Thanks for sharing, Rick. The cylinder of the PZT definitely should not be floating atop the viton cord, and the PZT cylinder definitely should be registered onto the V contact planes of the Base and the two Clamps.

SYS (EddieS) is working on updating the drawing D1700002 for clarity, but these are the steps that should have been implemented during assembly:

1. During mounting of PZT cylinder into Base, first torque indicated bolts (at back end of PZT, furthest from mirror) per T1100066 document, ensuring even contact at all 4 lines of contact (2 between clamp and cylinder, 2 between base and cylinder) by torquing in steps. The PZT cylinder is solid at this rear clamping position, so a standard torque load should be achieved.
2. During mounting of PZT cylinder into Base, after completion of previous step, torque indicated bolts (at front end of PZT) as lightly as possible while registering all 4 lines of contact (2 between clamp and PZT cylinder, 2 between base and PZT cylinder). Torquing these bolts any further may cause deformation to the thin-walled tube at the area where the clamp contacts the PZT cylinder.

Some comments closing the loop on documentation:

• The mirror in question has ID: IO_MB_M4 (per D1300348) and the mount is detailed in assembly D1700002.
• The initial install work for this mount was captured in IIET Ticket 5132. That ticket is still open for documentation efforts that need to be completed.
• There is a follow-up IIET Ticket 12077 used to capture post-install status and alignment issues - a comment linking this log entry has been added to this ticket.