Buick LeSabre 1965 Service Manual page 151

CLUTCH, S-M TRANSMISSION
46000 CLUTCH 4 - 1 5
yoke is installed so cone pointed
cap screw can be installed into
counter bore on shaft. (See Fig-
ure 4-10).
6
V
Install clutch release yoke
over woodruff key. Install cone
point socket head cap screw first.
Install second socket head cap
screw in same hole. (See Fig-
ure 4-10).
7. Install nylon bushing
8. Install clutch release seal.
9. Install clutch release lever.
10. Install ball stud to clutch re-
lease shaft.
11. Install clutch equalizer shaft.
12. Install clutch release r o d
with retainer pin. Adjust clutch
pedal lash as described in para-
graph 4-6.
13. Install transmission as de-
scribed in paragraph 4-13. Be
sure to use guide pins to avoid
damage to clutch driven plate.
14. I n s t a l l f l y w h e e l l o w e r
housing.
15. Road test car for clutch per-
formance. Under no circumstance
should the clutch be harshly used
immediately after installation of
a new driven plate, flywheel, or
pressure plate. Sudden engage-
ment of clutch with engine running
at abnormal speed, or continual
slipping of clutch, may perma-
nently injure driven plate facings
and may cause scoring of fly-
wheel and pressure plate. When
these parts are new they must be
given moderate use for several
days until nicely burnished. Be
sure that car owner is advised of
this requirement.
4 - 1 0 INSPECTION OF
CLUTCH
Wash all metal parts of clutch,
except release bearing and driven
plate, in suitable cleaning solution
to remove dirt and grease.
Soaking release bearing in clean-
ing solution would permit solution
to seep into bearing and destroy
t h e lubricant. Soaking d r i v e n
plate in cleaning solution would
damage the facings.
1. Flywheel and Pressure Plate.
Examine friction surfaces of fly-
wheel and pressure plate for
scoring and roughness. S l i g h t
roughness may be smoothed with
fine emery cloth, but if surface
is deeply scored or grooved the
part should be replaced.
2. Clutch Cover. Inspect clutch
cover for cracks or distortion.
Check clearance between pres-
sure plate driving lugs and edges
of slots in cover, using feeler
gauges. The clearance should be
.005" to .008"; excessive clear-
ance may cause rattle when en-
gine is intermittently accelerated
with clutch disengaged.
3. Clutch Driven Plate. Inspect
driven plate for condition of fac-
ings, loose rivets, broken or very
loose torsional springs, and flat-
tened cushion springs. See Fig-
ure 4-8.
If facings are worn down near
rivets or are oily, the plate as-
sembly should be replaced. A
very slight amount of oil on clutch
facings will cause clutch grab and
chatter. A large amount of oil on
facings will cause slippage. Re-
moval of oil by solvents or by
buffing is not practical since oil
will continue to bleed from facing
material when hot.
When oil is found on driven plate
facings, e x a m i n e transmission
drainback hole, pilot bushing, en-
gine rear main bearing and other
points of oil leakage.
Test the fit of driven plate hub on
transmission main drive gear; an
easy sliding fit should exist. Re-
gardless of whether the old plate
or a new one is to be installed,
the plate should be checked for
run-out. This check can be made
by sliding the driven plate, front
side first, over the transmission
main drive gear until it is tight
on the spline, then setting up a
dial indicator to bear against the
plate facing as shown in Figure
4-12. While holding firmly against
front end of main drive gear to
take up play in main drive gear
bearing, slowly rotate driven plate
and observe the amount of run-out
shown by indicator. If run-out of
front facing exceeds .025" the
plate should not be used since it
is not practical to correct exces-
sive run-out by bending.
4. Bearings. Inspect clutch re-
lease bearing for scoring or ex-
cessive wear on front contact
1
- "I—Mil •
' u ' I
mm
FRONT FACING H
" (FLYWHEEL S I D E ) | |
TDIAL
•INDICATOR:
TSET i
Figure 4-12—Checking Driven Plate
for Run-Out