MIL-DTL-62186C
TABLE VI. Oil contamination.
Test hours
Oil contamination
Start of 600 hour cycle
Add 3.2 grams (g) of SOFTC-2A per 5 gallons (gal) of oil
in oil system.
At 200 hours
Add 3.2 g of SOFTC-2A per 5 gal of used oil already in
system.
At 400 hours
Add 3.2 g of SOFTC-2A per 5 gal of used oil.
Total contamination now 9.6 g SOFTC-2A per 5 gal.
At 600 hours
Drain used oil and grit out of system. Thoroughly flush oil
and grit from system with solvent. Use air to thoroughly
dry system. Refill system per "start" for next 600 hour
period, as applicable.
4.3.7.2 Endurance operation test. When specified (see 6.2), install the alternator on an
engine-transmission conforming to Drawing 11655426. Operate the engine-transmission
assembly to provide alternator performance in accordance with the conditions as specified in
4.3.7.1 and tables I and II, twice running through a, b, c, and d, in sequence, for a total of
48 endurance hours. The alternator shall exhibit no indication of failure, fracture, distortion,
erosion, or other evidence of deterioration.
4.3.7.3 Nameplate test. Visually inspect nameplate for permanent and legible
identification marking.
4.3.8 Operating environment verifications. Complete and pass the tests as specified in
4.3.8.1 through 4.3.8.6.
4.3.8.1 High temperature test. Fill the alternator oil circuits with MIL-PRF-2104,
grade 40. Subject the unit to a high temperature test in accordance with procedure II,
method 501.3 of MIL-STD-810, or equivalent (see 4.3.1), except that 36 hours of storage at
225F (107C) shall be substituted for steps 1 through 6, and steps 7 through 11 shall be
performed at standard ambient conditions. When stabilized at the 225F (107C) operational
temperature, the unit shall be subject to and pass the tests as specified in 4.3.5.1, 4.3.5.4, 4.3.5.7,
4.3.5.8, and 4.3.5.9 without evidence of damage. The same tests are to be repeated during the
ambient operational test.
4.3.8.2 Low temperature test. Perform each low temperature test as specified in
4.3.8.2.1 and 4.3.8.2.2.
4.3.8.2.1 Cold soak test. Fill the alternator oil circuits with MIL-PRF-46167 prior to
start of cold soak test. The alternator shall be subject to a low temperature storage test at
-65 5F (-54 2.8C) for 12 hours. At the conclusion of the cold soak test, the alternator and
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