Compressor Discharge Valve Plate A N D /O R Retainer - Chevrolet 1980 Light Duty Truck Repair Manual

4. A lso coat inner surface o f com pressor Shell with the
oil and swab oil onto shell-to-cylinder O-rings. Place the
com pressor Shell on the cylinder and rotate the retaining
strap to its original location.
5. A ttach the Shell Intalling Fixture J-25008-2 to the
H olding Fixture J-25008-1, using the long-bolts and plate
washers o f the set. Align the step projections o f the
Installing Fixture J-25008-2, to contact the com pressor
Shell evenly on both sides.
6. Push the com pressor shell as close to the O-ring,
Figure I D - 110, as possible by hand and check for equal
alignm ent o f the shell around the cylinder. Tighten the
Fixture screws finger tight.
ALTERNATELY TIGHTEN
SCREWS APPROX
1/4 TURN
J 25008-2
COMPRESSOR
¥ SHELL
INSTALLER
Figure 1D-1 10 Installing R-4 Shell
7. U sing a wrench, alternately tighten each bolt
approxim ately 1 /4 turn to push the compressor. Shell over
the O-rings and back against the shell stop flange at the rear
o f the com pressor cylinder.
If one screw appears to require m ore force to turn than
the other, im mediately turn the other screw to bring the
screw threading sequence in-step or the Shell w ill be cocked
and m ade more difficult to install. N orm al installation does
not require m uch force on the wrench if the screws are kept
in-step while turning.
8. W hen the Shell is seated against the stops, bend the
shell retaining strap down into place by tapping gently with
a hammer. R em ove the Shell Installing Fixture J-25008-2.
9. R e-install Clutch R otor and Bearing Assem bly,
Clutch Coil and Pulley Rim as an assembly with Installer
J-26271 (Figure ID -88), and the Clutch Plate and Hub
A ssem bly with Installer J-9480-01 (Figure ID -80).
AIR CONDITIONING COMPRESSOR OVERHAUL 1D-41
10.
according
E V A C U A T IN G
FO R C.C.O.T.
C O N D IT IO N IN G section.
R-4 COMPRESSOR DISCHARGE
VALVE PLATE A N D /O R RETAINER
Remove and Replace
1. "Discharge the Refrigerant System" according to the
the D IS C H A R G IN G , A D D IN G OIL, E V A C U A T IN G
A N D C H A R G IN G P R O C E D U R E S F O R C.C.O.T. A /C
SYSTEM S in the A IR C O N D IT IO N IN G section.
2. Perform Steps 1 through 9 o f "R-4 Compressor Shell
an d /or O-Rings" Rem oval procedure.
J 25008-1
3. R em ove valve plate retainer ring, using Internal Snap
HOLDING
Ring Pliers
FIXTURE
Compressor D ischarge Valve Plate (Figure I D - 112) for
valve plate replacement a n d /o r piston inspection.
R epeat this operation for additional valve plates and
retainer rings. If all four valve plates and retainers are to
be removed, rem ove two sets and then rotate com pressor
and H olding Fixture J-25008-1 in vise for access to the
remaining tw o valve plates and retainers.
V A L V E P LA TE
R E T A IN E R R IN G
Figure 1D -111 Replacing R-4 Valve Plate Retainer
4.
shown in
com pressor and H olding Fixture in vise as necessary for
access.
"Evacuate and Charge the Refrigerant System"
to the D IS C H A R G IN G ,
A N D C H A R G IN G
A /C SYSTEM S
J-4245 ( # 2 3 ) , Figure
J 4 2 A 5
PLIERS
Install D ischarge Valve Plates a n d /o r Retainers as
Figures 1D - 111 and I D - 112.
A D D IN G OIL,
PR O C E D U R E S
IN THE A IR
1D -111. R em ove
Reposition