TM 55-4920-213-15
MAINTENANCE INSTRUCTIONS (OPERATOR)
Section I. SPECIAL ORGANIZATIONAL TOOLS AND EQUIPMENT
maintenance of individual items of equipment
are listed in the TM for the item (app. I).
are Supplied With or Issued for Use
With the Equipment
28. On Vehicle Material (OVM)
Lists of tools and parts attached to the equip-
No special tools or equipment are required
ment are listed in the manuals for the specific
for operator maintenance of this shop set. Spe-
items (app. I).
cial tools and equipment required for operator
Section II. LUBRICATION
from dirt. Paragraphs 18-26 contain lubrica-
29. General
tion instructions for the protection, of equip-
A lubrication order is issued for each item of
ment under unusual conditions.
equipment and is to be carried with it at all
b. Cleaning. Clean all surfaces surrounding
times. Lubrication orders prescribe approved
the points to be lubricated before applying the
lubrication procedures. The instructions con-
lubricant. Use an approved cleaning solvent to
tained therein are mandatory.
wash the surfaces. Wipe off all excess lubricant
after lubricating.
c. Points of Application. The points of appli-
cation are illustrated in the applicable lubrica-
tion order. Follow the detailed lubrication in-
handling lubricants, make certain the contain-
structions illustrated beneath the lubrication
ers are clean and securely covered to prevent
points indicating procedures to be followed, at
dirt, dust, or other foreign matter from enter-
each point. Apply the lubricant indicated in the
ing. Keep lubrication equipment in a place
lubrication order.
where it will be safe from damage and free
Section. III. PREVENTIVE MAINTENANCE SERVICES
mine if conditions affecting the equipments
31. General
readiness have changed since the last after-op-
a. Responsibility and Intervals. The pri-
eration service.
mary function of preventive maintenance is
c. During Operation Service This service
to prevent breakdowns and, therefore, the need
consists of the detection of unsatisfactory per-
for repair. Preventive maintenance services
formance while the equipment is in operation;
which are the responsibility of the operator
the operator should be alert for any unusual
will be performed before operation, during op-
noises, vibrations, or irregularitites of per-
eration, at halt, and after operation (table I).
formance.
b. Before-Operation Service. This is a brief
d. At Halt Service. This service will consist
service to ascertain that the equipment is ready
of brief visual inspection of equipment for con-
for operation; it is essentially a check to deter-
dition, security, and wear; the removal of
