Install guide

ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
10.
11.
12.
13.
14.
Install + 10V converter-regulator circuit
card assembly A2 (50) in accordance with
paragraphs 4-19b(2)(b)l thru 4-19b(2)(b)5.
Install 28V converter-regulator circuit
card assembly A3 (63) in accordance with
paragraphs 4-19b(3)(b)l thru 4-19b(3)(b)6.
Install filter circuit card assembly A4 (68)
in
accordance with
paragraphs
4-19b(4)(b)l thru 4-19b(4)(b)5.
Install sequence monitor circuit card as-
sembly A5 (61) in accordance with para-
gaphs 4-19b(5)(b)l thru 4-19b(5)(b)5.
Secure bottom cover (45) and gasket (46)
to chassis (22) with 25 screws (43) and
washers (44). Torque screws to 9 inch-
pounds using procedures described in par-
agraph 3-11.
(9) Chassis-mounted component removal and re-
placement.
The following procedures describe removing
and replacing of chassis-mounted components. Some
components can be replaced using standard shop prac-
tices and are not covered here. When self-locking nuts
are removed, replace with new self-locking nuts. Re-
move side cover (3, figure 4-19, sheet 1) or bottom
cover (45, figure 4-19, sheet 3) to gain access to compo-
nents when applicable. After component is replaced,
secure cover and torque screws to 9 inch-pounds using
procedures described in paragraph 3-11.
(a) Circuit breaker cover removal
1.
Release circuit breaker cover (3, figure
4-20, sheet 1) clamping catch from strike
(6).
NOTE
When removing other circuit breaker
cover, also remove terminal lug (7).
2. Remove two screws (1) and washers (2)
securing circuit breaker cover (3) to chas-
sis (8); remove circuit breaker cover.
(b) Circuit breaker cover replacement.
1. Inspect circuit breaker cover (3) gasket
for darnage and replace if required.
NOTE
When replacing other circuit breaker
cover, also secure terminal lug (7).
2. Secure circuit breaker cover (3) to chassis
(8) with two screws (1) and washers (2).
3. Secure circuit breaker cover (3) clamping
catch to strike (6).
(c) Circuit breaker CB1 removal.
1. Remove self-locking nut (28, figure 4-20,
sheet 2) end washer (29) securing bus bar
W1 (27) to circuit breaker CB1 (25); re-
move bus bar W 1,
2. Remove self-locking nut (30) and washer
(31) securing terminal lugs (32 and 33) to
circuit breaker CB1 (25); remove terminal
lugs.
3. Remove screw (55) and washer (56) secur-
ing terminal lug (59) to relay K2 (54);
remove terminal lug.
4. Tag and unsolder wires from terminals on
circuit breaker CB1 (25).
5. Open circuit breaker cover and remove
two screws (22 and 23) and washer (24)
securing circuit breaker CB 1 (25) to chas-
sis (8); remove circuit breaker CB1.
6. Remove capacitor C4 (26) from circuit
breaker CB1 (25).
(d) Circuit breaker CB1 replacement.
NOTE
Discard hardware supplied with new cir-
cuit breaker except flat washers,
1.
2.
3.
4.
5.
6.
Bond capacitor C4 (26) to circuit breaker
(25) using urethane adhesive (960278-4).
Secure circuit breaker CB1 (25) to chassis
(8) with two screws (22 and 23) and
washer (24). Close circuit breaker cover.
Secure terminal lugs (32 and 33) to circuit
breaker CB1 (25) with self-locking nut
(30) and washer (31).
Secure bus bar W1 (27) to circuit breaker
CB1 (25) with self-locking nut (28) and
washer (29).
Solder wires to terminals on circuit
breaker CB1 (25).
Secure terminal lug (59) to relay K2 (54)
with screw (55) and washer (56).
(e) Circuit breaker CB2 removal.
1. Remove self-locking nut (35, figure 4-20,
sheet 2) and two washers (36 and 36.1)
securing bus bar W5 (1 1 ) to circuit breaker
CB2 (34); remove bus bar W5.
2. Remove self-locking nut (37) and washer
(38) securing terminal lug (39) to circuit
breaker CB2 (34); remove terminal lug.
3. Tag and unsolder wires from terminals on
circuit breaker CB2 (34).
4-164
Change 5