Pontiac FIREBIRD 1972 Service Manual page 42

HEATING AND VENTILATION 1-21
Fig. 1-20 B Series Heater Duct Installation
REMOVE AND REPLACE
-
A AND G SERIES
13. Remove defroster nozzle to heater case screw.
Straighten defroster nozzle retaining tabs (Fig. 1-20)
and remove defroster nozzle.
1. Disconnect battery.
14. To replace, reverse removal procedure. Refer to Fig.
1-20 for defroster nozzle attachment. Check cable
adjustment after assembly and adjust cables if neces-
sary.
REMOVE AND REPLACE
-
B SERIES (WITH A/C)
1. Perform steps 1 thru 7 of procedure for defroster
nozzle replacement on non-air conditioned models.
2. Disconnect temperature cable at heater case.
3. Remove glove box and cold air duct.
4. Remove lower I.P. bolts (at extreme ends of I.P.
asm.).
5. Place rags or fender pad on steering column, discon-
nect speedometer cable, tilt I.P. pad toward rear of
car and allow pad to rest on steering column.
6. Remove defroster nozzle screw at heater case.
Straighten nozzle retaining tabs (Fig. 1-20) and
remove nozzle.
7.
To replace, reverse removal procedure. Check tem-
perature cable operation and adjust cable if neces-
sary.
2. Disconnect heater cables at heater case.
3. Remove defroster duct retaining screw at heater case.
4. Lower steering column from instrument panel.
5. Remove instrument panel pad attaching nuts and
bolts and position pad out onto steering column (For
instrument panel pad procedure see Section 12 of
Service Manual).
6. On A Series, bend (4) defroster duct retaining tabs
and remove duct. On G Series, remove (4) defroster
duct retaining screws from instrument panel pad and
remove duct.
7. To replace reverse removal procedure, check heater
cable operation and adjust if necessary. For installa-
tion, see.Figs. 1-21 (G Series) and 1-22 (A Series).
REMOVE AND REPLACE
-
F SERIES (WITHOUT
AIR CONDITIONING)
1. Disconnect battery.
2. Remove lower (at steering column) and upper (at
cluster) instrument panel trim.