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MAINTENANCE MANUAL
C. Standard Tools and Equipment
(1)
Container - 2 U.S. gallon (8 liter) capacity, suitable to collect oil drainage from the IDG.
(2)
Overflow drain hose with an adapter,
Ozone OMP2505-3 or Risbridger tool DRG 1827.
(3)
Hydrometer
D. Access
(1)
Location Zones
(a)
410 Left Power Plant Nacelle
(b)
420 Right Power Plant Nacelle
(2)
Access Panels
(a)
413/423 Fan Cowls Left
(b)
414/424 Fan Cowls Right
E. Prepare for Examination
S 866-084
(1) Open these circuit breakers on the main power distribution panel P6 and attach DO-NOT-CLOSE tags:
(a)
6B5, L GEN DRIVE DISC
(b)
6B6, R GEN DRIVE DISC
S 016-017
(2) Open the fan cowl panels (AMM 71-11-04/201).
F. Visual Oil Check
S 916-024
CAUTION: DO NOT PUT A TOOL INSIDE THE PRESSURE OILER (SERVICE FITTING)
_______ TO REMOVE IDG INTERNAL PRESSURE. DAMAGE TO THE PRESSURE OILER (SERVICE FITTING) AND LEAKAGE OF IDG OIL CAN OCCUR.
(1)
If the IDG has a PUSH-TO-VENT button, push the button to release the internal IDG pressure.
S 216-025
(2)
Make sure the IDG pressure caps (service fitting covers) are not leaking.
(a) If the pressure caps are leaking, do the IDG Pressure Oiler (Service Fitting) and Pressure Cap check (AMM 24-11-01/601).
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S 026-026
(3) Remove the pressure cap from the pressure oiler (overflow drain coupling) on the IDG.
(a) If the pressure oiler is leaking, do the Pressure Oiler (service fitting) and Pressure Cap check (AMM 24-11-01/601).
NOTE: If the pressure oiler (service fittings) or service
____ adapters are leaking because they do not mate properly, replace the pressure oiler or service adapters. The pressure oilers are not repairable.
S 426-027
(4) Put the free end of the drain hose into a container.
S 426-028
WARNING: WHEN YOU CONNECT THE OUTLET ADAPTER TO THE PRESSURE OILER
_______ (OVERFLOW DRAIN COUPLING) USE A RAG AROUND THE FITTING. THIS WILL PREVENT A SPRAY CAUSED BY PRESSURE IN THE IDG CASE. HOT OIL CAN CAUSE INJURIES.
(5) Connect the adapter and the oil drain hose to the pressure oiler (overflow drain) on the IDG.
NOTE: When you connect the adapter to the pressure oiler,
____
it is usual for some oil to drain.
NOTE: If the pressure oiler to adapter connection is leaking,
____ replace the pressure oiler and/or the adapter. The pressure oiler and service adapters are not repairable.
S 216-029
(6) Examine the oil for contamination, discoloration, signs of overheating or chemical contamination.
(a) If the oil is contaminated, discolored or overheated, do the Scavenge Filter and Oil Condition Check.
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(b) If you are not sure the IDG oil is contaminated with fuel, hydraulic fluid or water, do the Specific Gravity Oil Check or the Water In The Oil Check.
NOTE:____Some types of IDG oils are colored black. A visual inspection of the oil cannot detect if the oil has been overheated or mixed with other types of oil.
NOTE: Clear IDG oil is not always an indication of good IDG
____ oil. Hydraulic fluid will lose its color over a short time. Old hydraulic fluid is clear in color.
S 216-030
(7) Examine the amount of oil collected in the container.
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