Pontiac firebird 1968 - Remove and Replace

6-24
1968 PONTIAC SERVICE MANUAL
is at bottom. (This puts the crankshaft counter-
weights in the proper position.)
11. Bolt J 22345 (Tempest) or J 22773 (Firebird)
engine support bracket to front of harmonic balancer.
NOTE: Safety bracket on Firebird tool must en-
gage in crossmember reinforcement bar (Fig.
6-10).
12. With suitable equipment, raise engine at
J 22345 or J 22773 until insulators clear frame
brackets.
13. Remove oil pan bolts.
14. On Tempest raise engine approximately 4 1/2".
Apply a rearward force on the engine-transmission
assembly until oil pan clears the flywheel housing
and remove oil pan.
On Firebird raise engine approximately 2" or until
011 pan clears the flywheel housing and remove oil
pan.
REPLACE
1. Install new gasket on oil pan.
2. Apply rearward force to engine-transmission
assembly sufficient to allow oil pan to clear flywheel
housing (Tempest).
3. Install oil pan and tighten retaining bolts to
12 lb. ft.
4. Lower engine, remove engine support bracket
and install engine insulator bracket to frame thru-
bolts.
5. Tighten transmission insulator to crossmember
bolts to 30 lb. ft.
6. Replace flywheel cover and starter assembly.
7. Lower vehicle.
Fig. 6-44 Removing Rear Main Bearing Cap
REAR MAIN
BEARING CAP SIDE
OIL SEALS
Fig. 6-45 Rear Main Bearing Cap Side Oil Seals
8. On air-conditioned vehicles, replace compres-
sor and adjust belt tension.
9. Replace air cleaner assembly.
10. Refill crankcase.
11. Connect battery cable.
HEAR MAIN BEARING OIL SEAL-
REMOVE AND REPLACE
The rear main bearing oil seal can be removed
(both halves) without removal of the crankshaft.
NOTE: Always replace upper and lower seal as a
unit.
1. Remove oil pan. (See "Oil Pan—Remove and
Replace".)
2. Remove rear bearing cap using J 22325 (Fig.
6-44).
3. Remove oil seal from groove, prying from bot-
tom, using a small screwdriver.
NOTE; Always clean crankshaft surface before
installing a new seal.
4. Remove rear bearing cap side oil seals. Place
new seals in position and place bearing cap in vise
and compress seals into place (Fig. 6-45).
5. Insert a new seal well lubricated with engine oil
in bearing cap groove; gradually push with a hammer
handle until seal is rolled into place.
6. To replace the upper half of seal, use a small
hammer and brass pin punch to tap one end of oil