Part of the Hyundai Repair Manuals.
This 397-page Hyundai HL740-9, HL740XTD-9, HL740TM-9 Service Manual PDF is aimed at one job: keeping your HL740 series wheel loader digging. You get factory wiring diagrams with connector pinouts, full hydraulic schematics, error code listings, and troubleshooting charts that walk from symptom to fix across the power train, brake, steering, and work equipment systems. Inside: complete disassembly and assembly procedures plus test and adjustment steps for every major system on the loader. Torque the rubber engine mounting nuts to 29.7 kgf·m (215 lbf·ft) and confirm the twin 12V, 80Ah batteries are feeding the 24V starting motor before you chase electrical gremlins. No more hunting wiring faults with a multimeter and a prayer. Bookmarked by system and searchable by keyword; jump straight to the spec and get back on the pile.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-38 | Safety Hints, Specifications, Operational Checkout Record Sheet |
| Engine | 39-47 | Structure and Function, Fuel Warmer System, Engine Speed and Stall RPM |
| Power Train System | 48-121 | Structure and Function, Operational Checks and Troubleshooting, Test and Adjustments, Disassembly and Assembly |
| Brake System | 122-161 | Structure and Function, Operational Checks and Troubleshooting, Tests and Adjustments, Disassembly and Assembly |
| Steering System | 162-221 | Structure and Function, Operational Checks and Troubleshooting, Tests and Adjustments, Disassembly and Assembly |
| Work Equipment | 222-310 | Structure and Function, Operational Checks and Troubleshooting, Tests and Adjustments, Disassembly and Assembly |
| Electrical System | 311-397 | Component Location, Electrical Circuit, Monitoring System, Electrical Component Specification, Connectors, Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Engine mounting bolt, nut (rubber, 2EA) | 29.7 ± 4.5 kgf·m (215 ± 32.5 lbf·ft) | p. 32 |
| Engine mounting bolt (bracket, 8EA) | 10.7 ± 1.6 kgf·m (77.4 ± 11.6 lbf·ft) | p. 32 |
| Battery | 2 × 12V × 80Ah | p. 29 |
| Starting motor | 24 V-3.7 kW | p. 29 |
| Bypass valve set pressure | 1.36 kg/cm2 (19.3 psi) | p. 261 |
| Hydraulic oil filter replacement interval | 250 operating hours | p. 288 |
| Voltage | 20~25V | p. 320 |
| Starter | Nippondenso 24V-3.7kW | p. 366 |
| Back up buzzer | 24V 0.5A 110dB | p. 365 |
| HL740-9 | ||
| Operating Weight, HL740-9 | 12000 kg | p. 23 |
| HL740XTD-9 | ||
| Operating Weight, HL740XTD-9 | 12300 kg | p. 24 |
| HL740TM-9 | ||
| Operating Weight, HL740TM-9 | 12600 kg | p. 25 |
