G Series Programmer; Programmer Wheel - Pontiac FIREBIRD 1972 Service Manual

1972 PONTIAC SERVICE MANUAL
2. Remove vacuum motor retaining screws and power
spring. Position motor mechanism to disengage mix
door operating arm (programmer output shaft).
3. Disconnect electrical terminals and vacuum hoses at
transducer. Identify connections for reassembly.
4. Remove (3) retaining screws and (2) retaining clips
and remove mix door arm.
5. T o replace, reverse removal procedure. See Figs. 1 B-
59 and 1B-60.
BLOWER RESISTOR CIRCUIT BOARD
1. Remove blower resistor wiper arm assembly using
correct procedure.
2. Remove (3) retaining screws and blower resistor cir-
cuit board. Take care that single ball bearing is kept
located in bearing cup on circuit board.
3. Remove (3) electrical terminals from programmer
electrical connector body.
4. To replace, reverse removal procedure. See Figs. 1B-
60 and 1B-61.
G SERIES PROGRAMMER
REMOVE AND REPLACE
1. Disconnect battery.
2. Remove cold air duct and glove compartment (except
with console).
3. Remove programmer link screw (scribe marks for
reinstallation). If new programmer is installed or new
parts placed in programmer, adjust door link.
BLOWER RESISTOR
CIRCUIT BOARD
I
MIX DOOR
OPERATING ARM
1
Fig. 1B-60 Mix Door Operating Arm
Fig. 1 B-61 Blower Resistor Circuit Board
4. Remove vacuum harness connector from program-
mer.
5. Disconnect three electrical connectors.
6. Remove programmer retaining screws (Fig. 1B-46).
7. Pull programmer carefully rearward so as not to
break heat sensor.
8. To replace, reverse removal procedure.
PROGRAMMER WHEEL
Fig. 1 8 - 6 2 Programmer Amplifier