TM
9-4931-436-14&P
(1) Remove panel assembly (refer
(2) Remove three screws (44),
three flat washers (36), and three hex
(2) Disconnect J9, J10, Jll, J12,
nuts (35) securing door assembly (45)
J7, J8, J6, J5, and J15 from PWB A2 (25).
to front panel (34), battery box gasket
(3) Remove two screws (1) and two
(48), and battery case assembly (49).
flat washers (2) securing retainer bar
Door Assembly Replacement (fig.
ad.
C-2).
assembly (19) to two standoffs (20).
(4) Remove two standoffs (20) and
(1) Apply sealing compound (MIL-S-
two flat washers (2) from PWB A2.
8802, CLA-) under screw heads prior to
(5) Carefully fold back retainer
installation.
bar assembly. Ensure that cables
(2) Apply primer (MIL-S-22473,
secured to top of retainer bar assembly
grade T) and locking compound (MIL-S-
22473, grade C) to threads of all
are not damaged.
screws.
(6) Remove output logic PWB (21),
(3) Install door assembly (45) on
microprocessor logic PWB assembly (22),
front panel (34). Secure to front
timing Logic PWB assembly (23), and
panel: battery box gasket (48) and
input logic PWB assembly (24) from
battery case assembly (49) with three
connectors on PWB A2.
(7) Remove four screws (1) and
screws (44), three flat washers (36),
and three hex nuts (35). Torque to
four flat washers (2) securing PWB A2
50-60 in.-oz.
to standoffs. Remove PWB A2.
ab. Digital Motherboard (A2) Assembly
(4) Replace panel assembly (refer
Replacement (fig. C-1).
ae.
(1) Apply primer (MIL-S-22473,
Single Battery PWB Removal (fig.
grade T) and locking compound (MIL-S-
C-2).
22473, grade C) to threads of all
(1) Remove panel assembly (refer
screws.
(2) Install FWB A2 (25) on stand-
(2) Use a grounded soldering iron
offs (20). Secure with four flat
(25 watts). Unsolder and tag two wires
washers (2) and four screws (1). Torque
from single battery PWB (52).
to 6-8 in.-lb.
(3) Remove eight screws (53), 16
(3) Install two flat washers (2)
flat washers (2), and eight hex nuts
and two standoffs (20) on PWB A2.
(50) securing single battery PWB (52),
Torque to 6-8 in.-lb.
cable clamps (71), and PWB gasket (51)
(4) Install output logic PWB (21),
to battery case assembly (49).
microprocessor logic PWB (22), timing
af. Single Battery PWB Replacement
Logic PWB (23), and input logic PWB
(24) in connectors on PWB A2.
(1) Apply primer (MZL-S-22473,
(5) Connect J9, J10, Jll, J12, J7,
grade T) and locking compound (MIL-S-
J8, J6, J5, and J15 to PWB A2.
22473, grade C) to threads of all
(6) Apply primer (MIL-S-22473,
screws.
grade T) and locking compound (MIL-S-
(2) Install single battery PWB
22473, grade C) to threads of all
(52), cable clamps (71), and PWB gasket
screws.
(51) on battery case assembly (49).
(7) Install retainer bar assembly
Secure with eight screws (53), 16 flat
(19) on standoffs (20). Secure with
washers (2), and eight hex nuts (50).
two flat washers (2) and two screws (1).
Torque to 6-8 in.-lb.
Torque to 6-8 in.-Lb.
(3) Refer to figure 5-1. Use a
(8) Replace panel assembly (refer
grounded soldering iron (25 watts).
Solder two wires to single battery PWB.
ac. Door Assembly Removal (fig. C-2).
(1) Remove panel assembly (refer
6-5
