TM 9-2330-388-14
Section III. UNIT PREVENTIVE MAINTENANCE CKECKS AND SERVICES (PMCS)
4-6.
General
contacts eyes, Immediately wash your eyes
with water and get medical aid.
Preventive maintenance is detecting/correcting Problems
d.
Make cleanup a part of your preventive
before they happen, or fixing little problem before they
maintenance. Dirt, grease, oil, and debris may cover up
become big problems. A list of Preventive maintenance
a serious problem. Use dry cleaning solvent (item 11,
checks and services to be performed by unit
maintenance personnel are described in Table 4-1.
grease and spilled oil. Use soap and water when you
Attention to these checks and services will increase the
clean rubber or plastic material.
useful life of the equipment, but every possible problem
cannot be covered in the PMCS. You need to be alert
Watch for and correct anything that might cause a
for anything that might cause a problem. If anything
problem with the equipment. Some things you should
does look wrong, and you cannot fix it, write it on DA
watch for are:
Form 2404 and report it to your Supervisor. Be sure to
record any corrective action.
(1) Bolts, nuts, and screws that are loose,
missing, bent, or broken.
a.
Perform the checks and services at the intervals
shown in table 4-7.
(2) Welds that arc poor or broken.
(1)
Do your QUARTERLY (Q) PREVENTIVE
(3) Electrical wires and connectors that are
MAINTENANCE once each three months.
bare, broken, or loose.
(2)
Do your SEMIANNUAL (S) PREVENTIVE
(4) Hoses and fluid lines that leak, or show
MAINTENANCE twice a year, or each six month
signs of damage or wear.
(3)
Do your ANNUAL
(A)
PREVENTIVE
f.
You should know how fluid leaks affect the
MAINTENANCE twice each year.
status of. your equipment. Learn and be familiar with
the following types/classes of leakage. When in doubt,
(4)
Do
your
BIENNIAL
(B)
PREVENTIVE
notify your supervisor!
MAINTENANCE once each two years.
Leakage definitions for PMCS:
(5)
Do
your
HOURS
(H)
PREVENTIVE
CLASS I
Seepage of fluid (as indicated by wetness or
MAINTENANCE at the hour interval listed.
discoloration) not great enough to form drops.
b.
Ensure that all safety precautions listed in the
CLASS II Leakage of fluid great enough to form drops
Warning Summary are followed while performing PMCS.
but not great enough to cause drops to drip from the item
Pay close attention to all WARNINGS and CAUTIONS.
being checked/inspected.
c.
If the semitrailer doesn't work properly and you
CLASS III Leakage of fluid great enough to form drops
see what is wrong, refer to for troubleshooting
that fall from the item being checked/inspected.
instructions Section I
CAUTION
WARNING
Equipment operation Is allowable with mi-
Dry cleaning solvent P-D-680 is toxic and
nor leakage (Class I or II).
Of course,
flammable. Always wear protective goggles
consideration must be given to the fluid
and gloves, and use only In a well-ventilated
capacity in the item/system
being
area. Avoid contact with skin, eyes, and
checked/inspected. When in doubt, notify
clothes, and DO NOT breathe vapors. DO
your supervisor.
NOT use near open flame or excessive heat.
g.
When operating with Class I or II leaks, continue
The solvent's flash point is 100F-138F
to check fluid levels as required in your PMCS.
(38C-59C). if you become dizzy while using
cleaning solvent, Immediately get fresh air
h.
Class III leaks should be corrected before re-
and
medical
help.
if
solvent
leasing equipment for operation.
4-3