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Westerbeke Universal M-50 - Page 15

Westerbeke Universal M-50
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Item
Crankshaft alignment
Oil clearance between crank-
shaft journal and bearing
Front and
intermediate
Journal
0.0.
Rear
Front and
Bearing
1.0.
intermediate
Rear
Oil clearance between crank
pin and bearing
Crank pin
0.0.
Crank pin bearing
1.0.
Crank shaft side clearance
Under sizes of crankshaft
bearing and crank pin bearing
Oversizes of thrust bearing
Connecting Rod
Connecting rod alignment
Oil clearance between piston
pin and small end bushing
Piston
0.0.
Small end bushing
1.0.
(fitting)
WBRICATING SYSTEM
At idle
Oil pressure
speed
At rated
speed
Oil Pump
Rotor lobe clearance
Radial clearance between
outer rotor and pump body
End clearance between rotor
and cover
Oil Filter
Opening pressure of bypass
valve
ENGINE SPECIFICATIONS
M-30
0.02
mm
(0.0008 in.)
0.040 to
0.118
mm
(0.002 to 0.004 in.)
51.921
to 51.940 mm
(2.044 to 2.045 in.)
51.921
to 51.940 mm
(2.044 to 2.045 in.)
51.980 to 52.039 mm
(2.046 to 2.049 in.)
51.980 to 52.025 mm
(2.046 to 2.048 in.)
0.035 to 0.093 mm
(0.002 to 0.004 in.)
43.959 to
43.975
mm
(1.731
to 1.732 in.)
44.010
to 44.052 mm
(1.733
to 1.734 in.)
0.15
to
0.31
mm
(0.006 to
0.012
in.)
-0.02
mm,
-0.04
mm
(-0.008 in., -0.016 in.)
+0.2mm,
+0.4 mm
(+0.008 in., +0.016 in.)
0.02
mm
(0.0008 in.)
0.014
to 0.038 mm
(0.0006 to
0.001
in.)
23.002 to
23.011
mm
(0.905 to 0.906 in.)
23.000 to
23.013
mm
(0.905 to 0.906 in.)
1.0
kgf/cm
2
(14.2
Dsi)
3.0
to
4.5
kgf/cm
2
(43 to 64 psi)
0.10
to
0.16
mm
(0.004 to 0.006 in.)
0.11
to
0.19
mm
(0.004 to
0.007)
0.105
to
0.150
mm
(0.004 to 0.006 in.)
98 KPa
1.0
kgf/cm
2
(14.2
psi)
12
M-40
0.02
mm
(0.0008 in.)
0.040 to
0.118
mm
(0.002 to 0.004 in.)
51.921
to 51.940 mm
(2.044 to 2.045 in.)
51.921
to 51.940 mm
(2.044 to 2.045 in.)
51.980 to 52.039 mm
(2.046 to 2.049 in.)
51.980 to 52.025 mm
(2.046 to 2.048 in.)
0.035 to 0.093 mm
(0.002 to 0.004 in.)
43.959 to
43.975
mm
(1.731
to 1.732 in.)
44.010
to 44.052 mm
(1.733
to 1.734 in.)
0.15
to
0.31
mm
(0.006 to
0.012
in.)
-0.02
mm,
-0.04
mm
(-0.008 in, -0.Q16 in.)
+0.02 mm, +0.04 mm
(+0.008 in., +0.016 in.)
0.02
mm
(0.0008 in.,
0.014
to 0.038 mm
(0.0006 to
0.001
in.)
23.002 to
23.011
mm
(0.905 to 0.906 in.)
23.000 to
23.013
mm
(0.905 to 0.906 in.)
1.0
kgf/cm
2
(14.2
DSi)
3.0
to
4.5
kgf/cm
2
(43 to 64 psi)
0.04
to
0.13
mm
(0.002 to 0.005 in.)
0.11
to
0.19
mm
(0.004 to
0.007
in.)
0.105
to
0.150
mm
(0.004 to 0.006 in.)
98 KPa
1.0
kgf/cm
2
(14.2
psi)

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