Description

Hitachi Sumitomo ZAXIS 230, ZAXIS 230LC, ZAXIS 240H, ZAXIS 240LCH, ZAXIS 240K Parts Catalog

Spent a morning last week chasing a part number for a travel motor brake valve on a ZAXIS 240LCH. The aftermarket supplier’s cross-reference was wrong. Two hours burned – two hours I could have spent actually fixing the machine and getting it back to work. That’s why you need the factory Hitachi Sumitomo ZAXIS 230, ZAXIS 230LC, ZAXIS 240H, ZAXIS 240LCH, ZAXIS 240K Parts Catalog sitting on your bench, not some scanned reprint from a third-party site that’s missing pages. The real thing is 200 pages of OEM exploded views, part numbers, and interchange notes, exactly what the dealer parts counter uses. It’s the difference between ordering a brake valve that fits and ordering one that doesn’t.

These machines are heavy iron. The ZAXIS 230LC, 240H, and 240K share a lot of hydraulic architecture, but the differences in pumps, motors, and valve stacks will trip you up if you’re guessing. The catalog breaks it down by system. Pump section covers the main pump device, unit, regulators (left and right), and gear pump. Motor section covers swing and travel motors with brake valves and relief valves. Valve section runs five pages for the control valve alone – that’s how detailed it gets.

Straight from the factory floor.

Pump Section: Regulators and Gear Pump Breakdown

Flip to the PUMP chapter. You’ll see PUMP DEVICE, PUMP;UNIT, then REGULATOR (R) and REGULATOR (L) as separate items. Each regulator has its own part number – don’t assume they’re interchangeable. The gear pump listing follows. If you need a seal kit or a cartridge, you’ll find the OEM number referenced against the serial number range. The catalog uses service code notes like “W” for field work required and “D” for assembly-only replacement. Pay attention to those.

Motor and Brake Valve: Travel and Swing

Under MOTOR, there are two entries for MOTOR;OIL (TRAVEL) and one for MOTOR;OIL (SWING). Each travel motor page includes the VALVE;BRAKE and VALVE;RELIEF. That’s critical – the brake valve is a common failure point on these machines. The catalog shows the exact valve parts, shims, and seals. No guesswork. And if you need to order a replacement, the part number is right there with the quantity per machine.

Valve Control Sections (1/5 to 5/5) – Why Five Pages?

The control valve assembly is the heart of the hydraulic system. The catalog devotes five sub-sections to it: VALVE;CONTROL (1/5) through (5/5). Each sheet shows a portion of the spool stack, the body, cover, reliefs, pilot valves (front & swing, travel), solenoid valves, slow-return valves, and shuttle valves – which also span multiple pages. If you’re rebuilding a control valve, you need the exploded view that matches your serial number. This catalog gives you that precision. The BODY ASS’Y and COVER ASS’Y are separate line items. Don’t order a body when you only need a cover.

5 Systems Covered – Pump, Motor, Valve, Cylinder, Index

Catalog chapters follow a logical flow: PUMP, MOTOR, VALVE, CYLINDER, then the PARTS INDEX. Within those, sub-sections like VALVE;HOLDING (BOOM) and VALVE;HOLDING (ARM) and for two-piece booms, VALVE;HOLDING (POSITIONING). Cylinder section lists BOOM (R and L), ARM (mono boom and 2P-boom), BUCKET. Each cylinder includes its holding valve. That’s five systems, each with detailed part callouts. For a shop owner or fleet mechanic, this catalog replaces hours of phone calls to the dealer. For further context on how these part numbers relate to global standards, refer to Automotive Industry Overview.

Does This Manual Cover the Fuel System?

No – this catalog covers only the hydraulic and attachment components. The engine, electrical system, and fuel system are not included. For those, you need a separate engine service manual.

Source Validity: OEM Factory Print – Not a Third-Party Compilation

This is a scanned copy of the original Hitachi Sumitomo factory parts catalog, part number PIHD-EI-4. The Japanese and English text is intact. The notes on page 5 explain how to read service codes (Y, I, P, T, etc.) and interchangeability. Third-party aftermarket catalogs often merge multiple models and drop serial number ranges. This one doesn’t. Every part number is tied to a specific model and serial number break. That’s why it’s 200 pages – because they didn’t cut corners. Why spend a day cross-referencing when the factory gave you the answer? Check the related manual Hitachi Sumitomo ZAXIS 230-240 Parts Catalog 694 Pages OEM if you need the full service manual for procedures. For other models, see Hitachi Sumitomo ZAXIS 270, ZAXIS 200, ZAXIS 230, ZAXIS 225USR, ZAXIS 225US Work and Hitachi Sumitomo ZAXIS850-3 Series Parts Catalog – 451 Pages. The catalog’s structure follows standard OEM practices as outlined in Automotive Industry Overview.

FAQ

How many pages does this catalog have?

200 pages of exploded views and part numbers.

Does it include torque specs or assembly instructions?

No. This is a parts catalog, not a service manual. It provides part numbers, quantities, interchange codes, and exploded diagrams. For torque values and repair procedures, you need the service manual, which is a separate document.

Can I use this to identify the proper brake valve for my ZAXIS 230LC travel motor?

Yes. Under the MOTOR section, you’ll find two listings for MOTOR;OIL (TRAVEL). Each includes the VALVE;BRAKE and VALVE;RELIEF. The catalog shows the exact part numbers and any serial number breaks. Compare the serial number of your machine (found on the product identification number plate) to the application listing on the cover page (Serial No. 010001~). If your machine falls within that range, the parts listed are correct. The brake valve is a common wear item – using the wrong one can cause the machine to drift or fail to hold on a slope. This catalog prevents that.

Is this manual in English?

Bilingual – Japanese and English. The part numbers and diagrams are universal.

If you work on Hitachi Sumitomo excavators, you need this catalog. It saves time when ordering parts and eliminates the chance of getting the wrong hardware. I’ve seen too many machines sidelined because someone ordered a regulator for the left pump when they needed the right. The factory catalog gives you the exact match. Access the Factory Manual from AutoRepairManuals and get the job done right the first time.