Chevrolet 10 Series 1970, Service Manual

Page: 65 / 671

HEATER AND AIR CONDITIONING 1A-35
T O RELAY
T O RESISTOR
U N IT
RELAY
C O M P R E S S O R
C LU TCH S W IT C H
B LO W ER S W IT C H
VIEW A
F ig . 4 4 —W irin g Harness
COMPRESSOR CLUTCH SWITCH (Fig. 4 4 )
Removal
1. D isconnect w irin g harness at co m p ressor clutch
switch.
2. R em ove two mounting screw s and rem o ve switch.
Installation
1. P la c e switch in position and d riv e the two mounting
screw s.
2. Connect w irin g harness to switch.
BLOWER RESISTOR UNIT
Rem oval (Fig. 4 5 )
1. R em ove the sc re w attaching the flo o r outlet duct
(above the heater outlet) to the fir e w a ll.
2. R em ove the screw s attaching the distribu tor to the
h eater case, slide the d istribu tor downward out of
r e a r slid e and let it r e s t on the flo o r panel.
3. Unplug the re s is to r unit connector.
4. R em ove the r e s is to r unit retaining screw s. R em ove
the unit.
Installation
1. P la c e the replacem en t unit in position and in stall
mounting screw s.
2. Connect the r e s is to r connector.
3. P o s itio n the dash outlet a ir distribu tor against the
h eater case, in sert the fo rw a rd lip into the retaining
clip , and in stall the retaining screw s.
4. Mount the flo o r outlet duct to the fir e w a ll with the
attaching screw .
KICK PANEL AIR VALVE
Rem oval (Fig. 4 6 )
1. Disconnect vacuum hose from actuator.
2. Disconnect v a lv e return spring.
3. R em ove actuator bracket mounting screw s.
CHEVROLET TRUCK SERVICE MANUAL