Chevrolet 10 Series 1967, Service Manual

Page: 54 / 605

HEATER AND AIR CONDITIONING 1A-26
40-60 SERIES
10-30 SERIES
Fig . 35 - Condenser and Receiver Dehydrator
EXPANSION VALVE
Removal
1. Purge the system.
2. Loosen the clamp retaining the high pressure line
to the bracket next to the expansion valve.
3. Disconnect the capillary bulb from the evaporator
outlet pipe. Disconnect the equalizer line from the
P.O.A. Cap the P.O.A. connector.
4. Disconnect the expansion valve inlet and outlet con­
nections and cap the lines.
5. Remove expansion valve to bracket mounting screw
and remove expansion valve.
Installation
1. Mount the expansion valve to the bracket.
2. Connect the inlet and outlet connections. Tighten
the inlet pipe clamp.
3. Connect the equalizer line to the P.O.A. and mount
the capillary bulb to the evaporator outlet pipe.
4. Evacuate and charge the system. Check perform­
ance.
P.O.A. VALVE
Removal
1. Purge the system.
2.
Remove evaporator oil bleed line and expansion valve
equalizer line. Cap the connections.
3. Remove retaining clamp screw and loosen P.O.A.
valve outlet pipe clamp mounting screw.
4. Remove P.O.A. valve inlet and outlet connections
and remove P.O.A. valve. Cap the open tubes.
5. Remove clamp from P.O.A. valve.
Installation
1. Assemble clamp on P.O.A. valve and connect inlet
and outlet connections.
2.
Secure P.O.A. valve clamp and outlet line clamp.
3. Connect the evaporator oil bleed line and the ex­
pansion valve equalizing line to the P.O.A. valve.
4. Evacuate and charge the system.
BLOWER ASSEMBLY
10-60 Series
R e m o v a l
1. Disconnect battery ground cable.
2.
(10-30 Series) Support the right front of the hood
in the fully raised position.
3. (10-30 Series) Carefully scribe the hood and fender
locations of the right hood hinge and remove the
hinge.
4. Unclip the blower wire at the blower flange terminal
and note or mark the motor flange position in rela­
tion to the blower case. Disconnect the rubber
cooling tube to the motor.
5. Remove the blower assembly mounting screws.
6
. Remove the blower assembly (pry the flange away
from the case carefully if the sealer acts as an
adhesive). (40-60 Series—turn the motor until its
flange clears the hood hinge.)
7. Remove the nut attaching the blower wheel to the
motor shaft and separate the assembly.
Installation
1. Assemble the blower wheel to the motor with the
open end of the blower away from the motor.
2.
Install the assembly to the blower case, connect
F ig . 3 6 - Evaporator and Blower Assembly
CHEVROLET TRUCK SERVICE MANUAL