TM 55-2840-251-23
SECTION VIII GENERAL MAINTENANCE PROCEDURES (Continued)
1-77 CLEANING (Cont)
4. Specific Parts (Cont) j. P3 Air Filter Element (1)
Remove filter element (Task 10-5).
(2)
Shake element for 5 minutes in clean,
unused Petroleum Solvent (E.8).
(3)
Allow element to drain and dry in a clean
environment.
(4)
Inspect (Paragraph 1-78).
(5)
Repeat cleaning and visual inspection
until element is considered serviceable.
NOTE
Use clean, unused Petroleum Solvent
(E.8) each time.
1-78 INSPECTION
1. General
Damage to engine parts may result from improper
clearance, lack of lubrication, undesired movement of
parts which are bolted or pressed together, uneven load
distribution, heat, shock, extension of minor scratches,
tool marks, grinding cracks, nicks, etc. Damage to
engine parts may also result from the presence of
foreign matter such as grit, chips, moisture, chemicals,
etc., or from improper technique during assembly or
disassembly.
While it is frequently possible to repair a damaged part
so that it may be safely reinstalled, it is important that
the cause of the damage be determined, and corrected
if possible. Otherwise, more serious consequences may
result.
2. Measuring Devices
When an inspection procedure requires a very accurate
measurement, a micrometer, vernier or dial test
indicator must be used. If a micrometer is to be used,
check it for accuracy before taking a measurement.
Make sure that the contacting surfaces of the part to be
measured are clean and free from burrs. When using a
depth micrometer, be sure to hold the anvil tightly and
squarely against the contacting surface. If a dial test
indicator is used, make sure that indicator support is
firmly anchored and any swivel connections tightened
securely. When using feeler gage or no-go gage,
proceed as follows:
When taking measurements with a feeler gage, the final
size of the feeler must be a reasonably snug fit. Both
the plug type and flat type gages are to be used for
measuring the amount of wearing of bushings and
similar parts.
If the no-go end of a plug gage enters, the part is worn
beyond the allowable limit, except when otherwise
stated. Because certain parts do not always wear
evenly, the flat type gage must be tried at several
different
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