Pre-mounted exchange insert of a drill wash device

A pre-mounted exchange insert of a drill wash device for connecting a stationary washpipe to a rotating washpipe of a drill hole, comprising:

• a mechanical seal assembly with a stationary seal ring and a rotating seal ring;
• a first seal ring carrier on which the stationary seal ring is arranged;
• a second seal ring carrier on which the rotating seal ring is arranged;
• a connection component which is configured to connect the exchange insert to the stationary washpipe;
• an adjusting mechanism operative in an axial direction with a screw connection for changing an axial length of the exchange insert, wherein the screw connection is connected to the second seal ring carrier to permit, in the axial direction, an adjustment of the second seal ring carrier, the mechanical seal assembly and the first seal ring carrier relative to the connection component;
• and
• a transportation lock with at least one spring element which, before a final assembly of the pre-mounted exchange insert, exerts a preload on the mechanical seal assembly, and no longer exerts a preload on the mechanical seal assembly when the exchange insert is in an end-mounted state.