TM 11-5985-334-34
(4) Raise the casting from the solvent and
2-27. Ball Bearings (Nonsealed)
permit the solvent to drain off. Use an air jet to blow
a. Cleaning.
out the solvent.
(1) Wash the bearing in solvent.
(5) When dry, touch up any minor damage to
(2) Remove the bearing from the solvent. Direct
finish. Extensive damage may require a complete
an air jet at the side of the bearing opposite from the
refinishing.
holder until dry. Do not permit airflow to spin the
b. Inspection. Inspect for cracks, breaks, and
bearing.
marred or damaged machined surfaces. Determine
(3) Demagnetize the bearing by passing it
whether the finish requires any touchup repairs.
through throat of a demagnetizer; once in a forward
c. Repair. If unrepairable, replace the casting.
direction, then in reverse. While doing so, rotate the
bearings one or two revolutions.
2-30. Covers and Housings
(4) Repeat (1) and (2) above using a fresh clean
Clean, inspect and repair all unfinished, finished,
solvent.
and partly finished metal covers, and housings,
b. Inspection.
according to applicable steps of procedures used for
(1) Inspect for pitted, scarred, or scuffed load-
cleaning, inspecting, and repairing castings. Refer
bearing surfaces.
(2) Check for burns, corrosion, or discoloration.
(3) Check for rust.
2-31. Gears
c. Repair. If defective, replace bearing.
a. Cleaning.
2-28. Guy Cables
(1) Clean the metal gears as set forth in
a. Cleaning.
(2) Remove dirt using a soft-bristled brush and
(1) Wipe dirt from the surface with a solvent-
an air jet.
moistened cloth.
(3) Wipe off dirt with a solvent-moistened
(2) Dry with a clean cloth.
lintless cloth.
(3) Wipe terminations with solvent-moistened
(4) Dry with a clean lintless cloth.
cloth. Dry with a clean cloth.
b. Inspection.
b. Inspection.
(1) Inspect for broken, chipped, or badly worn
(1) Inspect for loose terminations.
teeth.
(2) Check for broken strands.
(2) Inspect the gear bodies for cracks and
c. Repair. Replace damaged cables.
deformations.
2-29. Castings
(3) Inspect surfaces for corrosion and other
abnormal condition.
WARNING
Compressed air shall not be used for
cleaning purposes except where reduced
2-32. Machined Metal Parts
to less than 29 psi and then only with
a. Cleaning. Detached shafts, keys, pins, collars,
effective chip guarding and personnel
worms, springs, and similar machined parts should
protective equipment. Do not use com-
be cleaned in a cleaning machine, otherwise, proceed
pressed air to dry parts when TRI-
as follows:
CHLOROTRIFLUOROETHANE has
(1) Remove surface grease with rags.
been used. Compressed air is dangerous
(2) Immerse in solvent and scrub until clean.
and can cause serious bodily harm if
protective means or methods are not
CAUTION
observed to prevent chip or particle (of
To avoid corrosion, do not touch part
whatever size) from being blown into the
with hands after parts have been cleaned.
eyes or unbroken skin of the operator or
(3) Dry in dust free area. Radiant heat in
other personnel.
ventilated enclosure is recommended.
a Cleaning.
(4) When dry, immediately apply light coat of
(1) Remove grease with rags.
MIL-L-7870 lubricating oil or equivalent (para
(2) Blow dust from surfaces, holes, and recesses
4-28) to bare steel surfaces.
with an air jet.
b. Inspection.
(3) Immerse the casting in solvent and scrub
(1) Check for physical damage to surfaces,
until clean. Work over the surfaces and into holes
corners, and edges.
and recesses with a nonmetallic brush.
(2) Inspect machined surfaces, holes, bores,
2-27
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