What does the on-site service look like?

In this episode, we move straight to the construction site, where the installation of a hydraulic pump in the Liebherr L30 LH35 excavator is taking place. This is a perfect opportunity to show how a professional pump replacement and cleaning of the entire hydraulic system looks in practice.

When to replace the pump? Typical symptoms and operating hours

The pump was brought to the service with classic signs of wear – the tilt plate bearings were damaged. The machine had 13,000 operating hours, which, as the service team notes, is a typical moment to conduct a pump inspection, or even a preventive bearing replacement.

Specialists' recommendation: pump inspection every 10,000 operating hours.

Installation of the new pump – step by step

The installation begins with preparing the coupling and bolting the pump to the engine housing. Next, the rotation pump is installed. Thanks to the use of suspension, the entire process runs smoothly and safely.

Tip: even with manual installation, it is worth using simple suspension tools, which minimizes the risk of damage.

Cleaning the tank and filtration – the key to longevity

The team proceeds to clean the hydraulic tank – interestingly, the tank design in this model facilitates access through two covers: one in front of the filter, the other behind the filter. This allows for thorough cleaning, although, as they say, "you need to have the will." New filters are then installed, and the process of bleeding the pumps begins.

Filling and filtering oil – safety first

Even though the machine contains new oil, the technicians decide to perform additional filtration of the entire system. This allows for the removal of potential metal shavings and protects the new pump from rapid wear.

Pressure measurements – P1 and P2

After starting the machine, working pressure measurements are taken – everything is within the standard norms. The machine passes the tests and returns to full functionality.

Summary – what is worth remembering?