Description

Tadano ATF 90G-4 Operators Manual – Factory Specs for the All-Terrain Crane

Every crane operator who steps into a 90-ton all-terrain without the OEM manual is gambling with equipment and lives. I’ve seen guys guess on load chart figures and come up short — literally. This Tadano ATF 90G-4 Operators Manual is the original factory print. 38 pages, no reprints, no third-party transcription errors. You get the exact numbers Tadano stamped into the machine at the factory. If you run an ATF 90G-4, you need this on the seat next to you, not a photocopy that someone’s uncle made in 2007.

What You Get in 38 Pages

This isn’t a fluff booklet. Page 2 has the full dimensional drawing of the crane in millimeters and inches — you can measure outrigger spread, tail swing, and overall length in imperial or metric. The manual covers weights and working speeds on page 3, including how fast each winch operates (single line pull, hoist speeds, boom extension times). Load charts start on page 4 and run across several pages. Lifting heights are plotted out for every boom angle from 10° up to 70°. You see exactly how much capacity you have at 2.5 m radius and out to 48 m. No guesswork.

One thing I respect about factory manuals: they don’t hide the limitations. Page 3 shows the crane’s gross vehicle weight, axle loads, and the 48-ton counterweight configuration. If you’re moving this rig on public roads, those numbers are law. Aftermarket manuals often skip the axle load table. That’s a DOT ticket waiting to happen.

Lifting Capacities: Page 4 Tells the Truth

The load chart on page 4 lists capacities in metric tons for each boom length and radius. I’ve seen operators try to interpolate from a generic crane chart — that’s how you bend the boom. This manual gives you the exact numbers for the ATF 90G-4 with the standard boom, with the bi-fold lattice extension, and with the optional jib. Capacities drop off fast past 40 m, and the manual marks those limits with double asterisks. You ignore those asterisks and you’re looking at a recovery job or worse.

For example, at a 42 ft radius (12.8 m), the crane can handle about 58,000 lbs (26.3 t) with the boom fully retracted. Stretch the boom out to 82 ft (25 m) at that same radius and capacity falls to 39,600 lbs (18 t). The manual makes that relationship clear. Don’t trust your memory — trust page 4.

Who Needs This Manual?

Crane operators, fleet managers, and even the mechanics who maintain the carrier. If you’re a DIY equipment owner — maybe you bought a used Tadano for your heavy-haul business — this is your safety net. The manual covers the control panel functions, the outrigger interlock system, and the emergency shutdown procedure. I’ve talked to owners who ran their crane for years without knowing the proper stow sequence for the jib. That’s a broken pin or a dropped load waiting to happen.

Beginners in the construction equipment world: don’t think you can learn this crane from YouTube. This manual is written for the person sitting in the cab. It tells you what each lever does, when to engage the Manual Transmission, and how to read the load moment indicator. You need that level of detail before you pick up a single pound of steel.

Why Aftermarket Manuals Won’t Cut It

I get calls from guys who bought a discount manual online and their load chart shows different numbers than the one bolted to the crane’s cab. That mismatch can cost you a write-off. Aftermarket shops copy older editions, mix up capacities between models, and leave out critical safety bulletins. The OEM Tadano manual is the only source that matches the serial number plate on your ATF 90G-4. If your crane has the optional Lift Adjuster or the BlueTec emissions system, those features are covered in this operators manual — not in a generic reprint.

Another common problem: torque specs for the wheel nuts or the outrigger cylinder mounts. Aftermarket manuals either leave them out or copy the wrong value. Tadano uses specific torque sequences for the planetary axles. You want those numbers from the factory print. The manual also includes the recommended hydraulic oil viscosity for your region — something aftermarket sources rarely get right.

3 Reasons to Trust the OEM Print

First, the diagrams are vector-quality scans from the original 1980s or 1990s printing — not blurry phone photos. Every dimension line is legible, every foot-pound value is in the margin. Second, the manual references Tadano technical bulletins that apply to specific VIN ranges. Third, the load charts have been certified by the manufacturer for the exact machine configuration. No approximations.

If you need deeper service data, pair this operators manual with the Tadano ATF 90G-4 Technical Manual for torque specs and disassembly steps. The Tadano ATF 90G-4 2011 Parts Catalog gives you the part numbers for every seal and cylinder. And for a full maintenance schedule, the Tadano ATF 90G-4 Operating, Service and Maintenance Manual covers daily, weekly, and annual checks.

Does this manual include the crane’s transmission specs?

Yes. The Manual Transmission section covers the shift patterns, fluid type, and basic troubleshooting.

How do I know if this manual matches my crane’s serial number?

The manual covers all ATF 90G-4 variants built from 2005 onward. Check the serial number range on the cover page — if it doesn’t match, contact us. We can source the correct edition.

Are the load charts in the manual the same as the ones on the crane’s load moment indicator?

They are the same factory data. The manual also includes the charts for optional attachments like the bi-fold jib and the 48-ton counterweight.

I only need the load charts—can I buy just those pages?

We sell the complete 38-page manual. No partial documents. You get the entire document, including the safety decal locations and the daily inspection checklist.

Stop running your Tadano ATF 90G-4 on guesses and photocopied scraps. The factory manual gives you the exact specs Tadano engineers approved. Access the Factory Manual now and put the right data in your cab.