Install guide

ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Legend for Figure 4-17
2.
3.
4.
5.
6.
7.
8,
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
20.
Screw
Lockwasher
Washer
Relay K1
Diode CR1
Display logic circuit card assembly Al
Display logic circuit card assembly A2
Keyboard and control circuit card assembly A3
Control display unit holder
Screw
Washer
Control and display unit cover
Audible alarm DS3
Audible alarm gasket
Nut
Terminal lug
Screw
Washer
Nut
JacksCrew
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
Connector PI
Connector 4J1
Screw
Screw
Bezel
Fault indicator DS2
Washer
Nut
Screw
Washer
Control and display panel
Gasket
Fiber washer
Fiber washer
Screw
Flexible harness assembly
Display unit DS1
Screw
Washer
5.
6.
7.
8.
Unscrew audible alarm DS3 (13) from
control and display unit cover (12).
Remove audible alarm gasket (14) from
control and display unit cover (12).
Remove nut (15) securing connector 4J1
(22) to control and display unit cover (12).
Remove control and display unit cover
(12).
(b) Replacement.
4-142
1.
2.
3.
4.
5.
Install screw (17) securing terminal lug
(16) to control and display unit cover (12).
Secure wiring harness (36) to control and
dis lay unit cover (12) with two screws
(35) and four fiber washers (33 and 34).
Install audible alarm gasket (14) in audi-
ble alarm mounting hole in control and
display unit cover (12).
Screw audible alarm DS3 (13) in mount-
ing bole in control display unit cover (12).
Prepare and solder two tagged wires that
connect audible alarm DS3 (14) to termin-
nals ( + lead to E15, - lead to E14).
Clean solder joint to remove flux.
Change 5
6.
7.
8.
Install connector 4J1 (22) in D-hole pro-
vided in control and display unit cover (12)
and secure with nut (1 5). Apply sealing com-
pound (MIL-S-22373, Grade C) to threads of
nut. Torque nut 65 to 75 inch-pounds. Check
electrical bonding between nut and cover
with an ohmmeter. Resistance should be
5 milliohms maximum.
Inspect gasket (32). Replace if cracked,
tom, loose, or excessively compressed.
Position control and display panel (31)
against control and display unit cover
(12). Torque 16 screws 29 and washers
(3) securing control and display panel (31)
to control and display unit cover (12) 5
inch-pounds using procedures described
in paragraph 3-11.
(2) Relay K1. Remove and replace relay K1 (4,
figure 4-17) as follows:
(a) Removal.
1.
2.
Remove 16 screws (29) and washers (30)
securing control and display panel (31) to
control and display unit cover (12). Se a-
rate control and display unit cover (12)
and control and display anel (31) to per-
)
mit access to relay K1 (4 .
Remove two screws (l), lockwashers (2),
and washers (3) securing relay K1 (4) to