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6A4-20
1977 PONTIAC SERVICE MANUAL
Fig. 6A4-50 Checking No. 5 Oil Hole
Fig. 6A4-5 1 Installing No. 1 Cam Bearing
6. Use BT-6409-9 to check all oil hole openings. Wire
must enter hole or the bearing will not receive sufficient
lubrication. (Fig. 6A4-50)
Camshaft and Oil Galley Plugs (Fig. 6A4-52)
The left hand rear oil galley plug is not shown. It is a
threaded plug in the end of the left galley just rearward of
the distributor. A small hole is provided in the plug for
distributor lubrication. The cup plug shown provides access
to the threaded plug.
Fig. 6A4-52 Camshaft and Oil Gallery Plug
The front oil galley plugs (not shown) are threaded. The
plug on the right side has a small hole which provides
lubrication for the timing chain and gears.
To find out if the camshaft plug at the rear of the engine
is properly instaled: Place a straight edge across the machined
surface of the rear of the block and measure from the straight
edge to the lip of the plug. Dimension should be .250"
maximum to .l6O" minimim.
OIL PAN
Removal
1. Remove distributor cap and align rotor in the number
one firing position.
2. Disconnect battery cable. Remove the dip stick.
3. Remove upper radiator support and fan shroud
attaching screws.
4. Hoist the car and drain oil.
5. Remove flywheel cover.
6. Disconnect exhaust and crossover pipes.
7. Remove starter assembly.
8. Remove engine mounts from engine block, then jack
front of engine up as far as possible using Engine Support
Tool 5-23515 and Adapter 5-23515-20 or BT-6501 (Fig. 6A4-
53)
9. Remove oil pan attaching bolts and remove oil pan.
Installation (Fig. 6A4-54)
1. Apply 1050805 Sealer or equivalent to both sides of
pan gaskets and install on block.
2. Install front and rear seal (rubber).
3. Wipe lube, 1050805, or equivalent on seal area and
install pan. Torque bolts to 10 ft. lbs. Reverse the removal
procedure. Fill crankcase.
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