Kobelco SK17SR-5E Mini Excavator S5PU0021E03 (Preview)
CONTENTS
CHAPTER 1
GENERAL CAUTIONS FOR MAINTENANCE WORK
1-1 Correct Work … 1-1
1-2 Safety Precautions … 1-1
1-3 Preparations … 1-1
1-4 Cautions for Disassembly and Reassembly … 1-1
1-5 Cautions for Removal and Installation of Hydraulic Equipment … 1-2
1-6 Cautions for Removal and Installation of Hydraulic Piping … 1-2
1-7 Cautions for Handling Seals … 1-3
1-8 Correct Installation of Hydraulic Hose … 1-3
1-9 Specifications of Hydraulic Hose … 1-6
1-10 Air Release of Hydraulic Equipment … 1-11
CHAPTER 2
TECHNICAL DATA
2-1 Specifications … 2-1-1
2-2 Outline Drawing and Working Area … 2-2-1
2-3 Weight List of Main Parts … 2-3-1
2-4 Lifting Capacity List … 2-4-1
CHAPTER 3
SERVICE STANDARDS
3-1 Machine Performance … 3-1-1
3-2 Engine … 3-2-1
3-3 Undercarriage … 3-3-1
3-3-1 Rubber Crawler Specifications … 3-3-1
3-4 Controls … 3-4-1
3-5 Hydraulic Equipment … 3-5-1
3-5-1 Hydraulic Cylinders … 3-5-1
3-6 Implement … 3-6-1
3-6-1 Front Attachments … 3-6-1
3-6-2 Blade Moving Device … 3-6-2
3-6-3 Bucket Teeth … 3-6-2
3-7 List of Tightening Torque … 3-7-1
3-7-1 Machine … 3-7-1
3-7-2 Engine … 3-7-4
3-7-3 Tightening Torque for General Bolts and Nuts … 3-7-4
3-7-4 Hydraulic Hose Joint … 3-7-5
CHAPTER 4
ENGINE
4-1 Exploded View … 4-1-1
4-2 Measurement, Inspection and Adjustment … 4-2-1
4-2-1 Measuring the Compression Pressure … 4-2-1
4-2-2 Adjusting the Valve Clearance … 4-2-2
4-2-3 Checking the V-belt Tension … 4-2-3
4-2-4 Checking the Fuel Injection Valve … 4-2-3
4-2-5 Checking and adjusting the Fuel Injection Timing … 4-2-5
4-2-6 Adjusting the Maximum (or Minimum) Idling Speed … 4-2-7
4-2-7 Checking the Cooling Water System and Radiator for Water Leakage … 4-2-7
4-2-8 Checking the Sensors … 4-2-8
4-3 Measurement Procedure, Service Data and Corrective Action … 4-3-1
4-3-1 Cylinder Head … 4-3-1
4-3-2 Cylinder Block … 4-3-6
4-3-3 Valve Rocker Arm … 4-3-8
4-3-4 Piston and Piston Rings … 4-3-10
4-3-5 Connecting Rod … 4-3-13
4-3-6 Cam shaft … 4-3-16
4-3-7 Crank shaft … 4-3-17
4-3-8 Gears … 4-3-20
4-3-9 Trochoid Pump … 4-3-21
4-4 Precautions for Reassembly … 4-4-1
4-5 Electrical Equipment … 4-5-1
4-5-1 Starter Motor … 4-5-1
4-5-2 Alternator … 4-5-2
CHAPTER 5
HYDRAULIC SYSTEM
5-1 Outline … 5-1-1
5-1-1 Control Valve Operation … 5-1-4
5-1-2 Additional Operation of Control Valve … 5-1-6
5-2 Hydraulic Circuit Schematic … 5-2-1
5-2-1 For Standard Type Machines … 5-2-1
5-3 Circuit Operation … 5-3-1
5-3-1 Boom … 5-3-1
5-3-2 Arm … 5-3-3
5-3-3 Bucket … 5-3-5
5-3-4 Swing … 5-3-7
5-3-5 Boom Swing … 5-3-9
5-3-6 Blade … 5-3-11
5-3-7 Travel … 5-3-13
5-3-8 Track Gauge Change … 5-3-15
5-3-9 Travel Straight (Simultaneous Operation of Boom, Arm, Bucket, and Boom Swing) … 5-3-17
5-3-10 Simultaneous Operation of Boom and Bucket … 5-3-19
5-3-11 Hydraulic P.T.O. … 5-3-21
5-4 Pressure Adjustment … 5-4-1
5-4-1 Relief Valves … 5-4-1
5-4-2 Swing Brake Valve … 5-4-3
5-4-3 Cut-Off Valve … 5-4-4
