Pontiac firebird 1968 - Page 21

1-6
1968 PONTIAC SERVICE MANUAL
2. Disconnect cable at heater case (Fig. 1-3).
NOTE: It may be necessary to use a small
mirror to see cable retaining clip.
3. Remove trim plate and control retaining screws.
4. Move control rearward and disconnect cable.
5. To replace, reverse removal procedure.
6. Check operation.
DEFROSTER CONTROL CABLE—REPLACEMENT
REMOVE AND REPLACE
TEMPEST
1. Remove defroster control cable from heater
core and case (Fig. 1-2).
2. Remove cable from control.
3. Replace by reversing removal procedure. No
adjustment is necessary.
FIREBIRD
1. Disconnect cable from pivot on heater case
(Fig. 1-3).
2. Remove trim plate and control panel retaining
screws.
3. Disconnect cable at control panel.
4. To replace, reverse removal procedure.
5. Check for operation.
DEFROSTER DIAPHRAGM AND HOSE
REMOVE AND REPLACE
PONTIAC
1. Remove blue vacuum supply hose from dia-
phragm (Fig. 1-6).
2. Remove heater outlet.
3. Remove diaphragm retaining screws from below.
4. To replace, reverse removal procedure.
AIR DIAPHRAGM AND HOSE
REMOVE AND REPLACE
PONTIAC
1. Remove green supply hose (Fig. 1-6).
2. Remove diaphragm retaining screws and spring.
3. Remove diaphragm.
4. To replace, reverse removal procedure.
VACUUM SUPPLY HOSE
REMOVE AND REPLACE
PONTIAC
1. Disconnect supply hose from carburetor.
2. Pull through grommet in dash to inside of car.
3. Disconnect hose from control panel.
4. To replace, reverse removal procedure.
BLOWER MOTOR, IMPELLER AND/OR INLET
DUCT—REMOVE AND REPLACE
PONTIAC
1. Remove hood hinge to fender retaining bolts
(Fig. 1-7).
2. Prop hood and rest hinge on plenum.
3. Remove blower motor or duct retaining screws
as desired.
NOTE: If removing duct drill two (2) one inch
holes in fender skirt for removal of outboard duct
retaining screws.
4. Remove motor electrical lead.
5. Remove motor or duct.
6. To replace, reverse removal procedure and
plug holes with one inch rubber grommet.
TEMPEST
1. Remove battery and tray (Fig. 1-8)
2. Remove fender skirt.
3. Remove blower feed wire.
4. Remove blower motor or duct retaining screws
as desired.
5. Remove motor or duct as desired.
6. To install, reverse removal procedure using
care to reseal duct if removed.