ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
2. Tag and unsolder wires and diode CR7
4. Open circuit breaker cover and remove
(147) from relay K3 (146); remove relay
two screws (22 and 23) and washer (24)
securing circuit breaker to chassis (8);
remove circuit breaker CB1.
(j) Relay K3 replacement.
(f) Circuit breaker CB2 replacement.
1. Prepare and solder tagged wires and
diode CR7 (147) to relay K3 (146).
NOTE
2. Secure relay K3 (146) to chassis (8) with
Discard hardware supplied with new cir-
three screws (148), washers (149), and
cuit breaker except flat washers.
spacers (150).
1, Secure circuit breaker CB2 (34) to chassis
(k) Fault indicators DS1 or DS2 removal.
(8) with two screws (22 and 23) and
washer (24). Close circuit breaker cover.
NOTE
2. Secure terminal lug (39) to circuit breaker
Fault indicators DS1 (44, figure 4-20,
CB2 (34) with self-locking nut (37) and
sheet 3) and DS2 (46) removal is similar,
washer (38).
therefore, only fault indicator DS2 will be
covered.
3. Secure bus bar W5 (11) to circuit breaker
CB2 (34) with self-locking nut (35) and two
1. Tag and unsolder wires connected to fault
washers (36 and 36. 1).
indicator DS2 (46).
4. Solder wires to terminals on circuit
2. Unsolder diodes CR9 (47, figure 4-20,
breaker CB2 (34).
sheet 4) and CR10 (48) from fault indica-
tor DS2 (46, figure 4-20, sheet 3).
(g) Filter FL1 removal.
3. Remove nut (57) and lockwasher (58) se-
1. Remove two screws (12, figure 4-20, sheet
curing fault indicator DS2 (46) to chassis;
2), two washers (13), self-locking nut (15),
remove fault indicator DS2.
and washer (16) securing terminal lug (14)
(1) Fault indicators DS1 and DS2 replacement.
and bus bar W2 (17) to filter FL1 (18);
remove terminal lug and bus bar W2.
2. Remove self-locking nut (9) and washer
(10) securing bus bar W5 (11) to filter
FL1 (18); remove bus bar W5.
3. Remove four screws (20) and washers (21)
Isopropyl alcohol is flammable and gives
securing filter FL1 (18) and gasket (19) to
off harmful vapors. Use only in well-ven-
chassis (8); remove filter FL1 and gasket.
tilated area away from open flames and
sparks. Avoid prolonged or repeated inha-
(h) Filter FL1 replacement.
lation of vapors.
1.
Inspect gasket (19) for darnage and re-
place if required.
NOTE
2. Secure filter FL1 (18) and gasket (19) to
Fault indicator DS1 (44) and DS2 (46)
chassis (8) with four screws 20) and wash-
replacement is similar, therefore, only
ers (21).
fault indicator DS2 will be covered.
3. Secure bus bar W5(11) to filter FL1 (18)
1. Clean shoulder of fault indicator DS2 (46)
with self-locking nut (9) and washer (10).
where it contacts chassis (8) using isopro-
pyl alcohol and clean, lint-free cloth.
Secure bus bar W2 (17) and terminal lug
4.
Clean area on chassis where fault indica-
(14) to filter FL1 (18) with two screws
tor makes contact. Repeat at least three
(12), two washers (13), self-locking nut
times using a clean cloth each time.
(15), and washer (16).
When clean, wipe dry using lint-free
cloth.
(i) Relay K3 removal.
2. Apply adhesive (MIL-A-46146, Type I)
1. Remove three screws (148, figure 4-20,
0.010- to 0.030-inch thick on shoulder
sheet 6), washers (149), and spacers (150)
contact surface of fault indicator DS2
securing relay K3 (146) to chassis (8). Pull
(46); install in chassis (8) within 5 minutes
relay away from chassis far enough to
after applying adhesive.
gain access to wires soldered to relay.
4-165
Change 5
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