Description

Hitachi Sumitomo ZAXIS 450, ZAXIS 450 LC, ZAXIS 450H, ZAXIS 450 LCH, ZAXIS 460 LCH Parts Catalog

You own a Hitachi Sumitomo ZAXIS 450 series machine. Maybe it’s the ZAXIS 450 LC, a ZAXIS 450H, a ZAXIS 450 LCH, or the ZAXIS 460 LCH. When a control valve starts leaking or a boom cylinder seal blows, you need the right part number fast. This 274-page Parts Catalog is the factory document – the same one Hitachi Sumitomo techs use. It’s not a repair manual. It’s an exploded-view parts ID system. Every piston pump regulator, every pilot valve shuttle, every holding valve on the boom and arm is listed with its exact part number.

PUMP and MOTOR;OIL Sections: Where the Numbers Live

Flip to the PUMP section and you’ll find PISTON pump assemblies, the REGULATOR, the TILTING-PROBING unit, and the GEAR pump. Each sub-section gives you the breakdown. Need a replacement swing motor? That’s under MOTOR;OIL (SWING). The travel motors are split across multiple sheets – MOTOR;OIL (1/2) and (2/2) appear four times, each for a different variant. The catalog marks which sheet applies to your model using codes like <450,H,MT,MTH>. Pay attention to those brackets. Order the wrong motor half and you’ll have a machine down an extra week.

VALVE;CONTROL and Beyond – 5 Sheets of Details

The VALVE section is thick. VALVE;CONTROL alone runs five sheets for standard models and another five for the 450H, MT, MTH variants. Then you’ve got VALVE;PILOT for front & swing, travel, breaker, and an FC valve. Shuttle valves, solenoid valves, check valves, lock valves, holding valves for the boom and arm – all here. When a solenoid fails on a 460 LCH, the catalog shows you the exact coil and spool assembly. No aftermarket guessing. You get the OEM part number, quantity per machine, and service codes that tell you if it’s a weld‑on or kit item.

CYLINDER;BOOM and Bucket: Backhoe vs Loader Variants

This catalog covers both backhoe and loader configurations. CYLINDER sections list BOOM (R) and (L) for backhoe, then separate cylinders for the ARM, BUCKET (standard and long arm), plus the loader booms, arms, level cylinders, bucket cylinders, and dump cylinder. Each one has its own part number and quantity. If you’re rebuilding a ZAXIS 450H loader arm cylinder, you want the data on the CYL.;ARM [LOADER] page. Mixing up backhoe and loader parts will cost you time and money. That’s why you need the factory split.

OEM Parts Catalog vs Aftermarket Printouts: Why It Matters

I’ve seen guys print a generic parts list from some third‑party site. The part numbers are close, but one digit off – and you get the wrong piston seal. This catalog is the original Hitachi Sumitomo publication. The service codes (W, D, K, R, S, OP, OS) are right there on every line. Code D means “do not order separately – you need the whole assembly.” Code K says the part is in a service kit. If your aftermarket catalog misses those codes, you’ll end up with a box of useless o‑rings. Stick with the factory source. For broader context on how this fits into the Automotive Industry Overview, check that link – but for your excavator, this catalog is the only reference you need.

Shop Owners and Individual Operators Both Need This

If you run a rental fleet or a single ZAXIS 450, you need this. When a customer brings in a ZAXIS 460 LCH with a blown holding valve on the boom, you grab the catalog, find VALVE;HOLDING (BOOM), and call the dealer with the right number. No disassembly just to read a worn stamp. The PARTS INDEX at the back lets you look up any part number alphabetically. That’s 274 pages of organized data – not a scanned mess. It’s a real PDF with bookmarks for every section: PUMP, MOTOR;OIL, VALVE, CYLINDER, PARTS INDEX.

Does this catalog include torque specs or repair procedures?

No. This is a parts identification catalog. It shows exploded views and part numbers only. For torque specs and repair steps, you need the service manual.

My machine is a ZAXIS 450H with a loader attachment. Will this catalog cover the loader cylinders?

Yes. The CYLINDER section has separate entries for loader booms, arms, level cylinders, and bucket cylinders. Look for the <450,H,MT,MTH> tag next to the section heading. Those loader cylinder pages also appear in the TOC under CYL.;BOOM (R) [LOADER], CYL.;BOOM (L) [LOADER], CYL.;ARM [LOADER], CYL.;LEVEL [LOADER], CYL.;BUCKET (R) [LOADER], CYL.;BUCKET (L) [LOADER], CYL.;DUMP [LOADER], and a catch‑all CYL. <450,H,MT,MTH>. Every attachment is covered.

Stop chasing bad part numbers. The factory parts catalog is the only way to identify every valve, pump, motor, and cylinder on your Hitachi Sumitomo ZAXIS 450 series excavator. Scroll up and Access the Factory Manual now.

Related manuals you might need:

• HITACHI ZAXIS 450-480 Parts Catalog
• Hitachi Sumitomo ZAXIS850-3 Series Parts Catalog – 451 Pages
• Hitachi Sumitomo ZAXIS 600-650LCH Parts Catalog – 162 Pages