Part of the Hyundai Repair Manuals.
All 396 pages of this Hyundai HL730-7, HL730TM-7 Service Manual PDF cover one machine: the HL730 wheel loader, from power train to work equipment. You get full electrical circuit diagrams with connector pinouts and component specifications, hydraulic circuits for the brake, steering, and work equipment systems, plus page after page of disassembly and assembly procedures. A dedicated troubleshooting section walks you through operational checks on the transmission, brakes, and steering unit before you pull anything apart. The main pump tops out at 210 kgf/cm2 (2990 psi); torque the pump housing mounting bolts to 19.6 kgf-m, plus or minus 2.9, and you're within factory limits. No more chasing wiring faults with a multimeter and a prayer. Bookmarked by system and text-searchable: type the spec you need, find the page, and go fix the loader.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-38 | Safety Hints, Specifications, Operational Checkout Record Sheet |
| Engine | 39-47 | Structure, System Diagrams |
| Power Train System | 48-122 | Structure and Function, Operational Checks and Troubleshooting, Test and Adjustments, Disassembly and Assembly |
| Brake System | 123-161 | Structure and Function, Hydraulic Circuit, Brake Pump, Brake Valve |
| Steering System | 162-231 | Outline, Hydraulic Circuit, Steering Unit, Steering Cylinder, Troubleshooting |
| Work Equipment | 232-320 | Hydraulic System Outline, Hydraulic Circuit, Main Pump Operation, Remote Control Valve, Main Control Valve |
| Electrical System | 321-396 | Component Location, Electrical Circuit, Monitoring System, Electrical Component Specification, Connectors, Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Steering unit mounting bolt torque | 6.9 ± 1.4 kgf·m | p. 32 |
| Main pump housing mounting bolt torque | 19.6 ± 2.9 kgf·m | p. 32 |
| Main pump capacity | 36+28.5cc/rev | p. 30 |
| Main pump maximum operating pressure | 210kgf/cm² (2990psi) | p. 30 |
| Converter relief valve opening pressure | 9 bar | p. 63 |
| Converter back pressure valve opening pressure | 3.5 bar | p. 63 |
| Steering unit relief valve pressure | 21MPa | p. 164 |
| Relief pressure | 20.5~21.5Mpa (205~215bar, 3200~3300psi) | p. 187 |
| Tighten torque for LS plug | 5.1 ± 1 kgf·m (36.9 ± 7.2 lbf·ft) | p. 193 |
| Tighten torque for PP plug | 5.1 ± 1 kgf·m (36.9 ± 7.2 lbf·ft) | p. 193 |
| Nut (Pipe assy) torque | 30 ± 3 kgf·m (217 ± 21.7 lbf·ft) | p. 219 |
| Engine Oil Quantity | 11 L | p. 32 |
