Control Cables Installation; Rudder Rigging; Rudder Trim Tab; Balance Cable Rigging - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

Table of Contents

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH

Install the cables in reverse order of the removal procedures.

Check rigging per rigging instructions.

Assure all cables, cable guards and turnbuckles are installed properly and safety

wired. Replace all skins removed for access.

Position the rudder pedals at mid-adjustment position in the adjustment channel.

Center and lock the rudder.

Adjust the turnbuckles in each rudder cable, at fuselage station 175.12, to bring

the rudder pedals approximately 11.00 inches from the back of the hopper.

If the turnbuckles run out of adjustment, relocate adjustment

strap on rudder horn to shorten cable.

Safety-wire the turnbuckles with 0.041 stainless steel wire.

Adjust and lock the rudder stop bolts, located at the base of the rudder post, to

limit the travel of the rudder to 22 (±1) degrees left and right of center. (See

Figure. 7-9)

A fixed-position trim tab is attached to the lower edge of the rudder. An out-of-trim rudder

can be trimmed by bending the metal trim tab. Use forming blocks when bending tab and

do not bend more than 0.50 inch deflection in either direction.

The Thrush incorporates a rudder-aileron balance cable/spring system. The cables are

attached to the rudder pedals and routed out of the cockpit and to the spring which is

attached to the opposite aileron bell crank. Adjustments are accomplished with the

turnbuckles located on each cable. The system is correctly adjusted when the rudder and

ailerons simultaneously align in the neutral position. Ensure there is no contact between

balance springs.

Each elevator is attached to the rear spar of the horizontal stabilizer at three hinge points.

The control stick is connected to the elevators through the use of a bell crank, idler, push

tubes and elevator horn. The right and left elevators are attached to a common elevator

horn. (Fig. 7-10)

Effective: 9/16/05

AIRCRAFT MAINTENANCE MANUAL