An apparatus for cleaning of textile objects by a densified liquid state treatment gas, such as liquified carbon dioxide, comprises a treatment chamber (10) in which a high pressure prevails during the treatment process in order for the treatment gas to remain in liquid phase at essentially ambient temperature. The treatment chamber (10), at one side gable thereof, is closable by means of a door (14) and encloses a rotatably mounted wash drum (12) supporting the textile objects to be cleaned. The wash drum (12) is rotated by a driving device comprising an electric motor (30) and possibly a transmission (24, 26, 28) and disposed in the treatment chamber (10). In order to facilitate repair and maintenance of the driving device, the shaft support of the drum, and the like, the treatment chamber (10) comprises a sledge device (40) which supports the rotatable wash drum (12) with shaft support and driving device and which can be moved between a first position in the treatment chamber and a second position outside the same.