If unusual tolerance is found along transmission, replace parts displaying exces-
sive wear.
The aft bellcrank assembly (see fig. C-8) consists of a steel tube (1) with welded
horn assembly (2), attachment for stabilator control shaft (3) and balanced weight
bellcrank (4). Counterweight is located at the end of a prong bolted to the torque
tube and entering tail cone through the tail-frame cutout.
Longitudinal trim control is available in two versions in dependence with the
aircraft configuration. One of them consists in a rocker switch located on the cen-
tral tunnel between the two seats. The second configuration has two switches on
the top of each stick handle. For this configuration it is possible to select the left
or the right controls for operation. For both configuration it is available a trim po-
sition indicator located on the instrument panel. Trim control activates the linear
actuator (5) connected to supports and horn assembly (7). Actuator’s motion is
transmitted to an adjustable push-pull rod (8) through a bellcrank (9).
F
IGURE
C-8
S
TABILATOR AND TRIM TAB CONTROLS
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