Part of the Case Repair Manuals.
Looking for a Case CX290B repair manual PDF you can actually trust? This 488-page factory book (OEM #87637610 NA) covers the complete crawler excavator, from engine and pump control through swing, travel, boom, arm, and bucket hydraulics. Inside: full electric circuit diagrams with connector wiring layouts, large fold-out hydraulic and electrical schematics, and step-by-step pressure measurement, adjustment, and air bleed procedures. You also get error code lists, troubleshooting charts that run all the way to the air conditioning system, and torque data for standard and special fasteners. Set the main relief pressure to 34.3 MPa, and fit a true 6 micron return filter instead of whatever the parts counter hands you. Chasing an electrical fault without a diagram is a long afternoon. Bookmarked and keyword-searchable; pull the schematic up on your tablet at the machine and get back to digging.
What's Inside This Case CX290B Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety, General Information and Standard Torque Data | 4-9 | General Information, Inspection, Bearings, Service Parts, Lubrication, Standard Torque Data |
| General Specifications and Special Torque Settings | 10-31 | Fluids, Lubricants, Specifications, Component Weight, Special Torque Settings, Machine Overall Dimensions |
| Electrical and Engine Functions, & Service Support | 32-171 | Engine Speed Control, Engine Start/Stop Control, Pump Control, Monitor Control, Service Support, Diagnostic Tool |
| Electrical Equipement & Electric Circuit Diagrams | 172-233 | Electrical Equipment Layout, Electric Circuit Diagram, Bloc Diagram, Electrical Connector Wiring Diagram |
| Specifications, Troubleshooting, Inspections and Hydraulic Pressu | 234-285 | Hydraulic Equipment Layout, Identification of Hydraulic Components, Pressure Measurement, Pressure Adjustment, Air Bleed Procedure |
| Hydraulic Functions | 286-359 | Travel Circuits, Swing Circuits, Boom Circuits, Arm Circuits, Bucket Circuits, Horsepower Boost Circuits |
| Hydraulic Component Functions | 360-441 | Hydraulic Pump, Motor, Control Valve, Pilot Valve, Cushion Valve, Selector Valve |
| Air Conditioner Functions and Troubleshooting | 442-485 | Air Conditioner Overall Diagram, Explanation of Control, Actuator Inspection, Self-Diagnosis Function, Air Conditioning Troubleshooting |
| Large Size Hydraulic Schematics | 486 | Main Pump, Control Valve, Hydraulic Swivel, Travel Motor, Swing Motor, Boom Cylinder |
| Large Size Electrical Schematics | 487-488 | Controller, Engine Controller, Monitor Display, Fuse Box, Relay, Battery |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Return filter (inside tank) | 6 µm | p. 18 |
| Pilot line filter (inside housing) | 8 µm | p. 18 |
| Main filter | 4 µm | p. 18 |
| Pre-filter | 8 µm | p. 18 |
| Main relief set pressure (standard) | 34.3 MPa | p. 20 |
| Main relief set pressure (power boost) | 37.3 MPa | p. 20 |
| Alternator L terminal voltage threshold | 10 V | p. 82 |
| Return filter clog pressure switch ON pressure | 0.1 MPa (1 bar / 14.50 psi) | p. 93 |
| Fuel flow restriction start temperature | 100°C (212°F) | p. 113 |
| Overheat alarm temperature | 105°C (221°F) | p. 113 |
| Operating Weight | 29800 kg | p. 17 |
| Engine Output | 154 kW | p. 17 |
Case CX290B Common Problems This Manual Covers
Case CX290B loses power and runs rough under load, engine surges and stumbles at high idle
Drain the water separator and replace both fuel filters; the pre-filter is rated 8 microns and the main filter 4 microns per the specs on page 18. Bleed air from the fuel system until fuel runs clear with no bubbles, then run the engine under load and confirm the surge is gone.
Manual Section: Specifications and Special Torque Settings p. 18Engine cranks but will not start, monitor panel displays a stored engine fault code
Pull the codes through the DIAG2 screen and match them against the error code reference. Check battery voltage while cranking; if a coolant temperature sensor code is stored, the controller substitutes a fixed -20°C (-4°F) starting value, so test that sensor and its wiring before condemning the injectors.
Manual Section: Engine Control TroubleshootingDigging power drops off when hydraulics warm up, boom feels weak and travel slows on grades
Connect a gauge and measure main relief pressure with the circuit stalled. Standard setting is 34.3 MPa with power boost at 36.8 MPa, listed on page 264. If pressure checks out, run the pump flow measurement and compare readings against the flow curves; low flow points to a worn pump rotating group.
Manual Section: Hydraulic Pressure Troubleshooting p. 264Coolant temperature climbs past normal during trenching, overheat alarm sounds in warm weather
Clean the radiator and oil cooler cores with compressed air, then check coolant level and hose condition. The controller starts restricting fuel at 100°C (212°F) and the alarm trips at 105°C (221°F), per page 113. If temperature keeps climbing toward the 120°C shutdown point, test the thermostat and fan drive.
Manual Section: Electrical and Engine Functions, & Service Support p. 113Boom drops slowly with controls in neutral, arm chatters and jerks at the start of a shift
Bleed air from the boom and arm cylinder safety valves following the service procedures starting, cycling each cylinder slowly through full stroke. If drift continues, test the overload relief valves; boom down should hold 29.4 MPa and the other circuits 38.7 MPa, per page 273. Replace any valve that bleeds off.
Manual Section: Hydraulic Pressure Troubleshooting p. 264Frequently Asked Questions
How do I reset the trouble log on the Case CX290B?
To reset the trouble log, hold down the washer switch and the light switch simultaneously for 10 seconds while in the diagnostic (DIAG) screen. p. 131
How do I access the service support screen on the Case CX290B?
To access the service support screen, hold down both the travel high-speed switch and the horn volume select switch on the switch panel for 3 seconds. p. 117
How do I reset the anti-theft function on the Case CX290B?
To disable the anti-theft function, disconnect the anti-theft knob terminals (VG purple/green and BG black/green) while the key is switched OFF. This will cancel the registered password. p. 147
What is the standard torque setting for an M16 hexagon screw?
The standard tightening torque for an M16 hexagon screw is 156.9 Nm (115.7 lb-ft). p. 9
What is the capacity of the hydraulic oil tank for the CX290B?
The capacity of the hydraulic oil tank is 147 liters (38.43 gallons). p. 18
Is this Case CX290B manual a download or a disc?
A single searchable PDF file of 488 pages, downloadable right after payment. Nothing ships, nothing waits in the mail.
Is this Case CX290B manual print-friendly?
Yes. The PDF is DRM-free, so printing works from any reader and any printer.
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