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TM 5-4320-306-24
4-9. REPLACE/REPAIR CYLINDER ASSEMBLY (Continued)
5
Measure cylinder bore at levels 1 to 4 of engine
centerline axis A and crossline axis B. Cylinder
bore should be 3.9370 to 3.9457 inches (100.0 to
100.22 mm). If 3.9488 to 3.9575 inches (100.3 to
100.52 mm) wear limits have been reached or
exceeded, replace cylinder and/or piston.
6
If measurements on axis A and axis B are
different, cylinder is out-of-round or has high
spots. Replace cylinder and/or piston as
necessary.
7
Check that top joint face (1) and bottom joint face
(2) are smooth and flat If severely damaged,
replace cylinder (3) and/or piston. If joint faces
have only minor nicks or burrs or minor high
spots, repair.
8
Replace a cylinder and/or piston if:
a.
It is cracked, severely scored, or has a high
ridge at the top of its inner surface as
described in step 3.
b.
Out-of-round exceeds the limits described
in step 4.
c.
Cylinder bore exceeds the limits described
in step 4.
4-67
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