TM 5-6640-212-14
(2) When the bath has reached desired
2-40. Grease Dropping Point Apparatus.
temperature, remove the rubber stoppers. Insert bombs
a. Description. The grease dropping point
through the openings into the rack; then replace the
apparatus is designed to comply with the requirements
rubber stoppers.
specified in ASTM Method D566 (TM 101166). The
(3) Connect a cooling water line to one of the small
apparatus is used to determine the dropping point of
tubes on the Soxhlet condenser. Connect a drain line to
lubricating grease. It consists of chromium-plated brass
the other. This will condense the steam coming from the
cup (drawer A1, Fig. B-7), test tube with indentions
bath and return the condensate to the bath. If water
(drawer B2, fig. B-8) to support the cup inside the tube, a
supply is insufficient to operate the condenser, vent
400-milliliter beaker (drawer B4, fig. B-8), a 110-volt,
steam directly into the atmosphere.
500-watt capacity rheostat heater and electrobestos top
(4) Refer to ASTM Method D130 (TM 10-1166) for
(drawer A5, fig. B-7), support rod (drawer E2, fig. B-11),
detailed test instructions.
115-volt stirrer motor with stirrer (drawer B5, fig. B-8) two
corks (drawer Al', fig. B-7), a chromium plated rod
2-38. Cloud and Pour Point Test Bath.
(drawer A1, fig. B-7) for forming grease film in the cup, a
a. Description. The cloud and pour point test bath,
support bracket (drawer A1, fig. B-7), and two ASTM
stored in drawer B5 (figs. 1-2 and B08), is designed to
thermometers stored in the thermometer receptacle on
comply with the requirements specified in ASTM Method
the door of cabinet N1 (fig. B-19).
D97 (TM 10-1166). The assembly of four jackets may be
b. Operation. Refer to ASTM Method D566 (TM
raised or lowered on the rod support to vary depth of
10-1166) procedure for complete directions for
jackets in the cooling medium (dry ice and acetone; dry
determining the dropping point of grease.
ice and alcohol), according to the standard test
2-41. Freezing Point Apparatus.
procedure. The bath is equipped with a drain plug near
the bottom, and a cover provided with openings to admit
a. Description. The freezing point apparatus,
passage of test jars and thermometers. Both bath and
designed to comply with requirements specified in ASTM
cover are fitted with handles. The test apparatus includes
Method D2386 (TM 10-1166), is stored in drawer B3
four ASTM high-range thermometers and drilled cork
(figs. 1-2 and B08). The apparatus is used to determine
stoppers. The thermometers are stored in the
the freezing point of aviation gasoline and turbine fuels. It
thermometer receptacle on the door of cabinet NI (fig. B-
consists of' two Dewar flasks, one inside the other. The
19). The drilled cork is stored in tray L2 (fig. B-17).
external flask is completely evacuated; the internal flask
b. Operation. Complete details for performing tests
is fitted with a stopcock to regulate heat transfer. The
are described in ASTM Method D97 (TM 10-1166 and
freezing medium is solid carbon dioxide. The inner flask
TM 10-1167).
is fitted with drilled cork, which holds stirrer, and
thermometer. Included are brass cover and support
2-39. Aniline Point Apparatus.
bracket. The stirring loop is stored in drawer B3 (fig. B-
a. Description. The aniline point apparatus,
8).
designed to comply with the requirements specified in
b. Operation.
ASTM Methods D611, (TM 10-1166 and TM 10-1167)
(1) Fill the outer flask to proper level with any
and D1012 (TM 10-1166), is stored in drawer B3 (figs. 1-
convenient liquid cooled with solid carbon dioxide and
2 and B-8). The apparatus is used to determine the
add the carbon dioxide. Acetone and alcohol may be
aniline point of petroleum products. It consists of a cover
used. (21 Refer to ASTM Method D2386 (TM 10-1166)
with U-tube, belt driven stirrers for bath liquid and
sample, and cooling coil, a glass bath jar, a 115-volt 50-
for detailed test procedures.
to 60-Hz stirrer motor, electric heater, two thermometers,
2-42. Grease Working Machine.
stand and support rod, and clamp for stirrer motor.
a. Description. The grease working machine,
b. Operation. Refer to ASTM Method D611 (TM
designed to comply with the requirements specified in
10-1166) and TM 10-1167) and D1012 (TM 10-1166)
ASTM Method D217 (TM 10-1166), is stored in cabinet
procedures for complete instructions for performing test.
N1 (figs. 1-2 and B-19). The machine is used to measure
the consistency of lubricating greases by penetration of
standard cone. It is hand operated.
2-63
