(2)
Access Panels
413/423 Fan Cowl Panels (Left)
414/424 Fan Cowl Panels (Right)
D. Prepare for the Removal
S 012-008
(1)
Open the fan cowl panels (AMM 71-11-04/201).
S 862-009
(2)
Remove pressure from the IDG cooling system as follows:
(a)
If the IDG has a PUSH-TO-VENT button, push the button to release the internal IDG pressure.
(b)
Put the container under the IDG to catch the oil.
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SEE A
INTEGRATED DRIVE
GENERATOR
FILTER
ELEMENT
FWD
SEE B
FILTER COVER
0-RING
BOTTOM VIEW
A
RED
BUTTON
NORMAL (RESET) EXTENDED
PRESSURE DIFFERENTIAL INDICATOR
B
Scavenge Filter Installation
Figure 201
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(c)
Remove the cover from the overflow drain coupling on the IDG.
(d)
Put the end of the drain hose in the container.
WARNING:_______USE CARE WHEN YOU CONNECT THE DRAIN HOSE. PRESSURE IN THE IDG CAN CAUSE HOT OIL TO COME OUT OF THE COUPLING. HOT OIL CAN CAUSE SERIOUS INJURY.
(e)
Connect the oil-drain hose to the overflow drain coupling on the IDG. Allow the surplus oil to drain into the container.
(f)
Remove the oil-drain hose.
(g)
Install cover on overflow drain coupling.
E. Procedure
S 022-010
(1) Remove the scavenge filter as follows:
(a)
Remove the wire which locks the scavenge filter cover.
(b)
Put the container under the scavenge filter.
WARNING:_______USE CARE WHEN REMOVING THE FILTER COVER. HOT OIL MAY FLOW FROM THE SCAVENGE FILTER WHEN THE FILTER COVER IS REMOVED. HOT OIL CAN CAUSE SERIOUS INJURY.
(c)
Remove the filter cover. Discard the O-ring. Allow the oil to flow out of the filter into the container.
NOTE: Inspect oil in filter cover for particles before
____
dumping.
(d) Remove the filter element. Discard the O-ring.
TASK 24-11-02-212-002
3. Scavenge Filter Inspection/Check (Fig. 201)________________________________
A. General
(1) When the Pressure Differential Indicator (DPI) on the IDG is extended, the scavenge filter and the IDG oil must be examined to see if more work is necessary.
B. References
(1)
AMM 24-11-01/601, Integrated Drive Generator
(2)
AMM 24-11-04/401 IDG Air/Oil Heat Exchanger
C. Procedure
S 212-011
(1) Do a check for the conditions that follow:
(a)
Is there contamination on the scavenge filter element, in the filter , or in the oil drained from the filter?
(b)
Is there a condition that would allow contaminated oil to bypass the filter and enter the external oil cooling circuit?
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(c) Contamination is defined as bright metal deposits which can be clearly defined as chunks or pieces caused by breakage (in contrast to nonmagnetic flakes or slivers caused by normal wear).
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