Cessna 177 SERIES Service Manual

AIRCRAFT
FLAP MOTOR AND
SYNCHRONIZING
TRANSMISSION
DRIVE
PULLEY
BELLCRANK
PUSH-PULL TUBE7
ACTUATOR
N
LEFT WING RIGHT
WING I
OUTBOABOARDBOA
PUSH-PULL
ROD
PUSH-PULL
ROD
VIEWED
FROM
ABOVE
Figure 7-4.
Flap System
Schematic
12. Mount an
inclinometer on one flap and adjust
18. Adjust flaps UP operating switch (28) in
the
to 0
°
.
slotted holes to 0. 062" clearance between
switch
roller
and cam (30) when
the DOWN operating
switch
NOTE
has just
opened in the
10
°
and 20
°
position.
An inclinometer
for measuring
control sur-
NOTE
face travel is available from the Cessna
Service Parts Center.
Refer to figure 6-5.
Flap
travel on UP cycle may
deviate a maxi-
mum of 40
from indicated
position.
13. Run flaps
DOWN and adjust
DOWN-LIMIT
switch (18) to operate and shut-off motor at the 19. Complete an operational check as outlined in |
30
°
+2°-0
°
position.
paragraph 7-3.
14. (Refer to
figure 7-1.) Operate
control
lever
20. Check all
rod ends and clevis
ends for suffi-
(21) and
run flaps to the full UP
position.
cient thread engagement,
all jam nuts
are tight,
15. Disconnect
follow-up
control (19)
at switch
safety turnbuckles
and reinstall
all items removed
for
mounting
arm (24).
access.
16. Without
moving the control
lever (21),
move
21. Flight
test aircraft and
check that follow-up
arm (24) until cam
(30) is centered between
switches control
does not cause automatic
cycling of flaps.
If
(26 and 28).
Ensure switches are centered
in their
cycling occurs, readjust
operating switches as
neces-
respective adjustment slots prior to centering cam sary per steps 17 and 18.
(30).
b. BEGINNING
WITH
AIRCRAFT SERIAL
17701634
17. Adjust flaps DOWN
operating switch (26)
in AND ALL
AIRCRAFT MODIFIED
IN ACCORDANCE
the slotted holes
until the roller just
clears cam (30) WITH
SK177-17 AND SK177-18.
(Refer to figure
7-2.)
and secure switch.
This adjustment
should provide
flaps down
operation to 10
°
±
2
°
and 20
° =2°
. If not,
CAUTION
readjust switch
(26) as necessary.
Do not use
aircraft
power to
operate
the flap
NOTE
motor
until the limit-switches (17 and
18)
have been adjusted
or damage may occur
due
The flaps
must NEVER exceed
10
°
when
the
to overtravel.
Separate
the electrical
quick-
control
lever (21) is moved
from the
0
°
to
disconnect
(15) at the
flap motor and
connect
10
°
position.
7-8 Change 3

Cessna 177 SERIES Specifications

General

Manufacturer	Cessna
Engine Type	Piston
Wingspan	35 ft 6 in (10.82 m)
Seating Capacity	4
Number Built	4, 295
Engine	Lycoming O-360
Horsepower	180 hp
Maximum Takeoff Weight	2, 500 lb (1, 134 kg)