Drain Holes In Lifter Gallery - Pontiac Grand Prix Service Manual

V-8
ENGlNE
6-71
NOTE: Mark connecting rod caps for proper reinstalla-
tion.
13. Remove main bearing caps from block.
NOTE: Before removing crankshap, tape threacis of
Depress pistons until connecting rocis are fiee of
crankshaft.
14. Lift crankshaft from block.
REPLACE
1. With upper bearings installed, position crankshaft in
block.
2. Install main bearing caps (with bearing shells in
place) but do not tighten retaining bolts.
3. Pull connecting rods and piston assemblies into
place, rotating crankshaft as necessary to properly seat
rods.
NOTE: Make sure upper bearings remain in proper
position.
4. Remove tape from connecting rod threads and
install connecting rod caps (with bearings) and
retaining nuts, but do not tighten.
5. Check fit of all main and rod bearings with
plastigage and install proper sized new bearings.
6. Tighten rear main bearing cap to 120 lb. ft. torque
and all remaining bearing caps 100 lb. ft. torque.
Tighten connecting rod bearing cap retaining nuts 43
lb. ft. torque.
7. Install sprockets and timing chain, making sure
timir~g marks on sprockets are aligned properly (Fig. 6
97).
8. Install fuel pump eccentric and bushing and insert
sprocket retaining bolt with washer. Tighten securely.
9. Install timing chain cover, new cover gasket and
new O-ring seal.
10. Install fuel pump.
1 1. mtall harmonic balancer.
12. Install oil baffle and oil baffle tube.
13. Install oil pump drive shaft and oil pump assembly.
14. Install engine oil pan.
15. Install spark plugs.
16. Remove engine from stand and install clutch (SM)
17. Install complete assembly in vehicle.
ENGINE BLOCK CORE HOLE PLUGS AND OIL
PASSAGE PLUGS, INSPECT AND REPLACE
Engine moving part failures may be caused by lack of
proper lubrication. In such case it may be necessary to
trace oil supply in the block to determine area of
obstruction. Oil pressure drop may be caused by
leaking oil passage plugs. For these reasons the
following procedures and block illustrations are pro-
vided.
NOTE: Oil circulation diagram is provided in the
engine lubrication section. Figs. 6-128, 6-129 and 6-130
ako show the various location of water jacket core hole
plugs.
1. With cylinder block inverted, use pen light to see
that passage from oil pump to filter is open (Fig. 6
130).
2. Check passage from filter outlet to rear main
bearing by inserting wire in oil filter outlet passage
and using pen light to see that wire is visible in
passage to rear main bearing (Fig. 6-129).
3. Visually check passage from each main bearing to
corresponding camshaft bearing (Fig. 6-130).
4. Check passage from filter outlet (through left oil
gallery) to main bearings. Use rubber hose to blow
smoke in oil filter outlet while observing to see that
smoke passes out passages leading to all main
bearings.
5. With cylinder block right side up, check oil passages
to left bank lifter bosses. Use rubber hose to blow
smoke in oil filter outlet while observing for smoke
passing out oil passages from left main oil gallery to
lifter bosses (Fig. 6-128).
to engine.
Fig. 6-127 Drain Holes in Lifter Gallery