TM 55-4920-213-15
cient cooling and proper lubrication. Halt the
voltage of electrical equipment to as-
equipment for a cooling off period whenever
certain that sufficient power is avail-
necessary and conditions permit. Frequent in-
able to prevent motor burn-outs.
spection and servicing of cooling units, oil fil-
(3) Constantly note instrument readings.
ters, and air cleaners is necessary. Check ven-
If instrument readings consistently
tilators periodically for cracks and obstruc-
deviate from normal, stop the equip-
tions. Check lubricants for viscosity and
ment and investigate cause.
lubricating ability.
b. At Stop.
(1) When halted for short shutdown pe-
b. At Stop.
riods, the equipment should be shelter-
(1) Do not leave equipment in the sun
ed from the wind.
for long periods; place equipment
(2) When preparing equipment for shut-
under cover to protect it from the sun,
down periods, place control levers in
sand, and dust when possible.
the neutral position to prevent them
(2) Cover inactive equipment with tar-
from possible freezing in an engaged
paulins if no other suitable shelter is
position. Freezing may occur when
available.
water is present due to condensation.
(3) Equipment inactive for long periods
(3) Clean all equipment of ice and conden-
in hot humid weather is subject to rap-
sate as soon as possible after opera-
id rusting and accumulation of fungi
tion. If the canvas covers are not in-
growth. Make frequent inspections
stalled, be sure to protect all equip-
and clean and lubricate to prevent ex-
ment against entrance of loose,
cessive deterioration. Protect cool-
drifting snow during the halt.
ing systems with rust inhibiter com-
(4) If heater is not in operation the stor-
pound. Remove the batteries and
age batteries should be removed and
store in a cool place.
stored in a warm place.
(5) Refuel equipment immediately in or-
22. Operation in Extreme Wet Climate
der to reduce condensation in the fuel
tanks. Prior to refueling, open fuel
Mud, water, and high humidity are enemies
tank drain cock and drain off any ac-
of the equipment in this shop set. Particular
cumulated water.
attention shuld be paid to formation of rust,
(6) Immediately after shutdown, start the
mud scale, dirt buildup, and mildew. All equip-
heater and check to be sure it operates
ment exposed to these conditions should be
effectively. The heater should elimi-
cleaned and oiled frequently in order to pre-
nate the necessity of removing the bat-
serve the operating efficiency.
teries to warm storage, and is de-
signed to operate unattended over-
23. Operation In Snow and Ice
night.
The precautions listed in paragraphs 19 and
(7) Open drain cock to remove liquid
20, apply to operating the equipment in snow
from water separators and cooling
and ice.
systems; inspect drain cocks for ob-
structions. Remove any foreign ma-
24. Operation in Salt Water Areas
terial or obstructions from the drain
cocks. Leave drain cocks in full open
Corrosion is the major problem presented by
position while equipment is inopera-
operation of the equipment in salt water areas.
tive.
Particular attention should be given to applica-
tion of corrosion preventive compounds, clean-
21. Operation in Extreme Hot Weather
ing of equipment, storage, and touch-up of
Conditions
painted areas. Remove all traces of salt water
a. General. Operation of the equipment in
and salt water residue from the exterior of the
extreme hot weather conditions requires effi-
shop by thoroughly washing the equipment
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