Assembly
of
the
Main
Duct
(cont)
y
(
)
•
Next
remove
one
nut
and
washer
from
one
end
of
the
long
metal
threaded
pivot
rod
and
insert
the
rod
into
the
hole
in
the
bushings.
Install
the
lock
washer
and
nut
on
the
pivot
rod
and
tighten.
Note:
Double
p
g
check
that
the
main
duct
will
still
move
freely
vertically
to
ensure
the
bushings
stayed
in
position.
21
