Chevrolet 30 Series 1967 Service Manual page 314

ENGINE 6-34
Fig. 15V— Installing O il Seal (C o ver Installed) 283 and 327
Without Cover Rem oval
1. With torsional damper removed, pry seal out of
cover from the front with a large screw driver,
being careful not to damage the surface on the
crankshaft.
2. Install new seal so that open end of seal is toward
the inside of cover and drive it into position with
Tool J-8340 on 283 and 327 cu. in. engines (fig. 15V)
or Tool J-22102 on 366 cu. in. engines (fig. 16V).
Timing Chain and/or Sprockets (283 and 327)
Replacement
1. Remove torsional damper and crankcase front cover
as outlined.
2. Crank engine until marks on camshaft and crankshaft
sprockets are in alignment (fig. 17V).
3. Remove camshaft sprocket to camshaft bolts.
4. Remove camshaft sprocket and timing chain together.
Sprocket is a light press fit on camshaft. If sprocket
does not come off easily, a light blow on the lower
Fig . 16V—Installing O il Seal (C over Installed) 366
Fig. 17V—Timing Sprocket Marks
edge of the sprocket (with a plastic mallet) should
dislodge the sprocket.
5. If crankshaft sprocket is to be replaced, remove
sprocket using Tool J-5825 (fig. 18V). Install new
sprocket using Tool J-5590 (fig. 19V).
. Install timing chain on camshaft sprocket. Hold the
6
sprocket vertical with the chain hanging down and
orient to align marks on camshaft and crankshaft
sprockets (fig. 20V).
NOTE: Do not attempt to drive sprocket on
camshaft as welsh plug at rear of engine can
be dislodged.
Fig . 18V—Removing Crankshaft Sprocket
CHEVROLET TRUCK SERVICE M ANUAL