Part of the Case Repair Manuals.
Wrenching on a Case CX330 or CX350? This Case CX330, CX350 service manual PDF (OEM #Cre 9-43570GB) packs 612 pages of factory procedures for both crawler excavators. You get large-format hydraulic schematics and wiring diagrams, a full electrical and electronic troubleshooting section, and step-by-step teardown procedures for the Uchida and Kawasaki main pumps, swing motor, final drives, and every attachment cylinder. Inside: undercarriage service from track and roller removal to idler wheel tension, plus hydraulic pressure settings and air conditioning troubleshooting for the cab. Torque the track pads to 1236-1510 Nm, and swap the sprocket once dimension a wears from the 83 mm standard down to the 73 mm limit. Your machine is down and every idle hour bleeds money. Bookmarked with a real text layer: search any spec, jump to any system, and get back to digging.
What's Inside This Case CX330, CX350 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 3-34 | Safety, General Information and Standard Torque Data |
| Engine | 35-46 | Removal and Installation of the Engine, Radiator and Oil-Cooler, Engine Specifications, Disassembly and Assembly of the Engine |
| Fuel System | 47-52 | Fuel Tank, Fuel Engine System |
| Electrical System | 53-158 | Electrical and Electronic Troubleshooting, Maintenance of Batteries and Connecting a Booster Battery, Main and Engine Electronic Control Boxes |
| Undercarriage | 159-230 | Removal and Installation of Tracks, Rollers, Sprocket, Idler Wheel and Tension Shock Absorber |
| Drive Train | 231-268 | Drive Motor and Final Drive Transmission Removal and Installation, Swing Reduction Gear, Removal and Installation, Disassembly and Assembly |
| Pressure Release and Decontamination | 269-278 | Pressure Release, Vacuum Pump Installation, Hydraulic System Decontamination, Bleeding Air |
| Hydraulic Specifications and Troubleshooting | 279-306 | Hydraulic Pressure Settings, Troubleshooting Travel Drift, Swing Motor Leaks, Cushion Control Valve |
| Hydraulic Reservoir and Pump Removal | 307-322 | Hydraulic Reservoir Removal, Main Hydraulic Pump Removal, Pilot Pump Removal, Pump Coupling |
| Main Control Valve and Attachment Cylinders | 323-352 | Main Control Valve Removal, Boom Cylinder Removal, Dipper Cylinder Removal, Bucket Cylinder Removal, Hydraulic Swivel |
| Pilot Function Blocks and Control Levers | 353-370 | Pilot Function Blocks, Travel Pedal Block, LH Control Lever, RH Control Lever, Swing Motor Removal |
| Main Hydraulic Pump Disassembly and Assembly | 371-404 | Uchida Pump Disassembly, Kawasaki Pump Disassembly, Regulator Control, Pump Assembly |
| Control Valve and Safety Valves | 405-520 | Control Valve Disassembly, Load Holding Block, Safety Valves, Cushion Control Valve, Six Solenoid Valve Block |
| Hydraulic Functions and Motor Maintenance | 521-564 | Hydraulic Functions, Travel High Speed Circuit, Swing Circuit, Swing Variable Priority, Travel Hydraulic Motor |
| Upperstructure | 565-612 | Turntable and Counterweight, Boom, Dipper and Bucket, Seat and Seat Belt, Cab and Cab Equipment, Air Conditioning Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Sprocket dimension a standard | 83 mm | p. 21 |
| Sprocket dimension a limit | 73 mm | p. 21 |
| Track pad torque setting | 1236-1510 Nm | p. 31 |
| Valve torque | 14.7 Nm | p. 50 |
| Fuel tank screw torque | 232.4 to 276 Nm | p. 50 |
| Battery voltage (with the engine shut down) | 23-26 V | p. 121 |
| Alternator voltage (with the engine speed above the throttle mid-point) | 27.5-29.5 V | p. 121 |
| Engine Oil Capacity | 33 litres | p. 17 |
| Fuel Reservoir Capacity | 580 litres | p. 17 |
| Hydraulic Fluid Reservoir Capacity | 175 litres | p. 17 |
| Total Hydraulic Circuit Capacity | 350 litres | p. 17 |
| Engine Max Speed | 2000 rpm | p. 17 |
Case CX330, CX350 Common Problems This Manual Covers
Case CX330 hydraulic functions weak and slow, boom and bucket movements sluggish under load
Check the hydraulic reservoir level first; it holds 175 litres and the full circuit takes 350 litres (capacities on page 17). Release system pressure using the procedure on page 269 before cracking any fitting, then pull the return and pilot filters and inspect for metal or water. Dark or milky oil means contamination; follow the decontamination steps on page 269 and the troubleshooting charts starting on page 279.
Manual Section: Hydraulic System Troubleshooting p. 269Tracks keep derailing on side slopes, track sag looks loose and links wear fast
Measure track sag against the 340 to 360 mm spec on page 19 and adjust at the tension cylinder grease fitting, procedure on page 159. While you're under there, compare sprocket tooth dimension to the 73 mm wear limit on page 21 and check idler wheels against their 550 mm limit. Retorque loose track pads to 1236-1510 Nm.
Manual Section: Undercarriage (Tracks) p. 159Engine hard to start, runs rough and loses power after refueling from bulk storage
Drain water and sediment from the bottom of the 580 litre fuel tank, then replace the fuel filter and purge air from the system. If the drain valve weeps after service, reseat it and torque to 14.7 Nm per page 50. Removal and cleaning steps for a badly contaminated tank start on page 47.
Manual Section: Fuel Tank p. 47Slow cranking in the morning, intermittent dash warnings, batteries seem to die overnight
Test battery voltage with the engine shut down; you want 23-26 V across the series pair, spec on page 121. Start it, hold the throttle above mid-point, and confirm alternator output of 27.5-29.5 V. Clean and tighten corroded terminals and grounds; if voltage still sags, work through the circuit troubleshooting procedures starting on page 53.
Manual Section: Electrical and Electronic Circuit Troubleshooting p. 121Coolant temperature climbs in warm weather and cab air conditioning barely cools
Shut down, let it cool, and blow the cooling pack out from the fan side with compressed air; debris packs between the radiator and oil cooler where you can't see it. Check fan belt tension and condition. Restart and idle at 900 rpm to confirm temperature stabilizes. If the cores stay crusted, radiator and oil cooler removal for cleaning starts on page 35.
Manual Section: Radiator and Oil-Cooler p. 35Frequently Asked Questions
How do I enter diagnostic mode on a Case CX330?
To enter diagnostic mode, press the travel mode and work mode switches simultaneously for a minimum of 3 seconds. This will allow you to access the monitor displays, including machine condition, diagnostic codes, and machine history. p. 104
How do I reset the service light on a Case CX330 excavator?
To reset the maintenance period hourmeter when the 'SERVICE DUE' message is displayed, press the audible alarm cut out switch for 10 seconds. p. 117
What is the torque specification for the engine retaining screws?
The engine retaining screws must be tightened to a torque of 313 ± 25 Nm. p. 39
What is the capacity of the hydraulic fluid reservoir for the CX330/CX350?
The hydraulic fluid reservoir capacity is 175 litres. p. 17
What is the correct torque for the swing motor retaining screws?
The swing motor retaining screws must be tightened to a torque of 568.4 to 649.4 Nm. p. 238
How quickly can I access this Case CX330 manual after buying?
Delivery is instant: a 612-page searchable PDF is yours the second checkout clears. Laptop, tablet, or phone, all fine.
Are there any print restrictions on this Case CX330 manual?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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