teletypewriter you must do scheduled preventive
cause death by electrocution when contact is
maintenance checks and services (PMCS).
made with an ungrounded system.
(1) BEFORE OPERATION, perform your B PMCS to
dequate ventilation should be provided
be sure that your equipment is ready to go.
(2) DURING OPERATION, perform your D PMCS.
This should help you to spot small troubles before they
FLUOROETHANE. Prolonged breathing of
become big problems.
vapor should be avoided. The solvent
(3) AFTER OPERATION, perform your A PMCS.
should not be used near heat or open flame;
This should help you to keep your equipment in top shape.
the products of decomposition are toxic and
(4) WEEKLY AND MONTHLY PMCS are
important checks to keep serious problems from suddenly
FLUOROETHANE dissolves natural oils,
happening. Perform WEEKLY as well as BEFORE
prolonged contact with skin should be
OPERATION PMCS if:
avoided. When necessary, use gloves which
(a) You are the assigned operator and have not
the solvent cannot penetrate. If the solvent
operated the item since the last WEEKLY.
is taken internally, consult a physician
(b) You are operating the item for the first
ompressed air is dangerous and can cause
(5) When an item of equipment is reinstalled after
serious bodily harm if protective means or
removal, for any reason, perform the necessary B PMCS
methods are not observed to prevent a chip
(para 4-1) to be sure the item meets the readiness
or particle (of whatever size) from being
blown into the eyes or unbroken skin of the
(6) Use the ITEM NO. column in the PMCS table to
operator or other personnel. Goggles must
get the number to be used in the TM ITEM NO. column
be worn at all times while cleaning with
on DA Form 2404 (Equipment Inspection and
compressed air. Compressed air shall not
Maintenance Worksheet) when you fill out the form.
be used for cleaning purposes except where
b. Organizational preventive maintenance procedures are
reduced to less than 29 pounds per square
designed to help maintain equipment in serviceable
inch gage (psig) and then only with
condition. They include items to be checked and how to
effective chip guarding and personnel
check them. These checks and services, described in
Do not use
paragraph 4-3, outline inspections that are to be made at
compressed air to dry parts when
specific weekly (W),Monthly (M), quarterly (Q), and
trichlorotrifluoroethane has been used.
semiannual (S) intervals.
c Routine checks like CLEANING, DUSTING,
The PROCEDURES column in your PMCS
WASHING, CHECKING FOR FRAYED CABLES,
charts instruct how to perform the required
STOWING ITEMS NOT IN USE, COVERING UNUSED
checks and services. Carefully follow these
RECEPTACLES, AND CHECKING FOR LOOSE NUTS
instructions and, if tools are needed or the
AND BOLTS are not listed as PMCS checks. They are
chart so instructs, get organizational
things that you should do any time you see they must be
maintenance to do the necessary work.
done. If you find a routine check like one of those listed
If your equipment must be in operation all the
in your PMCS, it is because other operators reported
time, check those items that can be checked
problems with this item
and serviced without disturbing operation.
Make the complete checks and services when
When you are doing any PMCS or routine
the equipment can be shut down.
checks, keep in mind the warnings and
d. Deficiencies that cannot be corrected must be
reported to higher category maintenance personnel.
Records and reports of preventive maintenance must be
ever operate the generator or shelter until
made in accordance with procedures given in TM 38-750.
Paragraphs 3-20, 3-21 and 3-22 deleted.
it has been properly grounded. Electrical
defects in the load lines or equipment can
Change 6 3-17