T M 9 - 4 9 3 1 - 3 8 1 - 1 4 & P - 2
FRAME 28
Remove Lens, Lamp, or Housing:
NOTE
l Use this task to replace any of three lenses (1), lamps (2), or
indicator lights (3) DS1, DS3, or DS4. TRU READY 0S3 is
shown. If only changing lens (1) or lamp (2) do steps 1 and 6.
l Read paragraph 2-4 on tagging and soldering wires before doing
any work.
1.
Unscrew and take out lens (1). Pull lamp (2) from lens (1). Look at lens (1) and lamp
(2) for cracks. If bad, turn in lens (1) or lamp (2). If OK, set aside for later use.
2.
Tag and unsolder wires (4) from indicator light (3).
3. Unscrew and take off nut (5) and Iockwasher (6) with wrench. Get rid of
indicator light (3), nut (5), and Iockwasher (6).
Install Lens, Lamp, or Housing:
4.
Put new indicator light (3) through hole in panel (7) and screw on and tighten nut (5)
and Iockwasher (6) with wrench.
5.
Solder wires (4) to indicator light (3).
6.
Put new lamp (2) in new lens (1) and screw lens (1) into indicator light (3).
Follow-on Maintenance:
1. InstalI panel assembly A1 (if removed); refer to task 26.
2. Install thermal system test controller (if removed); refer to para. 2-5, task 8.
3. Install thermal system test controller case cover; refer to volume 1, para. 4-18.
TASK 13 ENDS HERE
Volume IV
2-72
Para. 2-6, Task 13
