Part of the Hyundai Repair Manuals.
All 426 pages of this Hyundai HL750TM, Cummins B5.9-C Service Manual PDF focus on one machine: your HL750TM wheel loader and the Cummins diesel that powers it. You get factory wiring diagrams for the starting, charging, and monitoring circuits, plus hydraulic schematics tracing oil from the main pump through the control valve to the boom and bucket cylinders. Inside: full troubleshooting sections for the power train, brake, steering, and work equipment systems, backed by page after page of pressure tests, leakage checks, and assembly procedures. Torque the main pump housing bolts to 19.6 ± 2.9 kgf·m, then confirm the pump holds its 210 kgf/cm² maximum operating pressure. No more chasing wiring faults with a multimeter and a prayer. Bookmarked with a real text layer; type in a spec, jump to the section, and get back to work.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 9-31 | Safety Hints, Specifications (Major Component, Weight, Specification for Major Components, Tightening Torque of Major Component, Torque Chart, Recommended Lubricants) |
| Engine | 32-38 | Structure and Function, Structure, Cooling System (Thermostat), Fuel System |
| Power Train System | 39-155 | Structure and Function (Power Train Component Overview, Torque Converter, Transmission, Egs Lever, Axle, Final Drive, Tire and Wheel) |
| Brake System | 156-201 | Structure and Function (Outline, Brake Pump, Brake Valve, Cut-Off Valve, Parking Brake Cylinder, Brake Accumulator, Pressure Switches, Parking Brake) |
| Steering System | 202-266 | Structure and Function (Outline, Priority Valve, Steering Valve, Cushion Valve, Steering Cylinder), Operational Checks and Troubleshooting |
| Work Equipment | 267-348 | Structure and Function (Hydraulic System Outline, Main Pump Operation, Remote Control Valve, Main Control Valve, Pilot Oil Supply Unit, Safety Valve Unit, Boom and Bucket Cylinder, Hydraulic Oil Tank, Accumulator) |
| Electrical System | 349-426 | Component Location |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main pump housing mounting bolt torque | 19.6 ± 2.9 kgf·m | p. 25 |
| Main control valve mounting socket bolt torque | 7.2 ± 1.6 kgf·m | p. 25 |
| Main pump capacity | 44 + 41 cc/rev | p. 22 |
| Main pump maximum operating pressure | 210 kgf/cm² | p. 22 |
| Pressure regulating valve setting | 414kPa (60psi) | p. 36 |
| Oil pressure difference between engines | 69kPa (10psi) | p. 36 |
| Priority valve relief pressure | 20.5-21.5 MPa (205-215 bar, 3200-3300 psi) | p. 229 |
| Steering valve setting pressure adjustment | 1 turn = 70kgf/cm2 | p. 235 |
| System(M) relief pressure | 210 ± 5 kg/cm² (3000 ± 70 psi) | p. 320 |
| Engine oil quantity | 16.4 L | p. 22 |
| Transmission oil capacity | 25 L | p. 28 |
| Engine oil pan capacity | 16.4 L | p. 28 |
