Part of the Hyundai Repair Manuals.
All 576 pages of this Hyundai R210NLC-7, 210NLC-7 shop manual PDF focus on one job: putting your crawler excavator back to work on factory specs. You get complete hydraulic schematics for the main and pilot circuits, wiring diagrams with connector pinouts and component locations, and a full troubleshooting section covering hydraulic, electrical, and mechatronics faults right down to the self-diagnostic codes. Step-by-step disassembly and assembly procedures walk you through the pump device, main control valve, swing device, travel motors, and turning joint, with tightening torques for every mounting bolt on the machine. Set the track roller mounting bolts to 54.7 ± 5.0 kgf·m (396 ± 36.2 lbf·ft) and check that the bypass relief valve opens at 1.5 kgf/cm2 (21 psi). No more chasing a swing fault with forum guesses. Bookmarked and keyword-searchable; open it on any device and jump straight to the spec you need.
What's Inside This Hyundai R210NLC-7, 210NLC-7 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-31 | Safety Hints, Specifications |
| Structure and Function | 32-129 | Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 130-161 | Hydraulic Circuit, Main Circuit, Pilot Circuit, Single Operation, Combined Operation |
| Electrical System | 162-209 | Component Location, Electrical Circuit, Electrical Component Specification, Connectors |
| Mechatronics System | 210-247 | Outline, Mode Selection System, Automatic Deceleration System |
| Maintenance Standard | 304-340 | Operational Performance Test, Major Components, Track and Work Equipment |
| Disassembly and Assembly | 341-553 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 554-576 | Introduction Guide, Engine System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Bypass relief valve opening pressure | 1.5kgf/cm2 (21psi) | p. 133 |
| Relief valve setting pressure | 35kgf/cm2 | p. 133 |
| Track roller mounting bolt | 54.7 ± 5.0 kgf·m | p. 346 |
| Tightening torque for engine hood bolts | 12.8±3.0 kgf·m (92.6±21.7 lbf·ft) | p. 566 |
| Engine oil quantity | 24 L | p. 27 |
| Main pump capacity | 2 x 113 cc/rev | p. 27 |
| Main relief valve pressure | 330 kgf/cm2 | p. 28 |
| Swing speed | 12.5 rpm | p. 28 |
| Travel speed (Low/High) | 3.4/5.3 km/hr | p. 13 |
| 210NLC-7 | ||
| Operating weight | 22000 kg | p. 13 |
| 210N7-2 | ||
| Operating weight | 21150 kg | p. 14 |
Hyundai R210NLC-7, 210NLC-7 Common Problems This Manual Covers
Hyundai R210NLC-7 boom, arm, and bucket power weak, all hydraulic functions slow and sluggish
Check main relief valve setting against the 330 kgf/cm2 spec on page 28. Inspect the suction strainer and return filter; a clogged element forces the bypass relief open at 1.5 kgf/cm2 (21 psi) and sends unfiltered oil back to tank. Drain and refill if the fluid looks cloudy or smells burnt.
Manual Section: Hydraulic and Mechanical System Troubleshooting p. 28Engine cranks slowly on cold mornings, sometimes won't start at all after sitting overnight
Test battery voltage under load before condemning the starter; a weak pair cranks slowly long before it dies outright. Check for air in the fuel lines, then replace the water separator and fuel filter. After pulling covers for starter access, torque the hood bolts to 12.8±3.0 kgf·m (92.6±21.7 lbf·ft) per page 566.
Manual Section: Electrical System Troubleshooting p. 566Engine oil pressure warning lamp flickers during operation, buzzer keeps sounding after start
Shut down immediately and check the oil level; the system holds 24 L, listed on page 27. Top up with the correct grade, then inspect pipe joints and the filter head for leakage. Replace the oil filter cartridge if overdue, since a restricted element drops pressure at hot idle first. Restart and watch the lamp before loading the machine.
Manual Section: Electrical System Troubleshooting p. 27Swing speed low and upper structure drifts after stopping, worse when parked on a slope
Measure swing speed against the 12.5 rpm spec on page 28. Check pilot pressure next; the pilot relief valve should hold 35 kgf/cm2, and a weak pilot circuit slows every function on the machine. Inspect the swing motor relief valves and brake release circuit, then retest on firm level ground before condemning the swing motor.
Manual Section: Hydraulic and Mechanical System Troubleshooting p. 28Travel speed falls off on one track, machine pulls to one side in a straight line
Verify travel speed against the 3.4/5.3 km/hr low and high range spec on page 13. Compare case drain flow between both travel motors; the slow side usually shows heavy drain. Check track tension and roller condition, and retorque loose track roller mounting bolts to 54.7 ± 5.0 kgf·m (396 ± 36.2 lbf·ft), listed on page 563.
Manual Section: Hydraulic and Mechanical System Troubleshooting p. 13Frequently Asked Questions
How do I clear fault codes on a Hyundai R210NLC-7 excavator?
To delete all recorded error codes, select the recorded error (TIME Er) display mode on the cluster. Press the engine speed switch and the select switch simultaneously for 2 seconds or more. The display will change to 'TIME Er : 00', indicating that the CPU controller has deleted all recorded error codes from the memory. p. 222
What does the hydraulic oil temperature warning light mean on a Hyundai R210NLC-7?
The hydraulic oil temperature warning lamp operates and the buzzer sounds when the temperature of the hydraulic oil exceeds 105°C (221°F). If this lamp blinks, you should check the hydraulic oil level and inspect the area between the oil cooler and radiator for debris. p. 239
How do I find Hyundai R210NLC-7 error codes?
You can view current or recorded error codes by selecting the error display mode on the cluster. This is done by touching the SELECT switch two times while pressing the BUZZER STOP switch. The cluster will then display the error codes on the screen. p. 222
What is the tightening torque for the main pump mounting socket bolts?
The tightening torque for the main pump mounting socket bolts (M10 x 1.5) is 4.8 ± 0.3 kgf·m (34.7 ± 2.2 lbf·ft). p. 345
What is the standard engine speed for the H mode on the R210NLC-7?
The standard engine speed for the H mode is 2150 ± 50 rpm, measured with the accel dial set at the 10 (Max) position. p. 308
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