Buick LeSabre 1965 Service Manual page 828

ACCESSORIES
OPTIONAL HEATER-AIR CONDITIONER SYSTEM 1 1 - 9 5
leak detector and correct any
leaks.
6. Install clutch drive plate. Sub-
paragraph "b".
1 1 - 1 7 DISASSEMBLY,
INSPECTION AND
ASSEMBLY OF
COMPRESSOR
INTERNAL PARTS
IMPORTANT: A c l e a n work
bench, orderliness of the work
and a place for all parts being
removed and replaced are of
great importance. Any attempt to
use makeshift or inadequate tools
may result in damage and/or im-
p r o p e r o p e r a t i o n of the
compressor.
a. Rear Head and Oil
Pump Removal
CAUTION: Under NO circum-
stances should compressor be
placed on the pulley end.
1. Seal compressor fitting open-
ings and openings in compressor
rear head.
2. Thoroughly clean exterior of
compressor assembly and blow
dry with compressed air.
REAR
HEAD
3. Place compressor assembly on
clean, dry work bench.
NOTE: If compressor is not go-
ing to be disassembled any further
than rear head or oil pump, omit
Steps 4, 5, 6, 7 and 8.
4. Remove compressor oil drain
plug, tilt compressor and drain
oil into clean dry container. It
may be possible to get only 4 to
6 ozs. of oil from the compressor.
5. Remove clutch drive plate.
Paragraph 11-16, subparagraph
( (n7>
a. .
6. Remove p u l l e y assembly.
Paragraph 11-16, subparagraph
ttnff
a. .
7. Remove coil and housing as-
sembly. Paragraph 11-16, sub-
paragraph " e ' \
8. Remove shaft seal. Paragraph
11-16, subparagraph "g".
9. Attach J-9396 Holding Fixture
to compressor and firmly mount
assembly in vise. See Figure
11-116.
10. Remove pressure relief valve
and washer if head is going to be
replaced.
11. Remove four lock nuts from
threaded studs welded to com-
pressor shell, and remove rear
Figure 11-116—Removing or Installing
Pressure Relief Valve
SUCTION
SCREEN *
J
REAR H E A D - JjZk
1
^ k TEFLON
M^AT SURFACES
•yaffil,T° HEAD]
head by tapping lightly with
mallet.
12. Examine teflon surface on the
rear head casting webs. If any
damage is observed, the head
should be replaced. See Figure
11-117.
13. Remove suction screen and
examine for damage or contam-
ination. Clean or replace as
necessary.
14. Mark rear side of both oil
pump inner and outer rotors with
a pencil so that they can be re-
installed in same position. Re-
move r o t o r s and inspect for
damage. Replace both rotors if
one or both show damage.
15. Remove and d i s c a r d rear
shell to head "o" ring.
16. Carefully remove rear dis-
charge valve plate by prying up
on assembly as shown with screw-
drivers and examine discharge
valve reeds and seats. See Fig-
ure 11-118. Replace entire as-
sembly if excessively scored or
if any one of the three reeds are
broken, or seats are damaged.
17. If rear suction valve reed
disc did not come out with valve
plate, carefully remove reed as
shown with two s m a l l screw-
drivers. See Figure 11-119. Re-
place valve disc if damaged.
PRY UNDER REED
VALVE RETAINERS
REAR DISCHARGE
VALVE PLATE
Figure 11-117-Rear Head
Figure 11-118—Removing Rear
Discharge Valve Plate