Personal safety, repair precautions and preparation before disassembling open the 754-page Kobelco SK160LC and ED190LC Shop Manual (OEM ID YM91ZU0009P1 NA) for these hydraulic excavators. From there, this Kobelco SK160LC shop manual PDF moves through machine dimensions, lifting capacities, transportation data, boom, arm and bucket dimensions, special tools such as the track spring set jig, and the standard maintenance time table. Hydraulic schematics lay out the machine's oil circuits, and troubleshooting charts help you trace a fault back to its source. Wiring diagrams cover the electrical side. Check pilot system operating pressure against 50 kgf/cm² (710 psi), and torque a 1/4 PF O-ring sealing joint to 36 ± 2.0 N·m (27 ± 1 lbf-ft). When your job is measuring hydraulic oil pressure or engine speed, the maintenance standards and test procedures section sets out the method. The pages are bookmarked and text-searchable, and they print cleanly as a working copy, so order yours and keep a set beside the machine.
What's Inside This Kobelco SK160LC, ED190LC Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information and Safety | 8-21 | Personal Safety |
| Specifications | 22-63 | Operator Cab Nomenclature, Machine Dimensions, Specifications and Performance, Machine and Components Weights, Transportation, Type of Track Shoes, Type of Bucket |
| Attachment Dimensions | 64-77 | Boom, Arm, Bucket |
| Tools | 78-97 | Torque Specifications for Capscrews and Nuts, Screw and Tool Sizes, Torque Specifications for Joints and Hoses, Torque Specifications for Sleeve Type Tube Fittings, Plugs |
| Standard Maintenance Time Table | 98-119 | Working Standards for Time Tables |
| Maintenance Standards and Test Procedures | 120-155 | How to Use Maintenance Standards and Precautions, Measuring Engine Speed, Measuring Hydraulic Oil Pressure, Pilot Relief Valve Measurement and Adjustment, Main Relief Valve Measurement and Adjustment |
| Mechatro Control System | 156-188 | Mechatro Controller, Self Diagnosis Display Function, Trouble History Diagnosis, Mechatro Control Equipment |
| Hydraulic System | 189-204 | Function and Features of Hydraulic Circuit, Hydraulic Control System Logic, Symbols and Components, ED190LC Hydraulic Circuit |
| Electrical System | 205-216 | Electric Circuit Diagram, Harness Connection, Electric Equipment List, SK160LC and ED190LC Electrical Schematic Diagrams |
| Components System | 217-283 | Hydraulic Pump - Regulator, Attachment Control Pilot Valve, Propel (Travel) Control Pilot Valve, Main Control Valve |
| Air Conditioner System | 284-326 | Construction and Piping, Mechanism of Cooling Circuit, Expansion Valve, Receiver Dryer |
| General Disassembly and Assembly | 327-332 | Contents of General Disassembly and Assembly, Specification of Tightening Torque |
| Attachments | 333-364 | Attachment Assembly and Name, Removing and Installing, Disassembling and Assembling |
| Upper Structure | 365-558 | Machine Preparation, Fuel Tank, Hydraulic Oil Tank, Main Hydraulic Pump |
| Travel System | 559-645 | Designation and Location of Undercarriage, Upper Roller, Lower Roller, Front Idler (Idler Adjuster Assembly) |
| Mechatro Control | 646-658 | Check Points for Mechatro System, Actuator Table, Troubleshooting Outline for Mechatro Control |
| Troubleshooting (Hydraulic System) | 659-692 | No Operation Is Possible, All Attachment Motions Are Slow, Only the Bucket Motion Is Slow |
| Troubleshooting (Electrical System) | 693-728 | Electric System Table, Multidisplay Self Diagnostic Table, All Motions Are Slow |
| Troubleshooting (Engine) | 729-747 | Trouble Diagnosis Table-Engine, Starter Does Not Run, Engine Output Insufficient |
| Engine | 748-754 | Mitsubishi 4D34 - TLEF Diesel Engine Catalog |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Tightening Torque for Joints for Piping (O-ring sealing type) - 1/8 PF | 17 ± 2.0 N·m (12 ± 1 lbf-ft) | p. 85 |
| Tightening Torque for Joints for Piping (O-ring sealing type) - 1/4 PF | 36 ± 2.0 N·m (27 ± 1 lbf-ft) | p. 85 |
| Engine Output Rating | 82 KW (111 HP) @ 2,200 rpm | p. 32 |
| Maximum Torque | 382 N-m (283 Lb-ft) @ 1,800 rpm | p. 32 |
| Pilot System Operating Pressure | 50 Kgf/cm² (710 psi) | p. 33 |
| Upper Attachment Operating Pressure | 350 Kgf/cm² (4980 psi) | p. 33 |
| Power Boost/Heavy Lift Operating Pressure | 385 Kgf/cm² (5470 psi) | p. 33 |
| Swing Motor Brake Release Pressure | 2.3 ~ 5.0 MPa (334 ~ 725 psi) | p. 268 |
| Travel Motor Brake Release Pressure | 1.08 MPa (157 psi) | p. 636 |
| Swing Bearing Grease Capacity | 8.7 ± 0.87 kg (19 ± 2 lbs) | p. 637 |
Kobelco SK160LC, ED190LC Common Problems This Manual Covers
Kobelco SK160LC and ED190LC travel motor stuck in high, motor speed does not change from high to low
Check the pilot valve spool first. The travel motor chart on page 634 lists a stuck pilot valve spool as the cause when motor speed will not drop from high to low, so repair the pilot valve. Before you open any line, relieve all oil system pressure (page 14). Let oils cool to warm, not hot, and release hydraulic tank pressure (page 143).
