18) Elevator Trim Tab Actuator Wear

1. Check Trim Tab Actuator (item 43) p/n 1432004-6 for proper operation. Replace if necessary. Check Screw (item 120) p/n 1432004-4 for wear/movement inside Actuator, if excessive wear/movement replace Actuator. Check Sprocket (item 119) for wear/movement inside Actuator and on Actuator shaft, if excessive wear/movement, replace Actuator.

2. Check Trim Tab Actuator Screw assembly (item 120) p/n 1432004-4 and Bearing (item 121) p/n PN3A, if Bearing is worn/sized replace bearing. If Screw assembly is worn allowing Bearing to move/rotate inside the Screw assembly then replace the Screw assembly.

3. Check Actuator Screw Rub blocks (item 11) p/n 1432018-89. If worn, replace.

Items:

• 43 Actuator p/n 1432004-6

• 120 Screw p/n 1432004-4

• 121 Bearing p/n PN3A

• 11 Rub Block p/n 1432018-89