Thrush Aircraft S2R-T660, Maintenance Manual

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THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
AILERONS
An all-metal aileron is installed outboard of each wing flap. Each aileron operates on 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.
* NOTE *
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 bellcrank at
the right side of the fuselage. A short push rod connects the bellcrank to a vertical idler in the left side of the
fuselage. In each wing, the inboard push tubes connect between the bellcrank and idler in the fuselage to
the aft side of a bellcrank near the inboard end of the aileron. From the forward side of this bellcrank, the
outboard push tube connects to the forward arm of the drive bellcrank located at the aileron mid span. The
short arm of the drive bellcrank 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. 7-2)
AILERON REMOVAL
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.
AILERON INSTALLATION
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 bolthole with hole in aileron hinge fitting, when
aileron is in neutral position. Recheck aileron rigging.
AILERON RIGGING
Effective: 12/17/04
7 - 4