Part of the Hyundai Repair Manuals.
This 500-page Hyundai HL740-3, HL740TM-3 Service Manual PDF covers the full wheel loader lineup: torque converter, transmission, axles, brakes, steering, and complete work equipment hydraulics. Inside you get electrical circuit diagrams with connector pinouts, hydraulic schematics for the main pump and control valve, plus troubleshooting sections for every system from power train to the monitoring panel. Step-by-step disassembly and assembly procedures walk you through each rebuild the way Hyundai's engineers wrote them. Set the main control valve overload relief to 240 kgf/cm2 (3414 psi) and confirm torque converter stall speed lands between 2130 and 2270 rpm. No more chasing wiring faults with a multimeter and a prayer. Bookmarked by section and text-searchable; pull it up on your phone at the machine and find the spec in seconds.
Other edition of this manual
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-38 | Safety Hints, Specifications, Operational Checkout Record Sheet |
| Engine | 39-46 | Structure and Function |
| Power Train System | 47-224 | Power Train Component Overview, Torque Converter, Transmission, Axle |
| Brake System | 225-264 | Structure and Function, Operational Checks and Troubleshooting, Tests and Adjustments, Disassembly and Assembly |
| Steering System | 265-335 | Structure and Function, Operational Checks and Troubleshooting, Tests and Adjustments, Disassembly and Assembly |
| Work Equipment | 336-427 | Hydraulic System Outline, Main Pump Operation, Remote Control Valve, Main Control Valve, Boom and Bucket Cylinder |
| Electrical System | 428-500 | Component Location, Electrical Circuit, Monitoring System, Electrical Component Specification, Connectors, Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main control valve overload relief valve pressure | 240kgf/cm2(3414psi) | p. 30 |
| Engine mounting bolt, nut(4EA) torque | 57.9 ± 8.7 kgf·m | p. 32 |
| Radiator mounting bolt, nut torque | 12.3 ± 2.5 kgf·m | p. 32 |
| Torque converter stall rpm | 2130 ~ 2270 rpm | p. 110 |
| Transmission oil type | SAE 10W-30 / 15W-40 | p. 113 |
| Forward clutch pressure | 16+2 bar | p. 112 |
| Reverse clutch pressure | 16+2 bar | p. 112 |
| Shock valves | 270-290 bar | p. 277 |
| Gland tightening torque | 70 ± 7 kgf·m (506 ± 51 lbf·ft) | p. 323 |
| Nylon nut tightening torque | 75 ± 8 kgf·m (542 ± 58 lbf·ft) | p. 323 |
| Engine Oil Quantity | 16.4 L | p. 29 |
| Main Pump Maximum Operating Pressure | 220 kgf/cm2 | p. 29 |
