New Look for DS09-4X and USP-1

In 2008, the track construction machines DS09-4X and USP-1 were procured for use in Switzerland. After 16 years, the two diesel engines of the DS09-4X had to be replaced. At the same time, both machines were branded with the RSRG design.

Since 2008, the high-performance machines DS09-4X and USP-1 have reliably carried out tamping and leveling work on the SBB track lines. Due to technical problems with the two Deutz diesel engines, each with 440 kW power, the project to replace the engines was initiated in the winter of 2022/23. Demtech AG delivered and installed the new Deutz diesel engines in the winter of 2023/24. These engines meet the EU Stage V emission standards using AdBlue. The exhaust cleaning was replaced by a newly integrated solution from Deutz.

Since 2008, the DS09-4X has performed over three million tamping cycles. During each overhaul, crack inspections are conducted in the tamping unit area. In the winter of 2022/23, some repair welding was necessary. The overhaul in the winter of 2023/24 was used for extensive inspection and repair, ensuring the machine is ready for future operations.

In the USP-1 leveling machine, bogie 2 was removed to fit new wheel discs. The removal and installation of thebogie were prepared and supervised by the engineering team at Rhomberg Sersa Technology (RST).

At the same time, both machines received a new paint job according to the new RSRG design. There are European standards for the painting of track construction machines, such as requiring the fronts to be yellow to ensure the machines are visible on construction sites. The guidelines for railway technical markings are also regularly updated. Therefore, the engineering team created a detailed visualisation of both machines, which was reviewed and approved by the Federal Office of Transport. These graphics served as precise work templates in the workshop. In addition to the large logos, over 180 small pictograms were applied to the DS09-4X and around 75 symbols to the USP-1.