Spacewalkers float out to lubricate robotic arm

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United States spacewalkers install "new eyes" at space station 1326.

Two astronauts checked in with ground engineers today after completing the second of three spacewalks yesterday that are planned for this month.

Commander Randy Bresnik and Flight Engineer Mark Vande Hei called down to Mission Control today to discuss the elements of Tuesday's successful spacewalk.

During the second spacewalk, both Bresnik and Vande Hei lubricated the components of the new latching end effector and also replaced a faulty camera system.

The astronauts will lubricate components of a new hand they installed on the space station's Canadian-built robotic arm during an October 5 spacewalk. The pair also lubricated the latching end effector of space station's 58-foot-long robotic arm.

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Using a type of grease gun known as the ballscrew lubrication tool, or BLT, Vande Hei will then squirt grease into the new LEE that he and Bresnik swapped out during their previous spacewalk.

Rob Navias, the NASA spokesman, described the latest installation of HD camera as providing "new eyes" to the space station.

While conducting a spacewalk during shuttle mission STS-123 in 2008, NASA astronaut Rick Linnehan is anchored to the end of Canadarm2. The duo will also perform some electrical maintenance work and replace another degraded video camera. During next spacewalk on October 18, astronauts will replace another old camera nicknamed "Old Yeller" that is tinting images yellow.

Bresnik will conduct another spacewalk October 18 with NASA astronaut Joe Acaba to finalize the servicing on the Canadarm2 robotic arm.

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