(see WP #6386)  

Used the North Crane to "fly" a leak detector over the XBM.  Leak tested the CF joints on the newly assembled annulus ion pump piping associated with the 2K IMC A spool - B spool flange.  Upon attempting to start the ion pump, I discovered that the orientation of the HV connector was 180 degrees off from what was needed.  This resulted in an interference by the aluminum mounting plate such that the HV cable couldn't be connected.  Doh!  Had to vent the ion pump and reinstall it in the correct orientation.  Afterwards, I dumped the vented ion pump volume into the rest of the annulus volume and pumped it back down but ran out of time (at noon, anyone still in the LVEA is turned into stone!) before being able to get the ion pump to run unassisted.  So this task will be left to finish up on the next maintenance day.