Cessna T188C - Page 355

MODEL
188 &
T188
SERIES
SERVICE
MANUAL
16-71.
INSTRUMENT
LIGHTING,
the switch
controls
the right
hand light
and the left
hand
side controls
the left hand
light. A second
16-72.
DESCRIPTION.
Instrument
lighting
is pro-
rocker
type
switch
mounted
on the
panel
controls
vided by
13 lamps
mounted
within
the
structure
of the
power
to the
lamps
on the
top position
and
beginning
crash
pad.
Nine
of
the lamps
furnish
lighting
to the
with
18801425
the
lower
position
controls
power
to
instrument
panel through
slots
in the
bottom
of the
the automatic
flagman.
Lamps
may be
turned
on in
crash
pad.
The other
four
lamps
are directed
up-
the
retracted
position
and
extended
to any
degree
ward
to light
the instrument
cluster.
Glare
is ellmi-
desired.
Conversion
from spray
lights
to wing
tip
nated
by
a thermo-formed
plastic
shield
mounted
turning
lights
is controlled
by
a switch
on the
control
atop
the
crash
pad.
On aircraft
serial
188-0318
and
stick
grip.
on, a light
was
added
above the
elevator
trim
tab con-
trol
wheel.
The intensity
of
the instrument
and
clus-
16-82.
REMOVAL
AND INSTALLATION.
ter lights
is controlled
by individual
rheostats
mount-
a. To remove
lamp
extend the
light approximately
ed
on the instrument panel.
60
degrees.
b. Remove
lamp
retainer ring
and remove lamp
16-73.
REMOVAL
AND INSTALLATION.
(See
from
inner canopy
and disconnect
the
wires from
figure
16-8.)
the lamp.
a.
Thru
aircraft
serial
18800832
to gain
access
to
c.
To remove
light assembly,
support
assembly
the
instrument
lamp
socket
assemblies,
reach
through
and
remove
screws
securing
assembly
to
retainer
the lightening holes in back of the instrument panel. band.
Beginning
with
serial
18800833
the crash
pad
is hinged.
d. Lower
the
light assembly
from wing
and
place
b.
Pull
light
socket
from
the mounting
support.
on
a stand
of suitable
height.
c.
Remove
the defective
bulb and
replace.
e.
Tag and
remove
the wires
from
the terminal
block.
16-74. TRANSISTORIZED
LIGHT
DIMMING.
f.
Remove the
two screws securing
the power
unit
to the housing.
16-75. DESCRIPTION..
A
remotely located
two-
g. To install
reverse the
preceding steps.
circuit
transistorized
dimming assembly
is installed
in
the aircraft
beginning
with
1972 models.
One
cir-
16-83.
HOPPER
QUANTITY
LIGHT.
cuit controls the radio dial lights, lower instrument
lights,
and
trim light.
The other
circuit
controls the
16-84.
DESCRIPTION.
A quantity
light
may be
map
light,
upper instrument
lights
and compass
light.
mounted
on the
hopper
to provide
illumination
of the
Power
is
supplied
from
the bus
bar through
a circuit
contents
of
the hopper
so the
pilot
can determine
the
breaker
to the
off-on
switch,
then to
the dimming
amount
of chemical
remaining
during
night spraying
assembly.
Two rheostats
on
the instruments
panel
operation.
The light
is controlled
by the
interior
control
the output
of the
dimming
assembly
and
in
light
switch
and
a dimming
rheostat
located
on
the
turn control
the
lighting.
left side
of the
instrument
panel.
16-76. REMOVAL AND
INSTALLATION. Figure
16-85. COMPASS
LIGHT.
16-8
may be used
as a guide for
removal and
in-
stallation. 16-86. DESCRIPTION. The compass light is con-
tained within the individual unit. The intensity of the
16-77. WING TIP TURNING LIGHTS. compass light is controlled by the instrument cluster
rheostat
mounted
on the
instrument panel.
16-78.
DESCRIPTION.
The wing tip
turning lights
are mounted in a fiber glass
housing attached to the
16-87. STALL WARNING
SYSTEM.
lower
side
of each
wing
tip. Lamps
are
24-volt,
250
watt and controlled
by a switch on the control
stick 16-88. DESCRIPTION.
The stall warning
circuit is
grip.
comprised of
a warning horn and an actuating
switch.
The
switch is installed
in the leading
edge of the
left
16-79. REMOVAL
AND INSTALLATION.
(See
wing and is actuated
by airflow
over the surface
of
figure 16-7.) the wing. The switch will close as a stall condition
a. Remove
screws securing shroud to wing
tip and is approached,
actuating the warning horn.
The stall
remove
shroud.
warning
unit should
actuate the stall
warning horn
b. Remove screws
securing
wiring to lamp
contacts. approximately
five
to ten miles
per hour above
the
c.
Remove screws from lamp retainer
ring and re- airplane
stall speed. Install the lip
of the warning
move lamp.
unit approximately
one-sixteenth
of an inch
below the
d. Install
new lamp and reassembly.
centerline of the
wing skin cutout.
Test fly
the air-
16-80 FORWARD FACING SPRAY LIGHTS
craft to
determine if the unit actuates
the warning
16-80.
FORWARD
FACING
SPRAY
LIGHTS.
horn
at the
desired
speed.
If the
unit actuates
the
6-81. DECRIPTION
The
forward
facing
spray
warning horn
at a speed
in excess
of ten miles
per
16-81. DESCRIPTION. The forward facing spray mounting screws
lights consists of a retractable
600 watt, 24-volt
and move stall speed. If
the unit actuates the horn
lamp mounted on
the under side of each wing
at sta- ive miles per hour
below stall speed, loosen
the
tion 196.50. The lamps
are extended or retracted
mounting screws
and move the unit up.
by a split-rocker
type
switch
located
on the
left hand
side of
the instrument
panel.
The
right hand
side
of
16-51