Chevrolet Corvette 1963 Repair & Tune-Up Manual page 137

Install oil pump screen by tapping lightly
ness in the pump body. Inspect inside of pump
cover for wear that would permit oil to leak
past the ends of the gears.
8. Inspect the pickup screen and pipe as
sembly for damage to screen, pipe or relief
grommet.
9. Check the pressure regulator valve for
fit.
10. If the pickup screen and pipe assem
bly was removed, it should be replaced with
a new part. Loss of press fit condition could
result in an air leak and loss of oil pressure.
Mount the pump in a soft-jawed vise, apply
sealer to end of pipe, and use a suitable tool
to tap the pipe in place.
NOTE: Be careful of twisting, shearing or
collapsing pipe while installing in pump. Do
not use excessive force.
11. Install the pressure regulator valve and
related parts.
12. Install the drive gear and shaft in the
pump body.
13. Install the idler gear in the pump body
with the smooth side of gear towards pump
cover opening.
NOTE: Pack the inside of the pump com-
pletely with petroleum jelly. DO NOT use
engine oil. The pump MUST be primed this
way or it won't produce any oil pressure
when the engine is started.
14. Install the pump cover and torque at
taching screws to specifications.
15. Turn drive shaft by hand to check for
smooth operation.
INSTALLATION
1. Assemble pump and extension shaft to
rear main bearing cap, aligning slot on top
end of extension shaft with drive tang on lower
end of distributor drive shaft.
NOTE: When assembling the drive shaft
ENGINE AND ENGINE REBUILDING
extension to the drive shaft, the end of the
extension nearest the washers must be in-
serted into the drive shaft.
2. Insert the drive shaft extension through
the opening in the main bearing cap and block
until the shaft mates into the distributor drive
gear.
3. Install the pump onto the rear main
bearing cap and install the attaching bolts.
Torque the bolts to specifications.
4. Install the oil pan and fill the crankcase
with engine oil.
Flywheel and Ring Gear
REMOVAL AND INSTALLATION
The ring gear is an integral part of the fly-
wheel and is not replaceable.
1. Remove the transmission.
2. Remove the six bolts attaching the fly
wheel to the crankshaft flange. Remove the
flywheel.
3. Inspect the flywheel for cracks, and in
spect the ring gear for burrs or worn teeth.
Replace the flywheel if any damage is appar
ent. Remove burrs with a mill file.
4. Install the flywheel. The flywheel will
only attach to the crankshaft in one position,
as the bolt holes are unevenly spaced. Install
the bolts and torque to specification. Tighten
bolts in criscross pattern.
ENGINE COOLING
The cooling system consists of a radiator, ex-
pansion tank, viscous drive fan, thermostat,
and mechanical water pump. Small block and
certain special-performance large block Cor-
vettes use an aluminum cross-flow radiator.
Most large block Corvettes utilize a larger ca-
pacity radiator of conventional copper-brass
alloy. The viscous drive fan restricts opera-
tion at 1500 rpm in cold weather and 3500
rpm during warmer temperatures. This fan
requires less horsepower to drive during high
rpm operation and reduces under-hood noise.
Corvettes equipped with aluminum radia-
tors demand certain precautions during nor-
mal operation and maintenance. Caution is
advised when removing and replacing the
filler cap, to avoid denting or scratching the
sealing surfaces of the filler neck. Do not use
replacement filler caps that use brass in their
construction. Extended use will damage the
radiator and necessitate extensive repair or
replacement. The same precautionary mea-
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