TM 9-2320-272-24-4
5-7. CYLINDER LINERS AND BLOCK MAINTENANCE (Contd)
Check cylinder liner (2) for a series of pit erosions (3) on the thrust or antithrust side of the cylinder
30.
liner (2) outside diameter. If pit erosions (3) are present, tag cylinder liner (2) for replacement.
Check cylinder liner (2) for visible cracks. As a rule, cylinder liners are highly resistant to vertical
31.
cracks or breakage. If cracks are present, tag cylinder liner (2) for replacement.
Check cylinder liner (2) for eroded surface (4). Moving coolant contacting the cylinder liner (2)
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outside diameter erodes the surface away and attacks the crevice seal. If surface is eroded (4),
tag cylinder liner (2) for replacement.
Check cylinder liner (2) for fretting of surfaces (6), and/or machined area. Top of cylinder liner
33.
bead has worn away on illustrated cylinder liner (2). If surfaces (6) have fretted, tag cylinder
liner (2) for replacement.
NOTE
Do not use wire brush on cylinder liners.
Steam, clean, or wash cylinder liner (2) in hot water and detergent. Scrub with bristle brush.
34.
Remove rust, scale, and corrosion from cylinder liner (2). If cylinder liner (2) is excessively rusted,
35.
scaled, or corroded, replace.
WARNING
Eyeshields must be worn when cleaning with compressed air.
Compressed air source will not exceed 30 psi (207 kPa). Failure to
do so may result in injury to personnel.
Blow cylinder liner (2) dry with compressed air.
36.
Apply generous coat of lubricating oil to cylinder liner (2) and let stand for five to ten minutes.
37.
Wipe oil from cylinder liner bore (1) with heavy paper towel. Gray and black residue will appear on
38.
towels.
Repeat steps 37 and 38 until black or gray residue no longer appears on towel.
39.
Apply lubricating oil lightly to cylinder liners (2) and wrap cylinder liners (2). Store in clean, dry
40.
location until installation.
NOTE
Cylinder liners must be checked at 60-70F (16-21C). New
cylinder liners with lubrite finish may be 0.0002-0.0006 in.
(0.005-0.015 mm) smaller than indicated due to lubrite coating.
41.
Check liner bore (1) with telescoping gauge. If measurement exceeds 5.5050 in. (139.830 mm), tag
cylinder liner (2) for replacement.
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