a.
Cleaning.
(1)
Clean all unpainted metal parts using
cleaning solvent that is in accordance with
Federal Specification P-D-680, Type II, or
equivalent. Wipe nonmetallic parts with a
clean, lint-free cloth moistened in detergent
and water and air dry.
(2)
Clean all painted surfaces by spraying with
hot water and detergent solution per
Federal Specification P-D-220. Parts that
will be repainted may be cleaned with
steam. After cleaning, refinish affected
painted areas where required.
Do not use steam or water to clean any electrical
components or assemblies such as electrical gauges,
switches and solenoids.
(3)
Clean
electrical
components
with
trichloroethane, per Federal Specification
O-T-620 or equivalent.
Proper precautions must be exercised to protect
personnel. Stand clear of all tubing openings. After
cleaning, drain tubes, and dry with low pressure
compressed air (30 psig maximum [206 KPa]).
(4)
Clean outside and inside surfaces of the
steel tubing assemblies with compressed
air, pressurized hot water and detergent or
steam.
b.
Inspection. In general, inspect as follows:
(1)
Inspect for visible wear, damage, distortion,
cracks, breaks, and corrosion. Replace all
o-rings, gaskets and seals.
(2)
Inspect threaded parts for stripped threads,
cross-threading and for nicks and burrs.
(3)
Inspect hoses and tubing for evidence of
leaks, cracks, pinching, chaffing conditions,
damaged connecting nuts, and similar
defects.
(4)
Examine all electrical wiring for broken
insulation, evidence of burning (indicating a
short), loose connections and damaged
terminals.
(5)
Inspect
painted
surfaces
for
chipping,
peeling or discolored paint.
c.
Repair or Replacement. For the most part,
repair of this equipment will be made by replacement of
worn
or
damaged
parts.
Detailed
repair
and
replacement procedures
for specific parts are found in the following subassembly
paragraphs.
NOTE
Many repair parts for this equipment are
provided in the form of kits. Refer to
Section VIII, Illustrated Parts Breakdown
for details. Activities shall replace all
parts (regardless of condition) which are
removed in the process of disassembly
with all like parts furnished in kits.
Therefore,
instructions
for
cleaning,
inspecting, and repair of used parts
found in kits have been omitted from this
manual. If any kit parts must be
cleaned, inspected, or tested prior to
installation, instructions for performing
these requirements are included at the
appropriate detailed instruction location.
An installed part which is not defective
need not be removed solely for the
purpose
of
replacement
by
a
corresponding kitted part. Residue from
kits and removed parts in this category
shall be administratively condemned.
(1)
Minor nicks, scoring or scratches on non-
critical surfaces may be smoothed with
crocus cloth per Federal Specification P-
C458.
(2)
Repair or replace damaged or defective
steel tubing. To repair or replace steel tube
assemblies attachment fittings, proceed as
follows:
NOTE
Before attempting to repair tube fittings,
make certain stainless steel tubing is of
sufficient length to fit after cutting off end
containing damaged fittings. If not long
enough, replace whole tube assembly.
(a)
Cut off tubing just beyond damaged
fitting.
(b)
Slide tubing nut and then the sleeve
onto the tubing, refer to Figure 6-1.
Make certain end of tubing is free of
any burrs and is reasonably square.
(c)
Insert the end of the tubing into mating
fitting, see Figure 6-2. Make certain
that tubing end is bottomed on fitting
shoulder. Apply a good grade of
lubricant on end of tubing.
(d)
Turn tubing nut slowly with wrench
while turning tubing with other hand.
When the sleeve grips the tubing, that
is when tile tubing can no longer be
turned by hand, stop turning nut and
note position of wrench. This is
termed the ring grip point.
6-2
