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Page Title:
JUNCTION BOX. |
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 TM5-4120-384-14
4-26.
The junction box is located
in
the
upper
left
front
corner
of
the
(See fig. 4-22.)
unit.
Removal.
a.
(1)
Disconnect
power
at
power
source.
(2)
See
and
remove
control
module.
(3) Remove top front cover on F18H-3S AND
F18H-1S
or
top
cover on F18H-3SA and F18H-3SB (para 4-11).
(4)
Remove seven screws
and
lock
washers
and
carefully
slide
junction
box out of unit.
Most maintenance, testing, and inspection of the
junction box and individual components can be done at
The junction box should be supported on
this stage.
a stand or table to avoid damage to wires or
If the complete junction box is to be
connections.
replaced or removed proceed to step (5).
(5) Tag and disconnect individual
wires
and
connectors
of
junction box harness from unit.
(6)
Remove
junction
box.
Inspect.
b.
(1) Inspect for missing or loose attaching hardware, damaged
Replace missing hardware and
parts and excessive corrosion.
Tighten loose hardware and clean or repair parts as
damaged parts.
indicated.
(2) See paragraphs 4-27 through 4-29 for
inspection/testing
of
wiring harness and individual components.
If the junction box
is
damaged
beyond
repair,
c.
Replace.
replace with a new junction box.
d.
Installation.
(1) If wiring harness was disconnected from unit, see the
wiring diagram figure 4-4 and tags and connect wire leads and
Remove tags.
connectors.
(2) Carefully slide junction
box
into
place
and
secure
with
seven screws and lock washers.
Change 2
4-76
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