Westerbeke 6.5 SBCG-60HZ Service Manual page 56

PISTONS AND CONNECTING RODS
Installing the Piston Assembly
Apply an ample amount of oil to the outside surfaces of the
piston and the piston rings. Position the piston rings and oil
ring (side rail spacer) end gaps as shown.
FRONT+
~
!J
112 SPACER
~
-:;::::>
'\SIDE RAIL
Insert the piston and connecting rod assembly into the
cylinder, working from the arrow mark on the piston top
toward the camshaft
sp~;ocket
side.
FRONT
ARROW'
MARK
Securely pressing the piston ring with the ring band, insert
the piston and connecting rod assembly into the cylinder.
Keep in mind that the piston ring may be damaged if hit too
strongly.
PISTON RING
BAND INSTALLER
LUBRICATE WITH OIL
Crankshaft/Bearing Assembly
When the bearings are to be replaced, select the appropriate
bearings for assembly according to the identification marks
for the crankshaft and the connecting rod.
CRANKSHAFT
N0.3
N0.2
N0:1
CRANKSHAFT PIN DIAMETER
Identification marks
(1) //\A
(2)
GB
(3)
cc
Journal Diameter
1.4171 ·1.4173in (35.995 • 36.000mm)
1.4167 ·1.4171in (35.985 • 38.995mm)
1.4165 ·1.4167in (35.980 • 35.985mm)
CONNECTING ROD BIG END INNER DIAMETER
Identification Marks Big End Inner Diameter
1.5354 ·1.5356in (39.000 • 39.005mm)
I 1.5356 ·1.536Din (39.005 • 39.015mm)
IT 1.5360 ·1.5362in (39.015 • 39.020mm)
CONNECTING ROD BEARING THICKNESS
Identification Color
Brown
Blue
Bearing Thickness
0.0586 • 0.0588in (1.488 ·1.493mm)
0.0588 • 0.059Din (1.493 ·1.498mm)
0.0590 • 0.0592in (1.498 ·1.503mm)
CONNECTING ROD BEARING SELECTION TABLE
Crankshan Pin
Identification Marks
(1)
1/\
(2)
(3)
IDENTIFICATION
MARK
B
[
A
8
c
CONNECnNG ROD
Connecting Rod Bearing
Identification Marks
I
li
m
I
n
m
I
li
m
STOPPER
NOTCH
Brown
Brown
Brown
Blue
Blue
Blue
IDENTIFICATION
COLOR
Engines & Generators
45
CYLINDER
NUMBER