The spacewalkers removed and stored a spare parts platform from the Special Purpose Dexterous Manipulator, or Dextre. Finally, they installed four electronics systems cables between Unity and Tranquility to bring the new node to life.

Installing ammonia plumbing connectors between Unity and Tranquility and covered them with thermal insulation.

Turning on the ammonia cooling lines between Unity and Tranquility, installing heater and data cables on Tranquility, removing insulation and launching locks from the newly installed Cupola, and installed handrails on the outside of Tranquility.