Description

Fiat-hitachi EX100-3 Parts Catalog – 133 Pages of OEM Specs

Nothing grinds my gears faster than a parts order that shows up wrong because some clown guessed the part number. You waste a half-day, the machine sits, and the customer stares at you like you’re the problem. That’s why I keep an OEM Fiat-hitachi EX100-3 Parts Catalog on the shelf. 133 pages of factory-issued part numbers, service codes, and compatibility tables – no aftermarket fluff. If you’re working on an EX100-3 excavator and need to identify a **Valve** assembly or a **Cylinder** seal kit, this is the document that keeps you from ordering blind.

EX100-3 Parts Breakdown: Pump, Motor, Valve, Cylinder

The catalog is laid out by major systems: PUMP, MOTOR ; OIL, VALVE, CYLINDER, ETC., then a PARTS INDEX at the back. Each section has exploded-view drawings with callouts. You see exactly which O-ring goes where and which bolt kit matches your machine’s serial number. The manual covers everything from the main hydraulic pump to the swivel joint and track motors. If you need a part number for the control valve spool or the cylinder piston, it’s right there – no cross-referencing three different websites.

What the Service Codes Tell You (Don’t Skip This)

Page 4 of the manual explains the service codes. W means field modification needed – call the dealer. D means you cannot replace that part as a single unit; you have to buy the assembly. K means it’s in a service kit. R means the quantity varies per machine (shims, for example). S means service-only part, not factory-installed. OP is optional. OS and US are oversize and undersize. I’ve seen guys ignore the D code and try to press out a bushing that’s only sold as part of the housing – then they’re stuck. Read the codes. Automotive Industry Overview won’t help you here; only the factory markings will.

Why OEM Beats Aftermarket Every Time

Aftermarket parts catalogs often reprint old images with wrong part numbers. Not this one. This is a direct scan of the HITACHI パーツカタログ for the EX100-3, serial number range PI2S-EI-3 (35001 and up). The compatibility symbols – I, P, T, Y – tell you exactly which old part number supersedes to a new one. I’ve caught two different aftermarket PDFs listing the wrong hydraulic filter number. With this, I match the factory part number from the page and order without guessing. Related manuals: HITACHI EX100-3 Parts Catalog and Fiat-hitachi 850-3, 850LC-3, 870H-3, 870LCH-3 Parts Catalog follow the same format. If you need a compact excavator manual, check Fiat-hitachi ZX50U-2 Parts Catalog – 120 Pages of OEM Specs.

3 Reasons to Trust This Parts Catalog

First, it’s 133 pages – not a condensed aftermarket summary missing half the hydraulic system. Second, the foreword and contents are bilingual Japanese/English, so the part numbers match the dealer’s system. Third, the manual includes the application machine number column, so you only order parts that fit your specific EX100-3 serial number. I’ve had too many calls from guys who bought a “universal” parts book and ended up with wrong seals. This catalog eliminates that.

Ordering Parts: What the Manual Tells You

Page 4 (the FOREWORD) includes a section titled “部品のご注文について” – Ordering Parts. You need the machine model, serial number, part number, part name, quantity, and delivery address. That’s it. No extra phone tag. The manual also explains how to read the illustration symbols (符番, 部品番号, 部品名, 数量). Every line item shows the quantity per set. If a part has a dot before its name, it’s a sub-component of the assembly above. Double dots mean a sub-sub component. This hierarchy saves you from buying a whole pump when you only need a seal kit. Also note the “#” symbol – it marks newly added parts since the previous revision.

FAQ

Does this catalog include engine parts?

The engine type and engine serial number are listed on page 2, but the parts breakdown focuses on the hydraulic equipment – pump, motor, valve, cylinder. For engine internal parts, you need a separate engine service manual.

Will this work for EX100-2 or EX100-5?

No. This is specific to EX100-3 with serial numbers starting 35001. Different models have different valve assemblies and cylinder bore sizes.

Are the illustrations clear in the PDF scan?

Yes. The original is a clean scan; each exploded view has part callouts that match the table. I’ve printed pages for the shop and the numbers are legible. Some pages are blank (page 3) – that’s normal.

How do I use the compatibility symbols (I, P, T, Y)?

I means the listed part can be replaced by the alternative part number (one-way). P means the original part is prohibited – use the alternative only. T means you need a combination of parts to replace the old one. Y means full interchangeability both ways. Read page 4 carefully. If you order without checking, you might get the wrong part. I always verify with the dealer after looking up the symbol.

Access the Factory Manual and put an end to parts guessing. I’ve got one in the shop binder, and every time a junior tech reaches for it, I know the order will be right. 133 pages of OEM data – pump, motor, valve, cylinder – all with factory part numbers and service codes. Stop wasting time on aftermarket catalogs that guess. Get the real thing.