TM 5-4320-302-14
6-15.
CYLINDER (CONT)
Location/Item
Action
Remarks
3.
Cylinder
a.
Clean thoroughly with P-D-680 solvent. Dry with compressed air. Inspect for
damage, warpage, rust, or corrosion. If severely damaged or warped, replace
complete with new piston as necessary.
b.
Inspect cylinder for cracks, scoring, glazing, a ridge on the upper portion of inner
surface, or adhering metal particles (fretting) on outer surface.
c.
Set precision bore gage to normal or oversized cylinder bore:
NORMAL AND OVERSIZED
CYLINDER BORE
CYLINDER BORE
WEAR LIMIT
inches
inches
CYLINDER BORE
(millimeters)
(millimeters)
Normal
3.9370 to 3.9457
3.9488 to 3.9575
(100.0 to 100.22)
(100.3 to 100.52)
First oversize
3.9567 to 3.9654
3.9685 to 3.9772
(100.5 to 100.72)
(100.8 to 101.02)
Second oversize
3.9764 to 3.9850
3.9882 to 3.9969
(101.0 to 101.22)
(101.3 to 101.52)
6-100