Hitachi Sumitomo ZAXIS 270, ZAXIS 270LC, ZAXIS 280LC, ZAXIS 280LCN Parts Catalog – 588 Pages of Factory Spec

You ever spend three hours with an aftermarket parts list, cross-referencing six different websites, only to bolt on a fuel filter that doesn’t match the thread pitch? I have. That’s why when I see a genuine Hitachi Sumitomo ZAXIS 270, ZAXIS 270LC, ZAXIS 280LC, ZAXIS 280LCN Parts Catalog from the factory, I stop guessing. This isn’t a reprint from some third-party aggregator – this is the same PDF the dealer uses to order your swing motor seals. 588 pages of exploded diagrams, part numbers, service codes, and application notes. If you’re tracking down a replacement for the engine support bracket or trying to figure out which pilot pipe goes where, this is the only document you need.

588 Pages of Factory Part Numbers

Open the PDF and you’ll see the exact same layout the Hitachi Sumitomo engineers designed. The Parts Catalog breaks down every major assembly: upperstructure, frame, swing bearing, counterweight, Engine, Fuel tank, pump device, control valve, cab group – you name it. Each section lists the part number, description, quantity per machine, and a service code that tells you whether a piece is a precision part (H), requires local modification (W), or must be ordered as an assembly (D). No more wondering why your new o-ring doesn’t fit – the catalog shows you the exact revision level. Page numbers aren’t the point here; the bookmarks are. Jump straight to “FUEL PIPING” or “ENGINE CONTROL” without scrolling through 400 pages.

UPPERSTRUCTURE and Engine: Where Most Mistakes Happen

The upperstructure chapters cover everything from the boom foot pin to the center joint, counterweight options (6.1T and 6.5T), and all the piping for suction, delivery, return, and drain. The Engine section isn’t just a generic block – it includes engine support, oil filter piping, inter cooler piping, radiator, fan drive, and exhaust. If you need to replace a fuel feed pump or a double filter, the exploded view shows the exact bolts, washers, and seals. The fuel piping diagram alone covers the entire route from tank to injection pump. I’ve seen techs order the wrong pre-cleaner because they guessed the part number. With this catalog, you read the part number off the diagram and cross-check it against the list. Done.

4 Models, One Catalog – Picking the Right Variant

Each part listing tells you which models it fits: <270> for ZAXIS 270 and 270LC, <280> for 280LC and 280LCN. You also get regional codes like [NA] (North America), [EU1], [EU2], and [STD] for other markets. The ZAXIS 270LC and ZAXIS 280LC share some undercarriage parts, but the counterweight options differ. The ZAXIS 280LCN narrow-track variant has its own pilot piping and cab components. Flip to the COVER section and you’ll see separate diagrams for <270> and <280> covers. This level of detail saves you from ordering a cab guard that doesn’t bolt up. Compare that to an aftermarket PDF that groups everything as “fits all” – then you get to pay return shipping.

How to Use the Service Codes and Serial Numbers

Page 4 of the catalog explains the cryptic codes you’ll see next to every part. A code like “H” means that component is a precision piece – don’t try to rebuild it, order a replacement. “D” means you can’t buy the part alone; you have to get the subassembly. “Z” marks engine-related parts. The catalog also lists the machine serial number range (starting from 020001) and even breaks down changes by month or year (e.g., D03/09 means a part changed in September 2003). If you’re retrofitting a newer component onto an earlier machine, those date codes tell you what’s compatible. Never trust an online cross-reference that doesn’t show the service code. This catalog shows it.

DIYers and Shop Owners – Who Needs This

If you own one of these excavators, you need this catalog. Home garage enthusiasts who maintain their own iron will save hours of calling dealers. Beginners will avoid the frustration of ordering a fuel tank support for the wrong track width. Professional mechanics can hand this PDF to a green apprentice and say “find the part number for the solenoid valve assembly” – and the kid will learn how to read a factory document. Shop owners benefit too: accurate parts ordering means less downtime on the machine and fewer returns. I’ve seen a $2 o-ring hold up a $20,000 repair because someone ordered the wrong one. This catalog prevents that.

Source Authenticity – OEM vs Aftermarket

This is the original Hitachi Sumitomo PDF, not a scanned copy of a copy. The file name reads HITACHI_ZAXIS_270-ZAXIS_270LC-ZAXIS_280LC-ZAXIS_280LCN_Parts_Catalog_en-ja-31114003942.pdf – that’s the factory part number for the document itself. Compare that to aftermarket manuals that paste generic exploded views from a dozen different machines. The Automotive Industry Overview on Wikipedia talks about standardization, but heavy equipment is different. You need model-specific diagrams. This catalog gives you the exact part numbers for your serial number range. No guesswork.

Related Manuals for Your ZAXIS Fleet

• HITACHI ZAXIS 270 280LC Excavator Parts Catalog”>HITACHI ZAXIS 270 280LC Excavator Parts Catalog
• HITACHI ZAXIS 270 280LC Parts Catalog”>HITACHI ZAXIS 270 280LC Parts Catalog
• HITACHI ZAXIS 270 280 Parts Catalog”>HITACHI ZAXIS 270 280 Parts Catalog

FAQ – Two Things People Ask Me About Parts Catalogs

Q: Can I use this catalog to order parts for a ZAXIS 270 with a different engine?

A: Engine parts are covered in a separate Isuzu CC-6BG1T catalog – this document only includes the mounting, piping, and external components.

Q: I see service codes like “OP” and “OS” – what do they mean for my order?

A: “OP” means the part is optional – not standard equipment, but available by special order. “OS” means oversize – used when a standard part won’t fit because of wear. You’ll find oversize parts listed right after the standard part number in the catalog, usually for piston pins, cylinder liners, and seals. If you have a machine that’s been rebored, you need the oversize numbers. The catalog shows both. Also note “S” parts are service-only – they weren’t installed at the factory but are available for repairs. Don’t ignore those codes; they’ll save you from ordering a part that doesn’t apply to your machine’s configuration. The last thing you want is to rebuild a swing motor with standard seals when the bore has been machined to oversize. Trust me, I’ve seen that mistake cost a shop a full day of labor and two sets of seals. Read the code, order the right part.

You want to stop burning time and money on wrong parts? Download the Factory Manual. This PDF sits on your tablet or prints out to a binder you can keep in the cab. 588 pages of OEM data, no aftermarket shortcuts. Get it now.

For more industry context, check this Automotive Industry Overview – but remember, heavy equipment parts catalogs are a different animal. Stick with the factory document.