With A/C

1 Heater control valve
2 Fresh air recirculation flap vacuum servo
3 To intake manifold (vacuum supply)
4 Vacuum check valve
5 Temperature regulator flap vacuum servo
- Vacuum applied = temperature regulator flap closed. No air flow to heater core.
- No vacuum = temperature regulator flap open. Air flow through heater core.
6 Vacuum reservoir
7 Vacuum switch for fresh air/recirculatlon flap vacuum servo
8 A/C control head (upper part)
9 A/C control head (lower part)
10 Heat control (temperature) cable
11 Multii-point vacuum hose connector
12 Footwell flap vacuum servo
13 Defroster flap vacuum servo