Landing And Taxi Lights (Dual Cowl Mounted) Removal And Installation; Navigation Lights Removal And Installation; Flashing Beacon Light; Instrument Lighting - Cessna 177 SERIES Service Manual

a. Remove the lamp for access to adjustment ly 45 flashes per minute. Beginning with 17701410 a
screws. (See figure 16-6). 1. 5 ohm resistor is installed in the system to elimi-
b. Thru 1971 Models adjustment is accomplished nate a pulsing effect on the cabin lighting and am-
by turning the screws until desired setting is obtained.
meter.
Beginning with 1972 Models washers must be added
on adjustment screws to change the setting. 16-64. REMOVAL AND INSTALLATION. For re-
moval and installation of the flashing beacon light and
NOTE flasher assembly, refer to figure 16-8.
A maximum of two washers may be used 16-65.
ANTI-COLLISION STROBE LIGHTS.
to adjust setting.
16-66. DESCRIPTION. A white strobe light is in-
{i
~CA_~UTION~
stalled on each wing tip. Lights are vibration resis-
tant and operate on the principle of a capacitor dis-
Should removal of the cowling be desired to
charge into a xenon tube, producing an extremely
make adjustments, ensure the landing and
high intensity flash. Energy issupplied to the strobe
taxi light wiring is disconnected before re- lights from a power supply. The power supply is
moving the bottom cowling.
mounted inside the left wing at station 175. 50 thru
serial 17701773. Beginning with serial 17701773 each
c. Remove cowling as outlined in Section 11. strobe light is equipped with its own power supply
mounted on the wing tip rib.
16-58A. LANDING AND TAXI LIGHTS (DUAL COWL
MOUNTED) ( OPTIONAL BEGINNING WITH 1974 16-67.
REMOVAL AND INSTALLATION. Refer to
MODELS).
figure 16-7 as a guide for removal and installation
of the anti-collision strobe light components.
16-58B. DESCRIPTION. The landing and taxi lights
are mounted in the lower nose cowl. The left hand
WARNING
lamp is used for taxi and the right hand for landing.
A split rocker switch mounted on the instrument This anti-collision system is a high volt-
panel controls the lights, one side for taxi and one age device.
Do not remove or touch tube
or both for landing. assembly while in operation. Wait at least
5 minutes after turning off power before
16-58C. REMOVAL AND INSTALLATION. (Refer to
starting work.
figure 16-6A).
a. Remove engine cowl (Refer to Section 11). 16-67A. OPERATIONAL REQUIREMENTS.
b. Remove screws (8) and remove light assembly.
Note position of washers when removing taxi light
for reinstallation.
c. Remove screws (9) and remove lamp. The capacitors in the strobe light power
d. Install new lamp and reverse the preceding steps
supplies must be reformed if not used for
for reinstallation.
a period of six (6) months. The following
procedure must be used.
16-59. NAVIGATION LIGHTS.
Connect the power supply, red wire to plus, black
16-60. DESCRIPTION. The navigation lights are
to ground to 6 volt DC source. Do Not connect strobe
located on each wing tip and the top edge of the ver- tube. Turn on 6 volt supply. Note current draw after
tical fin. The lights are controlled by a single one minute. If less than 1 ampere, continue operation
switch located on the instrument panel.
for 24 hours. Turn off DC power source. Then con-
nect to the proper voltage, 12 volt. Connect tube to
16-61. REMOVAL AND INSTALLATION. For re- output of strobe power supply and allow to operate,
moval and installation of navigation lights, refer to flashing, for 15 minutes. Remove strobe tube. Oper-
figure 16-7. ating power supply at 12 volts, note the current drain
after one minute. If less than 0. 5 amperes, operate
16-62. FLASHING BEACON LIGHT. for 6 hours. If current draw is greater than 0. 5 am-
peres, reject the unit.
16-63. DESCRIPTION. The flashing beacon light is
attached to a ABS plastic mounting on the vertical fin 16-68. INSTRUMENT LIGHTING.
tip. The flashing beacon is an iodine vapor lamp elec-
trically switched by a solid-state flasher assembly. 16-69. DESCRIPTION. The instrument panel light-
Thru 17701773 the flasher assembly is mounted under ing is fabricated in two separate sections. The lower
the fin tip, 17701774 thru 17701810 the flasher assem-
two-thirds of the instrument panel is illuminated by
bly is located in the tailcone on the left hand side just
an overhead light console mounted immediately for-
forward of the stabilator, beginning with 17701811 the
ward of the cabin ventilation system. The lighting
flasher assembly is located in the bottom of the tail- for the upper one-third of the instrument panel is
cone at the aft end. The switching frequency of the provided by four small lights located in the instru-
flasher assembly operates the beacon at approximate- ment panel glare shield. The intensity of the instru-
16-24 Change 6