Part of the Hyundai Repair Manuals.
Need factory specs for your Hyundai HSL810 skid steer loader? This 132-page Hyundai HSL810 service manual PDF walks you through the whole machine, from the hydrostatic drive pumps to the boom and bucket cylinders. You get complete wiring diagrams with connector destinations, a full hydraulic circuit diagram, and component testing procedures for main control valve pressure, charge pump pressure, and auxiliary pump flow. Step-by-step teardowns take you through the main pump, travel motor, self level valve, and main control valve spools, backed by a troubleshooting section that chases faults across travel hydraulics, power train, and the electrical system. Set the charge pressure relief valve at 290 psi (20 bar), and torque SAE size 8 flare fittings to 5.1 to 6.3 kgf·m. No more chasing electrical gremlins with a multimeter and a prayer. Bookmarked with a live text layer: pull it up on your phone in the shop and get wrenching.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-21 | Safety Hints, Machine Specifications (Bucket Capacity, Cycle Time, Engine Compression Ratio and Cooling Method), Axial Tandem Piston Pump Data, Maintenance Schedule |
| Hydraulic Circuit and Component Testing | 22-29 | Hydraulic Circuit Diagram, Component Testing Procedures, Main Control Valve Pressure, Auxiliary Pump Flow, Charge Pump Pressure, Hydrostatic Control Pump Pressure |
| Self Level Valve | 30-35 | Structure, Hydraulic Circuit, Self Leveling Operation, Bucket Cylinder Extension, Retracting Boom Cylinder |
| Auxiliary Pump | 36-41 | Function, Design, Pressure Balance, Removal and Install, Disassembly, Reassembly |
| Main Pump | 42-62 | Removal and Install, General Description, Transmission Hydraulic Support System, Start Up and Maintenance, Troubleshooting, Inspections and Adjustments |
| Travel Motor | 63-72 | Removal and Install, Disc Valve and Balance Plate, Channel Plate, Gear Wheel Set and Input Gear, Cardan Shaft and Bearing Housing, Reassembly with Dust Seals and Back-Up Rings |
| Main Control Valve | 73-79 | Removal and Install, Structure, Boom Spool Disassembly, Bucket Spool Disassembly, Auxiliary Spool Disassembly, Check Valve, Main Relief Valve |
| Boom and Bucket Cylinder | 80-84 | Removal and Install, Boom Cylinder, Bucket Cylinder, Structure, Disassembly and Assembly |
| Electrical System | 85-104 | Component Location, Wiring Diagram, Electrical Component Specification, Connector Destination |
| Power Train | 105-114 | Power Train Component, Front and Rear Axle, Gear Box |
| Control | 115-123 | Hand Control, Foot Control, Parking Brake, Attachment Holder |
| Troubleshooting | 124-132 | Travel Hydraulics, Boom and Bucket Hydraulic, Power Train, Control, Electrical System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Torque for SAE size 4 flare fitting | 1.1 - 1.6 kgf·m | p. 17 |
| Torque for SAE size 6 flare fitting | 2.6 - 3.1 kgf·m | p. 17 |
| Nut(2) tightening torque | 14.4 ± 2.2 kgf·m | p. 42 |
| Bolt(3) tightening torque | 6.9 ± 1.4 kgf·m | p. 42 |
| Charge pressure relief valve | 290 psi (20 bar) | p. 46 |
| Pump bolt tightening torque | 61~68 Nm | p. 41 |
| Charge pressure | 220 psi (15.2 bar) | p. 46 |
| M1 System pressure port A gauge | 6000 psi or 400 bar | p. 51 |
| Engine rated gross horse power | 70 ps at 2500 rpm | p. 13 |
| Engine oil quantity | 9.4 L | p. 15 |
| Main relief valve pressure | 170 kg/cm2 | p. 14 |
| Main control valve system pressure | 2400-2500 psi | p. 25 |



















