1-2
1968
PONTIAC
SERVICE
MANUAL
ROUTE
VACUUM
HOSE BETWEEN
DEFROSTER
NOZZEL
AND
DASH
MAT
CONNECT VACUUM HOSE WITH GREEN
STRIPE
TO AIR
INLET
DIA.
CONNECT VACUUM HOSE WITH BLUE
STRIPE
TO
DEFROSTER DIAPHRAGM
DIAPHRAGM
CABLE
ASS'Y
MUST
LAY
BETWEEN-
DIAPHRAGM
AND TAB ON
MOUNTING
BRACKET
AS
SHOWN
Fig.
1-1
Passenger
Compartment Details—Pontiac
Reach
behind instrument panel and remove control
panel.
2. Remove temperature control cable at heater
control switch.
3.
Detach heater wire harness from temperature
switch and
select
switch.
4. Remove vacuum
hoses
from
select
switch.
5. Remove control panel lamp.
6.
Install
by reversing the above.
7. Adjust temperature control cable.
FIREBIRD
1. Remove instrument panel
trim
plate (Fig. 1-3).
2. Remove control panel retaining screws.
3.
Move panel
rearward.
4. Remove fan switch connector, light and cables.
5. Remove panel.
6. To install, reverse removal procedure.
SELECT
AND
VACUUM
VALVE
SWITCH
REPLACEMENT
(Fig. 1-4)
TEMPEST
1. Remove screws retaining heater control panel
to instrument panel and brace (Fig. 1-2).
2. Remove blower
speed
switch connector and light
connector.
3.
Drop panel from dash area and remove 3
screws and 2 clips retaining control cables.
4. To replace, reverse procedure, making sure
that LP. wire harness retainer clip is secured under
upper attaching screw.
PONTIAC
1. Remove two 1/4" hex screws from the switch
mounting bracket.
2. Around one strand of the
dial
cord, place a
paper clip
between
the switch mounting bracket and
the back-plate of the escutcheon.
CAUTION:
Dial cord is
spring-loaded
and cord
will
vanish
into
the escutcheon if
paper
clip is not
used.
3.
Remove
dial
cord from pulley on switch shaft
and
remove switch.
5.
Check
operation and adjustment of cables.
4. Reassembly is the reverse of disassembly.
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