Cessna 1969-1976 172 Series Service Manual page 275

7 .
Insulator
Detail
D
1. Cabin Skin
2. Heat Sink 8. Transistor
3 . Rheostat 9. Screw ROTATED 180'
4. Set Screw 10. Washer
5. Knob (Compass and Instrument) 11. Mounting Bracket
6. Knob (Radio)
BEGINNING WITH 17265685
AND 1976 F172
BEGINNING WITH AIRCRAFT SERIALS
17259224 AND F17200755
Figure 16-9A. Transistorized Dimming
Change 3 16-27