T M 9 - 4 9 3 1 - 3 8 1 - 1 4 & P - 2
FRAME 19
Remove Variable Resistor (Continued):
NOTE
l
Use this frame to remove any of three variable
resistors:
BORESIGHT AZ R7
BORESIGHT EL R8
AZ OFFSET
R13
BORESIGHT EL variable resistor R8 (1) is shown.
l
Read paragraph 2-4 on tagging and soldering wires and
switches before doing any work.
1.
Tag and unsolder wires (2) from variable resistor (1).
2.
Unscrew and take off nut (3), anti-rotation washer (4), and Iockwasher (5) with
wrench. Get rid of nut (3), washer (4), Iockwasher (5), and variable resistor (1).
Install Variable Resistor:
3. Put new variable resistor (1) through hole in panel (6).
4.
Screw on and tighten new nut (3), new Iockwasher (S), and new washer (4) with
wrench.
5. Solder wires (2) to variable resistor (1).
Follow-on Maintenance:
1. Install variable resistor or switch knob or control dial; refer to task 22.
2. Install panel assembly A1; refer to task 26.
3. Install thermal system test controller; refer to para. 2-5, task 8.
4. InstalI thermal system test controller case cover; refer to volume 1, para. 4-18.
TASK 9 ENDS HERE
Volume IV
Para. 2-6, Task 9
2-59
