Measuring Distortion Cylinder Block Top Surface - Mitsubishi Heavy Industries SL Series Service Manual

INSPECTION AND REPAIR OF BASIC ENGINE
4.12 Measuring distortion cylinder block top
surface
Refacing of cylinder block should be kept to an abso-
lute minimum.
Excessive grinding of the crankcase may result in
defects such as defective combustion and stamping
(contact between piston and valve).
Measure the distortion of the crankcase top surface with a
straight edge and feeler gauge. If the measurement exceeds
the limit, grind the top surface with a surface grinder.
Item
Distortion of cylinder block
top serface
6-18
Standard Limit
0.05 mm [0.0020 in.] 0.10 mm
or less [0.0039 in.]
Measuring points and directions

Measuring distortion cylinder block top surface