Service manual
12C/12D
TWO
SERVICE
DATA
I
STANDARDS
AND
LIMITS
Component
Specified
Value
I
Standard
Repair
limit
inches(mm) inches(mm)
--------------------------
----~
CONNECTING
ROD
BEARING
Type
..................................
Aluminum
with
Black
Metal
Oil
Clearance
....................
0.0009-
0.0020(0.022-
0.052)
......
0
006
(0.15)
Under
Size
...............................
0.01,
0.02
(0.25,
0.50)
____________________
____c
____
____c
____
~---------
CONNECTING
ROD
Type
........................................
.Forged
1-Beam
Bend
and
Twist..
........................
Within
0.002
(0.05)
Big
End
Thrust
Clearance
....
0.004
-
0.014
(0.1
-
0.35)
CRANKSHAFT
Type
.......................................
Fully
Counterbalanced
Bend
........................................
.Within
0.001
(0.03)
End
Play
.............................
0.002-
0.007
(0.05-
0.175)
Journal
0.0
.......................................
1.693
(43)
......................
-0.006
(-0.15)
Pin
O.D
..............................................
1.575
(40)
......................
-0.006
(-0.15)
Bearing
Oil
Clearance
...................
(0.022-
0.052)
Under
Size
Rnishing
Journal
Under
Size
0.25
....................
1.6817-
1.6823
(42.715-
42.730)
0.50
....................
1.6719-
1.6724
(42.465-
42.480)
Pin
Under
Size
0.25
....................
1.5636-
1.5642
(39.715-
39.730)
0.50
....................
1.5537
-1.5543
(39.465-
39.480)
MAIN
BEARING
Type
..................................
Aluminum
with
Black
Metal
Oil
Clearance
.............................
No.
2:
Flanged
Metal
Under
Size
...............................
0.01,
0.02
(0.25,
0.50)
VAlVE
CAMSHAFT
Driving
Method
.................................
Gear
Drive
Front
Journal
...................................
Ball
Bearing
Journal
to
Cylinder
...................................................................
0.006
(0.15)
Block
Hole
Clearance
Lobe
Height..
..................................
1.078
(27.37)
......................
0.039
(1.0)
Major
Diameter
of
Cam
.................
1.078
(27.37)
......................
0.039(
-1.0)
(Intake
and
Exhaust)
Oil
Clearance
..............................................................................
0.006
(0.15)
Component
Specified
Value
I
Standard
Repair
limit
inches(mm)
inches(mm)
INJECTION
PUMP
CAMSHAFT
Driving
Method
.................................
Gear
Drive
Front
Journai.
......................
Ball
Bearing
(Front
&
Rear)
Lobe
Height..
........
;
..........................
1.18
(30.0)
........................
0.027
(0.7)
Major
Cam
Diameter
.........................
1.18
(30)
..............................
(-0.7)
---------·~
TAPPET
Outside
Diameter
...............................
0.75
(1
9)
Tappet
to
Cylinder
Block
Clearance
..........................................
0.006
(0.15)
PUSH
ROD
Bend
........................................
.Within
0.0118
(0.3)
Fuel
Solenoid
Cut-Off
Stroke
............
(10
±
0.5)
STARTER
MOTOR
Depth
of
Brush
Undercut..
...............
0.019
(0.5)
........................
0.008
(0.2)
Height
of
Brush
.................................
0.669
(17)
..........................
0.236
(6)
Spring
Pressure
........................
43
Lb/in'
(3
Kg/em')
Commutator
0.0
.............................
1.523
(38.7)
......................
-0.039
(-1.0)
Pinion
Shaft
End
Play
......................
0.014
(0.5)
NOT£:
T'ae
wrist pin used with the piston and connecting rods
has changed. The diameter
of
the wrist pin has been changed
from 18mm
to
21
mm.
Refer
to
WESTERBEKES Parts Bulletin #2010-2.
48