TM 9-6115-668-131.Install FREQUENCY ADJUST R4 (9) potentiometer and serrated lock washer (11) on rear of frontpanel (4), and install threaded element (12) on FREQUENCY ADJUST R4 (9).Turn the shaft of FREQUENCY ADJUST R4 potentiometers (9) allthe way counterclockwise.Rotate dial (14) with rotary knob (15) all the way counterclockwise.Make sure stop plate (13) is installed in the correct position.2.3.4.Slide stop plate (13) on shaft of FREQUENCY ADJUST R4 (9) potentiometer so the lower tab ofstop plate (13) fits into the hole in front panel (4).Install dial (14) and rotary knob (15) on shaft of FREQUENCY ADJUST R4 potentiometer (9).Secure rotary knob (15) on FREQUENCY ADJUST R4 potentiometer (9) by tightening socket headscrew (16).5.Noting correct labeling and position, solder cables (8) on terminals (10) of FREQUENCY ADJUSTR4 (9) potentiometer.6.Solder resistor R4A (7) on terminals (10) of FREQUENCY ADJUST R4 potentiometer (9).7.Stow prop (5) and close front panel (4).8.Close flap (2).4 - 1 2 9
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