Description

Case CX330, CX350 Service Manual

If you are wrenching on a Case CX330 or CX350 and you don’t have the factory Service Manual on your bench, you are asking for a come-back. I have seen too many guys guess at swing brake adjustments or torque the final drive to some aftermarket number and then wonder why the track walks off. This isn’t a Chilton’s. It is the OEM book—623 pages of Case-issued procedures, not a third-party rewrite. Every spec in here was verified on a test stand at the factory. You want to pull the engine? Section 2000 covers removal and installation of the engine with the correct lift points and bolt sequence. Need to know the charge pressure for the upperstructure hydraulics? That is in Section 8001. Trust me: guessing costs parts and time.

Engine Overhaul: Removal and Installation

Section 2000 gives you the full procedure for pulling the engine—radiator, oil cooler, and all the brackets. The manual tells you which lines to tag before disconnecting and what size socket you need for the bellhousing bolts. There is also an engine specification page that lists bore, stroke, and firing order. Aftermarket manuals will tell you “remove engine” and leave you hanging. This one walks you through the hoist setup and the alignment trick for the flywheel housing. Page references are scattered through the text, but the key torque values for the main bearing caps are in the general torque data section 1001. Don’t skip that.

Swing Brake: Factory Procedure (page 40)

The swing brake on these machines can drag if you get the clearance wrong. Page 40 in the electrical system section (4001) covers swing brake checking and adjustment. It is not a five-minute job. You have to get the pressure gauge on the brake release port and then measure the wear on the friction discs. The manual also explains the backup mode if the controller locks you out. I have had techs try to adjust the brake with the machine running—stupid and dangerous. The manual has a warning box that tells you to chock the tracks and lower the boom before even opening the access cover. Read that.

Fuel System and Electrical Diagnostics

Section 3 (Fuel System) covers the fuel tank removal and the engine electronic regulator. There is a full troubleshooting chart for the fuel injection pump. Section 4 (Electrical System) is where you will spend your time if the machine won’t start. The diagnostic code list on page 56 tells you what each fault means. Also, there is a procedure for re-initializing the monitor display (page 62) if the screen goes blank. You also need to know the limitation of black smoke adjustment (page 22) if you are dealing with a haze issue. That procedure requires a laptop with the Case service tool. The manual tells you which software version you need.

Undercarriage and Drive Train Coverage

Track removal and installation is in Section 5001. You get the correct tension specifications for the idler wheel and the torque for the sprocket bolts. The drive train section (6) covers the swing reduction gear and the travel motor. Disassembly and assembly of the swing gear (section 6004) requires a press and specific shim selection. The manual lists the dial indicator setup. For the final drive, you need the special tool to remove the hub—part number is given. If you are rebuilding a travel motor, the hydraulic schematic is in Section 8001. That section also has all the pressure settings for the main pumps.

Why OEM Documentation Matters

I have seen aftermarket manuals that claim to cover the CX330 but then give you torque values for a different model year. The OEM book from Case is the only source you can trust for the swing brake pressure (page 40) and the engine idle checking procedures (page 24). There is no guesswork. The document is scanned from the original Case binder—no missing pages, no blurred schematics. You get the factory torque table in both Nm and ft-lb. Compare that to a PDF that says “torque to spec” without giving the number. That is how you snap bolts in the final drive housing. Manual Transmission Manual Transmission might be a different topic, but the principle is the same—use the right data.

Who Needs This Manual

If you run a shop that takes on Case excavators, this manual pays for itself on the first swing brake job. DIY guys who own a CX330 and want to do their own fuel system work also need it—the diagnostic code list alone saves hours of head-scratching. Beginners should not touch the hydraulic pressures without reading Section 8001 first. The manual assumes you have basic tools, but it does not assume you know the machine. Every step is numbered, and each warning is in bold. You can also pair it with related documentation like the Case CX330 CX350 2002 Service Manual if your machine is an early model. For later variants, check the CASE CX330 CX330NLC CX350 2006 Service Manual. If you work on the B-series line, the Case CX210B, CX230B, CX240B 2009 Service Manual – OEM Factory Specs covers similar systems. Manual Transmission Manual Transmission is not relevant here—stick with the excavator manual.

FAQ

Does the manual include wiring diagrams for the CX350?

Yes. Section 4 (Electrical System) contains full wiring schematics, connector pinouts, and troubleshooting flowcharts. The diagnostic code list on page 56 tells you exactly what each fault means. No generic diagrams—these are the actual Case prints.

Can I use this for a CX330 without the electronic control upgrade?

The manual covers both standard and electronic injection models. Check the engine section for the regulator type. If your machine has the older mechanical pump, some pages in Section 3 won’t apply. But the undercarriage and hydraulic sections are identical.

Stop wasting billable hours on bad aftermarket data. Access the Factory Manual for your Case CX330 or CX350 and get the real torque specs, wiring diagrams, and step-by-step procedures that the Case dealer techs use. One access, one verified PDF—623 pages of OEM authority.