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TM 10-3930-643-34
GENERAL MAINTENANCE PROCEDURES. (cont)
Section IV.
GENERAL REPAIR PRACTICES
2-7.
Replacement of Parts.
Only replace unserviceable or discarded parts.
Always discard the following: cotter pins, lockwire, preformed packings,
rubber seals and gaskets.
2-8.
Cleaning.
Cleaning is a necessary part of most tasks.
Use the following
guidelines when cleaning:
a.
Use cleaning solvent P-D-680 for cleaning metal parts only.
b.
Use a mild detergent solution For rubber, plastic and nylon parts.
c.
Always clean parts before inspecting them.
d.
Dry parts with lint free cloths.
Use compressed air when specified.
e.
Use a wire brush, tap or die to clean rust, accumulated dirt,
sealant
and paint from bolts, screws, nuts and threaded holes.
f.
After cleaning, protect all parts from dust and dirt.
g.
Keep work area floors and workbenches clean and dry.
Clean as you go to
prevent accidents.
h.
Dispose of oily rags in specified containers to prevent fire hazard.
i.
Keep the vehicle clean. Oil, grease and debris may hide a serious
problem.
j.
Clean all new parts before installation.
2-9.
Inspection Criteria.
Proper inspection of parts and operating equipment
prevents small problems from becoming major problems. Visually check for any
of the following problems:
broken welds, loose fasteners,
damaged
threads,
bending, cracking, deformity, nicks, cuts,
scratches,
gouges,
distortion,
blockage or inoperability.
Equipment defects can be discovered by performing
PMCS at both crew and organizational levels.
Inspect disassembled, clean parts
for damage listed above. Check for wear.
Inspect all new parts for defects
before installation.
2-10.
General Repair Practices.
The following are additional general repair
practices. Discard broken and non-reusable parts. Paint exposed metal to
protect from rust.
Do not paint electrical harnesses, wiring, hoses or
finished machine parts.
Routinely check hoses, lines and fittings for leaks.
Perform all lubrication and PMCS on schedule.
To prevent further damage to
components, take corrective action promptly when indicated.
Be sure to follow
all warnings, cautions and notes.
Remove burrs, scratches or raised metal.
Use a fine file, stone or crocus cloth dipped in oil.
2-6
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