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18-42
1977 PONTIAC SERVICE- MANUAL
Fig. 18-53 ~ e m =
1977-
Rear ~ T c h a r g e valve
Plate
OIL
PICK-UP
TUBE
REMOVER
J-5139
Fig. 18-55 Removing 1977 A-6 Oil Pick-Up Tube
18. Remove front discharge valve plate assembly and
front suction reed plate. Examine reeds and seats. Replace
necessary parts.
19. Remove suction cross-over cover by prying with
screwdriver between cylinder casting and cover (Fig. 1B-56).
Fig. 18-54 ~ e m o v i n g 1977 A-6 Rear Suction Reed
13. Using Oil Pick-Up Tube Remover J 5 1 39 (Fig. 1 B-
5 9 , remove oil pick-up tube. Remove O-ring from oilinlet.
14. Loosen compressor from Holding Fixture J 9396,
place Internal Assembly Support Block J 21352 over oil
pump end of shaft and, holding Support Block in position
with one hand, lift compressor from Holding Fixture with
other hand. Invert compressor and position on bench with
Internal Assembly Support Block resting on bench.
15. Lift front head and compressor shell assembly up,
leaving internal mechanism resting on Internal Assembly
Support Block.
CAUTION: To prevent damage to shaft, DO
NOT TAP ON END OF COMPRESSOR
SHAFT to remove internal mechanism. If
mechanism will not slide out of compressor shell,
tap on front head with a plastic hammer.
Fig. 1 8-56 Removing 1977 A-6 Suction Cross-Over Cover
16. Rest compressor shell on its side and push front head
assembly through compressor shell, being careful not to
damage sealing areas on inner side of front head.
Discard O-ring.
It may be necessary to tap on outside of front head, using
a plastic hammer, to overcome friction of O-ring seal between
front head and compressor shell.
17. Wipe excess oil from sealing surfaces on front head
casting webs and examine sealing surface. If any surface
damage is observed, the head should be replaced.
20. Examine internal mechanism for any obvious
damage. If internal mechanism has sustained major damage,
due to loss of refrigerant or oil, it may be necessary to use
the Service internal mechanism Assembly rather than replace
individual parts.
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