(2)  
Supply the electric power (AMM 24-22-00/201).

 S 715-314

 (3)  
Monitor the fuel leakage from the No. 2 engine fuel pump where you removed the drain plug.

 S 865-329
 NOTE: Allow the fuel leakage rate to stabilize.
____
 S 715-498
 (4) Make sure the fuel leakage rate is not more than 5 cc in 10 minutes.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-22-00
 ALL  ú ú 15 Page 543 ú Jun 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 715-331
 (5)
Put these fuel pump control switches on the fuel management control module, M154, (pilots' overhead panel, P5) to the ON position:

 (a)  
MAIN 2 FWD

 (b)  
MAIN 2 AFT

 S 715-499
 (6)
Make sure the fuel leakage rate is not more than 5 cc 10 minutes.

 S 715-333

 (7)  
Put these switches on the fuel manangement control module, M154, to the off position:

 (a)  
MAIN 2 FWD

 (b)  
MAIN 2 AFT

 S 715-334
 (8)
Continue this test (if necessary) for the other spar valves, or do this procedure: Put the Airplane back to the Usual Condition.

 J.
Test the Spar Valve for the No. 3 Engine

 NOTE: This test makes sure that the spar valve is in the correct
____
 closed position.

 S 865-335
 (1)
Make sure the FUEL CONTROL switches are in the CUTOFF position.

 (2)  
Supply the electric power if necessary (AMM 24-22-00/201).

 S 715-294

 (3)  
Monitor the fuel leakage from the No. 3 engine fuel pump where you removed the drain plug.

 S 865-336
 NOTE: Allow the fuel leakage rate to stabilize.
____
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-22-00
 ALL  ú ú 14 Page 544 ú Jun 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 715-501
 (4)
Make sure the fuel leakage rate is not more than 5 cc in 10 minutes.

 S 715-339

 (5)
Put these fuel pump control switches on the fuel management control module, M154, (pilots' overhead panel, P5) to the ON position:

 (a)  
MAIN 3 FWD

 (b)  
MAIN 3 AFT

 S 715-340
 (6)
Make sure the fuel leakage rate is not more than 5 cc in 10 minutes.

 S 715-341

 (7)  
Put these control switches on the fuel manangement control module, M154, to the off position:

 (a)  
MAIN 3 FWD

 (b)  
MAIN 3 AFT

 S 715-342
 (8)
Continue this test (if necessary) for the other spar valves, or do this procedure: Put the Airplane Back to the Usual Condition.

 K.
Test the Spar Valve for the No. 4 Engine

 NOTE: This test makes sure that the spar valve is in the correct
____
 closed position.

 S 865-343
 (1)
Make sure the FUEL CONTROL switches are in the CUTOFF position.

 S 865-344

 (2)  
Supply the electric power (AMM 24-22-00/201).

 S 715-295

 (3)  
Monitor the fuel leakage from the No. 4 engine fuel pump where you removed the drain plug.

 NOTE: Allow the fuel leakage rate to stabilize.
____
 S 715-346
 (4)
Make sure the fuel leakage rate is not more than 5 cc in 10 minutes.

 S 715-347

 (5)
Put these fuel pump control switches on the fuel management control module, M154, (pilots' overhead panel, P5) to the ON position:

 (a)  
MAIN 4 FWD

 (b)  
MAIN 4 AFT

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