Description

Furukawa Unic 800 SERIES 1996 Operators Manual

If you are running a Unic crane in a yard or on a job site and you haven’t read this book cover to cover, you are gambling with your rig. I have seen more wrecked equipment from guys who thought they knew the machine because they ran a different model. The Furukawa Unic 800 SERIES 1996 Operators Manual is the factory-issued book that tells you exactly what the Japanese engineers intended. No aftermarket summary, no third-party translation errors. This is the 76-page document that came with the crane when it was new, covering UR803, UR804, and UR805 configurations. If you own one of these, you need this paper.

The manual opens with safety rules that are not suggestions. Page 1-1 drills in the basics: keep people clear, inspect wire rope daily, never exceed rated load. Furukawa Unic made these cranes for heavy lifting, and the manual treats every lift like a potential accident if you skip a step. Over the years I have seen guys ignore the boom angle chart — section 4-3 in this book — and then wonder why the crane tipped. The load chart on page 2-19 graphs maximum load against boom angle. That chart is not optional reading.

Load Charts and Boom Angle Data

Section 4-3, “Maximum Load and Boom Angle Chart,” is the spine of safe crane operation. The manual includes separate charts for each 800 SERIES variant: UR803, UR804, UR805. These are not generic values. Each chart gives you the rated capacity in pounds (lb) at specific boom angles in degrees. You need that data before you commit a lift. The specs also list the crane’s own weight and dimensions — page 2-3 through 2-5 — so you can calculate total load vs. machine capacity. Skip this, and you are guessing. Guessing with a hydraulic crane costs bodies.

Operator Station: Controls Identification

Section 4-1 walks through every lever, pedal, and switch in the cab. The manual labels each control and explains its function. For a crane operator who has never sat in an 800 SERIES, this section is worth the price alone. It covers the emergency boom lowering procedure (section 5) and how to road the unit safely (section 4-7). If you are hiring someone to run this machine, make them read these pages first.

Maintenance Schedules You Cannot Ignore

Pages 3-1 through 3-12 lay out the periodic maintenance intervals. Daily checks include hydraulic oil level (page 3-3) and wire rope inspection (page 3-6). Weekly and monthly tasks cover swing bearing lubrication and gear oil level. The annual service section tells you how to change hydraulic oil, replace the return filter, and check swing bearing mounting bolts. Torque values for those mounting bolts are given in the text — no need to hunt elsewhere. The book also lists recommended greases, gear oils, and hydraulic fluids in section “Others” starting at page 4-1. Use the spec listed or risk pump failure.

Why the OEM Manual Beats Aftermarket Copies

I have seen aftermarket manuals that skip the hydraulic circuit diagram on page 4-3, or reprint the load chart in metric-only and call it a day. This factory manual gives you both the original Japanese specs and the field-tested procedures. The copyright page — 1996 Furukawa Unic Corporation — tells you this is the real deal. When you need to identify a control or diagnose an emergency, you want the document the dealer used. Not a scanned copy that lost the page numbers. Not a PDF with missing images. This is the genuine OEM Operators Manual.

Audience Fit: Who Needs This Manual

If you own a Unic 800 SERIES crane — and you can check the model plate on the frame — this book is for you. Operators, fleet managers, rental yard mechanics, and heavy equipment techs will all find what they need. The manual expects you to have basic machine knowledge but explains each control and safety rule thoroughly. Beginners can follow the daily inspection checklist; veterans use it for torque specs and fluid types. Either way, keep a copy in the cab and a backup in the office.

Related manuals you may need alongside this one: Furukawa Unic URW295C1UR Operators Manual – Factory Specs, Furukawa Unic URA343 URA344 URA345 Operators Manual – OEM Specs, and Furukawa Unic URV290 Operators Manual – Factory Crane Specs. For general reference on transmission systems, see Manual Transmission and Manual Transmission.

FAQ

Does this manual cover the UR805 model?

Yes. Specifications for UR803, UR804, and UR805 are listed separately on pages 2-3 through 2-5.

What about the hydraulic circuit diagram?

Page 4-3 contains the full hydraulic circuit schematic. It is a factory diagram showing all lines, valves, and pumps. If you need to trace a leak or understand the flow, that page is mandatory.

Are the load charts in pounds or kilograms?

The charts in this manual use imperial units (pounds) for maximum load and boom angle. The original Japanese spec sheet included metric equivalents, but the printed manual sticks with US customary units as standard for North American distribution.

Can I use this manual for a Unic 700 series?

No. The 800 SERIES has different load capacities, controls, and maintenance intervals. Using the wrong manual will give you incorrect torque specs and load limits. Order the specific manual for your model.

You are paying for a machine that can lift tons. The 76-page factory manual is the cheapest insurance you will ever buy. Access the Factory Manual.