We Offers manuals high quality images, diagrams, instructions to help you to operate, maintenance, diagnostic, and repair your truck. This document is printable, without restrictions, contains searchable text, bookmarks, crosslinks for easy navigation.

This professional service manual contains service and maintenance procedures for the Kobelco SK045, SK045-2, SK050 Excavator (PY, PZ serial #s). In this service manual you will find detailed step-by-step instructions, illustrations, specifications and diagrams. View the Kobelco SK045, SK045-2, SK050 Excavator Service Manual on your computer or print off detailed information to service or repair your machine to the manufacturer’s standards. The Service Manual is also referred to as the Shop Manual or Repair Manual.

Topics in the Kobelco SK045, SK045-2, SK050 Excavator Service Manual PY, PZ:

1. GENERAL
1.1 General Precautions
1.2 Precautions concerning Disassembly and Reassembly
1.3 Precautions concerning Removing and Installing Hydraulic equipment
1.4 Precautions concerning Disconnecting and Connecting pipes
1.5 Handling of Seals
1.6 Tightening Torque
2. SPECIFICATIONS
2.1 Name of Components
2.2 General Dimensions
2.3 Working Ranges of Attachments
2.4 Lifting-up ability Diagram
Precautions to be exercised in the use of the Crane (for UK)
2.5 Specifications of Devices
2.6 Hydraulic of Equipment specifications
2.7 Weight Table
2.8 List of Oil and Greases
2.9 List of Filter Elements
3. MAINTENANCE STANDARDS
3.1 Lower System
3.2 Bucket
3.3 Attachment Pin and Bushing
4. PERFORMANCE CHECK JUDGMENT STANDARDS
4.1 Hydraulic Pressure Measurements
4.2 Travel Test Procedure
4.3 Slewing Test Procedure
4.4 Attachment Test Procedure
4.5 Another Test Procedure
4.6 Performance Inspection Standard

2. SYSTEMS
1. EXTERNAL VIEW
20 DRIVE SYSTEM
201 Construction ·
202 Procedure for Mounting and Dismantling
30 SLEWING SYSTEM
301 Construction
302 Dismantling and Mounting
4o TRAVELING SYSTEM
4o1 Construction
4o2 Removal and Installation Procedures
5o UPPER FRAME
5o1 Construction
502 Removal and Installation
6. CONTROL SYSTEM
6o1 Cable Control (Travel, Dozer, Swing, Service)
6.2 Engine Control
6.3 Relief-valve-integrated Triple Solenoid Valve
7. ATTACHMENT
7.1 Construction
702 Attachment
7.3 Removal and Installation Procedures
80 HYDRAULIC SYSTEM
801 General
802 Hydraulic circuit and component
803 Hydraulic circuit operation
9. ELECTRIC SYSTEM
901 Electric Circuit Diagram
9.2 Harness
100 HEATER

3. COMPONENTS
HYDRAULIC PUMP (MAIN)
GEAR PUMP (FOR SWING AND DOZER)
GEAR PUMP (FOR PILOT)
CONTROL VALVE MAIN
CONTROL VALVE SUB
PILOT VALVE
CYLINDER
TRAVEL MOTOR
SWING MOTOR
(SLEWING) REDUCTION UNIT
SWIVEL JOINT

4. TROUBLESHOOTING
1. GENERAL OPERATING
Nothing can be operated
All operations are possible, but power is lacking
Boom, bucket, swing structure, or arm does not move at all or moves too slowly
2. TRAVELLING
Right or left travel is impossible
Right or left travel speed drops, causing the machine to turn
2nd travel speed is impossible
Boom, arm ,or bucket cannot be operated during travel
3. SWINGING
Swing is completely impossible
Right. or left swing is impossible
Swing is slow or lacks power
Swing mode (Normal, slow) can not be changed
Swing is possible, but. oil Dow is large when swing is stopped or swing can not be stopped
Swing structure cannot be maintained in stop posture when the machine is stopped on an incline
4. BOOM OPERATING
Boom cylinder docs not move
Boom cylinder is sluggish or lacks power
When the boom control lever is pulled slowly, the boom lowers once before rising
Boom lowers on it’s own a great distance
5. ARM OPERATING
Arm cylinder docs not move
Arm cylinder is sluggish or lacks power
Arm lowers on it’s own a great distance
G. BUCKET OPERATING
Bucket cylinder docs not move or lacks power
Bucket lowers on it’s own a great distance
7. BOOM SWING OPERATING
Swing cylinder docs not move
8. DOZER OPERATING
Dozer cylinder does not move or lacks power
Dozer lowers on it’s own a great distance or cannot support the machine body

5. MITSUBISHI ENGINE K SERIES K4N-D31YSA, K4N-EID, KAN-D31YSB
0. GENERAL INFORMATION
1. ENGINE PROPER
2. LUBRICATING SYSTEM
3. FUEL SYSTEM
4. GOVERNOR SYSTEM
5. COOLING SYSTEM
6. INLET, EXHAUST SYSTEM
7. ELECTRICAL SYSTEM
8. MAINTENANCE
9. REFERENCE

Covers: Kobelco SK30SR-2, SK35SR-2 Hydraulic Excavator with serial numbers

• PY-02001 up
• PZ-00101 up

Pages: 532
Format: PDF
Compatibility: Windows/Mac/Tablet
File size: 29mb
Features: Printable
Note: Instant digital download only – no printed copy or CD-ROM media.