Chevrolet Corvette 1963 Repair & Tune-Up Manual page 122

system, adjust the tension of the drive belts,
and check for leaks after the engine is started.
Timing Cover Oil Seal
REPLACEMENT
The timing cover oil seal may be replaced
without removing the timing cover. Follow
steps 1, 2, 6 and 7 of the Timing Cover Re-
moval procedure to gain access to the cover.
Pry the old seal out of the cover, being care-
ful not to damage the cover itseE Install the
new seal so that the open end of the seal is
toward the inside of the cover. Drive the seal
into place using a seal driver. If the seal is to
be replaced with the cover removed, support
the rear of the cover while driving the seal
into place.
Seal installation with the cover removed
Soal installation with the cover Installed
ENGINE AND ENGINE REBUILDING
Timing Chain
REMOVAL AND INSTALLATION
1. Set the engine to top dead center with
the number one cylinder on its compression
stroke (both valves closed).
2. Remove the timing cover as previously
outlined.
3. Remove the three bolts from the cam-
shaft sprocket and pull the sprocket off of the
camshaft. Lower the sprocket and remove the
camshaft sprocket and chain.
4. Check the camshaft and crankshaft
sprockets for wear. It is best to replace the
timing set (chain and sprockets) together. If
you do not have a puller to remove the crank-
shaft sprocket, replacement of only the cam
sprocket and chain will usually result in a sat-
1963-79 timing mark alignment—with steel cam-
shaft gear
1963-79 timing mark alignment—with nytwHe-
camshaft gear
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