Description

Fiat-hitachi EX120 Parts Catalog – Stop Ordering the Wrong Part

Alright, listen up. You’re trying to order parts for an EX120, and you’re tired of getting the wrong stuff because some third-party website listed a part that doesn’t fit. I’ve been there. That’s why you need the genuine article: the Fiat-hitachi EX120 Parts Catalog. Not some scanned reprint from a dodgy source. This is the original factory document, 336 pages, straight from Hitachi’s engineering department. If you’ve ever rebuilt a swing device only to find the seal kit doesn’t match, you know the pain. This catalog kills that pain cold.

Engine Section: Finding the Right Part Number

Under the SUPERSTRUCTURE section, you’ll find ENGINE listed with its own exploded diagrams. Every bolt, gasket, and bracket gets a unique part number. Need the injector nozzle? Look up the engine section. The manual also references the separate Isuzu 4BD1T engine parts list, so cross-referencing is built in. No more calling the dealer and reading a serial number off a blurry photo. Page 5 has the foreword explaining how to read the service codes – pay attention to those “H” and “D” codes. They tell you if a part is precision-only or must be replaced as an assembly.

Fuel Tank and Fuel System Parts – Exploded Views

FUEL TANK is another subsection under SUPERSTRUCTURE. The diagram shows the tank, cap, strainer, and all sending unit components. You get the exact part numbers for the pickup tube and the rubber grommets that always dry-rot. I’ve seen guys order a whole tank assembly because they couldn’t find a $3 gasket. This catalog saves that. The same goes for the FUEL lines – they’re part of the MAIN PIPIPNGS sections. Yes, “PIPIPNGS” is a typo in the original TOC, but the part numbers are correct. Trust the factory printing, not the table of contents spelling.

Track and Undercarriage Components – Real Fitment Data

The TRACK section covers TRACK FRAME, TRAVEL DEVICE, FRONT IDLER, ADJUSTER, UPPER and LOWER ROLLERS, and the TRACK-LINK 500G. Need a new chain? The catalog lists the link assembly with pitch and bushing diameter. You can order exactly the 500G link or switch to optional 600G, 700G, 510F, or 700A links – all listed with their own part numbers. The ADJUSTER assembly includes the grease cylinder and seals. Don’t forget to check the compatibility code “I” or “Y” in the interchangability column – that tells you if a superseded part can be used without modifications.

Front Attachment: Boom, Arm, and Bucket – Optional Configurations

FRONT ATTACHMENT includes BOOM, STD. ARM 2.5M, BUCKET 0.45, and FRONT PIPINGS. But the catalog also lists optional arms: LONG ARM 3.0M and SHORT ARM 2.1M, plus a dozen bucket sizes from 0.17 to 0.55 cubic meters. Each bucket has its own page with tooth types and edge protectors. There’s even a ONE-POINT RIPPER and SLOPE-FINISHING BLADE. If you’re converting a standard machine to a breaker setup, the OPTIONAL PARTS section has BREAKER PIPINGS (1)-(3) for the H-7X configuration. You need the exact piping kit – this catalog shows which O-rings and fittings go where.

How to Use the Parts Index – 336 Pages of Data

Flip to the back of the manual. The PARTS INDEX is a numerical list of every part number used in the entire catalog. Page 336 (the last page) contains the final entries. If you have a part number from the old assembly, you can look it up in the index and find which diagram page it lives on. The index also shows supersession numbers. I’ve used this to cross-reference parts from a 1990 EX120 onto a 1995 model – the “P” interchangeability code saved me from buying a discontinued part. This is why OEM documentation beats aftermarket every time.

FAQ

Can I use this parts catalog to rebuild the engine?

No. This lists parts, not repair procedures. You need the factory service manual for torque specs and assembly steps.

How do I find the correct part number for the hydraulic pump?

Go to the SUPERSTRUCTURE section and look under PUMP DEVICE or depending on your machine. The diagram shows the pump assembly with all sub-components. Each item has a code number from the illustration. Write that number down, then find the corresponding part number in the table next to it. Check the service code column – if it shows “H”, the pump is a precision part and should not be disassembled. If you need a replacement pump, the catalog gives the assembly part number. For serial number breaks, the APPLICABLE MACHINE column will tell you if your machine (based on the serial number after the hyphen) uses a different version. Cross-reference with the PARTS INDEX at the back for any supersessions.

Related manuals you may need on the same machine:

• HITACHI EX120 Parts Catalog”>HITACHI EX120 Parts Catalog
• Fiat-hitachi 850-3, 850LC-3, 870H-3, 870LCH-3 Parts Catalog”>Fiat-hitachi 850-3, 850LC-3, 870H-3, 870LCH-3 Parts Catalog
• Fiat-hitachi ZX50U-2 Parts Catalog – 120 Pages of OEM Specs”>Fiat-hitachi ZX50U-2 Parts Catalog – 120 Pages of OEM Specs

For a broader look at how OEM documentation supports equipment uptime, check out this overview of the Automotive Industry Overview.

Bottom line: if you own or work on an EX120, you need this catalog on your bench. Every part number is from the factory. No guessing, no returns because you ordered the wrong seal. Access the Factory Manual from AutoRepairManuals and start ordering parts with the same data the dealer uses.