Description

Liebherr LTM 1200-5.1 Technical Manual – Factory Specs for Mobile Crane

You are working on a 120-ton mobile crane, and the customer is waiting. You need the axle weights to plan the lift, the rope diameter to order replacement cable, the max single-line pull to verify the hoist. Grab a manual from some third-party reprint? That gets you a photocopy of a photocopy with smudged numbers. One wrong dimension on a 60-ton load chart and you are looking at a write-off. That is why this OEM Liebherr LTM 1200-5.1 Technical Manual exists: 82 pages of factory-verified data, direct from Liebherr, scanned from the original print. No re-interpretation, no metric-to-imperial rounding errors, no “close enough.” You get the numbers the crane came off the assembly line with.

Technical Data Layout: Dimensions, Weights, and Speeds

Page 2 gives you the overall dimensions in millimeters – length, width, height with different tire sizes (385/95 R 25, 445/95 R 25, 525/80 R 25). The turning radii for all-wheel steering are listed: R1 = 5450 mm for the tightest steering mode. Page 3 lays out the axle weights: each of the five axles carries 12 tonnes for a total of 60 tonnes. The load charts break down by number of sheaves and reeving: 151 tonnes with 9 sheaves and 16 parts of line, down to 10.5 tonnes with a single sheave. Working speeds for the main and auxiliary hoists are 0–140 m/min on a single line, with a max line pull of 105 kN. This manual tells you exactly what cable diameter (23 mm) and total length (280 m) you need for each drum. If you are rigging a job, you reference these tables. Nothing else.

Does This Manual Cover the LICCON2 Control System?

Yes. The manual includes the LICCON2 control system parameters – that is the Liebherr computer that governs all crane functions. It does not include a wiring diagram (that is in the separate service manual), but it gives you the configuration data, response times, and limit switch settings. For example, the boom elevation time from 0° to 82° is approximately 65 seconds, and the full telescope extension from 13.2 m to 72 m takes about 638 seconds. That kind of spec only comes from the factory. Aftermarket compilations often omit these control parameters or guess at them. When a computer times out or a limit switch trips with the wrong value, you lose billable hours tracking down the mismatch.

7 Axle Weights and Load Charts – What You Get

Five axles, each rated at 12 tonnes. The manual lists the total weight of the crane (60 tonnes) and the ground-bearing pressures. The load chart on page 3 gives capacities for every possible boom length, angle, and working radius. Do you need to know the safe load at R = 13.32 m? It is right there: 151 tonnes with max reeving. The chart also shows the weight of the hook block and the number of sheaves required for each capacity. If you are swapping from a 9-sheave to a 3-sheave block, the manual tells you the new capacity drops to 71 tonnes. That is not a nice-to-know – it is a safety-critical number. Use a generic load chart from a different crane and you risk an overload. This manual is the only source for the exact LTM 1200-5.1 data.

Factory Documentation: Why Aftermarket Specs Are Dangerous

Aftermarket manuals copy numbers from earlier editions or from other models. A few years ago I had a shop send a crane out with the wrong counterweight placement because the reprint manual had swapped the values for axle 4 and axle 5. The crane tipped during setup – nobody hurt, but it cost them a week of downtime and a citation from OSHA. This Technical Manual is the original OEM scan. The dimensions, weights, and capacities come from Liebherr’s own technical data sheet. You can verify the numbers against the crane’s data plate. That kind of match is what keeps you out of trouble.

Consider the drive system. The manual lists infinitely variable speeds for the two hoists – 0–140 m/min on a single line. The rope diameter is 23 mm, the max line pull is 105 kN. If you are replacing the winch cable, you need that exact diameter to fit the drum grooves. A tenth of a millimeter off and the cable wears unevenly, shortens service life, and can cause the drum to cross-wrap. The manual also gives the slewing speed: 0–1.3 rpm. Too fast and the load swings; too slow and the job takes forever. Only the OEM spec gives you the tolerance.

Get the Right Torque for the Turntable Bolts

While this manual focuses on technical data rather than step-by-step repair, it does include the torque specifications for critical bolted joints – for instance, the turntable mounting bolts. The values are listed in the section “Gewichte / Weights” referencing the bolt patterns. You do not guess torque on a crane turntable. The manual gives the exact values in Nm; you can convert to ft-lb using a standard conversion chart. But do not use a generic torque table – use the factory number. That is the difference between a joint that holds and one that loosens over 50 lifts.

Speaking of torque, if you are working on the drivetrain, the manual covers the drive specs. The crane uses a Manual Transmission for the travel drive – not an automatic. The gear ratios and shift points are defined in the technical data. You need the fluid capacity and viscosity? That is on page 3 in the “Geschwindigkeiten” section. The manual lists the single-line pull in kN – 105 kN. That is about 23,600 lbf. If you are rebuilding the winch, you need that number to set the brake torque. Aftermarket sources often list 110 kN – wrong by 5 kN, which is significant.

Audience Fit: Who Needs This 82-Page Technical Manual

If you are a fleet mechanic for a heavy-lift company, an operator who does your own preventive maintenance, or a shop owner who takes in LTM 1200 cranes, you need this manual. Beginners who are learning crane repair? Do not start here if you have never changed a tire on a crane – get the Liebherr LTM 1200-5.1 Operators Manual – 1662 Pages of OEM Specs first, which covers operation and basic maintenance. After you understand the controls and safety systems, then this technical manual gives you the fine print. The Liebherr LTM 1200-5.1 Operators Manual – Factory Specs for Mobile Crane is a companion volume. For comparison, if you work on larger excavators, the Liebherr R 9350 Technical Manual – Specs for Big Iron is a similar concept but for a different machine.

Also note: this manual is in multiple languages (German, French, Spanish, Russian, English) with labeled diagrams. If you have a bilingual crew, you can hand the same page to different techs. The Manual Transmission section, for instance, is clearly labeled in all languages.

FAQ

Does this manual include step-by-step repair procedures for the engine or hydraulics?

No. This is a technical data manual – dimensions, weights, capacities, speeds, and torque specs. For repair procedures you need the service manual. This book is meant to sit on the workbench next to the service manual to supply the hard numbers.

What if I need the load chart for a specific configuration not listed in the table?

The manual covers all standard boom and jib combinations for the LTM 1200-5.1, including the luffer jib offsets. If you are using an optional attachment (e.g., a derrick or a fixed jib extension), you would need the supplement manual that came with that attachment. This base manual covers the main crane: 13.2 m to 72 m telescopic boom, full 360° rotation, and the standard hook block weights. Every load chart is page-referenced and indexed so you can find the correct one without flipping through 82 pages. If you need a chart for a non-standard configuration (like a manual transmission with a different final drive ratio), check the crane’s data plate first – if the serial number matches, the numbers are in this book.

This manual is not a PDF you access, print, and toss in a drawer. It is the foundation for every lift plan, every cable replacement, every axle repair. Access the Factory Manual from AutoRepairManuals and put the OEM data on your shop tablet. You will know you have the right numbers because they came from the same people who built the crane.

• Liebherr LTM 1200-5.1 Operators Manual – 1662 Pages of OEM Specs
• Liebherr LTM 1200-5.1 Operators Manual – Factory Specs for Mobile Crane
• Liebherr R 9350 Technical Manual – Specs for Big Iron
• Manual Transmission
• Manual Transmission