Scope of Operator's Maintenance-continued

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.

while

using

TRICHLOROTRI-

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

irritating.

Since

TRICHLOROTRI-

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

immediately.

ompressed air is dangerous and can cause

time.

(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

reporting criteria.

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

protective equipment.

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.

NOTE

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.

NOTE

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

cautions.

reported to higher category maintenance personnel.

WARNING

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