TM 10-4320-310-14
5-12.
INSPECT/REPAIR/REPLACE PISTON (Continued)
INSPECTION:
1
Inspect piston, piston skirt, and piston grooves for excessive wear and damage. Replace damaged piston.
NOTE
Excessively worn piston, rings or cylinder may be an Indication of abnormal
maintenance procedures or operating conditions. Check for and correct any
abnormalities.
2
Examine piston (1) for scoring, fretting, piting, cracks
(especially on the interior surfaces), damaged ring
grooves (2) or lands (3), or for indications of
overheating. Repair slight scoring according to
repair procedure. Replace damaged piston.
3
K piston is badly worn or damaged, check cylinder for
excessive out-of-round, high spots, or other damage
in accordance with paragraph 5-11.
4
Measure piston diameter (1) along axis A and B. A
normal or new piston diameter should be 2.8724
inches (72.96 mm). If piston is out-of-round, replace
piston.
5-31