Part of the Hyundai Repair Manuals.
Looking for the Hyundai R110-7, R110D-7 service manual PDF? All 504 pages take this hydraulic excavator from factory teardown to final torque check: pump device, main control valve, swing and travel drives, RCV lever and pedal. You get hydraulic circuit schematics tracing the pilot and main circuits through single and combined operation, wiring diagrams with full connector tables, and a self-diagnostic section that decodes the CAPO system's error codes. Inside: step-by-step disassembly and assembly for the pump, swing device, travel motors, turning joint, and every cylinder on the boom, arm, and bucket. Set the main relief valve to 330 kgf/cm2 (4695 psi), 360 with power boost engaged, and fill the hydraulic tank to 100 liters. No more chasing pressure faults with a gauge and a hunch. Bookmarked and keyword-indexed, so you jump straight to the spec your machine needs.
What's Inside This Hyundai R110-7, R110D-7 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-18 | Safety Procedures, Protective Clothing, Emergency Preparedness, Machine Specifications, Major Components |
| Structure and Function | 35-114 | Pump Device, Regulator, Gear Pump, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Rcv Pedal |
| Hydraulic System | 115-158 | Hydraulic Circuit, Main Circuit, Pilot Circuit, Single Operation, Combined Operation, Swing Priority System |
| Electrical System | 159-206 | Component Location, Electrical Circuit, Connectors, Connector Destination, Connector Tables |
| Mechatronics System | 207-237 | Capo System Outline, Mode Selection, Power Boost, Travel Speed Control, Self-Diagnostic System, Error Codes |
| Maintenance Standard | 293-326 | Operational Performance Test, Major Components, Track and Work Equipment, Swing Bearing Play, Cylinder Cycle Time |
| Disassembly and Assembly | 327-481 | Precaution, Tightening Torque, Pump Device, Main Control Valve, Swing Device, Travel Device, Rcv Lever, Turning Joint |
| Component Mounting Torque | 482-495 | Engine System, Cooling System, Electric System, Undercarriage, Structure, Work Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Hydraulic tank capacity | 100 L (26.4 U.S. gal) | p. 34 |
| Main relief valve pressure | 330 kgf/cm² (4695 psi) | p. 32 |
| Main relief valve pressure (Power boost) | 360 kgf/cm² (5120 psi) | p. 32 |
| Battery | 2 x 12V x 80Ah | p. 31 |
| Voltage | 20~25V | p. 162 |
| Blower motor resistance | 2.5 Ω | p. 188 |
| Resistor resistance (terminal 4-2) | 1.12 Ω | p. 188 |
| Engine mounting bolt (Engine-Bracket) | 10.0 ± 0.5 kgf·m | p. 331 |
| Engine mounting bolt (Bracket-Frame, FR) | 55 ± 3.5 kgf·m | p. 331 |
| Engine Oil Quantity | 17.5 L | p. 31 |
| R110-7 | ||
| Operating Weight (R110-7) | 11200 kg | p. 20 |
| R110D-7 | ||
| Operating Weight (R110D-7) | 11900 kg | p. 21 |
Hyundai R110-7, R110D-7 Common Problems This Manual Covers
Hyundai R110-7 boom and bucket weak or slow, machine loses hydraulic power under load
Check the hydraulic oil level first; the tank holds 100 L (26.4 U.S. gal), spec on page 34. Test main relief pressure with a gauge: standard setting is 330 kgf/cm2, 360 kgf/cm2 in power boost, listed on page 32. If pressure reads low, adjust the relief valve and torque the valve body to 20.0 ± 2.0 kgf·m per page 393.
Manual Section: Attachment System Troubleshooting p. 34Pump whines and runs hot, all functions slow down after an hour of digging
Check hydraulic oil level in the 100 L (26.4 U.S. gal) tank, page 34, and top up before anything else. Inspect the full-flow filter; a clogged element forces the bypass relief open at 1.5 kgf/cm2, spec on page 117. Drain and replace contaminated oil, clean the suction strainer, and blow debris out of the cooler cores.
Manual Section: Hydraulic System Troubleshooting p. 34Boom and arm drift down under load with the control levers in neutral
Test the boom, arm, and bucket port relief valves; each should hold 390 ± 10 kgf/cm2, spec on page 312. If pressures check good, the leak is internal: measure cylinder drift against the performance test values in the Maintenance Standard section, page 293. Replace worn piston seals and torque the relief valve body to 20.0 ± 2.0 kgf·m.
Manual Section: Attachment System Troubleshooting p. 312Warning lights flicker and power cuts out intermittently with no mechanical fault found
Check grounds and connectors before throwing parts at it. Measure resistance from CN-51 pin 16 to chassis; anything over 1 Ω means a bad ground, procedure on page 265. Test connector CD-8 across pins 1 and 2 for 120 to 150 Ω per page 264. Clean corroded terminals and confirm system voltage stays between 20 and 25V.
Manual Section: Electrical System Troubleshooting p. 264Engine cranks slowly and won't start in cold weather, batteries go flat overnight
Load-test both batteries; this machine runs two 12V 80Ah batteries, spec on page 31. With the engine running, verify system voltage holds between 20 and 25V per page 162. If charging is weak, check alternator belt tension, clean the frame ground connections, and replace any battery that fails the load test before winter hits.
Manual Section: Electrical System Troubleshooting p. 31Frequently Asked Questions
What is the torque specification for the track shoe mounting bolts on a Hyundai R110-7?
The standard tightening torque for the track shoe mounting bolts (M16 x 1.5) on the R110-7 is 42 ± 4 kgf·m (304 ± 28.9 lbf·ft). p. 330
What is the error code list for the Hyundai R110-7?
The error codes for the R110-7 are listed in the 'ERROR CODES TABLE' on page 216. For example, code 01 indicates a short circuit in the accel actuator motor system, and code 36 indicates a communication error with the cluster. p. 216
What is the recommended hydraulic oil capacity for the R110-7 hydraulic tank?
The hydraulic tank capacity for the R110-7 is 100 liters (26.4 U.S. gal). p. 34
How do I bleed air from the hydraulic pump after installation?
To bleed air from the hydraulic pump, remove the air vent plug (2EA), tighten it lightly, start the engine at low idling, check that oil comes out from the plug, and then tighten the plug fully. p. 334
What is the standard torque for the main pump mounting bolts?
The standard tightening torque for the main pump mounting bolts (M16 x 2.0) is 22.1 ± 2.4 kgf·m (159 ± 17.3 lbf·ft). p. 330
How will I receive this Hyundai R110-7 Service Manual?
This is a 504-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print just the pages I need from this Hyundai R110-7 manual?
Zero restrictions. The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Reviews
There are no reviews yet.