Description

Kato KR25H-12, SR-250SP, KR25H-V2 Parts Catalog – 558 Page Factory Document

If you are tearing down a Kato KR25H-12, SR-250SP, KR25H-V2 Parts Catalog to find a replacement hydraulic seal or a boom pin, you already know the pain of chasing a part number through a fog of aftermarket drawings. I have been there – twenty minutes on the phone with a supplier reading off a scribbled number that turns out to be for a different revision. That stops here. This is the factory Parts Catalog from Kato Works Co., Ltd., covering the KR25H-12, SR-250SP, and KR25H-V2 rough terrain cranes. It runs 558 pages and it gives you the assembly number and the index number for every nut, bolt, and bushing on these machines.

You do not need to guess whether a part supersedes. The manual is split into distinct indexing systems – you will see sections like 666, 1555, 888, 666677, and 6756757. Each of those sequences corresponds to a specific assembly group. The front half of the book holds a parts index for maintenance parts (the stuff you actually replace), and the back half covers machine component parts. The index tells you the assembly number where the part lives. Work backward from the part number to the assembly drawing. That is the workflow.

558 Pages of Factory-Sourced Data

This document is not a reprint of a reprint. It is a direct scan of the OEM Kato parts catalog. Every page number you see – 666-1 through 666-58, 1555-1 through 1555-117, 888-1 through 888-99, and the rest – is exactly how Kato laid it out. When you call a dealer and say “I need the shim pack under assembly number 1555-202”, they will know what you are talking about because you are using their language. That saves a return trip and a week of waiting.

Index Number 666: Understanding the Parts Index System

Flip to the section that starts with 666-1. That is the parts index for the main machine components. It lists every part number in the catalog and cross-references it to an assembly number. If you have a part number but do not know where it goes, this index is your map. The OCR snippet shows a note: “With the parts index for maintenance parts which is printed in the front half of this parts list, use the component part number to look up the assembly number of the maintenance part.” That is the procedure. Follow it.

Assembly Number 1555 – Locating the Correct Component

The 1555 series is a major assembly group – likely the boom or the superstructure. You will find pages like 1555-100 through 1555-117, each with a blow-up drawing and a table of part numbers. The assembly number printed in the lower-left corner of each page matches the index. When you source a replacement part, always verify the assembly number against the index before ordering. I have seen guys order a boom cylinder seal for a KR25H-V2 that belonged to an SR-250SP because they skipped this step. Don’t be that guy.

Parts Index: Two Types, Two Uses

The catalog draws a clear line between maintenance parts and machine component parts. Maintenance parts – filters, seals, belts – get their own index in the front half. Machine component parts – gears, castings, structural brackets – live in the back half. Both indexes work the same way: you look up the part number, get an assembly number, then go to that page. But the maintenance index is smaller and faster for the stuff that wears out. Know which index you are in before you start flipping. That will save you twenty minutes.

Why OEM Parts Catalog Beats Aftermarket Drawings

Every aftermarket parts list I have seen for these Kato cranes has at least one dimension wrong or a discontinued part number that still shows up. Kato’s factory document does not have that problem because it was printed from the same database the factory used to build the machine. If you want to cross-reference with other Kato models, check out the Kato HD512III Parts Catalog – 321 Pages of Factory Specs or the Kato HD820III Parts Catalog – 339 Page OEM Factory Document. For the larger machines, the Kato HD2045 Parts Catalog – 259 Pages of Factory Parts Breakdown follows the same indexing layout. All of them were built by Automotive Industry Overview standards for heavy equipment – not automotive, but the same level of engineering rigor.

The full Automotive Industry Overview lesson is that a parts catalog is only as good as the index system. This one has a well-documented two-tier index. You can navigate it blind after ten minutes of reading the front matter. I have done it.

What If You Need Service Specs, Not Parts?

Does this catalog include torque specifications and repair procedures?

No. This is a parts catalog, not a service manual. You need the separate service manual for torque specs, hydraulic pressures, and disassembly steps.

How do I find a part number if I only have the assembly drawing?

Each assembly page has a numbered callout that matches a line in the parts table on the same page. The table gives you the Kato part number and quantity. If you have the assembly number (like 1555-34), go directly to that page. If you only have the part number, go to the index in the front or back half of the book – the index will give you the assembly number. Then turn to that page to see the drawing and the order quantity. Always double-check the revision letter if one is listed. Kato sometimes updates a part without changing the number; the revision letter catches that.

You can stop wasting time with misordered parts and vague aftermarket listings. Access the Factory Manual now and get the correct Kato part numbers on your first call.