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Tadano ATF 80-4 Technical Manual – Factory Load Ratings and Safety Specs

I’ve been wrenching for almost three decades, and I can tell you the fastest way to turn a crane into a pile of scrap is using a photocopied load chart from some forum. The Tadano ATF 80-4 Technical Manual is the exact document that leaves the factory in Houston – 27 pages of load rating charts, outrigger reaction force tables, and warning instructions that Tadano engineers wrote. If you’re operating or maintaining this all-terrain crane, you’re gambling every time you lift without these numbers.

Load Rating Charts: What the OEM Says vs. What You’ll Find Online

Page 2 of this manual spells out the formula: total rated load = (tipping load – 0.1 tip reaction) / 1.25. That’s not a suggestion – it’s DIN 15018 Part 3 compliance. Online copies often round capacities or skip the footnote about hook block weight subtraction. The factory manual lists hook block weights in pounds (440 lbs for 6.3 tons, 1,660 lbs for 68.5 tons) – you subtract that from the chart to get net load. Miss that step and you’re lifting blind.

Outrigger Setup: Why Pinning and Tire Clearance Matter

I watched a guy drop a 50-ton load because his outrigger wasn’t pinned to the dimensions in the Tadano load rating chart. The manual says: outriggers shall be extended according to the chart and secured by pins with tires free of supporting surface. That’s non-negotiable. If the counterweight indicator goes out, all crane movements are switched off – the manual tells you exactly how to reset that. Page 2 has the setup checklist.

27 Pages of Factory Specs – No Aftermarket Abbreviations

This isn’t a reprint from a third-party that cut corners. It’s the original Tadano PDF, serial number 85107, version 00. Every page has the Tadano America Corporation letterhead and Houston address. The manual covers load rating charts for all boom lengths and outrigger configurations, plus the outrigger reaction force charts that tell you ground pressure. For transmission or drivetrain work, see the separate Manual Transmission service guide – this crane manual focuses strictly on lifting capacity and stability.

Safety Warnings from Page 2: General, Setup, Operation

Three separate sections. General: modifications invalidate capacities. Setup: level firm surface, structural supports under outrigger floats if needed. Operation: loads above the bold line on the chart are strength-limited; below are stability-limited. The manual also gives you the maximum lifting capacity (100 tons at 12 parts of line) and reminds you that wind on lifted load isn’t accounted for – you have to derate. Every operator should read these warnings before touching the controls.

Does This Manual Cover the Crane’s Hydraulic or Engine Systems?

No. This is the Technical Manual for load rating and safety only – it’s not a service manual for the engine, hydraulics, or carrier. If you need repair procedures for the Tadano undercarriage, look at Manual Transmission documentation or the separate service manual. This one gives you the critical load data that keeps the machine from tipping over. For other Tadano models with similar rating needs, check out the Tadano GR-1000XL-2 Technical Manual – Factory Specs for 100-Ton Crane and Tadano AC40 Technical Manual – Factory Specs & Dimensions.

Who needs this? Any mechanic, operator, or fleet manager responsible for a Tadano ATF 80-4. If you’re a DIY crane owner – and I know a few – you cannot eyeball these capacities. The manual’s target audience is professionals who value verified data over guesswork. Beginners: study this before your first lift. The outrigger reaction force chart alone prevents ground failure that kills.

Source authenticity: direct from Tadano America Corporation. No aftermarket “interpretation” of the load rating chart – just the original DIN-standard document with the serial number printed on page 1. Every torque spec? Not in this manual – that’s in the service manual. But every load rating and outrigger dimension is factory-certified.

• Tadano GR-1000XL-2 Technical Manual – Factory Specs for 100-Ton Crane
• Tadano AC40 Technical Manual – Factory Specs & Dimensions
• TADANO TR-600XXL-4 Hydraulic Rough Terrain Crane Manual

Is this the official manual from Tadano?

Yes. It’s the exact PDF from Tadano America Corporation, with the original serial number and letterhead. No reprints.

Can I use this for a different Tadano model?

No. Load ratings are specific to each crane’s geometry and counterweight. Using ATF 80-4 data on a GR-1000XL could cause a catastrophic tip-over. Get the correct manual for your model.

What torque specs are included in these 27 pages?

None. This Technical Manual focuses exclusively on load rating charts, outrigger reaction force, and safety warnings. Torque values for bolts and fittings are in the separate service repair manual. Don’t expect fasteners here.

How do I read the load rating chart correctly?

The chart has bold lines separating strength-limited loads (above) from stability-limited loads (below). You must subtract hook block weight from the listed capacity. For example, at 10 parts of line the chart says 68.5 tons; subtract 1,660 lbs for the hook block to get net load. The manual’s warning section on page 2 explains this step-by-step.

If you’re working on this crane, get the right data. Access the Factory Manual now.