(c)
If the oil removed from the IDG is less than 1 pint (1/2 liter), check the low oil level indicator. 1) Make sure the low oil level indicator shows a silver
circle.
G. Specific Gravity Oil Check
S 686-031
(1) Do these steps to examine the specific gravity of IDG oil:
(a) Get a sample of new IDG oil that has not been used.
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(b) Examine the specific gravity of new IDG oil.
NOTE: The specific gravity of new IDG oil is from 0.89 to
____ 0.99.
(c)
Get a sample of used IDG oil.
(d)
Examine the specific gravity of used IDG oil.
(e)
Compare the specific gravity readings.
(f)
If the specific gravity reading of the used IDG oil is lower than 0.89, fuel may be in the IDG oil. Do the Scavenge Filter and Oil Condition Check.
(g)
If the specific gravity reading of the used IDG oil is above 0.99, hydraulic fluid or water may be in the IDG oil. Do the Scavenge Filter and Oil Condition Check.
H. Water In The Oil Check
S 686-032
(1) Get a sample of the oil in a glass container.
NOTE: The amount of oil used for a sample is not important.
____
S 756-033
WARNING: DO NOT GET METHYL ALCOHOL IN YOUR MOUTH, EYES OR ON YOUR SKIN.
_______ DO NOT BREATHE THE FUMES FROM THIS MATERIAL. PUT ON A PROTECTIVE SPLASH GOGGGLE AND GLOVES WHEN YOU USE METHYL ALCOHOL. KEEP METHYL ALCOHOL AWAY FROM SPARKS, FLAME AND HEAT. METHYL ALCOHOL IS POISONOUS AND FLAMMABLE AND CAN CAUSE INJURY.
(2) Add 3 parts of methyl alcohol to the oil sample.
NOTE: The methyl alcohol must be from an unopened container.
____
S 916-034
(3) Discard the unused methyl alcohol.
NOTE:____Methyl alcohol absorbs water from the air. Methyl alcohol used from a container which has been opened and stored on the shelf will give unsatisfactory results.
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S 756-035
(4)
Shake the mixture of IDG oil and methyl alcohol for one minute.
S 756-036
(5)
Wait one (1) minute and check the mixture.
(a) If the mixture is cloudy, water is in the IDG oil. Do the Scavenge Filter and Oil Condition Check.
I. Scavenge Filter and Oil Condition Check
S 286-087
(1) Examine the scavenge filter condition, the IDG oil condition and do actions in the Scavenge Filter and Oil Condition Check table:
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~.............................................................................. | SCAVENGE FILTER AND OIL CONDITION CHECK | ................................................................................ | SCAVENGE FILTER | | | | CONDITION | IDG OIL CONDITION | ACTION | ................................................................................ |No visible magnetic or |No oil discoloration, |1. Drain the oil. | |non-metallic particles |no signs of over-| | |(See NOTE for more |heating or chemical |2. Replace the scavenge | |scavenge filter data) |contamination of the | filter (AMM 24-11-02/201).| |*[1] |oil is not suspected | | | | |3. Service with oil | | | | (AMM 12-13-03/301). | ................................................................................ 中國航空網 m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：757 AMM 飛機維護手冊 電源 ELECTRICAL POWER 1(31)
