Flap Jackscrew Removal; Flap Removal; Flap Installation - Thrush Aircraft S2R–T660 Maintenance Manual

stainless steel hinges. A switch located on the aft of the throttle quadrant electrically controls the flap
operation. Movement of the flaps is by a torque tube located below the cockpit floor and rotated by an
electric motor-driven jackscrew. Push rods attached to the arms of the torque tube move the flaps to the
de sired position. The flaps have been completely sealed against chemical spray.

FLAP JACKSCREW REMOVAL

A. Remove left side fuselage cowling under cockpit door and hopper.
B. Remove wing root fairings to gain access to the flap push road and jackscrew attach bolts.
Disconnect each flap from the push rod and allow flap to swing and hang under wing.
C. Disconnect the electrical connections, connecting the micro-switches and motor. Identify the wires
and locations for installation reference.
D. Remove one attach bolt at the motor end, loosen the other bolt slightly and remove the four bolts
connecting the jackscrew to the flap torque tube.
E. Install new flap jackscrew assembly into fuselage and connect with hardware which was removed or
new hardware. NOTE: Rigging must be checked after installation of new jackscrew or pushrods.
Refer to flap rigging.
F. Reconnect the electrical wires and test flap motor for proper operation.
G. Connect pushrods and after flaps are rigged properly ensure that all bolts are tight and wires are tied
off.
H. Reinstall fairings and cowling.

FLAP REMOVAL

A. Disconnect flap push rod at flap. Do not change position of rod end on push rod. (See Figure 7-3)
B. Remove flap hinge bolts.
C. Remove flap from aircraft.

FLAP INSTALLATION

Installation of the flap is the reverse of the removal procedure. In the event push rod length has been
altered, the flap will have to be completely re-rigged.
Effective: 12/17/04
THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
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