 After getting their tools and equipment for the EVA set up, Grunsfeld and Feustel removed the old Wide Field and Planetary Camera 2, which was installed in 1993 during the telescope's first servicing mission, and replaced it with the new Wide Field Camera 3 (WFC3).Feustel initially had trouble removing the bolts from the old camera, which after over fifteen years in space required more torque to remove than expected.After multiple attempts, managers on the ground decided to have Grunsfeld get a contingency torque limiter from the airlock, which would allow Feustel to apply more force without exceeding a specific point, but the bolt would still not release.