CHAPTER 6
HYDRAULIC EQUIPMENT
6-1 Hydraulic Pump … 6-1-1
6-2 Control Valve … 6-2-1
6-3 Pilot Valve … 6-3-1
6-4 Swing Motor … 6-4-1
6-5 Travel Motor … 6-5-1
CHAPTER 7
ADJUSTMENT AND REPAIR
7-1 Electric Equipment of Machine … 7-1-1
7-1-1 Parts Layout of Electrical Equipment … 7-1-1
7-1-2 Monitor and Alarm Systems … 7-1-2
7-1-3 Wiring Diagram … 7-1-5
7-1-4 Circuit Description of Engine Start and Stop, and Battery Charging … 7-1-6
7-1-5 Removal and Reinstallation of Engine … 7-1-9
7-1-6 Removal and Reinstallation of Starter Motor … 7-1-15
7-1-7 Removal and Reinstallation of Fuel Injection Pump … 7-1-16
7-1-8 Removal and Reinstallation of Fuel Tank … 7-1-18
7-1-9 Removal and Reinstallation of Radiator … 7-1-21
7-2 Undercarriage … 7-2-1
7-2-1 Outline … 7-2-1
7-2-2 Points of Reassembly … 7-2-2
7-2-3 Crawler Tension Adjustment Procedure … 7-2-3
7-2-4 Removal and Reinstallation of Crawler … 7-2-4
7-2-5 Disassembly and Reassembly of Idler … 7-2-5
7-2-6 Disassembly and Reassembly of Track Roller … 7-2-7
7-2-7 Removal and Reinstallation of Track Gauge Change Cylinder … 7-2-9
7-3 Controls … 7-3-1
7-3-1 Control Train … 7-3-1
7-3-2 Mechanical Control Linkage … 7-3-2
7-3-3 Adjustment of Control Levers … 7-3-4
7-3-4 Adjustment of Travel Levers … 7-3-5
7-3-5 Adjustment of Boom Swing Pedal … 7-3-6
7-3-6 Adjustment of Blade Lever … 7-3-6
7-3-7 Adjustment of Lock Lever Switch … 7-3-7
7-3-8 Adjustment of Accelerator Lever … 7-3-8
7-3-9 Adjustment of P.T.O. Pedal … 7-3-9
7-3-10 Adjustment Procedure of Travel Alarm Switch (Left and Right) … 7-3-10
7-4 Swing Bearing … 7-4-1
7-5 Hydraulic Equipment … 7-5-1
7-5-1 Removal and Reinstallation of Hydraulic Pump … 7-5-1
7-5-2 Removal and Reinstallation of Control Valve … 7-5-4
7-5-3 Removal and Reinstallation of Swing Motor … 7-5-7
7-5-4 Removal and Reinstallation of Swivel Joint … 7-5-10
7-5-5 Disassembly and Reassembly of Swivel Joint … 7-5-13
7-5-6 Disassembly and Reassembly of Hydraulic Cylinders … 7-5-16
7-5-7 Hydraulic Oil Tank … 7-5-20
7-5-8 Piping Layout … 7-5-26
7-6 Implement … 7-6-1
7-6-1 Removal and Reinstallation of Implement … 7-6-1
CHAPTER 8
PERIODIC INSPECTION AND SERVICING
8-1 List of Periodic Inspection and Servicing … 8-1
CHAPTER 9
FUEL, LUBE OIL AND GREASE RECOMMENDED
9-1 List of Fuel, Lube Oil and Grease Recommended … 9-1
CHAPTER 10
TROUBLESHOOTING
10-1 Non-Breakdowns … 10-1-1
10-1-1 Natural Release of Bucket … 10-1-1
10-1-2 Discontinuous Arm Movement … 10-1-1
10-1-3 Drifting of Upprestructure on Quick Travel Operation … 10-1-2
10-1-4 Thermal Shock of Travel Motor … 10-1-3
10-1-5 Time Lag on Travel Speed Switching … 10-1-4
10-1-6 Fluctuation in Oil Level of Hydraulic Oil Tank Due to Temperature Change … 10-1-5
10-2 Troubleshooting … 10-2-1
10-2-1 Machine and Engine … 10-2-1
10-2-2 Electrical Equipment on Panel … 10-2-22
CHAPTER 11
REFERENCE DATA
11-1 Specifications for Attachment … 11-1
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