ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Legend for Figure 3-9
5.
Display logic circuit card assembly A2
1. Screw
6.
Keyboard and control circuit card assembly A3
2. Washer
7.
Control and display unit cover
3. Control and display panel
4. Display logic circuit card assembly A1
8.
Gasket
Card nomenclature and
Card
Part no. location on card
reference designator
part no.
index no.
On one end of connector on component
Display logic circuit card
880805-1
4,5
side
assembly A1 and A2
Near top edge (opposite connector end) on
Keyboard and control circuit card
880815-1
6
component side
assembly A3
c. Ambient Temperature Thermostatic Switch. Re-
(a) Clean guide pin (14) threads using isopropyl
move and replace thermostatic switch (4, figure 3-10) as
alcohol and clean, lint-free material; wipe
follows:
dry.
(1) Removal.
Apply sealing compound primer (MIL-
(b)
(a) Remove two screws (l), washers (2), and
S-22473) to guide pin (14) threads; allow to
cover plate (3) securing thermostatic switch
dry.
(4) to upper IMU subassembly (12). Remove
(c) Apply sealing compound (MIL-S-22473,
thermostatic switch (4) far enough to pro-
Grade C) to guide pin (14) threads.
vide access to soldered connections.
(b) Tag and unsolder all wires connected to
Install guide pin (14) in lower IMU subas-
(d)
thermostatic switch (4). Remove thermo-
sembly (13). Torque guide pin 90 to 100
static switch and gasket (7).
inch-pounds.
Lagend for Figure 3-10
12. Upper IMU subassembly
1.
Screw
13. Lower IMU subassembly
Washer
2.
14. Guide pin
Cover plate
3.
15. Porro prism cover
Thermostat switch S3
4.
16. Screw
Capacitor C3
5.
17. Washer
Capacitor C4
6.
18. Clamping catch
Gasket
7.
19. Retainer nut
Screw
8.
20. Washer
Clamping catch
9.
21. Bolt assembly
10.
Washer
22. IMU cover
11.
Nut
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