Installation of power and data cables between the P1 and P3/P4 structures in preparation for solar array deployment

Performing final tasks required for activation of the Solar Alpha Rotary Joint (SARJ); they also prepared the P3/P4 truss and its solar arrays for operation by setting the stage for deployment of the truss' radiator

Replacing a depleted nitrogen tank and a device used to help the flow of coolant from the truss. They also started inspecting, cleaning and lubricating the starboard SARJ and begin replacing 11 of 12 trundle bearings.

Relocating two equipment carts, setting the stage for the installation of the starboard S6 truss. They also lubricated the end effector of the Canadarm2. They also continued lubricating the starboard SARJ and replacing trundle bearings.

Completing starboard SARJ cleaning, lubricating and trundle bearing work.