Install guide

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