757 AMM 飞机维护手册 电源 ELECTRICAL POWER 1(36)

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 NOTE: A moderate number of scattered small metallic flakes
____ (bronze or silver colored metal), or flakes of generator insulation are normal products of wear during operation. Even a considerable number of nonmetallic items such as black epoxy chips, sleeving, and other forms of generator insulation do not always indicate damage to IDG.
 (d)  
Fuel, hydraulic fluid or water in IDG oil is liquid contamination.

 (e)  
The condition that would allow oil to bypass the scavenge filter are damaged O-rings or a damaged filter.

 S 422-017
 (2)  If the Pressure Differential Indicator (DPI) is not extended, do these steps:
 (a)  
If no contamination is found in the filter and in the IDG oil, install a new filter element per section Scavenge filter Installation.

 (b)  
If contamination is found in the filter or in the IDG oil, do the "Examine The Oil In The IDG" (AMM 24-11-01/601).

 S 422-014
 (3)  If the differential pressure indicator (red button) is extended, perform the following:
 (a)  Do the "Examine the Pressure Differential Indicator and the Scavenge Filter" (AMM 24-11-01/601).
 TASK 24-11-02-422-003
 4.  Scavenge Filter Installation (Fig. 201)____________________________
 A. References
 (1)  AMM 12-13-03/301, Integrated Drive Generator Servicing
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 ALL  ú ú 01 Page 204 ú May 20/98
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A

757
MAINTENANCE MANUAL

 (2)
AMM 71-00-00/201, Power Plant - Maintenance Practices

 (3)
AMM 71-11-04/201, Fan Cowl Panels

 B. Procedure
 S 422-004
 (1) Install the scavenge filter as follows:
 (a)
Lubricate and install a new O-ring on the filter element.

 (b)
Lubricate and install a new O-ring on the filter cover.

 (c)
Install the filter element into the IDG.

 WARNING: BE SURE THE FILTER COMPONENTS ARE SEATED IN THE FILTER CAVITY
_______ BEFORE INSTALLING THE FILTER COVER. DO NOT FORCE THE FILTER COMPONENTS INTO THE HOUSING BY TIGHTENING THE FILTER COVER. FILTER COMPONENTS MAY BE DAMAGED IF NOT PROPERLY INSTALLED.
 (d)
Screw in the filter cover. Tighten to 156-180 pound-inches.

 (e)
Lock the filter cover with wire.

 S 612-005
 (2)
Service the IDG (AMM 12-13-03/301).

 S 412-006

 (3)
Close the fan cowl panels (AMM 71-11-04/201).

 (4)
Dry motor the engine (AMM 71-00-00/201) and check for any leaks.

 S 792-015
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 ALL  ú ú 01 Page 205 ú Jun 20/96
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757
MAINTENANCE MANUAL

 QUICK ATTACH/DETACH (QAD) COUPLING - REMOVAL/INSTALLATION
_________________________________________________________
 1.  General
_______
 A.  This procedure has two tasks. The first task removes the quick attach/detach (QAD) coupling from the airplane. The second task installs the QAD coupling on the airplane.
 TASK 24-11-03-024-001
 2.  Remove the Quick Attach/Detach Coupling (Fig. 401)
_______________________________________
 A.  References
 (1)  AMM 24-11-01/401, Integrated Drive Generator
 B.  Prepare to Remove the QAD coupling
 S 024-003
 (1)  Remove the IDG (AMM 24-11-01/201).
 C.  Procedure
 S 024-004
 (1)  Remove the QAD coupling as follows:
 (a)  
Remove the bolts which attach the QAD coupling to the gearbox.

 (b)  
Remove the QAD coupling and gasket from the engine accessory gearbox.

 TASK 24-11-03-424-002
 3.  Install the Quick Attach/Detach Coupling (Fig. 401)
________________________________________
 A.  Consumable Materials
 (1)  Oil - MIL-L-23699 (AMM 20-30-04/201).
　
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