Flap Rigging; Rudder; Rudder Removal - Thrush Aircraft S2R–T660 Maintenance Manual

FLAP RIGGING

A. With the master switch "ON," fully retract the flaps (up flaps) with the flap switch.
B. Disconnect the flap push – pull rods at the torque tube arms.
C. Hold a straight edge on the wing lower surface at wing station 49.0 (approximately 24 inches
outboard of the fuselage side). In the properly rigged flap "up" position, the straight edge should
contact the lower surface of the wing, front spar, the flap trailing edge and the lower surfaces.
D. Adjust the flap push-pull rods to the proper length and connect them to the torque tube arms.
E. Shorten the length of the maximum travel limit bolt located on the right side of the fuselage adjacent
to the torque tube.
F. With the flap switch, lower the flaps to the fully extended position.
G. Using a propeller protractor or equivalent instrument to measure the flap angular travel, adjust the
down micro-switch located on the vertical shaft adjacent to the jackscrew to achieve 15 (+/-1)
degrees. Retract and extend the flaps after each adjustment to verify proper adjustment.
H. With the flaps in the fully extended position, adjust the maximum travel stop bolt so that there is a
0.060" to 0.080" gap between the bolt head and the stop pad.
I. Retract the flaps with flap switch and turn the master switch "OFF."
J. With flaps full up, adjust the mechanical up stop until contact with upper surface of flap, then tighten
one full turn.
K. Tighten and torque all hardware to the specifications called out in Section II of this manual.

RUDDER

The metal-covered rudder is attached to the vertical stabilizer at three hinge points. The rudder control
cable is connected directly from the rudder horn to the rudder pedal adjustment channels. The left and right
rudder cables route from the adjustment channels aft around pulleys where they pass through the fuselage
side skins and attach to adjustment straps on the rudder horn. A spring-loaded balance cable is routed
between the pedal adjusting channels and forward around pivoted
pulleys located on the hopper rear wall. The rudder controls are interconnected by springs to the aileron
system so that a wing may be lifted with rudder alone. This feature provides a convenience during cross-
country flight and is an added safety feature in case the aileron system becomes inoperative. (Fig. 7-6)

RUDDER REMOVAL

A. Disconnect rudder cables from rudder horn.
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THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
Effective: 01/10/05