2-11. TADS NSA INSTALLATION ON NIGHTSIDE TEST BENCH. (CONT)
(5) Prepare UUT handling fixture (1, figure 2-8) for attachment as follows:
(a) Lift (open) locking lever (2) to vertical position to release clamp arm (3).
(b) Loosen thumb locknuts (4).
(c) Slide clamp arm (3) toward locking lever (2) as far as it will go.
While installing handling fixture, use extreme care to prevent damage to
optical and mirror assemblies.
(6) Attach handling fixture (1, figure 2-9) to TADS NSA (2) as follows:
(a) Press down on fixture clamp arm (3) near locking lever (4) to raise fixture clamp arm
bumper pad (5).
(b) Carefully slide fixture clamp arm bumper pad over edge of TADS NSA casting (6).
(c) Ensure that TADS NSA ballast plates (7) are resting against fixture stop bracket (8) and
rubber pad (9).
(d) Firmly seat fixture clamp arm (3) and clamp arm pad (5).
(e) Handtighten thumb locknuts (10) until they start to depress fixture clamp arm (3).
(f) Push (close) fixture locking lever (4) down.
(g) Ensure that fixture locking lever (4) closes firmly at approximately a 90 degree angle from
(h) Try to slightly move handling fixture.
If locking lever will not close properly, or if holding fixture can be moved,
open locking lever and tighten or loosen thumb locknuts. Repeat steps (c)
through (h) above until locking lever can be properly closed and handling
fixture will not move on TADS NSA.