Westerbeke ATOMIC 4 Operation And Maintenance Manual page 76

MODEL
NAME
Blue Jacket Twin
Atomic Four
Utility Four
Super-Four
Unimite Four
Arrow
Bluefin
Marlin
Tarpon
Knight
Little King
Big King
MODEL
NAME
Blue Jacket Twin
Atomic Four
Ut ility Four
Super-Four
Unimi te Four
Arrow
Bluefin
Marlin
Tarpon
Knight
Little King
Big King
MODEL
NAME
Blue Jacket Twin
Atomic Four
Utility Four
Super-Four
Unimite Four
Arrow
Bluefin
Marlin
Tarpon
Knight
L1 tt Ie King
Big King
MODEL
NAME
Blue Jacket Twin
Atomic Four
Utility Four
Super-Four
Unimite Four
Arrow
Bluefin
Marlin
Tarpon
Knight
Table
7
VALVE AND PISTON DATA
PISTON PISTON
VALVE SEAT VALVE TAPPET VALVE STEM
CLEARANCE RING ANGl.E CLEARANCE
CLEARANCE IN GUIDE
GAP
INTAKE AND
(!C I,D
EXHAUST INT. EXH.
INTAKE EXHAUST
.0015"
.009 - .014"
45 0
.008" .010"
.0015 - .002" .0015 - .002"
.0015" .007 - .015"
45 0
.008" .010"
.001
-
.0015" •. 0015 - .0025"
.002" .008 - .013"
45 0
.006"
.008" .0015 - .002" .0015 - .002"
.0015"
.010 - .015"
45 0
.010" .012"
.0015 - .002"
.0015 - .002"
.003" .015 - .020"
30 0
.010" .010" .001 - .0015" .0025 - .003"
.0025 - .003"
.015 - .020"
30 0
.010"
.014"
.0025 - .003" .0025 - .003"
.0025 - .003" .015 - .020"
30 0
.010"
.014" .0025 - .003"
.0025 - .003"
.004
-
.0045"
.015 - .020"
30 0
.012" .016" .0025 - .003" .0025 - .003"
.004
- .0045"
.015 - .020"
30 0
.012"
.016"
.0025 - .003" .0025 - .003"
.005
-
.0055" .015 - .020"
30 0
.012"
.018" .0025 - .003"
.0025 - .003"
.0006 - .001" .010 - .020"
46 0
.010'!llt.020"
.001
- .0027" .0017 - .0034"
.0011 - .0029" • 015 - .025"
30 0 Int •
.020" .001
-
.0024"
45 0
Exh. .022" .001 - .0024"
CYLINDER HEAD
Table 8
TORQUE WRENCH TENSION
In Foot/Pounds
CONNECl'ING ROD MAIN BEARINGS
MAIN BEAR INGS MANIFOLD SPARK
BOLTS OR NUTS NUTS FRONT
&
INTER. CENTER
&
REAR STUDS PLUGS
40 40 60
a~
33
60
25
60
55
50
100
40 42 77
60
39
70
60
39
70
65 56 70
65 56 70
65 56 70
65
33
65
95-105
45:"'50 95-105
Table
9
BEARING DATA
CONNECTING ROD
CONNECTING ROD
CRANK8W.Fl' MAIN
CLEARANCE END PLAY
BEARING
(Diameter)
.0015 - .0025 .002 -
.001
- .0025
.004 -
.0015 - .0025 .002 -
.002
- .003
.002 -
.001 - .0015
.005 -
.0015 - .002
.005 -
.0015 - .002
.005 -
.002
- .0025 .005 -
.002
- .0025 .005 -
.0025 -
.Ooa
.005 -
.001
-
.00 2 ).008 -
.0006 - .0026
.005 -
INLET VALVE
OPENS
50
after TDC
50
before TDC
5°
after TDC
50
after TDC
50
before TDC
50
before TDC
5°
before TDC
50
before TDC
50
before TDC
50
before l'DC
CLEARANCE
iDiamp.tp.r\
.003
.0015 - .0025
.008 .001 - .0025
.003
.0015 - .002
.003 .002 - .003
.010 .002 - .0025
.010 .0015 - .003
.010
.0015 - .003
.010 .0015 - .003
.010 .0015 - .003
.010
.0015 - .003
.014 .001 - .004
.015 .0009 - .0029
Table
11
VALVE TIMING
INLET VALVE
CLOSES
45 0 after LDC
a
oo after LDC
50 after LDC
55°
after LDC
55 0 after LDC
55°
after LDC
55°
after LDC
55°
after LDC
55°
after LDC
55°
after LDC
TDC means TOP DEAD CENTER
LDC means LOWER DEAD CENrER
See Table
7
for Valve Tappet Clearance
-65-
60
35 35
60
35
30
60 40
35
100
45
35
77
35
30
60
30
60
30
60
30
60 30
60
30
65 30 23
95-105
23-28 15:"20
CRANKSH!Fl' THRUST CAMSH!Fl' BEARING
CLEARANCE AT CLEARANCE
THRUST BEARING (Diameter)
.002 - .003
.0025 - .003
.002 - .003
.002 - .0025
.002 - .003 .0025 - .003
.003 - .004 .0025 - .003
.002 - .004 .0015 - .0025
.002 - .004 .0015 - .0025
.002 - .004 .0015 - .0025
.002 - .004 .0015 - .0025
.002 - .004 .0015 - .0025
.002 - .004
.0015 - .0025
.002 - .006 .0015 - .0035
.004 - .008 .001
- .003
EXHAUST
VALVE
EXHAUST VALVE
OPENS
CLOSES
40 0
before LDC
TDC
45°
before LDC
10 0 after TDC
40 0 before LDC TDC
50 0
before LDC TDC
45 0 before LDC
15°
after TDC
45°
before LDC
15°
after TDC
45 0
before LDC
15°
after TDC
45°
before LDC
15°
after TDC
45°
before LDC
15°
after TDC
45°
before LDC
15°
after TDC