TM 10-3950-672-24-2
There are a number of power related problems including
excessive oil consumption, smoke, blow-by, and poor
performance that can be caused by inadequate sealing
between the piston rings and the cylinder walls.
A blowby measurement can help detect the problem.
Verification of the damaged or worn component requires
visual/dimensional inspection of rings, pistons and
cylinder bore.
Piston wear can be the result of wear over a long period
of time or due to poor air intake system maintenance
over a short period of time. If necessary, troubleshoot
the air intake system.
During repair it is essential that the cylinder wall be
deglazed so that new rings will seat against the cylinder
wall. Failure of the rings to seat can result in high blow-
by and excessive oil consumption.
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