Pontiac FIREBIRD 1972 Service Manual page 821

CLUTCH. MANUAL TRANSMISSIONS 7-9
STARTER R I N G GEAR
REMOVE
1. With flywheel removed from vehicle, place the fly-
wheel, crankshaft side down, on a solid flat surface
or block which is slightly smaller in diameter than the
flywheel.
2. Drive the ring gear off the flywheel, using a suitable
drift and hammer.
NOTE: Keep working around the circumfer-
ence of the nng gear to a void binding the nng
-
gear on the flywheel.
Fig. 7-8 Clutch Pilot Bearing Staked
3. Remove all burrs and rough spots from flywheel.
REPLACE
4. If bearing is a snug fit in crankshaft, use Puller J 4383
and Slide Hammer J 2619-A to remove bearing.
When installing new bearing, see that hole in crank-
shaft is thoroughly clean. Install new bearing with
shielded side toward transmission. Start bearing into
hole and tap into place. Stake slightly, as shown in
Fig. 7-8, to keep bearing in place in case the transmis-
sion is removed in the future.
5. If flywheel is to be removed and reinstalled, scribe
marks on flywheel and crankshaft flange, remove fly-
wheel-to-crankshaft bolts and remove flywheel.
6. When reinstalling, clean the mating flanges of fly-
wheel and crankshaft carefully, making sure there are
no burrs on either mounting face. Position flywheel
on crankshaft flange with scribe marks in alignment
and install flywheel-to-crankshaft bolts and tighten
evenly to 95 lb. ft. torque.
NOTE: Flywheel bolts do not require lock
washers,
7. Install clutch and transmission.
1. Support flywheel in a level position with cylinder
block side facing up.
2. Support ring gear on metal surface and, using a blow-
torch or acetylene torch, heat ring gear uniformly on
the inside diameter, keeping the torch moving around
the circumference of the ring gear to avoid localizing
hot spots.
CAUTION: Under no circumstances should the
nng gear be heated over 400°F., as excessive
heating may destroy the original heat treat-
ment.
3. Pick ring gear up with tongs and place it in position
on flywheel, with ring gear facing the same direction
as the one just removed.
4. Tap ring gear down into place against shoulder on
flywheel. If the ring gear can not be tapped into place
readily, it may be necessary to remove it and apply
additional heat, heeding the caution about overheat-
ing given in step 2.
5. Reinstall flywheel in vehicle.
SPECIFICATIONS
CLUTCH
3 5 0 ~ - 8
..............................................................
10.4"
..............................................................
400V-8 10.4"
..............................................................
.
455 V-8 11.0''
................................
Pedal Lash
................................................
3 1/2 turns of
Release Bearing Sealed Ball Bearing
adjusting rod from zero position.
Diaphragm Springs:
..........
Type Disc Facings
..............................
Single Plate Dry
6 cyl. and 350-2 Bbl., V-8 Flat Finger Design
........................
Diameter of Disc: 400 and 455 V-8 Bent Finger Design
250 L-6
..............................................................
9.12"