Name: Kobelco SK220, SK220LC Shop Manual with Wiring Diagrams
Author: Kobelco

A swing that drifts or a boom that creeps parks your excavator until you find the cause, and this 912-page Kobelco SK220 shop manual PDF (OEM ID S5LQ0005E) is built for that job on the SK220 and SK220LC hydraulic excavators. Hydraulic schematics trace flow from the twin pumps through the control valve and pilot circuit to the swing motor, travel motors and cylinders, while wiring diagrams map the electrical and air-conditioner circuits. Troubleshooting is sorted by system, the engine section takes up over two fifths of the book, and pump, valve, swivel joint and reduction unit overhauls fill the last quarter. Set primary pilot pressure at RV13, where one turn of the adjust screw moves about 14.4 kgf/cm² (205 psi), then torque the sprocket cap screws to 57.5 ± 5.5 kgf·m (415 ± 40 ft-lbs). A wrong guess on a final drive buys a second teardown. The bookmarked, searchable file prints clean, so your bench copy can soak up hydraulic oil.

What's Inside This Manual

System	Pages	Key Topics
Preventive Maintenance	2-5	Lubrication, Maintenance Guide, Operator's Manual, Safety Precautions
Specification	6-21	Name of Components, Specifications and Performance, Type of Shoes, Type and Combination of Attachments, Working Ranges of Attachments, Lifting-Up Ability Diagram
Location and Weight of Components	22-27	Location of Components, Weight of Components, Transportation Weight
Maintenance Standards and Test Procedures	28-30	Pressure Measurement, Engine Revolution, Circuit Pressure, Independent Relief Valves, Negative Control Relief Pressure, Cylinder Speed
Operation and Controls	31-47	Pressure Measurement and Adjustment, Cylinder Speed, Cylinder Oil Tightness, Swing Performance, Travel Performance
Troubleshooting	48-71	Drive System, Hydraulic System, Swing System, Travel System, Attachment System
Working Standards	72-76	Tightening Torques, Capscrews, Nuts, Sleeves, Screw Locking Compounds
Systems: Drive, Hydraulic, Swing, Travel, Attachments, Control, Upper Frame, Electrical, Air-Conditioner, Engine	77-260	Drive System, Hydraulic System, Swing System, Travel System, Electrical System, Air-Conditioner System, Engine Specifications
Engine: General, Lubrication, Fuel and Engine Control, Cooling, Intake and Exhaust, Engine Electrical, Clutch	261-401	Engine General, Lubrication System
Fuel and Engine Control	402-485	A Type Injection Pump, RSV Type Governor, RFD Type Governor, Feed Pump, Bleeding of Fuel System, Pump Drive Case, Injection Nozzle, Water Separator
Cooling System	486-501	Cooling Fan, Water Pump, Thermostat, Cleaning of Cooling System, Gas Leak Test, Bleeding the Cooling System
Intake and Exhaust	502-533	Air Cleaner, TO4B Type Turbocharger, Removal and Installation
Engine Electrical System	534-610	Vacuum Pump, Safety Relay, Intake Air Heater, Automatic Stop Device, Starter Relay
Clutch	611-653	Clutch Proper, Removal and Installation, Pressure Governor
Components: Hydraulic Pump, Control Valve, Hydraulic Motor, Swivel Joint, Hydraulic Cylinder, Reduction Unit	654-912	Hydraulic Gear Pump, Control Valve, Swing Control Valve, Hydraulic Motor, Swivel Joint, Hydraulic Cylinder, Reduction Unit

Quick Reference Specifications

Specification	Value	Page
All Models
Main relief pressure adjustment (tighten adjust screws)	180 deg.	p. 36
Primary pilot pressure adjustment (RV13)	1 turn = 14.4 kgf/cm² (205 psi), 1/4 turn = 3.6 kgf/cm² (51.2 psi)	p. 40
Clearance between piston and cylinder bore (D-d)	0.035 mm (0.0014 in)	p. 684
Gap between piston and caulked part of shoe (δ)	0.1 mm (0.004 in)	p. 684
Sprocket mounting cap screws torque	57.5 ± 5.5 kgf·m (415 ± 40 ft-lbs)	p. 167
Reduction unit mounting cap screws torque	55 ± 5.5 kgf·m (397 ± 40 ft-lbs)	p. 167
Rated revolution	2150 rpm/min	p. 671
Swing speed	12 rpm	p. 11
Engine oil volume (Engine body)	24 L (6.34 gal)	p. 20
SK220
Displacement capacity	97.2 (5.93) cc/rev (cuin/rev) x 2	p. 671
Fully-equipped weight	22,900 kg (50,500 lbs)	p. 11
SK220LC
Fully-equipped weight	23,500 kg (51,800 lbs)	p. 11

Brand	Kobelco
Model	SK220, SK220LC
Machine Type	Hydraulic Excavator
Manual Type	Shop Manual
Language	English
Format	Searchable PDF (Digital Download)
Pages	912
File Size	47 MB
Manual No.	S5LQ0005E
Serial Range	LQ-02214~, LL-01852~
Wiring Diagrams	Yes
Hydraulic Schematics	Yes
Torque Specifications	Yes
Bookmarked / Indexed	Yes

Kobelco SK220, SK220LC Shop Manual with Wiring Diagrams

What's Inside This Manual

Quick Reference Specifications

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