TM 55-2840-241-23
(3) Check gasket (3), humidity indicator,
packing (28), drain plug (35), air valve (32), and relief
valve (34) for leaks by brushing a liquid soap solution
(item 1, table 2-2) on all seams and closure points.
(4) If leaks are found, check torque on nuts (1)
and bolts (30, 33). Replace gasket (3) and packing (28) if
necessary.
Do not attempt to stop leaks by over-
torquing nuts. Overtorquing may cause
damage to container.
(5) Repeat steps (2) and (3) as required.
(6) Wipe off or flush away soap solution.
(7) Install cover (31) on bolts (30) and tighten
nuts (26) to 15-25 in. lbs.
Table 3-1. Container Air Pressure vs
Ambient Temperature
Temperature Pressure Temperature Pressure
(%F)
(psig)
(%F)
(psig)
140
130
120
110
100
90
80
70
60
50
7.6
7.3
6.9
6.5
6.1
5.8
5.4
5.0
4.6
4.3
40
30
20
10
0
– 10
–20
–30
–40
3.9
3.5
3.2
2.8
2.4
2.0
1.7
1.3
0.9
d. Engine Records Receptacle.
(1) Loosen two nuts (17, figure 3-1 ) and swing
stud assembly (22) out of the slot in cover (19). Pivot the
cover out of the way.
(2) Insert applicable engine records in envelope
(21) and place in the engine records receptacle.
(3) Pivot cover (19) with gasket (20) into place
over the receptacle opening and swing stud assembly
(22) into the cover (19) slot.
(4) Secure the cover in place by tightening two
nuts (17) to 30-45 in. lb.
e. Tamper-proof Security.
Container tamper-proof security is provided by five
lead seals; two in the container closure flange, two in
the records receptacle cover, and one in the service
receptacle cover,
(1) Thread seal (16, figure 3-1) wire through the
sealing holes in cover (31) and service receptacle (29).
Seal the ends of the wire together with the attached
lead seal.
(2) Seal both ends of the records receptacle
cover (19) by threading seal wire (16) through the seal-
ing holes in cover (19) and receptacle (23). Seal the ends
of the wires together with the attached lead seals.
(3) Thread seal wire (16) through each set of
sealing holes in the closure flange of base assembly (24)
and cover assembly (2). Thread the wire down through
one hole and up through the other hole. Secure the
ends of the wires together with the attached lead seals.
The sealing holes are located at the left front and right
rear of container closure flange,
(4) Coat the exposed threads of bo]ts (30 and 37) and
stud assembly (22) with corrosion preventive com-
pound (item 2, table 2-2).
f. Container Stenciling.
Stenciling of the engine shipping container will be in
accordance with paragraph 3-9 and figure 3-3.
3-12. Engine Container Internal Pressure and
Humidity Check.
Check the internal pressure and humidity within 24
hours after the container is pressurized. Check the
pressure and humidity immediately prior to shipment
if the engine is to be shipped.
a. Internal Pressure Check. If the internal pressure
is not within 0.5 psig of the value shown in table 3-1,
repeat paragraph 3-11c(2) and (3).
b. Humidity Indicator Check. The humidity indica-
tor (36, figure 3-1) is normally light blue in color. At
40± 3 percent relative humidity, the color will change
to light lavender or lavender pink.
(1) the humidity indicator may be light lav-
ender or lavender pink when the container is pres-
surized and should change to light blue within one to
two hours. If it does not change to light blue, replace
the indicator.
NOTE
The humidity indicator should change to light
blue in an atmosphere of less than 37 percent
relative humidity unless it has absorbed suffi-
cient moisture to wash away or destroy its
chemical properties.
(2) If the humidity indicator changes to light
lavender or lavender pink after the container has been
pressurized, open the container and inspect the engine
for corrosion. Replace the desiccant (item 11, table 2-2.)
3-13. Removing Accessory from Shipping Con-
tainer
NOTE
Before removing the accessory from the ship-
ping container, inspect for evidence of rough
handling or tampering.
3-8
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