Description

Furukawa Unic UR345-C1 Parts Catalog – 90 Pages of Factory Part Numbers

If you’re trying to rebuild a Furukawa Unic UR345-C1 hydraulic crane without the factory parts catalog, you’re wasting time and money. I’ve seen guys order the wrong seal kit for an extension cylinder and then sit on their hands for three days waiting for the correct one. That’s lost billable hours. This catalog gives you the exact part numbers, exploded views, and ordering instructions from the same people who built the machine. 90 pages. No aftermarket guesswork.

5-Section Boom Ass’y – What the TOC Shows

Section 1 of this Parts Catalog covers the 5-section BOOM ASS’Y (Fig. 1). You get the boom assembly part number (08 B 21000), every bolt, bushing, sheave, and grease nipple listed with key numbers. The diagram lines match the key numbers on the parts list. If you need to replace the sheave-slide 200φ, you’ll find it listed as part number 9110 00018 on page 2 of the catalog. No flipping back and forth between a generic diagram and a third-party list. It’s all there, in order.

Extension Cylinder (1), (2), (3): Don’t Guess Which One

Sections 2, 3, and 4 cover the three extension cylinder assemblies: EXTENSION CYLINDER (1) ASSY (08 B 15000), (2) ASSY (08 B 17000), and (3) ASSY (08 B 19000). Each has its own parts list with sub-assembly breakdowns. The catalog tells you exactly which cylinder’s part numbers apply based on your crane’s serial number (N111926~). If you order a seal kit for cylinder 2 when you actually need cylinder 3, you’ll know the second you open page 9. That’s the kind of detail that keeps a job moving.

Selector Valve Assembly – Why OEM Matters

Section 5 is the SELECTOR VALVE ASSY (0806 15031). This is a hydraulic control valve that routes fluid to the boom functions. Aftermarket catalogs often combine solenoid bodies or mislabel spool sections. Furukawa Unic’s own catalog lists every component part inside that valve body – including the sub-assembly marks (A, B, C) and interchangeability codes (O, X, Δ). If you see an X in the Mark column, that part isn’t backward-compatible. You need to confirm the crane’s build date. That’s safety-critical when you’re dealing with high-pressure hydraulic circuits.

Safety Device Ass’y and Hydraulic Driving Device

Section 7 covers the SAFETY DEVICE ASS’Y – the overload warning system, limit switches, and associated hardware. Section 8 is the HYDRAULIC DRIVING DEVICE, which includes the pump drive and motors. Both sections are broken down by key number with part numbers and quantities. For example, the piping diagrams for the boom lift cylinder, hoist motor, and swing motor are in sections 9-1 through 9-5. You’ll find the exact hose and fitting part numbers there. Don’t trust a generic cross-reference; use the factory numbers.

How to Order Parts Using this Catalog

Page 3 of the catalog explains exactly how to read the Mark column and order parts. If the part has an O, you can order the new number directly. If it has an X, you need to give the crane serial number and build date. The catalog also warns: “Use UNIC GENUINE PARTS exclusively.” Aftermarket copies ignore that. This catalog ensures you’re ordering the right piece the first time – assuming you read the instructions. If you need related manuals, check out the Furukawa Unic URW295C1UR Parts Catalog – 256-Page Factory Spec”>URW295C1UR, Furukawa Unic URV500 Parts Catalog – OEM Spec, 471 Pages”>URV500, or Furukawa Unic URW370C2UR Parts Catalog – OEM Spec, 292 Pages”>URW370C2UR.

Does this parts catalog include torque specs?

No. This is a parts catalog. Torque specs are found in the service manual.

What does the “Mark” column mean on page 3?

The Mark column tells you interchangeability. O means new and old parts swap directly. X means new part can replace old but not vice versa – you must confirm the crane serial number and build date before ordering. Δ means the part is not for sale (superseded). D means discontinue. Q means quantity changed. Ignore those codes and you might order a part that doesn’t fit your crane’s revision. For a broader look at equipment documentation standards, see the Automotive Industry Overview on Wikipedia.

Every page of this Parts Catalog was printed by Furukawa Unic Corporation in Tokyo. The serial number range is listed on the cover: UR345 No. N111926~. The document includes parts for the boom, cylinders, valve, safety devices, and all hydraulic piping. Aftermarket catalogs skip the sub-assembly codes and interchangeability notes. This one doesn’t. If you’re working on a UR345-C1, stop pulling parts off the shelf blind. Access the Factory Manual and keep it on your tablet or print it out. Your crane – and your wallet – will thank you.