MIL-DTL-62186C
4.3.5.13.3 Torsional application. Operate the alternator on an engine-transmission
assembly for 4 cycles of 48 hours each per items (a), (b), (c), and (d) of table I for a total of
192 hours. There shall be no failure, parts replacement, or servicing. Subsequently, the
alternator shall complete and pass tests as specified in 4.3.5.4 through 4.3.5.9. There shall be no
indication of failure, fracture, distortion, erosion, or other evidence of deterioration. The engine-
transmission assembly shall show no evidence of deterioration in the drive train elements and
shall exhibit no loss of performance.
4.3.5.14 EMI test. Connect the alternator to a test circuit as specified in figure 11.
Subject the alternator to test methods RE102 and CE102 as specified in MIL-STD-461, or
equivalent (see 4.3.1). Operate the alternator at 5000 rpm and apply a 500 A load. Broadband
conducted emissions shall be observed with a balanced 650 A split load having the current probe
on a 50 A load lead, and shall be in accordance with figures 3 and 4.
4.3.6 Interface requirements verifications. Complete the tests as specified in 4.3.6.1
through 4.3.6.3.
4.3.6.1 Installation compatibility verification. Use one or more of the methods outlined
in 4.3.1 to verify that the alternator shall fit and function as specified herein when installed on an
engine conforming to Drawing 11682700. When specified (see 6.2), the alternator shall be
installed on an engine conforming to Drawing 11682700 and shall subsequently pass the tests as
specified under 4.3.5.
4.3.6.2 Regulator verification. Use one or more of the methods outlined in 4.3.1 to
verify that the alternator shall fit and function as specified herein when operating with a regulator
conforming to MIL-DTL-62187. When specified (see 6.2), the alternator shall be tested and pass
the verifications as specified under 4.3.5 while operating with a regulator conforming to
MIL-DTL-62187.
4.3.6.3 Weight verification. Use standard inspection equipment to verify that the
alternator weighs no more than 100 lb (45 kg) with no oil in the unit.
4.3.7 Support and ownership verifications. Complete each test as specified in 4.3.7.1
through 4.3.7.3.
4.3.7.1 Endurance test. Subject the alternator to 3000 hours of operation in accordance
with tables I and II at constant and cyclic loads and with the following conditions:
a. Oil shall be contaminated with standardized oil filter test contaminant
(SOFTC-2A) as specified in 4.3.7.1.1.
b. Total internal oil leakage shall be no greater than 91.5 cubic inches (in3)
(1500 cubic centimeters (cm3)).
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