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 (c) After
the
are
properly
lubricated,
pack
the
hub
with
sufficient
amount
of
lubricant
to
uniformly
fill it to the inside diameters of the inner and outer
races.
Coat the spindles and hub caps with a thin
layer
of lubricant (not over 1/16-inch) to prevent
rusting. Do not fill the hub caps to serve as grease
cups under any circumstances. They should be lightly
coated, however, to prevent rusting.
Note. For
normal
operation,
lubricate
wheel
at
12,000
miles
or
at
annual
intervals,
whichever
occurs
first.
d. Reports and Records
(1) Report unsatisfactory performance of materiel or de-
fects in the application or effect of prescribed petroleum
fuels,
lubricants,
and
preserving
materials,
using
DA
Form
468
(Unsatisfactory
Equipment
Report).
(2) Maintain a record of lubrication of the vehicle on DA
Form 460 (Preventive Maintenance Roster).
c.
Lubrication
Under
Unusual
Conditions.
(1) General.
(a) Service intervals. Reduce
service
intervals
specified
on the lubrication order, i.e., lubricate more frequently,
to compensate for abnormal or extreme conditions,
such as high or low temperature, prolonged periods
of high speed operation, continued operation in sand
or dust, immersion in water, or exposure to mois-
ture. Any one of these operations or conditions may
cause
and
quickly
destroy
the
pro-
tective
properties
of
the
lubricant.
Intervals
may
be extended during inactive periods commensurate
with
adequate
preservation.
(b) Changing grade of lubricants. Lubricants are pre-
scribed in the "Key" (fig. 32) in accordance with
three
temperature
ranges: above 320 F., 40
to
o
0 t o -65 F. Change the grade
of
-10
F.,
and
lubricants whenever weather forecast data indicate
that
air
temperatures
will
be
consistently
in
the
next
higher or lower temperature range, or when sluggish
operation
caused
by
thickening
lubricant
occurs.
Nor-
mally,
no
change
in
grade
will
be
made
when
a
temporary
change
in
temperature
is
encountered.
However, if the operation of the materiel is encum-
bered by a drop in temperature, a change in grade
of lubricant will be made to restore normal opera-
TAGO 1321B
59
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