Mitsubishi Heavy Industries S3L, Руководство по обслуживанию

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SERVICE DATA
2-2
1. Maintenance service data
1.1 General
1.2 Basic engine
Table 2-1 Maintenance service data table - General Unit: mm [in.]
Inspection point Nominal Standard Limit Remark
Maximum rotation speed
(rated rotation speed used as reference)
(Varies depending on specification of desti-
nation)
Minimum rotation speed
Compression pressure (at 290 min
-1
)
2.9 MPa
{30 kgf/cm²}
[421 psi] or above
2.6 MPa
{27 kgf/cm²}
[377 psi] or less
When oil and water temperatures
at 20 to 30°C [68 to 86°F]
Lubricating oil
pressure
Rotated speed
0.29 to 0.39 MPa
{3.0 to 4.0 kgf/cm²}
[42 to 57 psi]
Oil temperature
at 60 to 70°C [140 to 158°F]
Low idling speed
0.098 MPa
{1.0 kgf/cm²}
[14 psi]
Valve timing
Inlet
open BTDC 15°
With 2 mm [0.079 in.] clearance
on valve side, when cold.
Values are only for checking
valve timing and are different
from the actual ones.
closes ABDC 41°
Exhaust
open BBDC 54°
closes ATDC 10 °
Valve clearance
Inlet 0.25 [0.0098]
When engine is cold
Exhaust 0.25 [0.0098]
Fuel injection timing (before TDC) 17°
Table 2-2 Maintenance service data table - Basic engine (1 / 3) Unit: mm [in.]
Inspection point Nominal Standard Limit Remark
Rocker arm
Rocker arm inside diameter
ø 18.9
[0.744]
18.910 to 18.930
[0.7445 to 0.7453]
Rocker shaft outside diameter
ø 18.9
[0.744]
18.880 to 18.898
[0.7433 to 0.7440]
Clearance between rocker arm and rocker
shaft
(oil clearance)
0.012 to 0.050
[0.0005 to 0.0020]
0.200
[0.0079]
Replace rocker arm
Valve
Valve stem outside diam-
eter
Inlet
ø 6.6
[0.260]
6.565 to 6.580
[0.2585 to 0.2591]
6.500
[0.2559]
Exhaust
ø 6.6
[0.260]
6.530 to 6.550
[0.2571 to 0.2579]
6.500
[0.2559]
Valve guide inside diam-
eter
Inlet
ø 6.6
[0.260]
6.600 to 6.615
[0.2600 to 0.2604]
Exhaust
ø 6.6
[0.260]
6.600 to 6.615
[0.2600 to 0.2604]
Clearance between valve
stem and valve guide
Inlet
0.020 to 0.050
[0.0008 to 0.0020]
0.100
[0.0039]
Replace valve and valve
guide
Exhaust
0.050 to 0.085
[0.0020 to 0.0033]
0.150
[0.0059]