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Liebherr LTM 1100-4.2 Technical Manual – What a 28-Year Tech Sees in These 26 Pages

I’ve spent more time under cranes and on job sites than most folks spend in their cars. You bring me an aftermarket manual for a Liebherr LTM 1100-4.2 Technical Manual – I’ll toss it. Half the torque tables are guessed, and the wiring diagrams look like a kid’s doodle. This OEM manual – 26 pages, straight from Liebherr – gives you the factory numbers, not some third-party rewrite. You want to set up a 100-ton mobile crane without breaking something? Start here.

Dimensions That Matter: Axle Loads and Steering Configurations

The first pages of this manual hit you with the numbers you need before you ever move the crane. Axle loads – 12 tons per axle with 2.5 tons of counterweight – that’s page 3 data for the LTM 1100-4.2. You also get the turning radius in all-wheel steering mode: R1 = 8.33 meters on standard tires. Those dimensions (A through K in the table) change depending on whether you’re running 385/95 R 25 or 445/95 R 25 rubber. If you skip verifying your tire size against those numbers, you’ll scrape a rear outrigger against a building. I’ve seen it happen. This manual gives you the exact mm for each configuration – no guessing.

Working Speeds and Rope Data: Page 3 Specs

Look at the drive table: two independent winch drums, each with infinitely variable speed from 0 to 115 m/min on a single line. Rope diameter is 19 mm, total length 250 meters, and each line pulls 77 kN max. That’s factory specification – not a translator’s approximation. The manual also covers the slewing gear (0 to 1.7 min−1) and the telescoping time: about 400 seconds to go from 11.5 to 60 meters. If you’re rigging a job and need to know how fast you can extend the boom, you don’t call Liebherr – you open this PDF. The OEM torque specs? They aren’t in this technical data manual (that’s in the service manual), but the load charts and speed limits are here and you follow them or you wear the liability.

Weights and Counterweights: 48 Tons Total

Page 3 lists the total weight at 48 tons with 2.5 tons of ballast. Axle 1 through 4 each carry 12 tons. That tells you your road transport permits, your crane mat requirements, and your pad size. Without those numbers you’re either overweight or undersized. The manual also shows the counterweight options – but the page notes “with 2.5 t counterweight” as the baseline. If you’re working a job that needs more, you need the supplementary data from the load chart section (not included in this technical manual, but the dimensions are here to calculate). This isn’t a coffee table book – it’s a field reference. Print the two pages that matter and laminate them.

Why OEM Documentation Matters for Mobile Cranes

Every aftermarket crane manual I’ve seen gets the metric-to-imperial conversion wrong. This one is OEM Liebherr – it’s in metric, but that’s fine because the crane’s systems are metric. You want to convert to inches and pounds? Do it yourself with a calculator, but start with accurate data. The Manual Transmission section in this manual? There isn’t one – it’s a technical data sheet, not a service manual. But the drive parameters are laid out so a Manual Transmission mechanic can understand the infinitely variable winch drives. That’s the difference between OEM and third-party: the OEM lines up exactly with what Liebherr printed at the factory. If a bulletin updates a spec, your manual is the baseline. The Manual Transmission reference might seem odd, but it’s the same principle – you need the right ratios and speeds. The manual gives you those.

3 Reasons to Choose This 26-Page Manual Over a Generic PDF

• Original factory dimensions: The layout diagrams on pages 1-2 are scanned from the same document Liebherr hands to crane operators in Germany. Axle spacing, overall length (13.5 m), and steering angles (up to 20°) are exact.
• Verified weight data: The 48-ton total weight with 2.5 t counterweight is the same number used for transport permits. Aftermarket “data” often omits the counterweight, leaving you under-estimating road load.
• Rope and drive specs you can trust: 19 mm rope, 77 kN line pull – those are the numbers for ordering replacement cable. Incorrect rope diameter means a failed lift. This manual prevents that.

Related Technical Manuals for Big Iron

If you’re working with other Liebherr equipment, check out the Liebherr R 9350 Technical Manual – Specs for Big Iron or the Liebherr R 934 C Technical Manual – Factory Specs for Excavator Repairs. For crawler excavators, the Liebherr R 956 2013 Technical Manual – Factory Specs for Crawler Excavator gives the same level of OEM detail. All share that same no-nonsense factory data you need to avoid a shutdown.

Frequently Asked Questions

Does this manual include torque specifications for the boom assembly?

No. This is a technical data manual covering dimensions, weights, rope specs, and drive speeds. Torque values are in the separate service manual.

What is the total page count and what formats are available?

26 pages, PDF format, scanned from the original Liebherr document. It’s searchable and printable. You get the full factory layout diagrams and tables.

Can I use this manual to lift a load without consulting the load chart?

Negative. This manual gives you the crane’s physical specs – tire sizes, axle loads, counterweight. Load charts are a different document. You still need the load moment indicator and the crane’s specific chart for the configuration. This manual tells you the crane’s capacity limits only through the rope pull and boom extension times; actual rated loads are in the load chart booklet. If you lift without that, you’re guessing – and I’ve seen guesswork snap cables.

What languages are included?

The PDF has text in German, French, Spanish, Russian, and English. The original file name shows de-fr-es-ru. The technical data uses symbols and numbers, so language isn’t a barrier for reading specs.

You need the factory numbers before you move an LTM 1100-4.2 onto a jobsite. This 26-page technical manual is the one document that gives you the dimensions, weights, and drive data without the guesswork. Access the Factory Manual and keep it in your tablet or print the critical pages. That’s how you keep a crane running and yourself out of trouble.