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231 V 6 ENGINE
.I. CODE C
6A3-9
Fig. 6A3-18 Installation of Timing Chain and Sprocket
sprocket hubs. See Fig. 6A3-18.
4. Assemble slinger on crankshaft with I.D. against
sprocket (concave side toward front of engine). See Fig. 6A3-
19.
5.
Install
camshaft
sprocket
bolts
torque
to
specifications.
6. Install camshaft thrust button, spring and timing
chain dampers.
7. Install timing chain cover.
CAMSHAFT
Removal
1. Remove intake manifold.
2. Remove rocker arm covers.
3. Remove rocker arm and shaft assemblies, push rods
and valve lifters.
4. Remove timing chain cover, timing chain and
sprocket.
5. Align timing marks of camshaft and crankshaft
sprocket. This avoids burring of the camshaft journals by the
crankshaft during removal. Slide camshaft forward out of
bearing bores carefully to avoid marring the bearing surfaces.
Installation
1. When replacing camshaft, take particular care to
avoid marring the bearing surfaces.
2. Install by reversing above procedures.
CAMSHAFT BEARING
Bearing Removal
Care must be exercised during bearing removal and
installation, not to damage bearings that are not being
replaced.
1. Remove camshaft and crankshaft.
2. Assemble puller screw to required length.
3. Select proper size expanding collet and back-up nut.
Fig. 6A3-19 Oil Slinger Installation
4. Install expanding collet on expanding mandrel. Install
back-up nut.
5. Insert this assembly into camshaft bearing to be
removed. Tighten back-up nut to expand collet to fit I.D. of
bearing.
6. Thread end of puller screw assembly into end of
expanding mandrel and collet assembly.
7. Install pulling plate, thrust bearing, and pulling nut
on threaded end of puller screw.
8. Bearing can then be removed by turning pulling nut.
See Fig. 6A3-20.
Make certain to grip the 5/8" hex end of the puller screw
with a wrench to keep it from rotating when the pulling nut
is turned. Failure to do this will result in the "locking upWof
all threads in the pulling assembly and possible over
expansion of the collet.
9. Repeat the above procedure to remove any other
bearings, except the front bearing, which may be pulled from
the rear of the engine.
When removing rear cam bearing, it is necessary to
remove welch plug at the back of cam bore. However, if only
the front bearing is being replaced, it is not necessary to
remove the engine or welch plug. The front bearing can be
removed by using a spacer between the pulling plate and the
cylinder block.
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