Figure 18
Figure 16
Installation of Breaker Cam on Camshafts
A - Governor Gear Assembly B - Governor Gear
A and B are Timing Marks
Shaft C - Governor Stop Screw
e. Place space flasher on stub shaft and slide
governor gear assembly into place.
f. Tighten bolting screws from outside of cylinder
block. This screw prevents governor gear from
sliding off stub shaft during assembly.
g. Rotate governor gear assembly to be sure
holding screw does not contact weight section of
gear.
Figure 19
Automatic Compression Release camshaft.
c. With camshaft in position, slide camshaft pill
through from bearing plate side and press into
power-take-off side of block. Figure 20.
Figure 17
d. Check camshaft end clearance. End clearance
Early Style
should be from .005 to .010. Use spacer
washers to shim camshaft to .005 to .010.
4. Valve Tappets and Camshaft
a. Turn cylinder block upside down and place
valve tappets in tappet guides. On Automatic
Compression Release engines, be sure the
shorter tappet is used on the exhaust side.
b. Before installing camshaft assembly in block,
breaker cam must be correctly inserted between
springs of spark advance systems to insure
proper spark timing. Spark timing marks (A and
B, Fig. 18) on cam and spark-advance side of
camshaft gear must coincide. Spread springs in
direction indicated) by arrows on flyweight and
insert cam. Figure 18.
Note:
Figure 20
Automatic Compression Release
Installing Camshaft
engines do not have a spark
advance mechanism.
74
