Installing first six of an eventuel 23 debris shields on Zvezda

They disconnected cables from Destiny to PMA 2, demated avionics cables and released fluid tray bolts. They performed also a temporary stow of CETA light on Destiny.

Complete the exterior hookup of Harmony. Much of the spacewalk included the moving of a 300-pound, 18.5-foot fluid tray from its temporary location at the center of the station's main truss to Harmony.

Complete the exterior hookup of Harmony. Much of the spacewalk included the moving of another 300-pound, 18.5-foot fluid tray from its temporary location at the center of the station's main truss to Harmony.

Examination of the starboard Solar Alpha Rotary Joint (SARJ) and return a trundle assembly to the station's interior.

Replacing a motor with electrical failures, the Bearing Motor Roll Ring Module (BMRRM), called the 'broom". Inspection of the starboard Solar Alpha Rotary Joint (SARJ).

The astronauts installed adapter plates and hooked up electrical connections for three of six new lithium-ion batteries.

This spacewalk featured the astronauts reconnecting cables and electrical connections on PMA-3 at its new home on top Harmony.

They replaced an avionics box on the starboard truss called an ExPRESS Logistics Carrier (ELC), a storage platform.

The astronauts replaced a backup multiplexer-demultiplexer (MDM) that failed on May 20, 2017.