Cessna 1969-1976 172 Series Service Manual page 126

4
FWD
FLAP MOTOR AND
TRANSMISSIQN
DRIVE PULLEY
FLAP MOTOR
ACTUATING
TUBE
PULL ROD PUSHr PULL ROD
-TURNBUCKLES
TO LEFT
W I N G FLAP
V I E W E D F R O M A B O V E
TO RIGHT
W I N G FLAP
Figure 7-4. Flap System Schematic
transmission (4) by hand to
its
shortest length (flaps
full up position). Loosen setscrew (19) securing ac-
tuating tube (6) to nut and ball assembly so that it will
not move, hold RIGHT flap i n the full U P position and
adjust actuating tube (6) IN o r OUT as necessary to
align with attachment hole in drive pulley (9). Tight-
en setscrew (19) and secure tube to drive pulley with
bolt (18).
h. THRU AIRCRAFT SERIALS 17259904 AND F172-
00804 WHEN MODIFIED IN ACCORDANCE WITH SK-
150-37 AND WHEN NOT MODIFIED IN ACCORDANCE
WITH FIGURE 7-2, SHEET 3. (Refer to figure 7-2,
sheet 2.) Operate flap motor until actuating tube (6)
is IN to
its
shortest length (flaps full up position).
Hold RIGHT flap i n the full U P position and check ac-
tuating tube (6) to drive pulley (9) attachment holes
for alignment. Operate flap motor toward the DOWN
position until bolt (18) can be installed freely. Loosen
setscrew (19) and rotate nut and ball assembly (20)
IN
against transmission (4). Tighten setscrew (19)
and bolt (18).
59905, F17200805 AND ALL AIRCRAFT MODIFIED
(Refer to figure 7-2, sheets 2 and 3 . ) Screw actu-
ating tube (6) IN toward transmission (4) by hand to
.12*. 05 inches between switch actuating collar (30)
and transmission
as illustrated in figure 7-2, VIEW
A-A. Loosen setscrew (19) securing actuating tube
(6) to switch actuating collar (30), hold actuating
collar to maintain . 1 2 i . 05", hole RIGHT flap in the
full U P position and adjust actuating tube (6) IN
o r
OUT
as necessary to align with attachment hole i n
drive pulley (9). Tighten setscrew (19) in accordance
with procedures outlined in the following note and
I
secure actuating tube to drive pulley with bolt (18).
i.
BEGINNING WITH AIRCRAFT SERIALS 172-
IN ACCORDANCE WITH FIGURE 7-2, SHEET 3.
NOTE
Thru Aircraft Serials 17262444 and F1721225:
Tighten setscrew (19). Aircraft Serials
1'262445 thru 17263156 and F1721226 thru
F1721234: Apply grade CV sealant to set-
screw (19) threads and torque to 45 lb-in.
Beginning with Aircraft Serials 17263157
and F1721235: Apply grade CV sealant to
setscrew (19) threads and torque to 60
lb-in.
If actuating tube
(6) is too long to allow attach-
ment to drive pulley after completion of steps
proceed to step "j.
' I
l l g l l ,
llhll and
l l i l l ,
j .
Disconnect push-pull rod (10)
at
drive pulley (9),
then connect actuating tube (6) to drive pulley,
k. Manually hold RIGHT flap in full U P position
and readjust push-pull rod (10) to align with attach-
ment hole in drive pulley. Connect push-pull rod
and tighten locknuts or castellated nuts and install
cotter pins.
I
NOTE
The right flap and actuator must be correctly
rigged before cables and left flap can be rig-
ged.
1. With flaps i n full U P position, loosen setscrew
(27) and slide up-limit switch adjustment block (28)
on support (31) to operate switch (29) and shut-off
electrical power to motor
at
this position. Tighten
setscrew (27).
m. Manually hold L E F T flap full UP and connect
control cables
at turnbuckles (index 6, figure 7- 1).
Remove reference tags previously installed in step
7-10 Change 2