Piston, Connecting Rod And Cylinder Liner - Mitsubishi 6M70 Workshop Manual

PISTON, CONNECTING ROD AND CYLINDER LINER

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Inspection: Piston protrusion from crankcase top surface
• The amount of piston protrusion affects engine performance and
must therefore be inspected without fail.
• Set the piston at the top dead center.
• Make the measurement at the two measurement points on the
top face of the piston and calculate the average value.
• If the average value deviates from the standard value, check the
clearances between all relevant parts.
Inspection: Connecting rod end play
• Measure the end play for every connecting rod.
• If the measurement exceeds the limit, replace the defective
part(s).
Inspection: Cylinder liner flange protrusion and step height
between adjacent cylinder liners
• Install so that it does not run onto the cylinder liner flange
and tighten and
• Measure the cylinder liner flange protrusion.
• If the measurement deviates from the standard value, inspect
the installation and replace the defective part(s).
• If the difference in the adjacent flange protrusion deviates from
the standard value, replace the defective part(s) upon checking
the installed condition.
CAUTION
• If the cylinder liner flange protrusion is not within the speci-
fied value, the contact pressure of the cylinder head gasket
against the bore of the cylinder will not be high enough to
prevent gas leakage.
to the torque of 49 N m {5 kgf
·
m}.
·