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TM 5-4320-304-14
TM 08922A-14/1
5-12. lNSPECT/REPAlR/REPLACE PISTON (Continued)
INSPECTION:
1
2
3
4
Inspect piston, piston skirt, and piston grooves for excessive wear and damage. Replace damaged
piston.
NOTE
Excessively worn pistons, rings, or cylinders may be an indi-
cation of abnormal maintenance procedures or operating
conditions. Check for and correct any abnormalities.
Examine piston (1) for scoring, fretting,
pitting, 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.
If piston is badly worn or damaged, check
cylinder for excessive out-of-round, high
spots, or other damage in accordance
with paragraph 5-11.
Measure piston diameter (1) along axes 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.
5-41
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