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Oil clearance can be easily
measured by using a "Plastigage."
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When using a "Plastigage," perform
measurement in the following procedure.
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1.Fully wipe oil off the
outside diameter of the crankshaft and inside diameter of
the
bearing.
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2.Assemble the
crankshaft.
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![](../../../img/11/AK502747AA00ENG.png)
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3.Place a Plastigage in
length equal to the bearing width on the journal shaft
straight
in alignment with the shaft centre. 4.Carefully
install the bearing cap and tighten the bolt according to
the main point
of installation >>B<<. 5.Remove
the bolt, and then carefully remove the crankshaft bearing
cap.
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![](../../../img/11/AK502748AA00ENG.png)
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6.Measure the crushed
Plastigage width (area most widely crushed) using a scale
printed
on the Plastigage bag. Standard value: 0.012
- 0.030 mm Limit: 0.1 mm
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1.Visually check the
cylinder block for scratch, rust and corrosion. Use a flaw
detecting
agent to check for cracks. If it is found faulty, repair or
replace it.
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![](../../../img/11/AK502746AA00ENG.png)
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2.Measure distortion on the
top surface of the cylinder block using a straight edge and
thickness gauge. If distortion exceeds the limit, grind
and repair it. A gasket or the like must not be adhered
to the top surface of the cylinder block during
measurement. Distortion on
bottom
Standard value: Within 0.05
mm Limit: 0.2 mm Grinding limit: 0.2
mm
3.Check the cylinder wall for
scratch or seizure. If there is any defect, replace the
cylinder block.
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![](../../../img/11/AK503371AC00ENG.png)
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4.Measure the bore and
cylindricity of the cylinder using a cylinder gauge. If
the cylinder is excessively worn, repair the cylinder and
replace the piston and piston
rings. Measuring points are as shown in the
illustration. Standard
value
Cylinder bore: 86 mm
<4B11> Cylinder bore: 88 mm
<4B12> Cylindricity: 0.15
mm
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