Description

Hitachi Sumitomo 330-3, 330LC-3, 350H-3, 350LC-3, 350LCN-3 Parts Catalog

I’ve chased wrong part numbers more times than I care to count. One mis-ordered fuel line can shut down a job for half a day. That’s why I keep a factory parts catalog on the bench, not some aftermarket reprint that guesses at dimensions. This Hitachi Sumitomo 330-3, 330LC-3, 350H-3, 350LC-3, 350LCN-3 Parts Catalog is the real file – 369 pages of OEM part numbers, exploded views, and compatibility codes. If you work on these excavators and you don’t have the correct part number before you call the dealer, you’re wasting money.

Engine and Fuel System Coverage

Engine parts aren’t in this catalog – Hitachi kept those in a separate engine parts catalog. But everything around the engine is here. Look under ENGINE SUPPORT, OIL FILTER PIPING, INTER COOLER PIPING, RADIATOR, RESERVE TANK, AIR CLEANER sections. The FUEL TANK and FUEL PIPING sections list every line, fitting, and bracket with the factory number. Need the fuel return hose for a 350LC-3? Flip to the FUEL PIPING chapter and find the exact part. No guesswork.

369 Pages: Why Page Count Matters

I’ve seen cheap parts catalogs that cram fifty models into a hundred pages. This one runs 369 pages for five model variants: 330-3, 330LC-3, 350H-3, 350LC-3, 350LCN-3. That density means each part gets its own illustration and reference number. The MAIN PIPING section alone has four sub-sections because there are different configurations for standard and long-track machines. You pay for the completeness up front, but you save hours of cross-referencing later.

Compatibility Symbols: How to Read Them

Flip to the FOREWORD (page 3 of the PDF). You’ll see symbols like Y (unconditional interchangeability), I (can substitute but not vice versa), T (interchangeable as a set), P (obsolete, use substitute). If a part number has an OP notation, it’s optional – not on standard machines. The catalog also marks OS (oversize) and US (undersize) right after the standard part. When you’re rebuilding a travel motor, you need that oversize bearing number; it’s listed here, not in some aftermarket database.

Does This Catalog Cover the Undercarriage?

Yes. The UNDERCARRIAGE section covers TRACK FRAME, TRACK GUARD, SWING BEARING, TRAVEL DEVICE, FRONT IDLER, ADJUSTER, UPPER ROLLER, LOWER ROLLER, and TRACK-LINK assemblies. There are separate listings for standard (STD.) and long-track (LC) machines. If you need a lower roller for a 330LC-3, the catalog shows the LC-specific part number. The TRAVEL PIPING chapter is split between STD. and LC because the hose routing differs. I’ve had mechanics order the wrong travel motor cover because they assumed it was universal – not with this catalog.

Real-World Use: Boom Cylinder Seal Replacement

Say you’re rebuilding a boom cylinder on a 350H-3. The BOOM CYLINDER (R) and BOOM CYLINDER (L) sections list every seal, ring, and barrel nut. The catalog also marks which machines have a hose rupture valve. You get the part numbers for the seal kit, the piston, the rod – all from the factory drawing. Seven minutes with the catalog, and you have a clean order list. No returns, no waiting.

How do I find the correct part number for the fuel filter base?

Open the FUEL PIPING section. Look for the illustration labeled “FUEL PIPING”. Each part has an index number and a corresponding part number in the table. The compatibility column shows which models use that part. For example, the fuel filter head for a 330-3 might differ from a 350LC-3. The catalog marks the variant.

Does this catalog include bucket part numbers?

Yes. The FRONT-END ATTACHMENTS section lists buckets by size (1.15m³, 1.4m³, 1.62m³, 1.86m³) and tooth type (Super V tooth, side-pin tooth). Also covers bucket cylinders and linkage pins.

Related Manuals You Might Need

• Hitachi Zaxis 330-3 350-3 Series Technical Manual
• Hitachi ZAXIS 330-3 350-3 Series Troubleshooting Manual
• HITACHI ZAXIS 330-3 350-3 Workshop Manual

For background on why OEM documentation matters, see the Automotive Industry Overview on aftermarket accuracy. That said, the only source you should trust for part numbers is the factory print. Access the Factory Manual and put it on your tablet or print the pages you need. Your parts counter guy will thank you.