1A-10
1967
PONTIAC
SERVICE
MANUAL
suction
gauge
fitting, and also at the discharge
gauge
fitting.
2.
Remove the flare nut from center connection on
gauge
manifold or the plug in the
gauge
line attached
to the center connection.
Wrap
the line at the outlet
with
a cloth to protect persons and car surfaces
from
oil or refrigerant.
3.
Slowly depressurize refrigeration system.
4. While system is depressurizing remove clutch
assembly and coil from old compressor as outlined
under
COMPRESSOR
CLUTCH,
COIL
AND
SEAL
REPLACEMENT.
If parts are not oil soaked and are
in
good
condition, lay them aside on a clean surface
as they may be installed on the new compressor.
5. After the system is completely depressurized,
very
slowly loosen screw which retains compressor
fittings assembly to compressor. As screw is being
loosened, work fittings assembly back and forth to
break
seal and carefully bleed off any remaining
pressure.
CA
UTION:
High pressure may still
exist
at the
discharge
fitting.
If this pressure is released too
rapidly
there will be a considerable discharge of
refrigerant and oil.
6. When all pressure has been relieved, remove
screw
and remove fittings assembly and
O-ring
seals.
7
0
Immediately cover compressor openings. A
simple way is with a plate (similar to the one on new
compressor)
which can be attached with fittings as-
sembly screw, using the O-rings to provide a seal.
8. Disconnect compressor clutch coil wire and
remove compressor mounting plates to bracket bolts,
front
and
rear.
9. If there is any possibility that broken parts
from
the compressor got into the discharge line or
the condenser, all refrigeration system parts should
be cleaned and a new receiver-dehydrator assembly
should be installed.
10.
Drain
all oil from compressor just removed
in
a clean dry container and replace compressor
drain
plug screw. Measure amount of oil drained.
See
CHECKING
COMPRESSOR
OIL
LEVEL
AND
ADDING
OIL.
COMPRESSOR
REPLACEMENT
NOTE:
Before installing a new compressor, ro-
tate
compressor shaft four or
five
times.
This
permits
proper lubrication of compressor seal
over all its surface. Before compressor clutch is
mounted to the new compressor,
wipe
the front
face of the compressor thoroughly
with
a clean dry
cloth and, if necessary, clean front of compressor
with
a solvent to remove any excess oil. Cleaning
compressor in this manner will prevent any oil
from being thrown onto the clutch surfaces which
would cause
slippage
and eventual clutch failure.
1. Stamp refrigerant charge of refrigerant system
on new compressor in space on plate provided for
this information.
NOTE:
Follow procedure for replacing oil in new
compressor explained under
REMOVING
AND
INSTALLING
COMPRESSOR.
2.
Install
new compressor on car, leaving com-
pressor
fittings opening cover plate on
compressor.
3.
Remove cover plate over compressor openings
very
slowly to bleed off pressure.
CA
UTION:
New compressors are charged
with
a
mixture of nitrogen, Refrigerant-12 and 11 fluid
ozs. of Frigidaire 525
viscosity
oil. If the cover is
removed too
rapidly,
the oil will be blown out
violently
with
the sudden release of pressure.
4.
Install
coil and clutch parts if not already
installed.
5. Evacuate, charge and perform
OPERATIONAL
TEST.
•COMPRESSOR
HUi AND
DRIVE
PLATE
ASSEMBLY
REMOVE
AND
REPLACE
REMOVE
1. Hold the clutch hub with J 9403 wrench and
using J 9399 (special thin
wall
9/16" socket), remove
hub and drive plate assembly lock nut from shaft
(Fig.
1A-4).
2.
Screw threaded hub puller J 9401 into the hub.
Holding
body of tool with a wrench, tighten the cen-
ter
screw to remove hub and drive plate assembly
(Fig.
1A-5).
Remove J 9401 puller.
3.
Remove hub and drive plate assembly retainer
ring,
using J 5403 (No. 21
Truarc
pliers). Remove
spacer
(Fig.
1A-6).
4. Remove hub and drive plate assembly key from
shaft.
REPLACE
1. Insert square drive key into hub of drive plate
so it projects approximately 3/16" out of end of
keyway
(Fig.
1A-7).
Wedge into keyway with blunt
tool.
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