Mitsubishi S3L Service Manual page 77

INSPECTION
Measuring diagram
Figure 105 Measuring diameter of journal
2 mm (0.08 in.)
Figure 106 Journal fillet radius
Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
2 mm (0.08 in.)
Journal
•
•
ENGLISH
CYLINDER BLOCK, CRANKSHAFT,
PISTONS AND OIL PAN
2) Measure the diameter of the journal as shown
in the illustration to find the clearance between
the journal and main bearing.
Norminal
Item
size
Diameter of
52
journal
(2.05)
(standard)
Clearance
between
—
journal and
main bearing
3) If the clearance exceeds the limit, install a new
bearing and check the clearance again.
4) If the clearance still exceeds the limit, grind
the journal to 0.25 mm (0.009 8 in.), 0.50 mm
(0.019 7 in.) or 0.75 mm (0.029 5 in.)
undersize and use undersize main bearing.
Journal undersizes
Item Undersize
0.25
51.75
(0.009 8)
0.50
51.50
(0.019 7)
0.75
51.25
(0.029 5)
CAUTION
Grind all the journals of one crankshaft to the
same undersize.
Finish the journal fillets to a radius of 2 mm
(0.08 in.).
.Unit: mm (in.)
Standard Limit
51.985 to
52.000
—
(2.046 65 to
2.047 24)
0.030 to 0.077 0.100
(0.001 18 to (0.003
0.003 03) 94)
Unit: mm (in.)
Finish
0
0
(2.0374 )
-0.015
-0.00059
0
0
(2.0276 )
-0.015
-0.00059
0
0
(2.0177 )
-0.015 -0.00059
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