Rockwell Commander 112 - Aileron and Flap Rigging(Alternate Method)

SECTION VII
FLIGHT
CONTROLS
MAINTENANCE MANUAL
ROCKWELL
COMMANDER
112/B/TC/TCA
35 DEGREE WING FLAP/
GEAR WARNING SWITCH
(LIMIT SWITCH NUMBER 3)
25 DEGREE WING FLAP/
GEAR WARNING SWITCH
(LIMIT SWITCH NUMBER 2)
o DEGREE WING FLAP /
GEAR WARNING
SWITCH
(LIMIT SWITCH NUMBER 1)'
WING FLAP MOTOR
Figure 7-5. Wing Flap Warning Switch
X 27 2
e. Lower flaps to fully extended position using
propeller protractor, 35 (:t 2) degrees.
f. Adjust switch number three so jackscrew
collar has just actuated switch lever. Tighten set-
screw.
g. Position flaps 10 (± 2) degrees down using
protractor.
h. Adjust flap position sender to obtain a reading
on flap pOSition indicator in instrument panel. Read-
ing should be within two degrees of true flap pOSition.
i. Position flaps at 22-1/2 (± 2-1/2) degrees
using flap pOSition indicator.
j. Retract landing gear.
k. Adjust switch number two so jackscrew
collar has just actuated switch lever (gear warning
I
bell or horn sounds). Tighten setscrew.
1. Position flaps to 35 degrees. Allow actuator
to shutoff flap motor. Check gear warning bell or'
horn continues to sound through flap range of 22-1/2
(:t 2-1/2) degrees to full down position.
m. Check flap position indicator reading. Indi-
cator should read 35 (:t 2) degrees.
n. Position flaps to zero degree. Check gear
• warning bell or horn stops sounding at pOSition indi-
cator readings between 25 degrees and 20 degrees.
o. Recheck indicator zero degree reading.
p. Recheck 22-1/2 (:I; 2-1/2) degrees indicator
readings.
q. Lower landing gear.
r· Make sure all jam nuts are tightened and all
switches are secure, then replace all parts removed
for access.
AILERON AND FLAP RIGGING(ALTERNATE METHOD)
This alternate method of rigging ailerons and flaps
is provided in the event problems are encountered
7-10
while rigging by the standard method. The ailerons
and flaps will have to be rigged simultaneously when
using this procedure.
a. Place propeller protractor 12 inches aft of
firewall on bottom surface of aircraft at centerline
(see Figure 7-11). Adjust protractor to zero degrees.
Be certain protractor is not rotated 180 degrees.
b. Set flaps in fully retracted position and adjust
push-pull rods to obtain a reading of 11-1/2 (± 1)
degrees.
c. Set protractor on outboard edge of flap and
reset index to zero. This Will also be zero or neu-
tral position for ailerons.
d. Place protractor on aileron surface 1.50
inches out from inboard edge of aileron normal to
trailing edge.
e. Loosen aileron control cables and place
ground adjustable aileron tabes) in center position.
f. Set aileron bellcrank so aileron push-pull
rod is directly under bellcrank pivot point, see
Figure 7-11. Clamp or hold bellcrank in this posi-
tion.
g.
Adjust aileron push-pull rod to pOSition ail-
eron 9 (± 2) degrees down from neutral.
h. Adjust aileron stop to obtain 25 (1" 2) degrees
up position on aileron for Model 112 with Serial num-I
bers through 222 and 20 to 27 degrees up pOSition for
aircraft with Serial numbers 223 and subsequent.
i. Repeat steps f. thru h. for opposite aileron.
j. Clamp a rigging bar to aileron control wheels
to neutralize control wheels.
k. Clamp ailerons to flaps.
NO'.
Use spacer blocks on flaps if needed.
1. Assure control column chain is located as
depicted in Figure 7-4.
m. Adjust turnbuckle, located aft of main spar,
to obtain correct tension on each cable (refer to
Figure 7-14 for correct tension).
m. Adjust turnbuckle, located aft of the main spar,
to obtain correct tension on each cable (refer to
Figure 7-14 for correct tension).
All cables should be tensiomid evenly
to prevent damage at clamping pOints.
Cables should be tensioned within five
pounds of
each other.
n. Remove any clamps, holding fixtures or rigging
bars.
o. Assure all turnbuckle safety clips are installed,
all cables and cable guards are properly installed
and all checknuts are tightened.
p. Turn control wheels clockWise to deflect right
aileron up and left aileron down. Check right aileron
Change 2
Copyright Commander Owners Group 2013 All Rights Reserved
**unofficial copy**