E.
Procedure

 S 012-011
 (1)  
Open the thrust reverser halves (AMM 78-31-00/201).

 S 862-013

 (2)
Do this task: "Release the Pressure from the IDG Oil System".

 S 862-014

 (3)  
Assemble the leak test equipment as shown in Fig. 201.

 S 862-015

 (4)  
Set the shutoff valve, on the leak test equipment, to OFF.

 S 862-016

 (5)  
Turn off the regulator valve on the leak test equipment to prevent to much pressure in the IDG case.

 (6)  
Remove the cover from the pressure fill coupling.

 S 482-018

 (7)  
Connect the hose adapter of the leak test equipment to the pressure fill fitting.

 S 032-017
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400
MAINTENANCE MANUAL

 S 482-019
 (8)  Connect the other end of the leak test equipment to a compressed air or a regulated nitrogen source.
 NOTE: If you use a regulated nitrogen source, the compressed
____
 air port must be sealed.

 S 862-020
 CAUTION:_______DO NOT APPLY MORE THAN 50 PSI. TOO MUCH PRESSURE CAN CAUSE DAMAGE TO THE IDG.
 (9)  
Turn the shutoff valve to ON and adjust the regulator to 25 psi.

 S 862-021

 (10)
 Turn the shutoff valve to OFF.

 NOTE: The pressure will decrease a small quantity, then the
____ pressure gauge will become stable at a constant value.
 S 212-036
 (11)
 If the pressure gauge continues to show smaller values, do as follows:

 (a)  
Visually examine the system for a leak.

 (b)  
If you do not find a leak, do a leak check with a leak detector fluid or a soap solution.

 (c)  
Do this task: " Release the Pressure from the IDG Oil System".

 (d)  
Repair the leaks you found and do the leak check again.

 S 862-023
 (12)
 Do this task: "Release the Pressure from the IDG Oil System".

 S 082-024

 (13)
 Disconnect the test equipment.

 (14)
 Add oil to the IDG, if it is necessary (AMM 12-13-07/301).

 (15)
 Install the cover on the pressure fill coupling.

 (16)
 Close the thrust reverser halves (AMM 78-31-00/201).

 S 612-025
 S 432-026
 S 412-027
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A
747-400 MAINTENANCE MANUAL
 GENERATOR DRIVE SYSTEM - ADJUSTMENT/TEST
________________________________________
 1.  General
_______
 A.  This procedure contains the task to do an operational test of the generator drive system. The operational test also examines the integrated drive generator for the correct operation and disconnect.
 B.  You must operate the engines to do the operational test of the generator drive system.
 TASK 24-11-00-705-001
 2.  Operational Test - Generator Drive System
_________________________________________
 A.  General
 (1)  
Most of the switches and lights you must use are on the P5 overhead panels. The other panels that you must use are identified in the task.

 B.  
References

 (1)  
AMM 12-13-07/301, IDG - Servicing

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 45-10-00/201, Central Maintenance Computer System

 (4)  
AMM 71-00-00/201, Power Plant

 (5)  
AMM 78-31-00/201, Thrust Reverser System

 (6)  
WDM 24-11-11 thru 24-11-14

 (7)  
SSM 24-11-01 thru 24-11-04

 C.  
Access

 (1)  
　
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