TM 9-2350-238-10
Section IV.
MAINTENANCE UNDER UNUSUAL CONDITIONS
SECTION INDEX
Page
AFTER FORDING MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-56
EXTREME COLD WEATHER MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-54
EXTREME HOT WEATHER MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-56
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..3-53
UNUSUAL TERRAIN MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-57
GENERAL
a. Important References. Three important
manuals to get acquainted with are: FM
21-306, FM 9-207, and FM 21-60 providing
operational and ground guide instructions in
all weather conditions to include extreme cold
( 0 ° F t o - 6 5 ° F ( - 1 8 ° C t o - 5 4 ° C ) ).
b. Vehicle. In addition to normal PMCS
(pages 2-18 thru 2-48), special care in clean-
ing and lubrication must be taken where ex-
tremes of temperature, humidity, and terrain
conditions are present or anticipated. When
operating in extremely dusty or snowy condi-
tions, clean air filter bags frequently to pro-
vide adequate air to engine.
c. Armament. When not in use, cal .50
machine gun should be covered. Keep
machine gun clean and lightly lubricated.
When cleaning in cold weather, use CLP lubri-
cant (item 3, appx D). Do not dilute or add
antifreeze to rifle bore cleaner. When cleaning
and lubricating have been done, store clean-
ing solutions and lubricants in a warm place,
if available.
d. General Lubrication Notes.
(1) Refer to appendix G for grades and
types of cold weather lubricants.
(2) In temperatures below freezing, keep
moving parts of machine gun and critical
parts of vehicle free of moisture.
e. Maintenance Do’s and Don'ts.
(1) Extreme Heat, Humid, or Salty
Conditions.
a. Don’t . . . . Park vehicle in sun for
long periods of time.
b. Do . . . . . . Lubricate vehicle more
frequently because oil will
evaporate.
c. Do . . . . . . . . Clean and lubricate
working metal surfaces
frequently.
d. Do . . . . . . . Apply a light film of
CLP (item 3, appx D) on machine
gun and mount and keep cover
in place.
(2) Dusty and/or Sandy Areas.
a. Do . . . . . . . . Park vehicles under
shelter if possible. If none is
available, cover vehicle with
tarpaulin.
b. Do . . . . . Keep machine gun lub-
ricated and covered when not in
use.
c. Do . . . . . . . Clean all dust and/or
sand from all working metal sur-
faces before operating.
(3) During adverse conditions of heavy
rains, high humidity, sand storms, very dusty,
or muddy conditions, clean and lubricate vehi-
cle more frequently to prevent damage to
equipment. Be sure to clean and lubricate
winch wire ropes.
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