Pontiac tempest 1968 Service Manual page 17

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1968 P O N T I A C S E R V I C E MANUAL
R O U T E VACUUM HOSE B E T W E E N
DEFROSTER N O Z Z E L AND DASH MAT
CONNECT VACUUM HOSE WITH GREEN
STRIPE TO AIR I N L E T DIA.
CONNECT VACUUM HOSE WITH B L U E
STRIPE TO DEFROSTER D I A P H R A G M
DIAPHRAGM
C A B L E A S S ' Y MUST L A Y B E T W E E N -
DIAPHRAGM AND T A B ON MOUNTING
B R A C K E T AS SHOWN
F i g . 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 L P . 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.