Aileron Removal; Aileron Installation; Aileron Rigging - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH
bearing hinges and is attached to the aft wing spar at three points. One balance weight is
installed in the outboard leading edge of each aileron to prevent flutter.
The left and right ailerons are not interchangeable. There is
a female locating slot approximately 25 ½ inches from the
counterweight leading edge that must align with a male
located tab in the aileron bay.
The aileron control is driven by a single push rod from the control stick torque tube to a
vertical bell crank at the right side of the fuselage (See Figure 7-2). A short push rod
connects the bell crank to a vertical idler in the left side of the fuselage. In each wing, the
inboard push tubes connect between the bell crank and idler in the fuselage to the aft side
of a bell crank near the inboard end of the aileron. From the forward side of this bell
crank, the outboard push tube connects to the forward arm of the drive bell crank located
at the aileron mid span. The short arm of the drive bell crank is connected to a push rod
that drives the aileron. The ailerons are also connected to the rudder controls by spring-
loaded cables that enable the ailerons to be activated in conjunction with the rudder. This
provides a safety factor. In case the aileron system becomes inoperative, the rudder
system will lift the aileron. (Fig. 7-3)
A. Disconnect push rod at aileron. Do not change position of rod end on push rod.
B. Remove aileron hinge bolts.
C. Remove aileron from aircraft.
Installation of the aileron is the reverse of the removal procedure. In the event push rod
length has been altered, streamline trailing edge of opposite aileron with trailing edge of
wing and flap and secure with a temporary lock. Adjust push rod length to align attaching
bolt hole with hole in aileron hinge fitting, when aileron is in neutral position. Recheck

aileron rigging.

Assure the ailerons are attached and the system push tubes are assembled, except for
the two lateral push rods in the fuselage. Ensure that flaps have been rigged. Rig the
ailerons as follows:
A. Clamp the ailerons at the trailing edge of the wing tip in the neutral position.
Ailerons are in neutral when ailerons are 1/8" below flap trailing edge.
B. Adjust the length of the push rod from aileron outboard wing bell crank until
inboard wing bell crank is perpendicular to the rear spar, both sides. This can be
checked through the inspection holes just forward of the rear spar.
Effective: 05/05/04
AIRCRAFT MAINTENANCE MANUAL
* NOTE *

AILERON REMOVAL

AILERON INSTALLATION

AILERON RIGGING
7-5