22-11
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EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
F. Pitch Servo (See Figure 22-113)
(1) Removal - Pitch Servo
(a) Set BAT 1, BAT 2, and AVIONICS switches to OFF positions.
(b) Pull AUTOPILOT circuit breaker.
(c) Remove access panel CF5. (Refer to 06-00)
(d) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Remove
condenser. (Refer to 21-50)
(e) Disconnect pitch servo plug from socket.
Note: Note location of bridle cable clamps on elevator cable to facilitate reinstalla-
tion.
(f) Remove bolts, nuts, and clamps securing bridle cable to elevator cable.
(g) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Remove
screws, washers, and nuts securing fairleads, bridle cable, and elevator cable to fairlead
bracket.
(h) Remove bolts and washers securing pitch servo to mounting bracket and remove pitch
servo from airplane.
(2) Disassembly - Pitch Servo
(a) Remove screws and washers securing capstan cover to capstan.
(b) Remove cable guards.
(c) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Remove
cotter pin, nut, washers, spacer, and bolt securing pulley and cable keeper to mounting
bracket.
(d) Remove cotter pin, nut, and washer securing tension washers to capstan.
(e) Loosen set screw securing bridle cable stop-ball to capstan recess.
(f) Remove stop-ball from capstan recess and unwrap bridle cable from capstan.
(g) Remove screw and washer securing cover to servo motor.
(3) Reassembly - Pitch Servo
(a) Place tension washers on capstan and secure with washer and nut.
(b) Perform Adjustment/Test - Pitch Servo Torque. (Refer to 22-11)
(c) Insert and depress bridle cable stop-ball into capstan recess and tighten set screw.
(d) Serials 22-0002 thru 22-1367: Wrap bridle cable around servo capstan.
1
On servo capstan, position bridle cable stop-ball between 11 o’clock and 1 o’clock
positions (stop-ball at top of capstan), and wrap aft bridle cable 540° counter-clock-
wise.
2
On servo capstan, position bridle cable stop-ball between 11 o’clock and 1 o’clock
positions (stop-ball at top of capstan), and wrap forward bridle cable 180° clockwise.
(e) Serials 22-1368 & subs, 22T-0001 & subs: Wrap bridle cable around servo capstan.
1
On servo capstan, position bridle cable stop-ball at 3 o’clock position (stop-ball at
back of capstan), and wrap long end of bridle cable 660° clockwise.
2
On servo capstan, position bridle cable stop-ball at 3 o’clock position (stop-ball at
back of capstan), and wrap short end of bridle cable 660° counter-clockwise.
Note: Align cable keeper so arm extends through mounting bracket hole but
does not contact pulley or mounting bracket.
(f) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Position
pulley and cable keeper to mounting bracket and secure with bolt, washers, spacer, nut,
and cotter pin.
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