Daedong DSC48, Workshop Manual, Page: 127 / 290

Apr. 2007
2
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DSC48
417W2A3A
► OIL CLEARANCE BETWEEN CRANKPIN AND
CONNECTING ROD BIG END BEARING
1. Put a strip of plastigage lengthwise in the center of the
crankpin.
2. Install the connecting rod cap and tightened the bolt to
the speci fi ed torque. Remove the cap again.
3. Measure the amount of fl attening with the scale and get
the oil clearance.
4. If the clearance exceeds the allowable limit, replace the
bearing.
417W2A1A
► REPLACING CRANKSHAFT BEARING 1
1. Press out the crankshaft bearing 1 using the replacing
tool.
2. Clean the cylinder block bore and crankshaft bearing 1.
And apply engine oil to them.
3. Install the crankshaft bearing 1 to the cylinder block so
that its seam faces the exhaust manifold side.
(1) Seam
(a) 4.2 ~ 4.5 mm
417W2A2A
► OIL CLEARANCE BETWEEN CRANKSHAFT
JOURNAL AND BEARING 2
1. Put a plastigage lengthwise in the center of the journal.
2. Install the bearing cap and tightened the bolt to the
speci fi ed torque. Remove the cap again.
3. Measure the amount of fl attening with the scale and get
the oil clearance.
4. If the clearance exceeds the allowable limit, replace the
bearing.
Factory spec. Allowable limit
Clearance
0.040 ~ 0.104 mm
0.002 ~ 0.004 in.
0.20 mm
0.008 in.
Journal O.D.
51.921 ~ 51.940 mm
2.044 ~ 2.045 in.
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Bearing 2 I.D.
51.980 ~ 52.025 mm
2.046 ~ 2.048 in.
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Factory spec. Allowable limit
Oil clear-
ance
0.025 ~ 0.087 mm
0.001 ~ 0.003 in.
0.20 mm
0.008 in.
Crankpin
O.D.
46.959 ~ 46.475 mm
1.849 ~ 1.830 in.
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Pin bearing
I.D.
47.000 ~ 47.046 mm
1.850 ~ 1.852 in.
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