GOVERNOR ARM
GOVERNOR SHAFT YOKE
(%moth
side
toward
cup)
ROLL
PIN
FITS INTO
HOLE
IN
CUP
BE SURE THAT
OIL
PASSAGES ARE OPEN
GOVERNOR
CUP
8343
GOVERNOR
LL
/2"
FALLEN OUT
FIGURE 106. GEAR COVER ASSEMBLY
GOVERNOR
CUP
INSTALL OIL SEAL
FLUSH WITH THIS
SURFACE
THIS
SURFACE MUST
BE CLEAN BEFORE
INSTALLING SEAL
FIGURE 107.
GEAR
COVER OILSEAL
m
WHEN
GOVERNOR
IS
GOVERkOR CU
GOVERNOR FLY
BAL
Aeo=
El
FIGURE 108. GOVERNOR CUP
To remove the governor cup, remove
the
snap ring
from the camshaft center pin and slide the cup off. Be
sure to catch the ten flyballs that will fall out when the
cup is removed. Figure
108
shows the governor cup.
Repair
Replace any flyballs that have flat spots or grooves.
Replace the cup
if
the race surface is grooved or
rough. The governor cup must be a free spinning fit
on the camshaft center pin, but should be replaced
if
excessively loose or wobbly.
The camshaft center pin extends
out
3/4
inch
(19
mm) from the end of the camshaft. This distance
provides an in-and-out travel distance of
7/32
inch
(5.6 mm) forthe governor cup, as illsutrated. Hold the
cup against the flyballs when measuring. The cam-
shaft center pin cannot be pulled outward or removed
without damage. If the center pin extends out too far,
the cup will not hold the flyballs properly. If
the
dis-
tance is less than
7/32
inch
(5.6
mm), the engine will
race, especially at no load; remove the center pin and
press in a new pin.
Installation
To install the governor assembly, tip the front
of
the
,
unit upward. Set the flyballs in their recesses and
position the governor cup on its shaft. Finally, brush
with heavy grease and install
the
snap ring on the
center
pin.
PISTONS,
RINGS, CONNECTING
RODS
DJ
engines use cam-ground aluminum pistons. Each
piston is tapered and fitted with three compression
rings and an
oil
control ring. Full-floating piston pins
connect the piston to its connecting rod. The pinsare
held
in
place with a snap ring at each end. The lower
end of each connecting rod contains half-shell preci-
sion bearings; the upper end, semi-finished bushings.
Some engines are fitted with
0.005
inch (0.127 mm) oversize pis-
tons at the factory. These engines are marked with an
E
following
the
engineserial number.
Use0.005
inch (0.127 mm) oversize rings
for
these pistons.
82
Redistribution or publication of this document,
by any means, is strictly prohibited.
To Next Page
Loading...
Need help?
General
