4.
Install the fairing and the access panel to the aft section of the fuselage.
RUDDER TRIM CONTROLS.
REMOVAL OF FORWARD RUDDER TRIM CONTROLS. (Refer to Figure 27-16.)
1. To remove the trim control wheel assembly and/ or trim control cables:
A. Remove the panel to the aft section of the fuselage.
27-20-00 Page 27-32 Issued: April 1, 1997
RUDDER PEDAL NEUTRAL POSITION AFT OF VERTICAL 19° + 1°, - 0° Figure 27-12. Clamping Rudder Pedals Figure 27-13. Rudder Rigging Tool NOTE CABLE TENSION APPLIES ONLY TO AIRPLANES WITH-OUT AUTOPILOT BRIDLE CABLES ATTACHED. REFER TO APPROPRIATE AUTOPILOT SERVICE MANUAL FOR CABLE TENSION WHEN ATTACHING BRIDLE CABLE. CABLE TENSION RUDDER TRAVELS
MAIN = 40 LBS. ± 5 LBS.
TRIM = 10 LBS. ± 1 LB.
(SEE NOTE)
RUDDER TRAVELS
A = 37° + 1° - 0°
RUDDER TAB TRAVELS
B = 26° ± 2°
Figure 27-14. Rudder Rigging
27-20-00
Page 27-33
Issued: April 1, 1997
2C9
B. If the aft trim cable is not being removed, block the cables aft of the turnbuckles to prevent the cables from unwrapping at the trim barrel in the fin. (Refer to Figures 27-16 and 27-21.)
2. To remove the trim control wheel:
A. Loosen the cables at the turnbuckle.
B. Remove the trim cover assembly by removing the cover attaching screws.
C. Remove the nut, washers and bolt that secures the trim wheel assembly between its mounting bracket. Draw the wheel from the brackets. Use caution not to damage the trim indicator wire.
D. Unwrap the lower cable from the drum.
E. The wheel and drum are joined by three screws. Remove screws and separate these two items and unwrap the upper cable.
F. Tie the cables forward to prevent them from slipping back into the floor tunnel.
3. To remove trim control wheel and forward cables:
A. Block the aft cables aft of the turnbuckles.
B. Remove the tunnel cover in the aft area of the cabin by removing the carpet and heater duct over the tunnel and the cover attachment screws.
C. Remove the floor panel located directly aft of the main spar by removing the seats, seat belt attachments and screws securing the panel. Remove the panel from the airplane.
D. Remove the trim cover assembly to gain access to the trim wheel mounting hardware.
E. Disconnect the turnbuckles and remove the guard plate/pin at the pulley cluster.
F. Remove the nut, washers, and bolt securing the rudder trim control wheel and drum assembly to its mounting bracket and remove the complete assembly with cables. Use caution not to damage the indicator wire.
27-20-00 Page 27-34 Issued: April 1, 1997
INSTALLATION OF FORWARD RUDDER TRIM CONTROLS. (Refer to Figure 27-16.)
1. To install the trim control wheel with drum:
A. Wrap the left cable on the trim drum by inserting the swaged ball of the cable in the slot provided in the upper side of the drum which mates with the control wheel. Looking at this side, proceed to wrap eleven turns of cable in a clockwise direction.
B. Attach the trim control wheel to the cable drum by aligning the long lug of the drum with the long slot of the wheel and securing the two pieces together with three screws.
C. Wrap the right cable on the drum by inserting the swaged ball of the cable into the slot provided in the flanged side (lower) of the drum. Looking at this side, proceed to wrap three and a half turns of cable in a clockwise direction.
D. Lubricate and install the bushing in the lower side of the drum and the bearing on the upper side of the trim control wheel assembly.
E. Align the trim control cables and position the control wheel assembly between its mounting brackets. Ascertain that the trim indicator wire is positioned in the spiraled slot of the wheel with no binding on the end. Install the retainer bolt from the upper side, along with the washer and secure with washer and nut from below.
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