TM 5-4320-302-14
6-15.
CYLINDER (CONT)
Location/Item
Action
Remarks
Pistons are available in two oversizes:
NORMAL AND OVERSIZED
PISTON DIAMETER
inches
PISTON DIAMETER
(millimeters)
Normal
3.9351 to 3.9358
(99.951 to 99.969)
First oversize
3.9548 to 3.9555
(100.451 to 100.469)
Second oversize
3.9744 to 3.9752
(100.951 to 100.969)
f.
Check that top and bottom joint faces are smooth and flat. If severely damaged,
replace cylinder and/or piston if necessary. If joint faces have only minor nicks or
burrs or minor high spots, repair.
4.
Cylinder
Replace a cylinder and/or piston if:
replacement
It is cracked, severely scored, or has a high ridge at the top of its inner surface.
Out-of-round exceeds the tolerable limits.
Cylinder bore exceeds the tolerable limits.
6-102