We remove from a door lowering glass (see Replacement of lowering glass of a forward door).

We take out the top sealant of lowering glass.

By the crosswise screw-driver it is turned off two screws of fastening of a frame of rotary glass to a door.

By the screw-driver it is moved apart a sealant of lowering glass...

... also we take out rotary glass together with a frame.

We establish new rotary glass in the sequence, the return dismantling.