TM 5-4320-302-14
6-15.
CYLINDER (CONT)
Location/Item
Action
Remarks
REPAIR
5. Cylinder
Remove slight ridges, score marks, and
Criss-cross
honing
glaze with a hone equipped with 120-grit
pattern produces
stones. Work hone up and down rapidly
hone marks on a
the full length of the cylinder bore
45 degree axis,
several times in a criss-cross pattern.
which aids piston
movement and
helps prevent
formation of
ridges.
CLEANING
WARNING
Dry cleaning solvent is flammable and potentially dangerous to people and property. Do not use near
open flame, sparks, excessive heat, or on hot surfaces. Flash point of P-D-680 solvent is 1000 to 138°F
(38° to 590C). Use solvent in a well-ventilated area, and avoid inhaling fumes. If repeatedly exposed to
fumes, seek fresh air and immediate medical help. Avoid prolonged exposure of skin to solvent. Wash
exposed skin immediately and thoroughly.
Death or severe injury might result when compressed air is used to blow dirt from skin or clothing. Air
entering body openings is extremely dangerous. Compressed air used for cleaning shall not exceed 100
psi (690 kPa). Use goggles or face shield for eye protection. Do not direct airstream against skin.
6.
Cylinder
Reclean each repaired cylinder with P-D-680 dry cleaning solvent and dry with
compressed air. Remove any burrs.
ADJUSTMENT I
7.
Cylinder
Recheck cylinder bore and out-of-round on repaired cylinder as described in step 3.c.
Replace if necessary.
6-103
