The first of three spacewalks took place on Oct 5, 2017 to service the Space Station’s Robotic Arm (Canadarm2). Astronauts Randy Bresnik (EV1-red stripes) and Mark Vande Hei (no stripes) from Expedition 53, ventured outside the station exiting the Quest Airlock and starting a series of tasks in order to replace the end-effector A or LEE A of Canadarm2.
The following photos are from my AXM ISS papermodel and paper astronauts to represent the actual US EVA-44. For those who have assembled the ISS paper model, there is no need to make any changes to the model. This is only a demonstration.
Canadarm2 with both End-Effectors A and B. Notice the blue stripe at one end that corresponds to Latching End Effector B (LEE B). The LEE A is the faulty latching end-effector that will be replaced during this EVA.
Removing degraded LEE A from Canadarm2 at P1 truss
Temporary stowage of LEE A on CETA cart
Remove POA LEE from MBS
Installation of POA LEE on Canadarm2
Installing degraded LEE A onto MBS
The astronauts were ahead of schedule and were able to complete some “get-ahead” tasks before returning to the airlock.
Source: Spaceflightnow.com and Spaceflight101.com