Slide the connecting
rod
with the needle bearings
and washer
up
and off the wrist pin, being careful
not to disturb the bearings. Place the connecting
rod
and the two wrist pin washers
in
position
in
the
piston cavity, aligned with the wrist pin boss.
1
1. Wrist pin washer
COB1137
Finish installing the wrist pin through the connect-
ing
rod
and the piston until the wrist pin contacts
the installed retaining ring. Check to
be
sure none
of the needle bearings have been disturbed and
pushed out of the connecting
rod.
Install a second
new retaining
ring.
Install piston rings
on
each piston. Tapered ring
must
be
installed
in
top groove. Spread each ring
with a ring expander just enough to slip it over the
head of the piston
and
down into place.
Coat the piston and cylinder bore with oil.
Place the piston
in
Ring Compressor,
PIN
339754,
(PIN 339755 for oversize pistons). Make certain
that the rings are correctly positioned
in
their
grooves with respect to the dowel pins. Damaged
pistons
and
broken rings may result from imper-
fect alignment of the
ring
gap and the dowel pins.
POWERHEAD
ASSEMBLY - 9.9/15
IMPORTANT: The piston rings must
be
correctly
located
on
their dowel pins to prevent permanent
powerhead damage.
Start the piston into bore of the cylinder with
deflector of the piston (sharp edge) toward intake
port side of the cylinder block.
2
1
1. Piston, deflector
32406
2. Intake
port
side
IMPORTANT: Loosely install the cylinder head
to prevent the pistons from falling out.
7
If
removed, oil and press a new lower main bear-
ing onto the crankshaft. When pressing on the
bearing, support the crankshaft between the two
lower counterweights and press against the let-
tered side of the bearing.
Install the retaining ring
in
groove of the crankshaft with sharp edge of the
ring facing away from bearing.
199
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