TB 11-6135-200-25
(1) Construct a power source as shown in figure 3-4
3-4. Serviceability Tests for Battery, Wet Primary
(making certain switch is open).
BA-486AIU or BA-486B/U
The following tests should be performed by direct
(2) Connect power source positive potential to P I-C,
support whenever a BA-486A/U or BA-486B/U is turned
negative potential to P1-A.
in by the using organization for testing, or before the
battery is issued to the using organization. If all of the
(3) Close switch and apply voltage for approximately 3
test conditions are satisfied, the battery is considered
seconds.
serviceable and may be issued or returned to stock. If
any of the conditions are not met, the battery is
(4) Open switch and disconnect power source from J 1
unserviceable and must be disposed of in accordance
connector.
with the instructions in paragraph 3-14.
(5) Using AN/USM-223, measure for resistance between
a. With the AN/USM-223 in the 50-volt dc range,
J1 -E and J1-F, proceed to d below if the resistance is
check for potential between pins A and C of connector J2
less than I ohm (if the resistance is not less than 1 ohm,
and between pins B and D of J2. The potential in each
reject battery).
measurement must be 0 volt.
b. Set the AN/USM-223 to the R x 10,000 range
d. The gas generator circuit is in the safe condition
and measure the resistance between the battery case
and can not be activated when less than 1 ohm is
and each exposed pin on Jl (pins A through H, J through
indicated between J1-E and JI-F.
N, P, R through V) and each exposed pin on J2. Each
e. Construct a power source as shown in figure 3-
measurement must be open (infinity).
4, making certain that the switch is in the open position.
f. Connect the power source positive potential to J
c. Mount mating plug P1 on connector J1. Set the
I 1-D and negative potential to JI-A.
AN/USM-223 to the appropriate range and check the
g. Close switch and apply voltage for 3 seconds.
resistance specified in the chart below.
Open switch and remove power source from J1-D and
reposition the gas generator circuit from testing).
Pins
Resistance (ohms)
h. The following test shall be performed as quickly
P1-A and P1-C
Between 1,420 and 1,740
as possible, with the current limited to 10 milliamperes or
P1-A and P1-D
Between 567 and 693
less.
Using a AN/USM-223 or Test Set Arming
Less than 1 (observe caution note
P1-E and P1-F
Mechanism (8020264), measure the resistance between
below)
J I-A and J1-B, the resistance shall be between I to 5
P1-H and P1-K
Between 23 and 32
ohms.
P1-H and P1-T
Between 23 and 32
i. Using the AN/USM-223, measure the resistance
PI-L and P1-U
Less than 1
between J I -E and J I -F, the resistance must be infinity
P1-M and J2-A
Less than 1
(open circuit).
P1-N and J2-C
Less than 1
j. Connect the power source shown in figure 3-4,
P1-P and J2-B
Less than 1
positive potential to J I-C and negative potential to J I-A.
PI-R and J2-D
Less than 1
CAUTION
In the event observation between P1-
E and P1-F indicate open circuit
(infinity), discontinue all testing and
perform the following, in the
sequence stated.