Pontiac tempest 1968 Service Manual page 76

A U T O M A T I C TEMPERATURE CONTROL
1B-3
NOTE; C O N N E C T O R MUST I E
INSTALLED TO FIT TIGHTLY O N
V A C U U M SWITCH PORTS.
Fig. 1B-4 Details Automatic Temperature Control
2. Remove vacuum hoses from vacuum valve and
disengage door link by removing screw.
3. Remove three screws from programmer frame
and lift unit out.
DISASSEMBLY
Remove cover from programmer by removing five
screws and carefully lift away cover from p r o ­
grammer without bending fingers on finger block
assembly.
AMPLIFIER REPLACEMENT
2. Unsolder seven leads (two orange, one light
green, one dark green, one brown, one gray and one
red lead).
The nine leads (two orange, two red, two green,
one light green, one dark green, one brown) must be
disconnected (Fig. 1B-8). Remove two circuit board
mounting screws. Lift board carefully straight up
and off finger block mounting post.
3. Install new board by reversing removal p r o ­
cedure and secure with two mounting screws making
certain that ground lug is under the mounting screw
nearest wheel. Note that circuit board comes with a
new finger block and lead cable attached.
1. Remove finger block out of way.
4. Solder previously disconnected leads according