Cessna T188C - Page 199

NOTE
and
reconnect
all
lines and
hoses
to valve.
1.
Inspect
installation
and
install
cowling.
If
the
valve
attached
to the
diaphragm
is
stuck
in the
bore
of the
body,
grasp
the
11A-44.
INSTALLATION.
center
nut,
rotate
and
lift at
the
same
a. Secure
the
fuel
manifold
to
the
crankcase
with
time
to
work
gently
out
of the
body.
two
crankcase
bolts.
b.
Connect
the
fuel
lines
and
the
six
fuel
injection
CAUTION lines. Inspect completed installation.
Do not
attempt
to remove
needle
or
spring
llA-45.
FUEL
DISCHARGE
NOZZLES.
From
the
from
inside
plunger
valve.
Removal
of
fuel
manifold
valve,
individual,
identical
size
and
these
items
from
the
valve
will
disturb
the
length
fuel
lines
carry
metered
fuel
to the
fuel
dis-
calibration
of
the valve.
charge
nozzles
located
in
the cylinder
heads.
The
outlet
of each
nozzle
is
directed
into
the
intake
port
d.
Using
clean
gasoline,
flush
out
the
chamber
be-
of
each
cylinder.
The
nozzle
body
contains
a drilled
low
the screen.
central
passage
with a counterbore
at each end.
The
e. Flush
above
the screen
and
inside
the center
lower
end
is used
as a chamber
for
fuel-air
mixture
bore
making
sure
that outlet
passages
are
open.
Use
before
the spray
leaves
the
nozzle.
The upper
bore
only
a gentle stream
of compressed
air to remove
contains
an orifice for calibrating
the nozzles.
Near
dust
and dirt
and to dry.
the
top, radial
holes connect
the upper
counterbore
with
the outside
of the
nozzle
body
for air
admission.
CAUTION
These
radial holes
enter
the counterbore
above the
orifice
and
draw
outside
air
through
a cylindrical
The
filter
screen
is a tight
fit in
the body
and
screen
fitted
over the
nozzle
body.
This screen
pre-
may
be damaged
if removal
is attempted.
It
vents
dirt and
foreign
material
from
entering
the
should
be removed
only if
a new
screen
is
to
nozzle.
A
press-fit
shield
is
mounted
on
the nozzle
be
installed,
body and
extends
over the
greater part
of the filter
screen,
leaving
a small
opening
at the
bottom
of the
f.
Clean
diaphragm,
valve
and
top cover
in the
shield.
This
provides
an air
bleed
into the
nozzle
same
manner.
Be sure
the
vent
hole
in the
top
cover
which
aids
in vaporizing
the fuel
by
breaking
the high
is open
and
clean.
vacuum
in the
intake
manifold
at
idle
rpm
and keeps
g.
Carefully
replace
diaphragm
and
valve.
Check
the
fuel
lines
filled.
The nozzles
are
calibrated
in
that
valve
works
freely
in body
bore.
several
ranges.
All nozzles
furnished
for
one engine
h.
Position
diaphragm
so
that horizontal
hole
in
are
the same
range
and
are identified
by
a number
plunger
valve
is 90
degrees
from
the
fuel
inlet
port
and
a suffix
letter
stamped
on
the
flat
portion
of
the
in the
valve
body.
nozzle
body.
When
replacing
a fuel
discharge
nozzle
i.
Place
upper
spring
in position
on
diaphragm.
be sure
it
is
of the
same
calibrated
range
as
the
rest
j.
Place
cover
in
position
so that
vent
hole
in
of
the
nozzles
in the
engine.
When
a complete
set
of
cover
is
90
degrees
from
inlet
port
in
valve
body.
nozzles
is
being
installed,
the
number
must
be the
Install
cover
attaching
screws
and tighten
to 20±1
same
as
the
one removed,
but
the suffix
letters
may
lb-in.
Install
safety
wire
on
cover
screws,
be
different,
as long
as they
are
the
same
for all
k.
Install
fuel
manifold
valve
assembly
on
engine
nozzles
being
installed
on
a particular
engine.
11A-15