Pontiac FIREBIRD 1972 Service Manual page 35

1-14 1972 PONTIAC SERVICE MANUAL
2. Hold air door crank on heater. case in a closed posi-
tion (crank rotated full clockwise when viewed from
above).
3. While holding air control door in this position, adjust
turnbuckle (Fig. 1-12) to move lever against end of
slot in control panel. Then turn turnbuckle in oppo-
site direction to move control lever 1/16" to 1/8"
away from end of slot if eased out of detent.
4. Move lever to DEFROST position, then back to
OFF.
5. Lever must have slight spring back if not quite en-
gaged in detent and must remain in detent when lever
is moved full travel.
DEFROST CABLE
The defrost cable is not adjustable.
F SERIES
Cable adjustments are to be made with cables routed
smoothly (free of sharp kinks or bends) and securely con-
nected at both ends.
TEMPERATURE CABLE
1. Place heater control temperature lever at full cold
(full left).
2. Adjust temperatu cable turnbuckle, Fig. 1-13, until
-' F
temperature door is felt to seat in housing (heater
case).
3. Move temperature lever full right and back to full
left. Door should be heard hitting its seat.
4. If door did not seat or if lever did not go full travel,
repeat steps 2 and 3 until cable is properly adjusted.
BLOWER (FAN)
SPEED SWITCH
,
BUSHING
AIR-FAN CONTROL
ARM
RETAINING
R
CABLE
Fig. 1-1 5 Heater Control Panel
-
X Series