Description

Aichi RZ-150, IRZ500 Parts Catalog – Factory OEM Document

If you’re maintaining an Aichi RZ-150 or IRZ500 on a jobsite, you know the pain of ordering a part that doesn’t fit. Aftermarket lists are a gamble. This is the real deal: the factory Parts Catalog straight from Aichi. 169 pages of exploded diagrams and genuine part numbers. No guesswork, no cross-referencing third-party databases. That means you order the right piece the first time.

Each assembly is broken down with a LEVEL column telling you if the item is a major assembly, sub-assembly, or individual component. The quantity column lists the number used per machine. Symbols like A (supplied as assembly), N (semi-finished), or R (reworked) are printed right in the parts list. You don’t interpret cryptic codes — you read Aichi’s own notation. This catalog covers the RZ-150 and IRZ500 models with specification codes A2 and E1.

Aichi RZ-150, IRZ500 Parts Catalog – 169 Pages of Factory Data

This isn’t a reprint or a scan stuck together. It’s the original Aichi document, bookmarked by major sections: ENGINE & MOUNTING, FUEL TANK, PUMP & DRIVE, hydraulic cylinders, turn table, boom, and more. Every part number ties back to an illustration. You get eight illustration indexes at the front that act like a visual map. Flip to the index, find the drawing number, then go to that page. The 169 pages are organized so you can zero in on the assembly you need without flipping through random diagrams.

Engine & Mounting: The Core Assembly Lists

The ENGINE & MOUNTING section has three separate lists. Each list covers a different level of the engine assembly — from the complete engine to the mounting brackets and isolators. If you need a specific bolt or gasket for the engine block, you find it here. Aichi lists every fastener with its own part number. No generic “bolt, hex” nonsense. You get the exact Aichi p/n. The Engine section alone takes up multiple pages, and each component is tagged with the serial number range it fits. That prevents ordering a part for an older series that won’t bolt up.

Fuel Tank and Pump & Drive – Critical Fluid Systems

Under the FUEL TANK list, you get the tank itself, sending unit, filler neck, and all related lines. The PUMP & DRIVE list covers the hydraulic pump and its drive coupling. These sections are essential when you’re chasing a leak or a no-start. With this catalog, you can match the exact fuel line or pump housing part number without removing the old one. The illustrations show the routing and orientation, which cuts down on installation errors. The Fuel system components are broken down into individual pieces, so you don’t have to buy a whole assembly when only one seal needs replacing.

8 Illustration Indexes to Navigate 169 Pages

Aichi includes ILLUSTRATIONS INDEX 1 through 8. Each index groups related assemblies — one for the turn table and boom, another for hydraulic valves, another for cylinders. You find the illustration number, then jump to the page where that drawing appears. The index also lists the figure number and the part number range, so you can verify you’re looking at the correct image. This is far faster than scrolling through a PDF without an index. Bookmarked PDF version keeps the navigation intact.

How Does the Foreword Explain Part Symbols?

Page 2 of the catalog prints the entire FOREWORD. It explains the LEVEL system: “1” for assembly, “2” for component belonging to assembly, “3” for parts. Quantity is per machine, but component parts quantity is per assembly. Symbols like A (supplied as assembly), N (semi-finished), R (reworked part), C (substitute part), K (service kit part), S (selective — multiple manufacturers), H (miscellaneous like seals). If you see “A” next to a part number, Aichi will ship the whole assembly automatically unless you specify otherwise. That’s critical information when ordering — you don’t want an assembly when you only need a seal.

Why OEM Documentation Matters

Aftermarket parts catalogs often miss revisions. Aichi updates parts over a machine’s life. This catalog includes the serial number ranges for each part. You look at the serial plate on your RZ-150 or IRZ500, find the last four digits, and match against the “Serial No.” column. That’s how you avoid getting a part that was superseded. The automotive industry relies on OEM documentation for accuracy (Automotive Industry Overview). This catalog is no exception. Understanding the history of equipment manufacturing helps (Automotive Industry Overview).

Related factory parts lists:

• Aichi SR18AJ SR21AJ SR18A SR21A Parts Catalog – 300pp OEM
• Aichi SR12B SR12BJ ISR40B ISR40BJ Parts Catalog – OEM Factory List
• Aichi SR12B, SR12BJ, ISR40B, ISR40BJ Parts Catalog – Factory OEM

Does this catalog include torque specifications?

No. This is a parts catalog, not a service manual. Torque specs are in the factory service manual.

How are replacement part numbers organized in the catalog?

Part numbers are grouped by assembly sections (Engine, Fuel Tank, Boom, Turn Table, etc.). Each page shows an exploded illustration with reference numbers pointing to the parts list table. The table includes part number, description, quantity, serial number range, and a LEVEL column indicating whether the item is an assembly (1), sub-component (2), or part (3). The FOREWORD explains symbols such as A (assembly), N (semi-finished), R (reworked), C (substitute), K (service kit), S (selective), and H (miscellaneous). The eight illustration indexes let you locate the drawing by name or number, then flip to the correct page. This structure ensures you always order the correct part for your machine’s serial number.

Stop guessing which part you need. Access the Factory Manual and get the exact part numbers from Aichi’s own engineers.