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INSPECTION AND REPAIR OF BASIC ENGINE

6-6

1.8 Measuring distortion of the bottom surface

of the cylinder head

&$87,21

Refacing of cylinder head should be kept to an abso-

lute minimum.

Excessive grinding of the cylinder head may result in

defects such as defective combustion and stamping

(contact between piston and valve).

With a straight edge placed on the bottom face of the

cylinder head, measure the bottom face distortion using a

feeler gauge. If the measurement exceeds the limit, grind the

bottom face using a surface grinder.

Measuring distortion of the bottom surface of the

cylinder head

1.9 Measuring push rod runout

Measure the runout of push rod. If the standard value is

exceeded, replace the push rod.

Measuring runout of push rod

Item Standard Limit

Bottom surface distortion

0.05 mm

[0.0020 in.]

0.10 mm

[0.0039 in.]

Measuring points

Item Standard Limit Remark

Push

rod

runout

Less than 0.3 mm

[0.012 in.]

0.3 mm

[0.012 in.]

Total indicated

reading

(TIR)

1/2L1/2L

Pushrod

Mitsubishi L2C Service Manual

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