Description

Liebherr PR 734, PR 734L, PR 734XL, PR 734LGP 2010 User Manual

If you are wrenching on a Liebherr PR 734, PR 734L, PR 734XL, PR 734LGP 2010 User Manual dozer without the factory paperwork, you are rolling the dice on every bolt you torque and every hydraulic line you replace. I have seen shops waste a full day chasing a bogus spec from a third-party reprint. That does not happen with an original OEM document. This manual is 312 pages of verified factory data, printed in 2010, covering all four PR 734 variants. It does not contain generic charts or guesses. It contains the exact preload values, fluid capacities, and safety procedures that Liebherr stamped on the production line.

Torque Specs and Bolt Preloads

Chapter 1.2 of this manual is dedicated to Couples de serrage – torque specs for screws, wedges, and blades. The factory gives preload forces for bolts with standard and reduced shanks. Skip that section and you will either strip threads in the final drive housing or leave a blade loose enough to shift under load. On page 2, the technical characteristics table shows where to find your machine’s serial number (left front of the main frame). Write that number down before you start. You will need it to match the correct torque table later.

Does This Manual Cover Safety Procedures?

Chapter 2 runs nineteen subsections deep – from general safety to ROPS/FOPS protection, hydraulic line maintenance, and even welding precautions on the frame. If you are doing any work near the blade linkage or track tensioning system, you need section 2.4.14 on hydraulic hose care. A burst line at 3000 psi will take off a finger before you can blink. The manual also covers emergency towing and auxiliary starting procedures (chapter 3.8). These are not in the aftermarket summaries. You get them here, in the original language, with the original diagrams.

3 Key Sections for Daily Operation

The manual breaks down daily operation into three clear blocks: controls (chapter 3.1), driving/fine grading (chapter 3.2–3.4), and transport/lifting (chapter 3.5–3.7). If you are a new operator, pay close attention to section 3.4.2 on fine grading – it explains how to use the blade float function without digging a hole. For seasoned mechanics, the troubleshooting chapter (chapter 4) lists common faults and the step sequence to clear them. No guesswork, just page numbers and symptom charts.

Understand the Controls Before You Start

Before you fire up that diesel, go through section 3.1.2 – Eléments de contrôle dans la cabine. The manual shows every switch, indicator, and pedal. It also covers the air suspension seat adjustment and the backup alarm override (section 3.2.16). I have watched guys grenade a transmission because they thought the neutral lock was a parking brake. Do not be that guy. Read the control layout, then touch anything.

Troubleshooting: What the Manual Tells You

Chapter 4 lists malfunctions and corrective actions. It is not a long winded essay – it is a table. You get the symptom, the probable cause, and the fix. For example, if the blade drifts down while parked, the manual points to the spool valve or cylinder seals. It also covers cold-weather starting difficulties and the glow plug cycle. That kind of specificity saves you from replacing parts that are still good. And because this is an OEM manual, the electrical and hydraulic diagrams match your machine’s VIN range.

OEM vs Aftermarket: Why This Manual Wins

Every number in this 312-page document was measured at the Liebherr factory in Telfs, Austria. The torque specs follow DIN preload standards, not a generic internet list. The safety warnings are the same ones that came with the original machine. Aftermarket “reprints” often skip pages, flatten images, or translate incorrectly. I have seen a reprint swap left and right track tension directions – that will ruin your undercarriage in a day. This is the real file, scanned from the original French edition (commande no. 9085092, edition 07/2010). No translation errors, no missing sections.

For related factory documentation, check out the Liebherr D846 2009 User Manual – Factory OEM Specs”> or the Liebherr D934 D936 D946 2009 User Manual – OEM Factory Specs”>. Larger crane applications are covered in the Liebherr LTM 1160-5.1 User Manual – 984 Pages OEM Factory Specs”>. If you need a refresher on transmission fundamentals, see Manual Transmission”> and Manual Transmission”> for general principles – but always return to the factory spec for your specific machine.

What years does this manual cover?

This is the 2010 edition, valid for PR 734 machines from serial number 10040 upward.

Does it include wiring diagrams?

Wiring for the electrical system is covered in chapter 3 (controls and indicators) and in the troubleshooting chapter. Full electrical schematics are part of the manual, not separate.

Is this manual in English?

No, the original file is in French (Manuel de conduite). If you work on European-built equipment, you are used to metric and French labels. The diagrams and torque tables are language-independent. Translate the safety warnings if you need to – do not skip them.

Will this manual work for a PR 734 with a different cab configuration?

Yes. The manual covers all four undercarriage versions (standard, long, XL, LGP) and includes the ROPS/FOPS variations. Cab options like air conditioning and heated seats are in section 1.1.1 and 3.2.9.

Stop wrestling with half-copied PDFs and outdated forum posts. Get the actual factory paperwork on your screen. Access the Factory Manual now and have the specs you need before you turn a wrench.