Hyundai Mini Excavator R28-7 Service Manual PDF

This PDF Service Manual contains detailed maintenance information, detailed repair and service instructions, technical specifications, circuits, diagrams, maintenance and troubleshooting information for the Hyundai Mini Excavator R28-7 Model.

Improper use and maintenance of the mini excavator can result in serious injury. That is why this service manual will become your indispensable assistant in the routine maintenance and repair of the Hyundai Mini Excavator R28-7 Model.

This manual is written in such a way that you can understand the machine and understand its safe operation. It also contains maintenance data and technical data.

In order to work with this pdf instruction, we recommend you to use the application - Adobe Acrobat Reader (or other analogs). So, you don't need to spend your time installing this file (Instant Download). It is easy to purchase this product. Just click on the 'Buy Now' button and follow the instructions. After payment, you will get the link for downloading your PDF Service Manual. So, after a few minutes, you will get your guide and you can start studying it. 

Models covered:
Robex 28-7

SER. NO. HY2870001~

CONTENTS:

• 1. Precautions on Maintenance
• 2. Outline
  • 2-1 Location of serial No.
  • 2-2 Name of each part
  • 2-3 Dimensions and specification
  • 2-4 Weight list
  • 2-5 Oil and grease supply points
  • 2-6 List of supply oil and grease
  • 2-7 When to repair
  • 2-8 Hydraulic circuit diagram
• 3. Attachment
  • 3-1 Standard of maintenance
  • 3-2 Inspection and adjustment
• 4. Engine
  • 4-1 Specification
  • 4-2 Performance curve
  • 4-3 Location of the serial number
  • 4-4 Inspection and maintenance procedures for engine parts
• 5. Main Pump
  • 5-1 Specification
  • 5-2 Structure
  • 5-3 Removing and installing the pump
  • 5-4 Performance test of the hydraulic pump
• 6. Hydraulic Oil Filter
  • 6-1 Installation
  • 6-2 Hydraulic oil filter
  • 6-3 Maintenance procedure
• 7. Control Valve
  • 7-1 Specification
  • 7-2 Disassembly and assembly
  • 7-3 Structure of the relief valve
  • 7-4 Precautions for handling
• 8. Joystick (Pilot Valve)
  • 8-1 Specification
  • 8-2 Structure
• 9. Pilot Valve (1) (Travel)
  • 9-1 Specification
  • 9-2 Structure
• 10. Pilot valve (2) (Swing, PTO)
  • 10-1 Specification
  • 10-2 Structure
• 11. Pilot Valve (3) (Dozer)
  • 11-1 Specification
  • 11-2 Structure
• 12. Slew Motor
  • 12-1 Specification
  • 12-2 Structure
  • 12-3 Standard of maintenance
  • 12-4 Inspection and adjustment
• 13. Travel Motor
  • 13-1 Specification
  • 13-2 Structure
  • 13-3 Handling the travel motor
  • 13-4 Measuring travel motor idling and traveling time
  • 13-5 Inspection and adjustment
• 14. Hydraulic Cylinder
  • 14-1 Structure
  • 14-2 Disassembly and assembly
  • 14-3 Assembly
• 15. Swivel Joint
  • 15-1 Specification and Structure
  • 15-2 Structure, disassembly, and assembly
• 16. Crawler
  • 16-1 Structure and operation
  • 16-2 Standard of maintenance
  • 16-3 Disassembly and assembly
• 17. Spring Case and Grease Cylinder
  • 17-1 Structure
  • 17-2 Specification of spring
  • 17-3 Disassembly and assembly
• 18. Idler
  • 18-1 Standard of maintenance
• 19. Sprocket
  • 19-1 Disassembly and assembly
  • 19-2 Standard of maintenance
• 20. Track Roller
  • 20-1 Standard of maintenance
• 21. Carrier Roller
  • 21-1 Standard of maintenance
• 22. Electrical Equipment
  • 22-1 Structure and function
  • 22-2 Failure and remedy
• 23. Troubleshooting
  • 23-1 Troubleshooting