Part of the Hyundai Repair Manuals.
Looking for the Hyundai R160LC-7A, R160LCD-7A shop manual PDF? All 499 pages of this factory shop manual cover both crawler excavator variants, from pump device teardown to final track tension. Inside: full hydraulic circuit schematics tracing pilot and main circuits through single and combined operation, wiring diagrams with connector pinouts and component locations, and a troubleshooting section spanning hydraulic, electrical, and mechatronics faults, self-diagnostic codes included. You also get complete disassembly and assembly procedures for the main control valve, swing device, travel motors, and cylinders, backed by mounting torque tables for every system. Set the pilot relief valve at 35 kgf/cm2 and watch for the 1.5 kgf/cm2 bypass differential before you condemn a pump. No more chasing pressures with borrowed numbers. Bookmarked PDF, opens on any device; search a spec by keyword and get wrenching.
What's Inside This Hyundai R160LC-7A, R160LCD-7A Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 11-39 | Safety Hints, Specifications |
| Structure and Function | 40-117 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 118-149 | Hydraulic Circuit, Main Circuit, Pilot Circuit, Single Operation, Combined Operation |
| Electrical System | 150-201 | Component Location, Electrical Circuit, Electrical Component Specification, Connectors |
| Mechatronics System | 202-235 | Outline, Mode Selection System, Engine Control System, Monitoring System |
| Maintenance Standard | 286-322 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 323-485 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 486-499 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Bypass relief valve opening differential pressure | 1.5kgf/cm2 | p. 121 |
| Pilot relief valve setting pressure | 35kgf/cm2 | p. 123 |
| Drain oil pressure limit for spin filter | 1.5kgf/cm2 | p. 122 |
| Fuse 1 | 30A | p. 151 |
| Fuse 2 | 10A | p. 151 |
| Battery capacity | 12V 80Ah | p. 171 |
| Fuse box capacity | 30A | p. 169 |
| EPPR valve resistance | 15~25 Ohm | p. 173 |
| Solenoid valve resistance | 15~25 Ohm | p. 173 |
| Aircon compressor | 24V 79W | p. 177 |
| Start relay | 24V 300A | p. 177 |
| EPPR valve pressure | 5~20kgf/cm2 (70~280psi) | p. 277 |
Hyundai R160LC-7A, R160LCD-7A Common Problems This Manual Covers
Hyundai R160LC-7A hydraulics go weak or intermittent, then boom, bucket, and travel stop responding
Check pilot pressure first; the pilot relief valve setting is 35 kgf/cm2, shown on page 123. Test the EPPR valve next: output pressure should fall between 5 and 20 kgf/cm2 (70 to 280 psi), covered on page 277. Measure coil resistance and replace the valve if it falls outside 15 to 25 Ohm.
Manual Section: Mechatronics System Troubleshooting p. 277Engine cranks slowly or refuses to start; monitor cluster flickers or stays dark
Test both batteries under load; each should meet the 12V 80Ah spec on page 171. Check the 60A fusible link listed on page 178 before condemning the starter, then work through the fuse panel, starting with the 30A No.1 fuse on the chart on page 151. Clean and tighten every battery terminal and ground strap while you are in there.
Manual Section: Electrical System Troubleshooting p. 171Coolant temperature climbs under load and the overheat warning lamp blinks with the buzzer
Check coolant level cold and fill the system to its full 28L capacity, spec on page 39. Inspect the radiator core for mud packing and blow it clean from the fan side. Check fan belt tension and blade condition. If you pull the radiator, torque the mounting bolts and nuts to 12.2 kgf·m per page 328 on reassembly.
Manual Section: Electrical System Troubleshooting p. 39Hydraulic oil overheats after an hour of digging; boom and arm slow to a crawl
Drain a sample and inspect the oil for milkiness or a burnt smell, then pull the return filter; a plugged element dumps oil past the bypass relief valve once differential pressure exceeds 1.5 kgf/cm2, spec on page 121. Clean the oil cooler fins, verify fan belt tension, and follow the overheating chart starting.
Manual Section: Hydraulic and Mechanical System TroubleshootingBoom, arm, and bucket dig power weak; machine stalls against the bank
Connect a gauge to the pump test port and stall each circuit at relief; main relief pressure should reach 330 kgf/cm2 per the spec table on page 37. If pressure checks good, run the cylinder cycle time and drift tests in the Maintenance Standard section starting on page 286. Low readings across every circuit point to pump wear, not the relief valve.
Manual Section: Operational Performance Test p. 37Frequently Asked Questions
How do I clear error codes on the Hyundai R160LC-7A?
To delete error codes, navigate to the 'Diagnosis' menu on the cluster. Select 'Recorded Error' and then choose 'Yes' when prompted to delete all errors. This will clear the stored fault codes from the memory. p. 214
What are the torque specifications for the hydraulic cylinder bolts on the R160LC-7A?
The tightening torque for the bucket cylinder piston lock nut is 100 ± 10 kgf·m (723 ± 72.3 lbf·ft). For the boom and arm cylinder piston lock nuts, the torque is also 100 ± 10 kgf·m (723 ± 72.3 lbf·ft). p. 468
How do I reset the monitor alarm on a Hyundai R160LC-7A?
If an abnormal condition occurs, the lamp lights up and the buzzer sounds. You can cancel the buzzer sound by pressing the BUZZER STOP switch, but the lamp will remain lit until the condition returns to normal. p. 225
What is the standard torque for the main relief valve on the R160LC-7A?
The standard tightening torque for the main relief valve is 8-9 kgf·m (57.8-65.1 lbf·ft). p. 364
What is the hydraulic tank capacity for the R160LC-7A?
The hydraulic tank capacity is 160 liters (42.2 U.S. gal). p. 330
What exactly do I receive with this Hyundai R160LC-7A Shop Manual?
One searchable PDF covering 499 pages, delivered instantly. No disc, no shipping, no waiting on the post.
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Print away. There is no DRM and no page limit. Many buyers print one chapter at a time and leave the rest on a tablet.
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