Installation Of Valve Spring Locks - Continental Motors GO-300-A Overhaul Manual

f. Slide gear (46) onto shaft so gear tongue is inserted
between rubber bushings.
g. Install and tighten nut (45) to 175 in. lb. torque.
Nut may be tightened further if necessary to align
nut slots with shaft cotter pin hole, but do not ex-
ceed 200 in. lb.
h. Install cotter pin (44),
11-8. CRANKCASE COVER. (See figure 13.)
a. Apply a film Penola anti-seize compound to
threads of plugs (35, 36) before installing. Install oil
pressure relief valve plunger (21), spring (20), a
new gasket (19) and the cap (18). Place new gaskets
(34) on two plugs (33) and install plugs in bottom
of cover (44).
b. Place oil pump drive gear (32) in lower bore of
cover, with square shaft end forward. Install driven
gear (31) in upper bore with slotted shaft end pro-
jecting rearward. Position pump cover (30) in place,
install tab washers (29) and screws (28).
c. Press a new seal (26) into the tachometer drive
housing (27) with the seal lip toward the mounting
flange. Impregnate a new gasket (24) with lightweight
Tite Seal compound and place it over the case studs.
Apply a film of Gredag No. 44 grease to the pro-
j e cting slotted shaft; then car efully slide the tach-
0meter drive housing over it into place. Secure the
housing with three sets of attaching parts (23, 22).
Install cap (25).
d. Place a new gasket (13) on the oil screen (12)
and screw the screen into the cover. Place a new
gasket (15) on the plug (14), and install plug in
screen (16). Place a new gasket (17) on the screen
(16); then install the assembly in the cover.
11-9. CYLINDERS. Assemble parts to make up each
of the six cylinder and valve assemblies in the man-
ner outlined below. Each cylinder should have a
different position number (1 through 6) stamped on
the edge of its base flange, which will be on top
when installed. These numbers should be found on
original cylinders, but they must be stamped on new
parts. Mter assembly, cylinders should be laid on
the bench in a row in the order of position numbers.
a. Spread a film of Lubriplate No. 707 grease on
the stems of the two valves previously lapped to
the cylinder seats, and insert these into their
guides.
b. Hold the valve stems, and lift the cylinder onto
a post which will support the valve heads. Clamp
the cylinder base flange to prevent it from riSing.
Again coat the valve stems with Lubriplate No. 707
grease.
c. Slide rocker shafts into the cylinder bosses.
d. Place the valve spring retainers over the guides,
cupped sides up, then install two sets of inner and
outer springs and the spring seat.
46
Figure 21. Installation of Valve Spring Locks
e. Using the same type of spring compressor as for
disassembly, compress, in turn, the sets of springs,
and insert the stem locks (See figure 21). The springs
should be depressed only enough to admit the keys
to
the stem grooves.
If
they drop too far, the locks
may be cocked and nick the stems when the springs
are released. Make sure that the locks are seated
in the stem grooves before releasing pressure. Do
not allow the compressing tool to cock the seats so
as to contact the stems, since they can cause score
marks.
f. Remove the cylinder from the assembly fixture.
Set it basedown on the bench, and with a rawhide
mallet, strike each valve stem firmly to seat the
keys.
g. Slide out the rocker shafts far enough to admit
the rocker arms. Coat the rocker arm feet with
Lubriplate 707, and install the rocker shafts and
arms.
All GO-300 model engines, with the exception of
a few very early model GO-300-A engines, are
equipped with INTAKE valve rocker arms which
do not have an oil squirt hole at the top of the
rocker arm foot. Extreme care should be
exercised to make certain that a rocker arm
without the oil squirt hole is NOT installed at
the EXHAUST valve position.