Manual Section: Travel Motor Troubleshooting p. 634Travel motor does not start, pressure rises but the negative brake will not release
Clean or replace the orifice in the brake release pressure path, then check the brake valve spool, following page 634. Verify release pressure reaches 1.08 MPa (157 psi) per page 636. If it still binds, replace stuck friction and separator plates, and replace the brake piston O-rings or piston if defective. Relieve all oil system pressure before disconnecting lines (page 14).
Manual Section: Travel Motor Troubleshooting p. 634Swing motor does not rotate at all and hydraulic motor pressure reads low
Adjust the circuit relief valve setting to the correct value first, following page 477. If pressure still reads low, pull the plunger and clean a clogged orifice, free or replace a sticking plunger, and replace the plunger if the seat is scored. Last, replace the swing shockless valve cartridge or block. Relieve all oil pressure before removing fittings (page 14).
Manual Section: Swing Motor Troubleshooting p. 477Swing motor brake torque is insufficient when the swing brake is applied
Check the brake release pressure circuit and correct it, comparing against 2.3 to 5.0 MPa (334 to 725 psi) on page 268. Then disassemble the swing motor brake per page 477: replace friction plates worn beyond standard, repair a stuck brake piston, and replace parts with a broken friction plate spline. Relieve all oil pressure before opening lines (page 14).
Manual Section: Swing Motor Troubleshooting p. 477Swing gear reduction unit casing temperature is high and the reduction housing runs hot
Check the reduction unit oil level and fill to the specified level, following page 478. Then check the swing bath grease and fill it up; page 637 calls for 8.7 ± 0.87 kg (19 ± 2 lbs) in the grease bath. If heat persists with oil and grease correct, replace the reduction unit for damaged gear and bearings. Let the casing cool first; page 141 warns of hot fluids and surfaces.
Manual Section: Swing Gear Reduction Troubleshooting p. 478Attachment control pilot valve secondary pressure does not rise during operation of the handle
Check primary (P) pressure first against the 50 Kgf/cm² (710 psi) pilot system pressure on page 33 and correct any low reading. Then, per page 440, replace broken or fatigued secondary pressure springs, replace the spool if bore clearance is excessive, and adjust the circular plate to remove push rod gap. Replace spools worn 1 mm or more. Relieve oil pressure before disconnecting lines (page 14); fit new O-rings and seals.
Manual Section: Attachment Control Pilot Valve Troubleshooting p. 440Frequently Asked Questions
How do I reset or clear fault codes on a Kobelco SK160LC/ED190LC?
To clear the trouble history, display the trouble history mode first. Then, press the Work Mode Select Switch and the Buzzer Stop Switch concurrently for 10 seconds or more. When the erasing is completed, the display will show 'NO ERROR'. p. 172
How do I access the Kobelco SK160LC/ED190LC error-code display?
To access the trouble history, turn the starter switch to 'ON'. Press the Buzzer Stop Switch 5 times in sequence within 10 seconds. The gauge cluster will then display the error data and hour meter. p. 172
What are the Kobelco SK160LC, ED190LC torque specs for final drive, swing motor, hydraulic pump, and track bolts?
The tightening torque for the track shoe bolts is 855 ± 42 N.m (631 ± 31 lbf-ft). The swing motor assembly to the upper frame mounting capscrews must be tightened to 539 ± 54 N.m (398 ± 40 lbf-ft). The main hydraulic pump bracket mounting capscrews are tightened to 64.7 ± 5.9 N.m (48 ± 4 lbf-ft). p. 566
How do I check the main relief valve setting on a Kobelco SK160LC, ED190LC using the service diagnostic mode?
Insert the key, depress the Buzzer Stop Switch on the cluster gauge, and hold while turning the key to 'ON' without starting the engine. Release the switch to enter Service Diagnostic mode. Advance to Screen No. 14 to view the voltage of the high-pressure sensor and the computer-generated oil pressure at the P1 and P2 pumps. p. 141
What is the specified oil capacity for the swing motor gear reduction unit on the Kobelco SK160LC, ED190LC?
The swing motor gear reduction unit requires 4.7 liters (1.24 gallons) of SAE 90 GL4 gear oil. Additionally, the swing motor casing itself requires 0.8 liters (0.2 gallons) of hydraulic oil. p. 269
How quickly can I access this Kobelco SK160LC manual after buying?
Instant PDF download. You get the full 754-page searchable Shop Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Am I able to print pages from this Kobelco SK160LC manual?
Yes. Printing works from any reader and any printer, for your own shop use.
