P.o.a. Valve; Seating Seal Seat Retainer; Installing Rear Head - Pontiac Grand Prix Service Manual

CUSTOM AIR CONDITIONING lA-27
COMPRESSOR REAR HEAD ASSEMBLY
y
REPLACE
1. Generously oil valve plate around outer edge where
large O-ring will be placed. Oil valve reeds, oil pump
gears, and area where teflon gasket will contact valve
plate.
2. Coat new head-to-shell O-ring with oil and place it
on valve plate in contact with shell.
3. Replace suction screen in rear head.
4. Assemble rear head to compressor shell, using care
not to damage sealing surface (Fig. 1A-45).
5. Assemble new nuts to threaded shell studs. Tighten
25-28 lb. ft. torque.
6. Replace pressure relief valve, if removed, using new
copper washer.
7. Coat the new seal seat O-ring with clean refrigerant
oil and install it in its groove in the compressor neck.
Tool J 2 1508 may be used.
8. Place seal protector J 21303 over the end of the
shaft. Coat the O-ring and seal face of new seal
assembly with clean refrigerant oil and install new seal
assembly on shaft, using tool J 9392.
9. Coat the face of new seal seat with clean refrigerant
oil' and install new seal seat, using tool J 9393. Be sure
seal seat O-ring is not dislodged and seal seat is
making a good seal with the O-ring. (Fig. 1A-45).
10. Install new seal seat retainer ring with tool J 5403,
with flat face against seal seat. The sleeve from tool J
9393 may be used to press on the retainer ring so that
it snaps into place. Remove tool J 21303 from end of
shaft.
11. Leak test compressor as described under LEAK
TESTING THE COMPRESSOR, using a propane
torch type of leak detector, in good condition. Correct
any leaks found.
12. Wipe out any excess oil inside compressor neck and
on shaft, resulting from installing new seal parts.
13. Install new absorbent sleeve by rolling the material
into a cylinder, overlapping the ends, and slipping
sleeve into compressor neck with overlap toward the
top of the compressor. With a small screwdriver or
similar instrument, carefully spread sleeve to remove
overlap so that in final position ends of sleeve will butt
at top vertical centerline.
14. Position new metal sleeve retainer so that its flange
face will be against the front end of the sleeve. Tool J
Fig. 1A-44 Installing Rear Head
9395 or the sleeve from tool J 9393 may be'used to
install the retainer. Press and tap with a mallet, setting
the retainer and sleeve into place, until the outer edge
of the retainer is recessed approximately 1/32" from
the face of the compressor neck.
15. Reinstall the clutch driven plate.
4
P.O.A. VALVE
ALL
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REMOVE AND REPLACE
1. Depressurize system.
2. Disconnect oil bleed fitting (Figs. 1A-46 and 47).
3. Disconnect equalizer fitting.
4. Disconnect inlet and outlet fittings.
5. Remove valve from bracket.
NOTE:
If valve is not immediately replaced, cap
openings toprevent entry of dirt and moisture.
Fig. 1A-45 Seating Seal Seat Retainer