CHAPTER 27
PAGE 28
PAGE DATE: 17. March 2014
MAINTENANCE MANUAL EXTRA 330LX
27-30-02 Trim Tab
Removal/Installation
1 Loosen Bowden cables. If a replacement is necessary order
new cable.
2 Disconnect the safety cotter pins and remove the hinge pins.
3 Install in reverse sequence of removal.
Rigging
Refer to Figure 19.
1 Secure the rear control stick in neutral position (See Figure
18).
2 Adjust trim to slightly below middle position. 6th LED on
trim position indicator illuminates (1).
3 Check trim lever (4) is in neutral position (angle of 11°,
(tolerance ±2°) to the firewall plane or 79° to upper long-
erons). If it is not, proceed as follows:
a Remove the trim servo rod (2) from the trim servo (3) and
the trim lever (4) by removing the clevis pins with cotter
pins and washers.
b Loosen the counternut from the adjustable rod end and screw
the rod end out or in as necessary to adjust the fuselage
bellcrank in neutral position (default measurement is 147
mm). Ensure rod end is screwed in for min. 10 mm.
c Fasten the counternut.
d Renew locking varnish.
e Reconnect the rod end. Use new cotter pins.
4 Bring the trim tab (8) in 0°-position (upper surfaces of el-
evator (7) and trim tab (8) are in the same plane) by replac-
ing the linkage bolts (5 and/or 9).
5 Trim to extreme positions and check if trim tab travel is up
35° and down 27° (tolerance ±2°). If it is not, check free
travel of the trim lever (4) and Bowden cable (6).
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