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TM 9-4120-389-14
Preliminary procedure: 1. Remove top cover (See para. 4-14).
2. Remove junction box (See para. 4-46).
a. Inspection/Test
(1) Conduct continuity check on each pin to ground (connector shell). Infinity reading on all tests
must be shown. Any reading other than infinity means that connector is shorted and must be replaced.
(2) Check connector J3 for general condition and loose or missing contacts. Replace defective
connector.
(3) Check individual wires for loose solder connections, and cut or broken
wires.
(4) Check connection on TB1 for loose or missing hardware. Tighten or replace
as needed.
(5) Check individual wires for loose or damaged terminal lugs. Repair as
needed.
(6) Check ground connections E5 and E3 for loose or missing hardware. Tighten
and replace as needed.
(7) See wiring diagram (FO-i) and continuity test individual wires. '
(8) See para. 4-36, electrical wiring repair general and table 4-3, wire list.
(9) Repair and replace wires that do not meetcontinuity requirements.
b. Removal
(1) Remove two flat washers, two nuts and screw from E3 on casing. Tag leads.
(2) Cut cable ties.
(3) Remove four screws, lockwashers, and nuts that secure connector J3 (with cover) and gasket to
casing.
(4) Remove grommet on bulkhead.
(5) Remove connector J3, cover and gasket.
(6) Remove sleeve.
(7) Pull bare leads through grommet hole and out of unit.
(8) Remove grommet.
4-172
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