TM 5-4320-302-14
6-20. CRANKSHAFT ASSEMBLY (CONT)
Location/Item
Action
Remarks
22. Crankcase
Measure bore with precision micrometer. Measure-
bore drive
ment should be 2.4392 to 2.4399 inches (61.955
shaft bearing
to 61.974 mm). If measurement is not within
these tolerance limits, replace crankcase.
23. Cylinder seats
Inspect seats. Make sure they are smooth and
flat. Use a steel straightedge to check flatness.
If seats are damaged beyond repair, replace
crankcase. If seats can be ground smooth or
have minor nicks or burrs, repair in accordance
with REPAIR instructions.
6-173
