Install guide

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