Pontiac FIREBIRD 1972 Service Manual page 586

6-74 1972 PONTIAC SERVICE MANUAL
10. Install fan belt and adjust to specifications.
TIMING CHAIN COVER SEAL
REMOVE AND REPLACE
Loosen generator adjusting bolts.
Remove fan and accessory drive belts.
Remove harmonic balancer.
Remove timing chain cover seal by'prying out of bore
with a pry bar (Fig. 6-125).
Install new seal with lip of seal inward, using seal
installer J 21 147. (All except 307 engine) or J 23042
(307 engine).
Replace harmonic balancer.
Install drive belts and adjust to proper tension (see
Section 6A).
TIMING CHAIN COVER, GASKET, OR
FUEL PUMP ECCENTRIC
REMOVE AND REPLACE
1. Drain radiator and cylinder block.
2. Loosen generator adjusting bolts.
3. Remove fan belt and accessory drive belt.
4. Remove fan and pulley from hub of water pump.
Fig.
6-125
Timing Chain Cover Seal
Remove water pump.
Disconnect lower radiator hose.
On all but 307 engine, remove fuel pump.
Remove harmonic balancer.
Remove front four oil pan-to-timing chain cover
screws.
On 307 engine, remove oil pan and lower engine back
down on engine mounts. (On 307 engine, timing
chain cover lower seal interlocks with oil pan).
Remove timing chain cover to block attaching bolts
and nuts and timing chain cover to intake manifold
bolt.
I
Pull timing chain cover forward to clear studs and
remove.
On all but 307 engine, remove O-ring seal from recess
in intake manifold water recirculation passage.
Remove timing chain cover gasket and thoroughly
clean gasket surfaces on block and cover. Use care to
prevent gasket particles and other foreign material
from falling into oil pan.
On all but 307 engine, inspect front oil pan gasket and
replace if damaged. If new gasket is installed, it
should be cemented to oil pan.
On all but 307 engine, if new fuel pump eccentric and
bushing are to be installed, remove camshaft sprocket
retainer bolt and retaining washer and remove the
eccentric and bushing. Place fuel pump bushing over
eccentric with rolled flange toward camshaft
sprocket (Fig. 6- 126).
CAUTION: Bushing retaining flange should be
between eccentric and sprocket for retention of
bushing during operation.
Install bushing and eccentric, indexing tang on eccen-
tric with keyway cutout in camshaft sprocket. Insert
retaining screw with retainer washer and tighten se-
curely.
Position new timing chain cover gasket over studs
against block.
Transfer water pump to new timing chain cover if
new cover is to be installed.
On all but 307 engine, install new O-ring seal in water
recirculation passage of intake manifold.
Position timing chain cover on engine indexing over
dowels, install bolts and nuts and tighten securely.