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STABILATOR TRIM.
REMOVAL OF FORWARD STABILATOR TRIM ASSEMBLY. (Refer to Figure 27-22.)
1.
To remove the trim control wheel assembly and/or the trim control cables, remove the panel to the aft section of the airplane.
2.
If the aft trim cable is not to be removed, block the cables at the pulleys in the aft section of the fuselage to prevent them from unwrapping from the trim drum. (Refer to Figure 27-21.)
3.
If the trim control wheel and cables are to be removed, loosen or disconnect the cables at the trim cable turnbuckles in the aft section of the fuselage.
4.
To remove the control wheel with drum:
A. Remove the control wheel cover by removing the cover attaching screws.
B. The wheel assembly may be removed from its mounting brackets by removing nut, washer and bolt that secures the wheel between the brackets. Draw the wheel from the brackets. Use caution not to damage trim indicator wire.
C. Unwrap the left cable from the drum.
D. The wheel and drum are joined by a push fit, separate these two items with their center bushing and unwrap the right cable.
E. Tie the cables forward to prevent them from slipping back into the floor tunnel.
5. To remove the trim control cables:
A. Remove the pilot and rear seats if desired.
B. Remove the seat belts attached to the forward floor tunnel by removing attachment nuts, washers and bolts.
C. Remove the heater deflectors from each side of the aft end of the forward floor tunnel by sliding the deflector sideways and releasing the retainer spring.
D. Unfasten the carpet from the aft portion of the forward floor tunnel and lay it forward.
E. Remove the tunnel cover located between the trim control wheel and the spar cover by removing the selector knobs and cover attachment screws.
F. Remove the cable pulleys located in the forward tunnel by removing the cotter pin, washer and clevis pin.
G. Remove the floor panel aft of the main spar by removing the panel attachment screws and seat belt attachments. Lift the panel and remove from airplane.
H. Remove the cable rub blocks located in the floor opening on the aft side of the main spar by removing the block attachment screws.
I. Remove the trim plate located on top of the forward end of the aft floor tunnel.
J. Remove the carpet from the aft floor tunnel.
K. Remove the cover plate from the top of the aft floor tunnel by removing attachment screws.
L. Remove the cable guard from the underside of the trim cable pulleys located in the forward area of the aft floor tunnel by removing a tinnerman nut and withdrawing the cable guard.
M. Remove the cable guard plate from the underside of the pulley cluster located in the aft area of the floor tunnel by removing the plate attachment screws.
N. Remove the cable guard from the cable pulleys in the aft lower section of the fuselage forward of the cable turnbuckles.
O. With the cables disconnected from the trim control wheel, draw the cable(s) through the floor tunnel.
27-30-00 Page 27-49 Issued: April 1, 1997
Figure 27-22. Stabilator Trim Controls
27-30-00
Page 27-50
Issued: April 1, 1997
2D3
INSTALLATION OF FORWARD STABILATOR TRIM ASSEMBLY. (Refer to Figure 27-22.)
1. The trim control wheel with drum may be installed by the following procedure:
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