………………………………………………………………………………………….. 3
Electrical circuit diagram (2/7)……………………………………………………………………………………………….. 5
Electrical circuit diagram (3/7)……………………………………………………………………………………………….. 7
Electrical circuit diagram (4/7)……………………………………………………………………………………………….. 9
Electrical circuit diagram (5/7)……………………………………………………………………………………………….11
Electrical circuit diagram (6/7)……………………………………………………………………………………………… 13
Electrical circuit diagram (7/7)……………………………………………………………………………………………… 15
