A Series Diesel Engine Base Engine Components 191
Check the top surface for damage caused by the
cylinder head gasket leaking between cylinders.
Check the top surface for flatness between each
cylinder.
Limits
Variance: Standard: 0.03 mm [0.0012 in]
Worn Limit: 0.15 mm [0.006 in]
Note : Do not proceed with the in-chassis overhaul if
the cylinder block head surface is damaged or
not flat.
Main bearing Preliminary inspection
Remove the pan and suction tube.
Perform a visual inspection of the main bearings and
crankshaft journals. Remove the No. 2 and 3 caps and
check the journals for signs of overheating, deep
scratches or other damage. If there is no damage,
there is no need to pull the other caps at this time.
Inspect the main bearing caps for dents, cracks, or
other damage.
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