Part of the Hyundai Repair Manuals.
Looking for the Hyundai Robex 15-7 service manual PDF your dealer won't hand over? This factory manual runs 119 pages and covers the Robex 15-7 hydraulic excavator from the main pump to the crawler assembly. Hydraulic circuit diagrams, an electrical wiring section with failure-and-remedy charts, exploded views of the control valve, slew motor, and travelling motor, and a troubleshooting section that walks the travelling, slewing, boom, and swing systems. Standard-of-maintenance tables cover the attachment, idler, sprocket, and track rollers. Set the main relief valve to 18.6 MPa (190 kgf/cm2) and tighten 1/4 PF hose fittings to 27 to 30 N-m. No more chasing hydraulic faults with a gauge and a hunch. Bookmarked with a full text layer, so you can search any spec and jump straight to the Control Valve or Troubleshooting section.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Precautions on Maintenance | 6 | Correct Operation, Safety Check, Preparation, Disassembly, Repair, Assembly |
| Outline | 7-24 | Location of Serial No., Name of Each Part, Dimensions and Specification, Weight List, Oil and Grease Supply Points, List of Supply Oil and Grease, When to Repair |
| Attachment | 25-32 | Standard of Maintenance, Inspection and Adjustment |
| Engine | 33-36 | Specification, Performance Curve |
| Main Pump | 37-42 | Specification, Structure, Removing and Installing the Pump, Performance Test |
| Hydraulic Oil Filter | 43-48 | Installation, Maintenance Procedure |
| Control Valve | 49-56 | Specification, Disassembly and Assembly, Structure of the Relief Valve, Precautions for Handling |
| Joystick | 57-60 | Specification, Structure |
| Slew Motor | 61-66 | Specification, Structure, Slew Bearing and Slew Case, Measuring Natural Slew Distance, Measuring Over-Slew Distance, Measuring Slewing Time |
| Travelling Motor | 67-72 | Specification, Structure, Operation, Handling the Travelling Motor, Measuring Idling and Travelling Time, Inspection and Adjustment |
| Hydraulic Cylinder | 73-78 | Structure, Disassembly and Assembly, Assembly |
| Swivel Joint | 79-82 | Specification and Structure, Structure, Disassembly and Assembly |
| Crawler | 83-90 | Structure and Operation, Standard of Maintenance, Disassembly and Assembly |
| Spring Case and Grease Cylinder | 91-94 | Structure, Disassembly and Assembly |
| Idler | 95-96 | Standard of Maintenance |
| Sprocket | 97-100 | Disassembly and Assembly, Standard of Maintenance |
| Track Roller | 101-102 | Standard of Maintenance |
| Electrical Equipment | 103-106 | Structure and Function, Failure and Remedy |
| Troubleshooting | 107-119 | Travelling System, Slewing System, Boom System, Swing System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Tightening torque for M6 bolts (8.8 grade) | 12.5 N-m | p. 19 |
| Tightening torque for M8 bolts (8.8 grade) | 30 N-m | p. 19 |
| Tightening torque for PF screw hose fitting (1/4 size) | 27~30 N-m | p. 19 |
| Tightening torque for PF screw hose fitting (3/8 size) | 47~52 N-m | p. 19 |
| Main relief pressure | 18.6MPa (190kgf/cm2) | p. 50 |
| Main relief valve tightening torque (Cap nut) | 29.4N-m (3.0kg-m) | p. 55 |
| Port relief pressure | 20.6MPa (210kgf/cm2) | p. 50 |
| Port relief valve tightening torque (Cap nut) | 29.4N-m (3.0kgf/m) | p. 55 |
| Line filter tightening torque | 19.6Nm (2kgf/m) | p. 45 |
| Line filter filtration accuracy | 10µ | p. 45 |
| Total amount of hydraulic oil | 24 l | p. 47 |
| Tightening torque of the cartridge valve | 183 to 206 N-m | p. 93 |
