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6A5-16
1 9 7 7 PONTIAC SERVICE M A N U A L
NOTE: Oil pans on the 301 and 350 engines have no
inner baffle. 400 engines have oil pan bames only when
equipped with axle ratios above 2.93 to 1.
1. Disconnect battery cable at battery.
2. Remove Engine fan.
3. Inspect hoses and wiring harness routings for
adequate clearances to avoid stretching or binding during lift.
4. On some air conditioned models, it may be necessary
to remove A/C compressor and move aside for clearance.
5. Remove distributor cap.
6. Raise vehicle and drain crankcase.
7. Disconnect exhaust pipes from manifolds.
8. Remove starter assembly and flywheel inspection
cover.
9. Rotate crankshaft until number one cylinder is at
bottom dead center.
NOTE: It will be necessary to loosen fuel pump to
timing cover bolts to permit clearance of engine lifting
tool adapter (J-235 15-2).
10. Position ENGINE LIFTING TOOL J-23515-2 to
engine with adapter 523515-16 bolted to lifting tool (Fig.
6A5-11). Securely tighten tool to timing chain cover with
bolts.
11. Thread jackscrew through crossbar and position
engine lifting crossbar (5-235 15- 1) to adapter (5-23515-2) and
attach nut to jackscrew to hold it to the adapter.
NOTE: Be sure thrust bearing is in place.
12. Slip chain around left frame rail in front of steering
gear and attach to hook. Attach remaining chain around right
frame rail at point where crossbar is now positioned. Make
sure crossbar is parallel to ground (Fig. 6A5-11).
13. Place loose ends of chain across top of support to
prevent chain from slipping out of hooks.
14. Remove both frame bracket-to-engine mount
through bolts.
15. Remove oil pan bolts and, ALLOWING TOOL T O
SWING FREELY, raise engine (using jack screw in tool)
until pan can be removed.
CAUTION: Do not exceed 35 lb.
fi.
torque on
screw.
WARNING:
WHENEVER
ENGINE
IS
RAISED
OFF
ENGINE
MOUNTS,
SUPPORT
ENGINE
BLOCK
W I T H
SUITABLE BLOCKS OF WOOD.
Replace
1. Thoroughly clean all gasket sealing surfaces.
2. Clean sludge from oil pan and oil pump pick-up
screen.
3. Install new gaskets on oil pan (Figs. 6A5-32 and 6A5-
33).
I
Fig.
6A5-32
Front Oil Pan and Gasket
I
I
Fig.
6A5-33
Rear Oil Pan Gasket Installation
4. Apply 1/8" diameter of RTV sealer at front gasket
parting lines as shown in Figure 6A5-32 and apply a light coat
of soft grease on rear rubber seal.
5. Install oil pan. Tighten retaining bolts to 12 lb. ft.
6. Lower engine and install frame bracket-to-motor
mount through bolts.
7. Remove engine lifting equipment.
8. Install flywheel inspection cover and starter.
9. Install exhaust pipes.
10. Tighten fuel pump bolts.
1 1. Lower vehicle.
12. Install fan.
13. Install distributor cap.
14.Connect battery cable.
15. Refill engine crankcase.
OIL PUMP
Remove
1. Remove engine oil pan (see OIL PAN
-
REMOVE
AND REPLACE).
2. Remove oil pump attaching bolts while holding oil
pump in place. Carefully lower oil pump away from block
with one hand while removing oil pump drive shaft with other
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