e. Inspect the valves, valve seats, valve
3-8.
Cleaning
springs, and cylinder caps for nicks, scoring, burning,
warping, and noticeable wear.
a. All parts must be cleaned thoroughly' before
they are inspected for wear and damage. Any dirt,
f.
Examine all gaskets, packing, and shaft
grease, or other foreign material present on the parts
seals for deformation cuts, and other indications of
after cleaning can affect the accuracy of the inspection
and impair operation of the equipment following
reassembly.
g. Replace
all
defective
components,
preformed packings, gaskets, springs, and components
b. Wash all parts of the compressor assembly
of repair kits allocated to general support maintenance.
except the bearings in dry-cleaning solvent (P-S-661).
Use a small brush to swab out all compressor lubricating
3-10.
Lubrication
oil passages. Thoroughly dry all parts with filtered
compressed air and place in clean, covered containers.
a. Apply a light film of pneumatic system
c. Wash all bearings in filtered dry-cleaning
lubricating grease (MIL-L-4343) to all preformed
solvent. Dry bearings by using the vacuum air method.
packings during assembly.
Lubricate bearings immediately after cleaning (para 3-
10). Avoid touching clean bearings with bare fingers; do
b. Lubricate all male threads and wear
not spin bearings while cleaning or before they are
surfaces with pneumatic system lubricating grease
lubricated.
(MILL-I343) during assembly.
3-9.
Inspection
c. Lubricate the front and rear bearings with
pneumatic system lubricating grease (MIL-L-4343)
during assembly.
a. Perform a thorough general inspection of all
parts of compressor assembly. Check particularly for
3-11.
Oil Reservoir-and-Breather Section
cracked and chipped castings, damaged threads, or
finished surfaces that are scored, pitted, or scratched.
a. Description. The oil reservoir-and-breather
b. Refer to paragraph 1-6c for applicable
section consists of a cover and filter assembly, a
dimensions when checking parts for excessive wear or
breather body, plug and bleeder, indicator cap, indicator,
other damage.
oil pump, piston assembly, cylinder, oil reservoir, and
attaching hardware.
c. Carefully examine the bearing assemblies
for damaged races, balls, or needle rollers. After parts
b. Maintenance. Overhaul of the oil reservoir-
have been cleaned and lubricated, test for concentricity
and-breather section (fig. 3-3) consists of replacement
and smoothness of operation.
and repair of the sight glass plug, the cover and filter
assembly, attaching parts, and those parts included in
d. Inspect the cylinder bores, pistons,
the oil pump piston repair kit.
connecting links, wristpins, and master rod for excessive
wear, scoring, and other indications of damage. Refer to
paragraph 1-6c for the original dimensions and
permissible wear at these points.
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