-------------CHAPTER1--------------
2. Service type Set - consists of:
3 Compression
Rings
1
Oil
Control Ring
1
Oil
Control Ring Expander (Coiled)
TOP
COMPRESSION
RING
Bright chrome finish, Keystone Ring.
2ND COMPRESSION
RING
Bright chrome finish, step on inside
diameter. Assemble with step facing up-
wards.
3RD COMPRESSION RING
Dull black finish, step on outside diameter,
facing downwards and non-slotted expander
behind ring.
OIL CONTROL
RING
Install either way upwards with expander
behind ring.
3. Space the rings on piston
as
follows:
Coil-Type Expander -
Position gap in line with piston dome iden-
tification mark, Figure
54.
Oil
Control
Ring
-
Position gap
90°
from piston dome iden-
tification mark.
Lower Compression
Ring
-
Position
gap
18()0
from oil control ring gap.
Remaining Compression Rings -
Position
gap
1200
intervals from lower com-
presssion ring.
PISTON ASSEMBLY
1.
Lubricate all parts generously with engine oil dur-
ing assembly. All parts
of
the piston and connec-
ting rod assembly
are
shown in Figure
56.
Use
the illustration for reference during assembly.
2. Assemble the piston
to
the connecting rod with
the notch on the piston crown and the pip on the
connecting rod in line
as
shown in Figure
55.
If a
piston
is
used the connecting rod piston pin
bushing may have
to
be
reamed
or replaced
to
provide the specified pin-to-bushing clearance
(when properly fitted the pin should rotate snug-
F.
ly
in
both the rod and piston). Before installing
the piston
in
the block
be
sure the piston pin
re-
tainers
are
fully seated
in
the piston grooves.
Figure
55
Positioning Piston
with
Connecting Rod
1.
Connecting
Rod
and
Cap
Numbers
2.
Notch
on
Piston
3.
Notch
to
Front
of
Engine
INSTALLATION
1.
Turn the crankshaft to position the No. 1
crankpin at the bottom
of
its stroke.
2.
Liberally lubricate the No. 1 piston with engine
oil. Compress the rings with a Piston
Ring
Com-
pressor
as
shown in Figure
57.
Install the bearing
liner
in
the connecting rod.
3.
Position the piston
and
rod assembly in the
cylinder block with the identification mark on the
piston facing the front of the engine.
33
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