Evaporator Core; Evaporator Case Left Half - Pontiac Grand Prix Service Manual

1A-30 1969
PONTIAC SERVICE MANUAL
RIGHT EVAPORATOR
EVAPORATOR DRAIN
CASE HALF
Fig.
1A-48
Typical Evaporator Core and Case
Installation
EVAPORATOR CORE
ALL
-
REMOVE AND REPLACE
1. Depressurize refrigeration system.
2. Disconnect oil bleed and equalizer line at P.D.A.
valve.
3. Disconnect P.O.A. inlet and expansion valve outlet
fittings and cap all openings.
4. Remove insulation at expansion valve thermo bulb
and remove clamps.
5. Disconnect water control valve hoses and remove
valve from bracket.
6. Remove screw retaining expansion valve to bracket.
7. Remove screws retaining P.O.A. valve to bracket.
NOTE: On Firebird V-8 models remove fender skirt
then entire core and case assembly. 27ten separate case
halves to service core.
8. Remove screws retaining left half of case (inboard
side) to dash and to right half of case, Fig. 1A-48.
9. Remove spark plug wire bracket.
10. Gently pry case from sealer (if equipped with
gasket use care not to destroy).
11. On Tempest V-8, use a long bar and pry up slightly
on right side of engine to allow removal of case and ofi
Pontiac models, tilt top of case towards engine. On
Firebird and Tempest 6-cylinder models, remove left
case half.
12. Remove core.
13. To replace, reverse removal procedure.
14. Use care to reseal case halves and case to dash.
EVAPORATOR CASE LEFT HALF
PONTIAC
-
REMOVE AND REPLACE
Follow procedure for core removal. Case half can then
be removed.
TEMPEST AND GRAND PRlX MODELS
-
REMOVE
AND REPLACE
1. Remove screws attaching left case and separate
from dash and right case half. Remove expansion
valve bracket retaining screw.
2.
Pry
gently on case and separate from dash and right
case half. On V-8's, use a long bar to lift right side of
engine slightly which allows removal o f case.
3. Remove case and carefully reseal when replacing.
FlREBlRD 6.CYLINDER MODELS
-
REMOVE AND
REPLACE
1. Remove P.O.A. valve to bracket, disconnect inlet oil
bleed and equalizer line, and lay aside.
2. Disconnect resistor and relay wires.
3. Remove case attaching screws, pry loose and remove
case. Carefully~eseal when assembling.
FlREBlRD &CYLINDER MODELS
-
REMOVE AND
REPLACE
1. Depressurize refrigeration system.
2. Remove battery and tray.
3. Remove fender skirt.
4. Disconnect expansion valve inlet and P.O.A. outlet.
5.
Remove screws retaining case assembly to dash.
6. Separate case halves and remove core.
7. To replace reverse removal procedure.
NOTE:
Position equalizer line close to evaporator case
so that engine movement will not cause rocker cover to
contact line.