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CUSTOM AIR CONDITIONING
1 8-67
J
25008-1
HOLDING FIXTURE
SHELL TO
Fig. 18-1 28 Removing 1977 R-4 Shell
threading sequence in-step or the shell will be cocked and
made more difficult to remove. Normal removal does not
require much force on the wrench if the screws are kept in-
step while turning. The shell can be removed by hand as soon
as the shell is free of the shell to cylinder O-rings. Do not turn
the screws any further than necessary to release the shell.
14. Remove the compressor shell and remove the
Holding Fixture, J 25008-1, from the compressor. Reverse
the fixture to again hold the compressor by the opposite side
using the short-length screws.
15. Remove and discard both cylinder to shell O-rings.
Replace
1. Check the compressor cylinder assembly and interior
of the compressor shell to be sure they are free of lint, dirt,
etc.
2. Dip a new cylinder-to-shell O-ring in clean 525
viscosity oil and install in the rear O-ring groove of the
cylinder. Be careful in moving the O-ring across the cylinder
surface to prevent damaging the O-ring.
3. Dip the remaining cylinder-to-shell O-ring in the oil
and install it in the front O-ring groove of the cylinder.
4. Also coat inner surface of compressor shell with the
oil and swab oil onto shell-to-cylinder O-rings. Place the
compressor shell on the cylinder and rotate the retaining
strap to its original location.
5. Attach the Shell Installing Fixture, J 25008-2, to the
Holding Fixture, J 25008-1, using the long-bolts and plate
washers of the tool set. Align the step projections of the
Installing Fixture, J 25008-2, to contact the compressor shell
evenly on both sides.
6. Push the compressor shell as close to the O-ring, Fig.
1B-129, as possible by hand and check for equal alignment
of the shell around the cylinder. Tighten the fixture screws
finger tight.
7. Using a wrench, alternately tighten each bolt
approximately 1/4 turn to push the compressor shell over the
O-rings and back against the shell stop flange at the rear of
1
ALTERNATELY TIGHTEN
F i g . iB-129 ~ r k a l l i n g 1 9 7 7 ~ - 4
SLII
the compressor cylinder.
If one screw appears to require more force to turn than
the other, immediately turn the other screw to bring the screw
threading sequence in-step or the shell will be cocked and
made more difficult to install. Normal installation does not
require much force on the wrench if the screws are kept in
step while turning.
8. When the shell is seated against the stops, bend the
shell retaining strap down into place by tapping gently with
a hammer. Remove the Shell Installing Fixture J 25008-2.
9. Re-install Clutch Rotor and Bearing Asm., Clutch
Coil and Pulley Rim as an assembly, and the Clutch Plate
&
Hub Asm. with Installer J 26271 (Fig. 1B-110).
10. "Evacuate and Charge the Refrigerant System"
according to the DISCHARGING, EVACUATING AND
CHARGING
PROCEDURES FOR C.C.O.T. A/C
SYSTEMS.
R-4 COMPRESSOR DISCHARGE VALVE
PLATE AND/OR RETAINER
1. Remove compressor from car and remove compressor
shell by performing steps 1 thru 15 of "Compressor Shell"
Removal procedure.
2. Remove valve plate retainer ring using J 4245 (#23)
Internal Snap Ring Pliers (#23), Fig. 1B-130. Remove
compressor discharge valve plate (Fig. 1B- 13 1) for valve plate
replacement and/or piston inspection. Repeat this operation
for additional valve plates and retainer rings. If all four valve
plates and retainers are to be removed, remove two sets and
then rotate compressor and holding fixture in vise for access
to the remaining two valve plates and retainers.
3. Install discharge valve plates and/or retainers as
shown in Figs. 1 B- 1 30 and 1 B- 13 1. Reposition compressor
and holding fixture in vise as necessary for access.
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