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 TM 55-1905-221-14-3
6-19.
STARTING MOTORS (ELECTRIC) (Continued).
LOCATION/ITEM
ACTION
REMARKS
TEST AFTER OVERHAUL
14. Starting Motor
NOTE
Before any testing, perform thorough inspection of starting motor for proper
assembly, particularly electrical connections. Be sure sleeve bearings wicks and
reservoirs have been lubricated.
a. No-load test.
Connect the starting motor
in series with four 6 volt
200 amp storage batteries, a
suitable variable resistor
and control voltage, and an
ammeter capable of reading
several hundred amperes. I f
an rpm indicator is available,
read the armature rpm as well e
as the current draw with the
unit running free speed or
no-load. The starting motor
should met the following
specifications:
Maximum current
90 amperes
Voltage
23.3 vdc
Rpm (approx)
85000
b. Torque test.
Torque testing equipment is
required for conducting a
stall torque test of the
starting motor. The torque
developed, current drawn,
and voltage are checked
together. The starting
motor should meet the
following specifications:
Maximum current
500 amperes
Voltage
3.2 vdc
Minimum torque
22 ft.lb.(29.8 Nm)
6-224
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