Description

Furukawa Unic URW370C2UR Parts Catalog

If you’re working on a Furukawa Unic URW370C2UR hydraulic crawler crane and you’ve ever ordered the wrong part because the parts book you used didn’t match your serial number, you know the frustration. This isn’t a generic aftermarket reprint. This is the original OEM parts catalog from Furukawa Unic Corporation, printed in Japan. It covers cranes from serial number 37W0223 onward. You get the exact part numbers, assembly groupings, and the marking system that tells you whether a part is discontinued, not sold separately, or had a quantity change. No guessing.

Parts Ordering for the URW370C2UR: What You Need to Know

Every time you order a part, the catalog expects you to supply the crane model, serial number, assembly name, part name, part number, and quantity. That’s six pieces of data. Miss one and your dealer will kick the order back. The catalog’s own instructions on page 4 show exactly what to provide. It also tells you how to handle interchangeable parts: if the mark column shows a circle, order the new part; if it shows an X, you need to verify your crane’s serial number and manufacture date before ordering. This is the kind of detail that keeps a machine in the field instead of waiting on the wrong clutch plate.

How the Parts Catalog Is Organized – 292 Pages of Assembly Breakdowns

Each major assembly group (slewing, track frame, boom, hydraulic system, etc.) is broken down into sub-assemblies and component parts. The page numbers are grouped by assembly, not by system. You won’t find a table of contents in this PDF because Furukawa Unic uses a serial-number-based index at the front. Every illustration has numbered callouts that match the key numbers in the parts list. The list includes the Assy column with letters A, B, C… for sub-assemblies and A1, A2 for component parts. That hierarchy saves you from buying a whole pump assembly when you only need a seal kit.

Markings Explained: △, D, Q

Three symbols you need to memorize. The triangle (△) means the part is not sold separately – you buy the higher assembly. The D means the part is discontinued – find an alternative or source used. The Q means the quantity per assembly has changed from the original print. These markings are right there in the Mark column on every page. Ignore them and you’ll order a part that can’t be shipped or you’ll get half the quantity you need. This catalog uses those marks consistently, unlike third-party reprints that sometimes drop them.

Interchangeable Parts and Serial Number Matching

Production changes happen. The catalog identifies which parts interchange across the 37W0223 serial number range and which don’t. If the mark is a circle, the new part supersedes the old one and you order the new number. If the mark is an X, you need to match your crane’s serial number and build date to the applicable serial number listed in the table. That’s why you always store your crane’s spec plate info before you open this catalog. The note on page 5 even warns that part numbers can change without notice due to improvements. So if you’re ordering for a later serial number, check the “applicable serial number” column every time.

Why OEM Parts Matter for Hydraulic Crawler Cranes

Aftermarket parts catalogs often consolidate multiple models into one book, which means you get a generic exploded view that may not match your actual crane. That’s dangerous when you’re dealing with hydraulic components under load. This Furukawa Unic OEM catalog is model-specific – URW370C2UR only. It uses genuine part numbers that tie back to the factory’s supply chain. Using non-genuine parts voids the warranty for any failure caused by that part, per the catalog’s own warning. When you’re lifting loads with a crawler crane, you don’t take shortcuts on sourcing.

Audience Fit: Who Needs This Catalog

If you own or service a Furukawa Unic URW370C2UR crane with a serial number at or above 37W0223, this is your parts bible. It’s also useful for shops that take in these cranes from rental fleets and need to identify unlabeled components. Beginners in crane repair should pair this catalog with the service manual, because the parts catalog only covers identification and ordering – it doesn’t include torque specs or removal procedures. For that, you want Furukawa Unic URW295C1UR Parts Catalog – 256-Page Factory Spec and the corresponding service manual. Related models like the Furukawa Unic URV500 Parts Catalog – OEM Spec, 471 Pages share some undercarriage parts, so cross-reference if you’re working on a family of machines. For older variants, the FURUKAWA UNIC URV370 Series Parts Catalog covers similar platform components.

Source Validity: Official Furukawa Unic Document

This PDF is a direct scan of the original Japanese/English bilingual print from Furukawa Unic Corporation. The file name itself – FURUKAWAUNIC_URW370C2UR_Parts_Catalog_en-85814020048.pdf – confirms it’s the English export version. You’re not getting a third-party reproduction that dropped the Mark column or rearranged the page order. Every assembly illustration matches the printed book. The serial number range is stamped on the spec plate, and the catalog’s intro page tells you exactly where to find it. If you understand the Automotive Industry Overview practices for heavy equipment documentation, you know that factory-sourced parts catalogs are the only reliable reference for long-term maintenance. The Automotive Industry Overview also explains why genuine parts traceability matters for liability and resale value.

Can I use this catalog to look up service procedures like valve adjustments or track tension?

No. This is a parts catalog only. It shows exploded views, part numbers, and quantities. For repair steps, get the factory service manual.

How do I confirm that my crane falls within the serial number range covered by this catalog?

Look at the specification plate on the column of your crane. The serial number is engraved there. If it’s 37W0223 or higher, this catalog applies. If you have an earlier machine, you need the prior edition. Furukawa Unic splits catalogs at serial number breaks because production changes alter part numbers. Ordering from the wrong range guarantees wrong parts. The catalog’s intro page specifically says the application is “Cranes from serial number URW370C2UR No. 37W0223~.” That tilde means “and above.” If your serial number starts with 37W plus a lower four-digit number (e.g., 37W0219), you fall outside the range. Contact Furukawa Unic dealer support for the correct older catalog. Also note that some parts may have been superseded; the Mark column will indicate interchangeability with a circle or X, but the base catalog coverage is locked to that serial number break. Keep a photocopy of your spec plate inside the front cover of this manual so you never guess.

Stop ordering wrong parts. Access the Factory Manual now and get the exact OEM part numbers for your URW370C2UR crane.