(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.
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28-22-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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.
____
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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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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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