21-10 Ventilation
21-11 Nose Vent
Refer to R66 Illustrated Parts Catalog (IPC) Figures 21-1.
A. Removal
1. Remove hardware securing avionics face to F033-1 lower console and remove face.
Unscrew and remove radios. Remove hardware securing radio trays to lower console
and remove trays. Disconnect OAT wiring.
2. Refer to Figure 21-1. Remove screws attaching upper console to lower console and
hinge console aft. Protect instrument face with foam support or equivalent.
3. Remove and discard cotter pin securing clevis pin and C522-5 (air vent) control inner
wire to C062-1 vent box assembly channel. Remove and retain clevis pin.
4. Remove hardware securing AN742-3 clamp and control housing to vent box angle.
5. Cut and discard ty-rap securing control housing to lower console angle.
6. Remove screws securing C365-13 mount assembly to lower console and remove
control. As required, remove MS35489-4 grommet and clamp; remove jam nut
& lockwashers securing mount assembly to control housing, and remove mount
assembly.
B. Installation
1. Refer to Figure 21-1. As required, install C365-12 mount assembly, lockwashers,
and jam nut on C522-5 (air vent) control housing, but do not tighten jam nut. Install
AN742-3 clamp and (new, as required) MS35489-4 grommet on control housing.
2. Position control in lower console and install screws securing mount assembly to
lower console. Verify security.
3. Rotate control knob until horizontal within 15° when locked; tighten jam nut against
mount assembly. Verify security.
4. Route control inner wire through C062-1 vent box assembly channel. Adjust grommet
position as required, and install clevis pin through channel and control inner wire.
Install cotter pin. Verify security.
5. Install clamp and hardware securing clamp and control housing to vent box angle.
6. Install ty-rap around control housing through hole in lower console angle. Cinch ty-
rap until snug without over-tightening, and trim tip flush with head.
7. Actuate vent and adjust clamp position as required for proper vent operation. Verify
control housing does not slip through clamp when opening and closing vent. Verify
clearance under knob is 0.03-0.10 inch with knob fully depressed.
8. Close and secure upper console. Connect OAT wiring. Install radio trays and
hardware securing trays to lower console. Verify security. Install and secure radios.
Install avionics face and hardware securing face to lower console.
SEP 2012 R66 Maintenance Manual Chapter 21 Environment Control Page 21.3
To Next Page
Loading...