CESSNA®
MODEL 525 (SERIALS -0685 AND -0800 AND ON)
MAINTENANCE MANUAL
(b) Remove the cable guard pins from the rudder autopilot servo gear box.
(c) Record how the cable is installed on the capstan drum.
(d) Remove the cable from the capstan drum.
1
If the servo gearbox capstan has retaining clips, the swaged ball end of the cable can
be removed by sliding the ball past the clip while pressing the retaining clip with a lat
screwdriver or similar tool. Refer to, Figure 402.
B.
Install the Rudder Autopilot Servo Gear Box (Mount) and Cables. (Refer to Figure 401).
(1) If the rudder autopilot servo gear box has been replaced install the cables as follows:
(a) Install cables on the rudder autopilot servo gear box capstan drum as recorded.
CAUTION:
Make sure the ball is fully seated in the capstan.
(b) Install the cable guard pins in the positions A, C, F, and J on the rudder autopilot servo
gear box.
(c) Put the capstan cover in its position on the cable guard pins.
(d) Install but do not tighten the capstan cover screws and washers.
(e) Start with two opposite screws, torque all the screws from 8.00 to 12.00 inch-pounds (0.90
N-m to 1.35 N-m). Refer to Chapter 20, Torque Data - Maintenance Practices.
(2) Put the rudder autopilot servo gear box and the cables in their position at the rudder autopilot
servo gear box bracket assembly.
(a) Start with two opposite bolts, torque all the bolts from 25.00 to 40.00 inch-pounds (2.82
N-m to 4.51 N-m). Refer to Chapter 20, Torque Data - Maintenance Practices.
(3) For Airplanes -0685 and -0800 thru -0870 that have
NOT
incorporated SB525-27-24, do the
steps that follow:
(a) Put the lower rudder autopilot cable in the clamp block.
(b) Make sure the clamp block is aligned at the mark on the left aft rudder cable.
NOTE:
14.50 +0.50 or -0.50 Inches (368.30 +12.70 or -12.70 mm) from the center of
the rudder autopilot servo gear box.
(c) Tighten the clamp block nuts from 12.00 to 15.00 inch-pounds (1.35 N-m to 1.69 N-m).
Refer to Chapter 20, Torque Data - Maintenance Practices.
(d) Install the rudder upper autopilot cable to the turnbuckle that connects the upper rudder
autopilot cable to the upper aft rudder autopilot cable.
(4) For Airplanes -0685 and -0800 thru -0870 Incorporating SB525-27-24 and airplanes -0871 and
On, do the steps that follow:
(a) Install the bolt, washer, nut and cotter pin to the fork end terminal that connects the left aft
rudder cable to the rudder lower autopilot cable and left middle rudder cable.
(b) Install the rudder upper autopilot cable to the turnbuckle that connects the upper rudder
autopilot cable to the upper aft rudder autopilot cable.
(5) Install the rudder autopilot servo actuator. Refer to , Garmin GSA 80 Rudder Autopilot Servo
Actuator (Motor) Removal/Installation in this section.
(6) Tighten the rudder servo cable turnbuckle to the correct cable tension. Refer to Chapter 27,
Rudder and Tab System - Adjustment/Test, Figure 502.
(7) Install the clips on the turnbuckle. Refer to Chapter 20, Safetying - Maintenance Practices.
(8) Engage the AFCS circuit breaker on the right circuit breaker panel in the cockpit.
(9) If the rudder autopilot servo gear box and the rudder autopilot servo actuator were replaced new
as an assembly, do the G3000 Baseline Software/Coniguration Installation. Refer to Chapter
34, Garmin Integrated Avionics System - Adjustment/Test.
NOTE:
For more data applicable to the Model 525 G3000 software and coniguration
uploading procedures, refer to Section 6 and Section 8 of the Garmin G3000
Integrated Avionics System Line Maintenance Manual, P/N 190-01579-00, found in
the Introduction, Supplier Publication List.
(10) Do the Garmin GFC 700 AFCS Operational Test, Yaw Axis Check. Refer to Chapter 22, Garmin
GFC 700 AFCS - Adjustment/Test.
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© TEXTRON AVIATION INC.
Nov 22/2017
ICA-525-27-00005
Form 2261 Rev 1
