Installing 1977 A-6 Front Suction Reed; Installing 1977 A-6 Front Discharge Valve Plate; Front And Rear 1977 A-6 Discharge Valve Plates; Installing 1977 A-6 Front Head Casting - Pontiac TRANS AM 1977 Service Manual

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1 8-52 1977 PONTIAC SERVICE MANUAL
OIL RETUHN DISCHA
SLOT .
\
1
cRossOv"E'~ TUBE
/
Fig. 18-65 Installing 1977 A-6 Front Suction Reed
'E
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PINS
BLOCK
Fig. 1 B-86 lnstalling 1977 A-6 Front Discharge Valve
Plate
compressor shell slides down over internal mechanism. As.
shell slides down, line up oil sump with oil intake tube hole
(Fig. 1B-90).
11. Holding Support Block, invert assembly and place
back into Holding Fixture with front end of shaft down.
Remove Support Block.
12. Install new dowel pins in rear cylinder half, if
previously removed.
13. Install new O-ring in oil pick-up tube cavity.
14. Lubricate oil pick-up tube with 525 viscosity
refrigerant oil and install into cavity, rotating compressor
mechanism to align tube with hole in shell baffle (Fig. 1B-91).
15. Install new O-ring and bushing on rear-end of
discharge cross-over tube (See Fig. 1B-80).
16. Install rear suction reed over dowel pins, with slot
TOWARDS sump.
REAR DISCHARGE FRONT DISCHARGE
VALVE PLATE VALVE PLATE
4953
Fig. 18-67 Front and Rear 1977 A-6 Discharge Valve
Plates
Fig. 1B-88 Installing 1977 A-6 Front Head Casting
17. Install rear discharge valve plate assembly over
dowel pins, with reed retainers UP.
18. Position inner oil pump gear over shaft with
previously applied identification mark UP.
19. Position outer oil pump gear over.inner gear with
previously applied identification mark up and, when
standing facing oil sump, position outer gear so that it meshes
with inner gear at the 9-o'clock position, and resulting cavity
between gear teeth is then at 3-o'clock position (Fig. 1B-92).
20. Generously oil rear discharge valve plate assembly
with 525 viscosity refrigerant oil around outer edge where
large diameter O-ring will be placed. Oil the valve reeds,
pump gears, and area where sealing surface will contact rear