TM 9-4120-407-14
Over tightening the retaining hardware can cause binding of the
assembly and affect operation of the equipment.
NOTE
Install the following components onto the screw in the order given.
(g) Install spacer (9), new spring washer (10), arm (11) assembly, a second spring washer, a second
spacer, flat washer (7), and new self locking nut (6). Push screw (8) through bracket (22) holes
as needed while installing the components. Tighten only as needed to begin compressing the
spring washers.
Over tightening the retaining hardware can cause binding of the
assembly and affect operation of the equipment.
( h ) Install screw (3), bushing (4), arm (5), flat washer (2), and new self locking nut (1). Tighten
only as needed to secure the components and still allow free movement of the arm.
(2) Knob Assembly.
NOTE
The following procedures are typical for both knob assemblies.
( a ) Install information plate (3) Figure 3-26 and two new drive screws (2).
(b) Install setscrew (1).
e. Installation
(1)
Rod, Arm, and Worm Gear.
(a) Install Rod. Arm. and Worm Gear.
1 Install grommet (10) Figure 3-24.
2 Install the rod, arm, and worm gear assembly (8) through the fresh air damper panel
opening and insert the rod into the bracket (9) hole. Lower the rod, arm, and worm gear
assembly and insert the rod through the grommet (10).
3 Align rod, arm, and worm gear assembly (8) mounting holes and install four screws (6), flat
washers (7), and new self locking nuts (5).
4 Install knob (4) and tighten setscrew (3).
5 Install extension rod (2) and tighten setscrew (1).
3-77
