~VRNOR
CUP
ROLL
P
ROTATE
GOVERNOR CUP
SO
THAT ROLL PIN'
FITS
INTOTHE
HOLE IN PLASTIC
BUSHED
CUP.
OVERNOR
ARM
GOVERNOR
SH
GOVERNOR
SHAFT
YOKE
AFT
IF
FEELEW
WILL
ENTER
HOE
10
(13
mn).
BALL
HM
FALLEN
OUT
I
FIGURE
41. GEAR COVER ASSEMBLY
GOVERNOR
CUP
With thegearcover removed, thegovernorcup can be
taken off after removing the snap ring from the
camshaft center pin. Catch the flyballs while sliding
the cup off. See Figure
41.
Replace any flyball that is grooved or has aflat spot. If
the arms of the ball spacer are worn or otherwise
damaged. replace the entire timing gear set. The
governor cup must spin freely on thecamshaft center
pin without excessive loosenessor wobble. If the race
surface
of
the cup is grooved or rough, replace
it
with
a new one.
When installing the governor cup, tilt the engine
so
the gear is up, put the flyballs in placeand install the
WHEN GOVERNOR
IS
PROPERLY
ASSEMBLED
THE
DIMENSION SHOWN
ON DRAWING
WILL
BE
AS
INDICATED.
CENTER
PIN
GOVERNOR
CUP
GOVERNOR
FLYBALL
88
FIGURE
42.
GOVERNOR
CUP
cup and snap ring on the center
pin,
Figure
42.
The camshaft centerpin extendsout 3/4inchfromthe
end of the camshaft. This distance provides and
in
and out travel distance of
7/32
inch for the governor
cup, as illustrated. Hold the cup against the flyballs
when measuring. If the distance is less (the engine
may race, especially at no load), remove the center
pin and press a new pin in only the required amount.
otherwise, grind
off
the hub of the cup as required.
The camshaft center pin cannot be pulled outward
nor removed without damage.
If
the center pin
.
extends out too far, the cup will not hold the flyballs
properly.
TIMING
GEARS
If replacement of either the crankshaft gear or the
camshaft gear becomes necessary, install both gears
new, never one only. Use agear pulling ring to remove
the crankshaft gear. Be sure to remove the snap ring
first.
The camshaft gear is pressed on and keyed to the
Camshaft. The camshaft and gear must be removed as
an assembly after first removing the crankshaft gear
lock ring and washer. Before removing the camshaft
and gear assembly, remove the cylinder head and
valve assemblies. Remove the operating plunger for
the breaker points. Remove the fuel pump and
tappets.
The camshaft may be pressed out of the gear by use of
a hollow tool or pipe which will fit over the camshaft
center pin.
Do
not press on thecenter pin or damage
it
in any way. The governor ball spacer is a press fit to
the camshaft gear.
When pressing a camshaft gear onto the camshaft, be
sure the gear is started straight and that the key is
properly in place. Install the governor cup assembly
before installing
the
camshaft and gear in the engine.
47
Redistribution or publication of this document
by any means, is strictly prohibited.
Redistribution or publication of this document
by any means, is strictly prohibited.
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