Description

Furukawa Unic URV500 Parts Catalog – 471 Pages of OEM Spec Data

If you’ve ever tried to order a replacement sheave or a specific hydraulic fitting for a Unic URV500 crane without the factory parts book, you know exactly how that ends. Wrong part shows up. Crane sits. Customer calls. I’ve seen techs order a “boom assy” without checking the serial number and get a sub-assembly that doesn’t fit the column. That’s a $300 mistake on a good day. This Furukawa Unic URV500 Parts Catalog is printed from the master file – 471 pages of exploded diagrams, factory part numbers, and assembly codes. You get the same documentation the dealer’s parts counter uses.

Parts Catalog vs Service Manual: Why You Need Both

A service manual tells you how to take something apart and torque it back together. A parts catalog tells you exactly which nut, bushing, or nipple goes back. The URV500 crane has dozens of sub-assemblies – boom, column, hydraulic tank, and the slide sheave groups. Without the catalog, you’re measuring worn bushings and hoping the aftermarket equivalent exists. This manual gives you the OEM part number, the assembly hierarchy (A, A1, A2…), and the exact quantity per assembly. Page 2 of the PDF shows the “how to use” section – it’s the same format Furukawa has used for decades. Follow the index number on the diagram, cross-reference the key number in the list, and you have the part number. No interpretation. No translation errors.

How to Read the URV500 Parts Catalog

Open the PDF. The first few pages explain the legend. You’ll see columns: Index Number, Parts No., Parts Name, Q’ty, Mark, and Crane No. The “Mark” column indicates D for disuse, Q for quantity change, and Δ for parts not sold separately (assembly only). The “Assy” column uses letters – A is a sub-assembly, A1 is a component of that sub-assembly. This is critical: if you order a part marked A, but the actual item is A1, you’ll get the whole sub-assembly. Check the serial number range at the top of each group. The cover page states “Serial No. F500001~” – that’s the starting point for these part numbers. If your crane is older than that, you need a different catalog. Newer cranes with updated serial numbers may have part number changes noted in the “Applicable Serial No.” column. This is where the factory data saves you a return trip.

471 Pages of Exploded Views and Part Numbers

Every page is a scanned original from Furukawa Unic Corporation in Tokyo. You get the boom assembly, the column and rotation system, the hydraulic pump and valve block, and all the wiring harness clips and seals. Over 400 pages of pure part identification. The catalog is bilingual – Japanese and English – but the part numbers and diagrams are universal. I’ve used this exact format for Unic cranes on job sites from San Antonio to the Gulf Coast. It’s the same book the factory ships with the crane. There’s no “comprehensive” marketing spin here – it’s a parts book, and it does exactly what it says: tells you which hexagon socket bolt (7161 06030) goes where. The grease nipple for the slide sheave? 7243 31000. Order it.

Why Does Serial Number Matching Matter?

Furukawa Unic changes part numbers during production runs. A bushing that fit serial F500500 may differ from one on F501000. The catalog lists the applicable serial number for each part. Page 2 of the manual shows the “General Information” section explaining that interchangeability is indicated with a symbol – if the part is interchangeable, order the new number. If not, you must match your crane’s serial number and manufacture date. Skip this step and you’ll be doing the same job twice. I’ve had techs call me saying the new boom cylinder doesn’t line up. Nine times out of ten, they ordered the wrong sub-assembly for their serial range. The catalog prevents that.

Ordering Parts the Right Way

Page 3 of the catalog lists the information you need when placing an order: crane model, assembly name, part number, quantity, serial number, and part name. Write it down before you call the dealer. The manual also warns about using genuine Furukawa parts – “Other parts used cause failure and cannot be guaranteed.” That’s straight from the factory. If you’re a crane owner or a shop that works on these machines, having this catalog on your tablet means you can walk through a rebuild without stopping to look up numbers on a phone. Pair it with the Furukawa UNIC URV Series Work Shop Manual”>Furukawa UNIC URV Series Work Shop Manual and you have the full coverage – service procedures and part numbers.

OEM vs Aftermarket Parts Identification

Aftermarket parts catalogs are a gamble. They often use generic drawings and guess at the part number. This PDF is scanned from the original Japanese print, likely from a dealer’s official binder. You get the actual Furukawa part numbers, with the Furukawa logo and part number stamps. The OCR excerpt I read clearly shows the boon assembly list with hex bolt sizes, slide sheave kits, and bushing part numbers. If you’re working on a URV500 crane, this is the same documentation the factory service engineers use. No aftermarket summary. No simplified reprints. This is the parts catalog, plain and direct.

For related machines, check the Furukawa Unic URW295C1UR Parts Catalog – 256-Page Factory Spec”>Furukawa Unic URW295C1UR Parts Catalog – 256-Page Factory Spec or the FURUKAWA UNIC URW370C2UR Parts Catalog”>FURUKAWA UNIC URW370C2UR Parts Catalog if you’re working on a different series. The same OEM methodology applies.

Understanding how cranes fit into the broader Automotive Industry Overview helps when you’re dealing with hydraulic systems that share components with off-highway trucks. But for this machine, the Automotive Industry Overview”>Automotive Industry Overview isn’t your manual – this PDF is.

Q: Can I use this catalog to rebuild the boom assembly from scratch?

Yes, if you have the service manual for the disassembly and torque specs. This catalog gives you every part number, quantity, and assembly hierarchy. You’ll see the boom assy (part 0145-2400) listed with its sub-components. Pair it with a genuine repair manual for the step-by-step work.

Q: Is the manual fully in English?

It is bilingual – Japanese and English side by side. All part numbers, quantities, and column headers are in both languages. The instructions for use are in Japanese and English on pages 2-3. The diagrams have English labels.

This catalog eliminates the phone call to the dealer for a part number you could have looked up in thirty seconds. Access the Factory Manual and keep it in your digital library. It’s 471 pages of data you can trust because it came from Furukawa Unic, not a third-party compiler. No wasted trips to the parts counter. No guessing which bushing fits the 200 slide sheave. The exploded views don’t lie.