TM 11-6140-203-14-4&P
CHAPTER 5
DIRECT SUPPORT AND GENERAL SUPPORT
MAINTENANCE
(d) Power Supply PP-1104C/G with
5-1.
General Instructions
relay, reverse current cutoff (NSN 5945-00-824-5575).
The direct support and general support maintenance
b. The following special cable assemblies are
procedures given in this chapter supplement those
available for the purpose indicated:
described for organizational maintenance (chap. 4) and
(1) Cable assembly, Power Electrical, CX-
consist of the following.
11934IU (NSN 6150-00-935-8722), No. 4 AWG wire.
a. Preparing a new battery for service (para 5-4).
(2) Cable assembly, Power Electrical, CX-
b. Adjusting electrolyte level (para 5-5).
11779IU, No. 00 AWG.
c. Periodic service procedures (quarterly) (para 5-
NOTE
6).
d. Troubleshooting (para 5-7).
AN/USM-432 and RF80GT come
equipped with proper mating cables to
e. Disassembly (para 5-8).
directly connect to the BB-693AIU.
f. Reconditioning battery components (para 5-9).
g. New cell procedures (para 5-10, 5-11).
5-4.
Preparing New Battery for Service
h. Vent valve test (para 5-12).
A new battery is a battery that has never been placed in
i. Battery heater blanket test (para 5-13).
use or a battery taken out of normal administrative
storage (para 5-15) for use. Perform the procedures
5-2.
Test Equipment, Tools, Additional Equipment
given in a through g below to prepare a new battery for
and Supplies
service
a. Test equipment and tools authorized for the direct
a Initial Inspection Remove the cover and perform
support and general support maintenance levels are
the following internal checks:
listed in the maintenance allocation chart (appx D).
(1) Damage. See whether any electrolyte
Expendable supplies and materials are listed in appendix
liquid has spilled into the battery case or shipping
container. This condition may be a sign of a damaged
CAUTION
cell
Maintenance personnel must wear a
(2) Electrical connections. Check all electrical
face shield (item 4, appx E) or goggles
connections for tightness. Test all studs on all terminals
(item 5) and an apron (item 6), while
to ensure tightness. Proper torque valve is 50 inch-
handling, servicing or making repairs to
pounds. Remove shorting spring from connector J2 if
a battery.
present. (Reserve for use in extended stoppages.)
Check any wiring for proper connection. Poor electrical
5-3.
Battery-Charger Equipment
contact may result in damage to the battery.
a. Analyzer-Charger, Battery AN/USM-432 (NSN
(3) Electrolyte level The batteries are normally
6130-01-055-1574) is the primary unit for use at direction
shipped with the proper amount of electrolyte. Do not
support and general support maintenance of Nickel-
add distilled water or electrolyte until after the battery is
Cadmium Battery BB-693A]U. If the AN/USM-432 is not
charged. When a battery has been discharged or
available, then any of the following units can be used.
allowed to stand unused over a period of time, the
(1) Analyzer-Charger,
Battery,
RF80GT
electrolyte becomes absorbed into the plates. The
(Christie).
batteries are shipped discharged and, therefore, the
(a) Charger, Battery PP-1659/G.
electrolyte level may seem low. Charging the battery
(b) Generator set, gasoline engine
should cause this level to rise to the proper mark, which
(NSN 6115-00-475-0029), 3 kilowatts, 28 volts dc, MIL-
is just above the tops (approximately one-fourth inch) of
G-52428 (used for battery charging where 115-volt or
the plates.
230-volt ac power is not available).
(c) Charger, Battery PP-1451/G.
5-1
