Link-Belt 290X2 Service Manual — Wiring Diagrams

$39.99 USD · one-time payment

Model: 290X2
Type: Hydraulic Excavator
835 Pages·65 MB·Searchable PDF·English·Print-Ready
  • ✓ Wiring Diagrams
  • ✓ Hydraulic Schematics
  • ✓ Torque Specs
  • ✓ Multi-Level Bookmarks (2-level navigation)
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Sumitomo 290 X2 EX electrical wiring diagram showing controllers, relays, fuses, sensors, and engine harness connections.
Link-Belt 290X2 Service Manual — Wiring Diagrams
$39.99

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A pilot circuit that will not build pressure and a 290X2 sitting dead while the crew stands around: that is the job this book answers. This Link-Belt 290X2 service manual PDF packs 835 pages of factory hydraulic, electrical, and engine coverage for the hydraulic excavator. Wiring diagrams trace every harness from main frame through cab and console, and hydraulic schematics follow each circuit, from travel and swing through boom-down regeneration and arm-in load hold. Diagnostic trouble code tables and the service support screens show you how to read faults straight off the monitor. Set the main relief at 4975 PSI (34.3 MPa) and confirm supply voltage holds between 20 and 32 volts before condemning the computer. When it is just you and a quiet machine at the far corner of the site, the bookmarked, text-searchable file answers back. Download it and read the circuit before you crack a fitting.

What's Inside This Manual

SystemPagesKey Topics
Specifications, Main Equipment and Hydraulic Layout1-12Main Data, Performance, Main Body Dimensions, Engine, Cooling System, Swing Units, Travel Lower Body, Hydraulic Equipment Layout
Work Range Diagrams and Function Tables13-35Standard Arm, Short Arm, Long Arm, Travel Circuits, Swing Circuits, Boom and Arm Circuits
Explanation of Hydraulic Circuit and Operation36-103Travel Low and High Speed Circuits, Swing Relief Cut Control, Negative Control Power Save, Breaker and Option Circuits
Main Equipment Structure, Electrical Layout and Options104-121Pump, Gear Pump, Travel Motor, Connector Pin Layout, Option Line Control
Hydraulic Circuit Diagrams and Component Structure122-249Circuit Schematics, Manifolds, Structural Diagrams, Load Hold Valve Circuits
Explanation of New Functions250-343External Switch Input Ports, Work Mode Select, Serial Communication to Monitor, Service Support Screens
Explanation of Functions and Operations344-505Gauge Level and Lever Angle, Fuel Sensor Processing, Message Display List, Trouble Mode Handling
Troubleshooting and Actuator Checks506-599Actuator Operation Checks, Diagnostic Sequences, Electrical Fault Tracing
Maintenance: Electric Equipment Checking Procedure600-602Electrical Checks, Measuring Procedures
Lower Mechanism: Track Shoe and Travel Drive Unit603-677Track Shoe, Travel Drive Unit, Disassembly and Reassembly, Maintenance Standards
Upper Swing Body: Pump678-723Pump Disassembly, Reassembly, Adjustment, Maintenance Standards
Upper Swing Body: Remote Control Valve724-766Valve Structure, Disassembly, Reassembly
Upper Swing Body: Control Valve767-774Control Valve Structure, Spool Servicing
Upper Swing Body: Solenoid Valve775-789Solenoid Valve Servicing, Testing
Upper Swing Body: Tank and Related Equipment790-803Hydraulic Tank, Fuel Tank, Filters
Cab Inner and Outer Parts: Removal and Installation804-824Cab Removal, Interior Trim, Reinstallation
Hydraulic Equipment825-835Hydraulic Equipment Servicing, Final Checks

Quick Reference Specifications

SpecificationValuePage
Set pressure of main relief valve4975 PSI (34.3 MPa)p. 109
Set pressure of overload relief valve (boom down)4264 PSI (29.4 MPa)p. 109
Main pump operating pressure (Rated)4974.8 PSI (34.3 MPa)p. 46
Main pump operating pressure (Maximum)5409.8 PSI (37.3 MPa)p. 46
Operating voltage20 to 32 Vp. 52
Power consumption17 Wp. 52
Fuel sensor lever angle (Gauge level 7)88.3%p. 345
Fuel sensor lever angle (Gauge level 6)81.0%p. 345
Hydraulic pump bolt tightening torque47.2 to 54.6 lbf·ft (64 to 74 N·m)p. 584
Hydraulic pump (M20) bolt tightening torque270.7 to 365.8 lbf·ft (367 to 496 N·m)p. 584
Suction filter replacement interval5000 hoursp. 827
Fuel capacity118.9 Gal. (450 L)p. 30
BrandLink-Belt
Model290X2
Machine TypeHydraulic Excavator
Manual TypeService Manual
LanguageEnglish
FormatSearchable PDF (Digital Download)
Pages835
File Size65 MB
Wiring DiagramsYes
Hydraulic SchematicsYes
Torque SpecificationsYes
Bookmarked / IndexedYes