Description

Hitachi Sumitomo ZW310 Parts Catalog — 412 Pages of OEM Part Numbers You Can Trust

If you work on a ZW310 wheel loader for more than a week, you learn one thing fast: aftermarket parts lists will send you down the wrong rabbit hole every time. I do not care if the online cross-reference says “fits ZW310” — without the factory parts catalog in front of you, you are ordering blind. This Hitachi Sumitomo ZW310 Parts Catalog is the same document the dealership parts counter uses. It runs 412 pages and covers everything from the engine through the electrical system. You get exploded-view diagrams, genuine Hitachi Sumitomo part numbers, and serial-number breakpoints that tell you exactly which parts go on which machine. Automotive Industry Overview

Engine, Cooling, Fuel, Electrical — Covered by Serial Number

Look at the table of contents. You see ENGINE, COOLING SYSTEM, FUEL SYSTEM, ELECTRICAL — each one broken down by sub-assembly and serial-number range. For example, the Fuel System section has three sub-sections (FUEL SYSTEM 1, 2, 3) plus a separate BREATHER section for Italy homologation machines starting at 4HF:000101. The Electrical section runs eleven sub-sections covering front, rear (five parts), cockpit, TM, lift-arm kick-out, auto-leveler, battery, main controller, reverse alarm, lamps, 12V power unit, and GPS. Page references exist for each; you will find the exact part number for a rear combination lamp on the page marked 4HA:005101. No guessing required.

412 Pages of OEM Documentation — Not a Third-Party Reprint

This file is the original factory scan from Hitachi Sumitomo. You see the memorandum pages, the Japanese and English foreword, the parts list with symbols for service codes (W, H, D, K, R, S, Z, OP, OS, US, Y, I, T, P). The manual tells you exactly how to read the interchangeability column. When you order a part marked with “Y”, the replacement is fully interchangeable. When you see “P”, that part is prohibited — the substitute part number is in the next column. Aftermarket catalogs never include this level of detail. HITACHI ZW310 Wheel Loader Technical Manual has the repair specs, but this parts catalog is what you need when the part number on the old component is worn off.

Who Needs This Parts Catalog?

Owners of a ZW310 wheel loader who want to stop cross-referencing from worn-out tags. Shop mechanics who need to verify part numbers before ordering from Hitachi Sumitomo dealers. Insurance adjusters who need serial-number-specific part identification. If you are a home-garage DIY guy who has never touched a loader this size, you still need this manual — it shows you how the machine is assembled and what each component costs. You can pull up the COVER section and see exactly which gas spring fits your rear fender setup. That saves you a four-hour trip to the dealer. The manual also covers the FRONT AXLE (TPD and LSD), REAR AXLE, PROPELLER SHAFT, TRANSMISSION, TORQUE CONVERTER, STEERING COLUMN, TIRE (with serial-number variants), POWER STEERING steering cylinder and orbit roll, BRAKE piping and valves, FRAME, COUNTER WEIGHT (1.8t and 2.5t), CAB, SEAT variants, COCKPIT, MAIN PUMP, VALVES (2PL and 3PL), PILOT PIPING, OIL TANK, MAIN PIPING, GREASE PIPING, TORQUE CONVERTER PIPING, LIFT ARM CYLINDER, BUCKET CYLINDER, and LIFT ARM (standard and high lift). HITACHI ZW310 Technical Manual gives you the rebuild specs, but the parts catalog gives you the raw numbers.

Source Validity: Hitachi Sumitomo Factory Document

This is the OEM file. The first page has the Hitachi logo and the product identification number ranges — 4HF:000101 and 4HA:005101. The engine type is listed as Daimler Chrysler OM460LA. Every page in the PDF carries the original scan with part numbers, quantities, and application codes. There is no aftermarket transcription or re-keyed data. If you have ever been burned by a generic parts list that lists the wrong bolt thread or the wrong seal diameter, you understand the value of an original OEM scan. HITACHI ZW310 ZW310-A Wheel Loader Parts Catalog is the same document but for the -A series; make sure you have the right serial range. For this catalog, serial numbers start at 4HF:000101 and 4HA:005101. Do not use it for older machines without checking the identification plate.

What is the difference between this parts catalog and a service manual?

A service manual tells you how to take it apart and what torque to use. This parts catalog tells you which part number to order once it is apart. You need both. This one will not give you tolerances or repair procedures.

Does the catalog cover the electrical system including the main controller and GPS?

Yes. The ELECTRICAL section covers front and rear electrical systems, cockpit right console, lift-arm kick-out and auto-leveler, battery (standard and large capacity), main controller (two serial-number variants for JPN and OTHER), reverse warning alarm (three dB ratings), front and rear lamps, 12V power unit, and GPS. If you have a wiring issue, you need the technical manual for the schematic, but for the physical components and their part numbers, use this catalog. Page numbers are given for each sub-section. The main controller page, for example, starts at serial 4HF:000101 and also 4HA:005101 with separate listings for JPN and OTHER markets.

You can order a fan pump, a breather, a steering accumulator, a counterweight, a seat headrest with or without the Hitachi logo — every variant is here. The manual even includes a memorandum page for you to write your machine’s PIN. Automotive Industry Overview

Access the Factory Manual and put it on the tablet mount in your shop. Next time a ZW310 rolls in and the customer says “I need the fuel system part number for the Italy-homologation breather”, you can find it in thirty seconds. That is what 412 pages of OEM data buys you.