Pontiac FIREBIRD 1972 Service Manual page 164

CUSTOM AIR CONDITIONING 1A-105
PLENUM VAC. CONTROL
IAPHRAGM (ACTUATOR)
SHROUD VEN
AlC CONTROL
ASM.
RECRIC.
DIAPHRAGM
(ACTUATOR)
VIEW D
-
5. Separate diaphragm from bracket (3 screws).
6. To replace, reverse removal procedure.
I
-
Fig. 1A-127 X Series A/C Vacuum Hose Routing
TEMPERATURE CABLE
REMOVE A N D REPLACE
-
EXCEPT X SERIES
1. Remove cold air duct (except B Series).
C A M ASSEMBLY-TEMPERATURE DOOR
REMOVE A N D REPLACE
1. Remove glove compartment on all except G Series
with console.
2. Scribe alignment marks on heater case for cam place-
ment.
3. Remove control cable.
4. Remove cam hold down screws.
5. Remove cam.
6. To replace reverse removal procedure.
7.
Adjust cable.
2. Remove glove compartment and disconnect cable at
heater case.
3. Disconnect cable at control panel. On
B
Series
remove control panel from I.P. with cable attached,
then disconnect cable.
4. To replace reverse removal procedure, check operat-
ion and adjust if necessary.
A/C HEATER .CABLES
REMOVE A N D REPLACE
-
X SERIES
To replace the A/C heater cables (air cable, defroster
cable and temperature cable) refer to Figs. 1A-131 and
1A-132 for cable routing. Perform steps 1 through 3 of
control panel procedure and disconnect cable from con-
trol assembly. To disconnect heater case end of the defros-
ter cable, it may be necessary to remove the heater core
and case assembly from the car.