Description

Fiat-hitachi EX270, EX270LC Parts Catalog

I have lost count of how many jobs got held up because someone ordered the wrong seal or forgot to check the service code column. This Fiat-hitachi EX270, EX270LC Parts Catalog stops that nonsense cold. 178 pages of exploded views, exact part numbers, and interchange notes that tell you when a part is superseded or restricted. No guessing. No reprints. Just the same binder the Hitachi dealer techs pull from.

If you are tearing down an EX270 pump or swapping a cylinder on an EX270LC, you need the factory breakdown. Aftermarket parts catalogs skip the service codes – the little letters that tell you if a component requires local machining or if it ships only in a kit. Miss those and you are burning billable hours waiting for the right box.

What This Catalog Covers

Opens with a Japanese foreword and an English translation on page 5. Then straight into the meat: PUMP, MOTOR;OIL, VALVE, CYLINDER, and a PARTS INDEX. Each section gives you the assembly drawing, the reference number, the part number, the name, and the quantity per set. For example, the VALVE section lists every spool, spring, and plug with the correct O-ring size. You do not guess – you look up the Automotive Industry Overview to understand the standard but here you get Fiat-hitachi specific.

Valve Assemblies and Cylinder Groups

Two of the trickiest areas on these excavators. The VALVE chapter shows the main control valve stack with every port and bolt. The CYLINDER chapter gives you the boom, arm, and bucket cylinder parts including rod seals and bushings. Page 3 of the foreword explains that the catalog uses dots (・) to indicate sub-assemblies – a single dot means a component of the main assembly, double dot means a component of that sub-assembly. Follow that hierarchy and you will not order the wrong gland.

How to Read the Japanese-English Layout

Page numbers jump between Japanese and English text, but the part number index at the end is universal. The service code column uses symbols: W means local machining needed, D means non-serviceable as a single part – replace the whole assembly. K means the part is in a service kit. R for shims that vary per machine. S for service-only parts. OP for optional. OS/US for oversized and undersized. Ignore those codes and you might order a standard piston when your machine needs an oversize. That mistake costs you a cylinder.

Why You Need an OEM Parts Catalog

Third-party part lists often skip the interchangeability notes. This catalog has a full 互換性 (compatibility) table on page 4. It uses I, P, T, Y codes. I means the part can be replaced by the alternate listed – but the alternate cannot be replaced backwards. P means the original part is prohibited – use only the alternate. T means the part must be replaced as a set with several alternate parts. Y means full interchangeability. Without these codes you might bolt in a spool that looks the same but kills your flow control.

178 Pages of Factory Specs

Every page is scanned from the original Hitachi publication. You get the exact part numbers – no cross-reference tables to decode. The PDF is searchable, so type in a number and you are done. Need a pump seal? Look under PUMP. Need a motor cartridge? See MOTOR;OIL. The index at the back lists every part in numeric order with page reference. That is how you avoid dead time.

Who Should Buy This Manual

Owners of EX270 or EX270LC excavators – if you turn your own wrenches, this saves the phone call to the dealer every time you snap a bolt. Machine shops rebuilding pumps and cylinders will use the exploded views daily. Fleet managers need one copy per service truck. Even beginners can follow the part number logic – but you have to read the foreword to understand the dots and codes. I tell my junior techs: learn the service codes first, then touch the machine.

Remember the HITACHI EX270 EX270LC Parts Catalog is specific to serial numbers 05001 and up, as noted on the cover. For earlier machines, check the Fiat-hitachi 850-3, 850LC-3, 870H-3, 870LCH-3 Parts Catalog – different hydraulic architecture. If you need something smaller, the Fiat-hitachi ZX50U-2 Parts Catalog – 120 Pages of OEM Specs covers compact excavators. And if you want to know why OEM documentation matters, read the Automotive Industry Overview – but this catalog is heavier than any textbook.

Can I use this catalog for repair procedures?

No. This is a parts catalog only. It shows exploded views and part numbers but no step-by-step disassembly sequence. You need a service manual for that.

Does the catalog include the engine parts?

Engine internal parts are not here. The catalog covers only the hydraulic components: pump, motor, valve, and cylinder groups. The engine section would be in a separate engine manual.

What if my machine has a different serial number prefix?

Check the cover – this catalog applies to serial number 05001 and up. Earlier machines may have different part numbers, especially in the valve and cylinder sections. Look for a supplement or earlier edition.

How do I order parts using this catalog?

Find the part number from the exploded view, note the quantity, check the service code for any restrictions (W, D, K, R, S, OP, OS, US), then confirm compatibility using the interchange column (I, P, T, Y). Then call your dealer with the machine model, serial number, part number, and quantity. Do not skip the compatibility codes – I have seen guys order a spool that was prohibited and then wonder why it leaked.

You need the right part the first time. Access the Factory Manual and keep it on your tablet or printed out next to the workbench. Every time you open it you save at least one trip to the parts counter.