If the seal kit has to be opened during repairs, the installation of a new seal kit is required, even if the wear limit has not yet been reached. After only a relatively short period of time, the sliding surfaces have run into each other. When reas- sembling the same installation position is no longer guaranteed. As a result, overlaps of the running orientation of the sliding surfaces may result. This has the consequence that impermissible leakage occurs until the end of the re-entry process.