Custom Air Conditioner; Component Replacement And Adjustment; Precautionary Service Measures; Refrigeration Sub-Assemblies - Pontiac Grand Prix Service Manual

CONTENTS OF THIS SECTION
SUBJECT PAGE SUBJECT PAGE
Precautionary Service Measures
. . . . . . .
1A-1
Ref rigeration Sub-Assemblies
. . . . . . . . .
1A- 1
Evacuating the System
. . . . . . . . . . . . .
1A-2
Charging the System
. . . . . . . . . . . . . .
1A-4
Adding Refrigerant
. . . . . . . . . . . . . . .
1A-7
Checking Compressor Oil Level and
Adding Oil
. . . . . . . . . . . . . . . . . .
1A-8
Removing and Installing Compressor
. . . . .
1A-9
. . . .
Compressor
-
Disassembly Assembly
Hub and Drive Plate Assembly
. . . . . . .
1A-10
Pulley and/or Bearing Assembly
. . . . .
.1A-12
Clutch Coil and Housing Assembly
. . . .
.1A-13
Remove t o Service Engine
. . . . . . . . .
.1A- 14
Shaft Seal Assembly
. . . . . . . . . . . .
.1A- 14
Overhaul
. . . . . . . . . . . . . . . . . .
.1A- 16
Preservation and Packing Service
P a r t s
. . . . . . . . . . . . . . . . . . . .
lA- 16
Rear Head Assembly
. . . . . . . . . . . .
.1A- 16
Major Interior Mechanism
. . . . . . . . .
.1A- 17
Rear Head Assembly
. . . . . . . . . . . .
.1A- 17
Remove and Replace
-
.Ref rigeration
. . . .
.1A-27
P.O.A. Valve
. . . . . . . . . . . . . . . . .
lA- 27
Expansion Valve and Seals.
. . . . . . . .
.1Ar29
Evaporator Core
. . . . . . . . . . . . . .
.1A-30
. . . . . . . .
Evaporator Case
-
Left Half
1A-30
. . . . . . . . . . . . .
Condenser and Seals 1A-31
. . . . . . . . . . . . .
Receiver Dehydrator 1A-31
Air Inlet and Valve Assembly
. . . . . . . .
1A-31
Blower Motor, Impeller and/or
. . . . . . . . . . . .
Blower Motor C a s e . 1A-32
Heater C o r e and Case Assembly
. . . . . .
1A-33
C a m Assembly Temperature Door.
. . . . .
lA-33
Temperature Cable
. . . . . . . . . . . . .
.1A-34
Temperature Cable
-
Adjust.
. . . . . . .
.1A-34
Control Panel
. . . . . . . . . . . . . . . .
.1A-34
Hi Blower Relay, Resistor Block,
. . . . . . . . . . .
and Ambient Switch. : 1A-34
A/C Engine Compartment and
Jumper Harness.
. . . . . . . . . . . . .
.1A-37
Diverter Door Diaphragms.
. . . . . . . .
.1A-37
Air Inlet Diaphragms.
. . . . . . : . . . .
.1A-38
Plenum Air Valve Diaphragm
. . . . . . .
.1A-38
Cold Air Distribution, Center Air
Outlet and Side Outlet-cts.
. . . . . . .
1A-39
Vacuum Hose Harness
. . . . . . . . . . . .
lA-40
In-Car A/C Wiring Harness
. . . . . . . . .
lA-40
Compressor Mounting and Belt A d j ~ s t ~ e n t . lA-42
Air Conditioning Wiring Schematic
. . . .
.1A-42
,,iNT AND
2. All sub-assemblies should be at room temperature
before uncapping. (This prevents condensation of
ADJUSTMENT
moisture from the air that enters the system.).
PRECAUTIONARY SERVICE MEASURES
Before any service is attemped which requires opening
of refrigeration pipes or units, the person doing the
work should be thoroughly familiar with the material
in the Diagnosis Manual
-
Basic Air Conditioning
Information. Also, he should follow very carefully the
instructions given on the following pages for the unit
being serviced.
3. If, for any reason, caps are removed but the
connections are not made, then the tubes and other
parts should not remain unsealed for more thann 15
minutes. Reseal connections if period is to be longer.
This applies particularly to partially built-up systems
that will be left overnight.
4. Compressors are shipped with 10-11 oz. of Frigi-
daire 525, or equivalent, viscosity oil and charged with a
mixture of Refrigerant-12 and dry nitrogen t o provide an
The major reasons behind these measures are lor
internal pressure at slightly above atmospheric pressure.
safety and to prevent dirt and moisture from getting
into system. ~ i r t contaminant is apt to causeleaky
ASSEMBLY
valves or wear in the compressor, and moisture will
lreere into ice at and
1. All precautions should be taken to prevent damage
stem.
,to fittings or connections. Even minute damage to a
The presence of moisture can also cause the formation
connection could cause it to leak.
of hydrochloric or hydrofluoric acids in the system.
2. Any fittings getting grease or dirt on them should be
REFRIGERATION SUB-ASSEMBLIES
wiped clean with a cloth dampened with alccohol. Do
not use chlorinated solvents such as trichlorethylene
1. All sub-assemblies are shipped, sealed and dehy- for a cleaning agent, as they are contaminants. If dirt,
drated. They are to remain sealed until just prior to grease or moisture gets inside pipes and cannot be
making connections. removed, pipe is to be replaced.