Part of the Hyundai Repair Manuals.
Need factory-level answers for your Hyundai R160LC-7 crawler excavator? This 500-page Hyundai R160LC-7 shop manual PDF covers the whole machine, pump device to undercarriage. You get full hydraulic circuit schematics with main and pilot circuit routing, electrical wiring diagrams with connector pinouts and component specs, plus a heavy troubleshooting section spanning hydraulic, electrical, and mechatronics faults, including the self-diagnostic system. Step-by-step disassembly and assembly procedures walk you through the pump, main control valve, swing device, travel device, turning joint, and boom, arm, and bucket cylinders. Fill the hydraulic system to 240 L (63.4 U.S. gal) total, then pull the track roller mounting bolts to 54.7 ± 6.0 kgf·m. Your excavator is down; forum guesses won't lift it. Bookmarked with a real text layer: search any spec, jump straight to the right section, and get back on the sticks.
What's Inside This Hyundai R160LC-7 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 11-36 | Safety Hints, Specifications |
| Structure and Function | 37-114 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 115-146 | Hydraulic Circuit, Main Circuit, Pilot Circuit |
| Electrical System | 147-192 | Component Location, Electrical Circuit, Electrical Component Specification |
| Mechatronics System | 193-230 | Outline, Mode Selection System |
| Maintenance Standard | 289-323 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 324-486 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 487-500 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine oil capacity | 16.5 L (4.4 U.S. gal) | p. 36 |
| Hydraulic tank capacity | 160 L (42.2 U.S. gal) | p. 36 |
| Hydraulic system capacity | 240 L (63.4 U.S. gal) | p. 36 |
| Track roller mounting bolt torque | 54.7 ± 6.0 kgf·m | p. 328 |
| Tightening torque for track roller bolts (Item 2, M12 x 1.75) | 12.8 ± 3.0 kgf·m | p. 495 |
| Operating weight | 17400 kg | p. 21 |
| Engine oil quantity | 16.5 L | p. 32 |
| Main pump maximum pressure | 330 kgf/cm2 | p. 32 |
| Swing motor relief pressure | 240 kgf/cm2 | p. 33 |
| Travel motor relief pressure | 330 kgf/cm2 | p. 33 |
Hyundai R160LC-7 Common Problems This Manual Covers
Hyundai R160LC-7 boom and arm sluggish under load, all hydraulic functions weak and slow
Test main pump pressure at the gauge port; relief should reach 330 kgf/cm2 at full stall. Check hydraulic tank level first, the tank holds 160 L and low oil aerates the pump. If pressure checks good, trace the pilot circuit on the schematic, then work the flow charts starting.
Manual Section: Attachment System Troubleshooting p. 235Upper structure drifts on slopes and swing will not hold position when stopped
Verify swing motor relief pressure against the 240 kgf/cm2 spec on page 33. Low relief lets load torque overpower the parking brake. Inspect the make-up check valves in the swing motor head, then test the relief valve itself. Follow the swing drift procedure in the troubleshooting flow beginning.
Manual Section: Swing System Troubleshooting p. 235Machine pulls to one side during travel, one track noticeably slower than the other
Swap the travel hoses at the turning joint to isolate motor from control valve. Test travel relief pressure on both circuits; spec is 330 kgf/cm2, and any real split between sides will curve travel. Clean the counterbalance valve spools and check the turning joint seals using the service procedures on page 331.
Manual Section: Travel System Troubleshooting p. 235Track rollers leaking oil and mounting bolts backing out on the undercarriage
Replace leaking rollers as complete assemblies; seal kits rarely hold on worn duo-cone faces. Torque track roller mounting bolts to 54.7 ± 6.0 kgf·m per the chart on page 328, on clean dry threads. Recheck torque after the first shift and inspect adjacent roller shells for flat spots and scoring.
Manual Section: Disassembly and Assembly p. 328Coolant temperature gauge climbs into the red during heavy digging in warm weather
Check coolant level cold; the radiator and reservoir system holds 30 L. Clean the radiator and oil cooler cores with compressed air from the fan side. Test the temperature sender against the gauge using the wiring diagram on page 150, since a lazy sender mimics real overheat. Verify fan belt tension before condemning the thermostat.
Manual Section: Electrical System Troubleshooting p. 255Frequently Asked Questions
How do I reset the error codes on a Hyundai R160LC-7?
To delete all recorded error codes, select the recorded error (TIME Er) display on the cluster. Press the engine switch and the select switch at the same time for 2 seconds or more. The cluster display will change to 'TIME Er : 00', indicating that the CPU controller has deleted all recorded error codes from the memory. p. 205
What are the torque specifications for the track roller mounting bolts on a Hyundai R160LC-7?
The torque specification for the track roller mounting bolts (M20 x 2.5) is 54.7 ± 6.0 kgf·m (396 ± 43.4 lbf·ft). p. 328
What is the standard engine oil quantity for the Mitsubishi S6S-DT engine?
The standard engine oil quantity for the Mitsubishi S6S-DT engine is 16.5 liters (4.4 U.S. gal). p. 32
How do I bleed the air from the hydraulic pump after installation?
To bleed the air from the hydraulic pump, remove the two air vent plugs (2EA), tighten them lightly, start the engine and run at low idling until oil comes out from the plugs, then tighten the plugs fully. p. 332
What is the standard tightening torque for the main relief valve on the main control valve?
The standard tightening torque for the main relief valve on the main control valve is 8 to 9 kgf·m (57.8 to 65.1 lbf·ft) using a 32mm spanner. p. 365
Is this Hyundai R160LC-7 Shop Manual a digital download?
A 500-page Shop Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
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