ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
6. Remove screw (36) and lockwasher (37)
A7Q6 and thermal pad. Do not discon-
securing terminal lugs (38, 39 and 40) to
nect wires from transistor, Allow transis-
power inverter assembly A6 (26); remove
tor to hang down with wires connected to
terminal lugs.
battery charger circuit card assembly A7
(23).
7. Loosen seven captive screws (27) securing
power inverter assembly (26) and thermal
4. Remove two screws (15), four washers (16
pad (25) to chassis (22); remove power
and 17), two shouldered washers (18), and
inverter assembly and thermal pad.
two terminal lugs (19), with other end of
capacitor A7C3 (14) connected to one of
(b) Replacement.
the terminal lugs, securing transistor
1. Install power inverter assembly A6 (26)
A7Q7 (20) and thermal pad (21) to chassis
and thermal pad (25) into chassis (22) and
(22); remove transistor, capacitor C3, and
secure with seven captive screws (27).
thermal pad. Do not disconnect wires
from transistor. Allow transistor to hang
2. Secure terminal lugs (38, 39, and 40) to
down with wires connected to battery
power inverter assembly A6 (26) with
charger circuit card assembly A7 (23).
screw (36) and lockwasher (37).
5.
Loosen four captive screws (24) securing
3.
Secure terminal lug (34) to power in-
battery charger circuit card assembly A7
verter assembly A6 (26) with screw (35).
(23) to chassis (22). Pull battery charger
4.
Secure terminal lug (32) to power in-
circuit card assembly A7 and transistors
verter assembly A6 (26) with screw (33),
far enough out of chassis to gain access to
jackscrews (5) on connector A7P1 (6).
5.
Secure terminal lugs (28 and 29) to power
inverter assembly A6 (26) with screw (31)
6.
Loosen two jackscrews (5) securing con-
and lockwasher (30).
nector A7P1 (6) to battery charger circuit
card assembly A7 (23) connector; discon-
6. Mate connector A6P1 (41) with power
nect connectors,
inverter assembly A6 (26) connector and
secure with two jackscrews (42).
7.
Remove battery charger circuit card as-
sembly A7 (23) `from chassis (22).
7. Secure side cover (3, figure 4-19, sheet 1)
and gasket (4) to chassis (22, figure 4-19,
(b) Replacement.
sheet 2) with 19 captive screws (1, figure
1. Slide battery charger circuit card assem-
bly A7 (23) part way into chassis (22) and
screws to 9 inch-pounds using procedures
mate connector A7P1 (6) with battery
described in paragraph 3-11.
charger circuit card assembly A7 connec-
(7) Battery charger circuit card assembly A 7. Re-
tor and secure with two jackscrews (5).
move and replace battery charger circuit card assembly
2. Secure battery charger circuit card assem-
A7 (23, figure 4-19, sheet 2) as follows:
bly A7 (23) to chassis (22) with four cap-
(a) Removal.
tive screws (24).
1. Loosen 19 captive screws (1, figure 4-19,
sheet 1) and washers (2) securing side
cover (3) and gasket (4) to chassis (22
When installing transistors A7Q6 and
gasket.
A7Q7, make sure they are isolated from
the chassis by centering on the shouldered
2. Loosen two jackscrews (42) securing con-
washer. Check with ohmmeter to be sure.
nector A6P1 (41) to power inverter as-
sembly A6 (26) connector; disconnect
3. Secure transistor A7Q7 (20) and thermal
connectors.
ad (21) to chassis (22) with two screws
(15), four washers (16 and 17), two shoul-
3 . Remove two screws (7), four washers (8
dered washers (18), and two terminal lugs
and 9), two terminal lugs (10), with one
(19), with one end of capacitor A7C3 (14)
end of capacitor A7C3 (14) connected to
attached to one of the terminal lugs.
one of the terminal lugs, and two shoul-
dered washers (11) securing transistor
4. Secure transistor A7Q6 (12) and thermal
A7Q6 (12) and thermal pad (13) to chassis
ad (13) to chassis (22) with two screws
(22); remove transistor A7Q6 and thermal
(7), four washers (8 and 9), two terminal
pad (13) to chassis (22); remove transistor
lugs (10), with other end of capacitor
4-162
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