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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 715-066
(7) When the LOW PRESSURE light for the boost pump goes off, put the switch for the boost pump to the OFF position.
(a) Make sure the LOW PRESSURE light stays off.
H. Test Procedure for the Operation of Each of the Boost Pumps While the Other Boost Pumps Operate
S 715-067
(1) On the P5 panel, set all the six switches for the boost pumps to the ON position.
(a) Make sure these lights go off and do the subsequent steps immediately: 1) All the LOW PRESSURE lights on the P5 panel 2) The MASTER CAUTION light 3) The FUEL annunciator light.
S 715-069
(2) Put these switches back to the OFF position and monitor the related lights in this sequence:
(a)
Put the switch for the FWD boost pump for the No. 1 tank back to OFF.
(b)
Make sure the LOW PRESSURE light for the FWD boost pump for tank NO. 1 comes on.
(c)
Put the switch for the AFT boost pump for the No. 1 tank back to OFF.
(d)
Make sure the LOW PRESSURE light for the AFT boost pump for the No. 1 tank comes on.
(e)
Make sure the MASTER CAUTION and the FUEL annunciator light come on.
(f)
Put the boost pump switches for the No. 1 tank back to the ON position.
S 715-070
(3) Put these switches back to the OFF position and monitor the related lights in this sequence:
(a)
Put the switch for the FWD boost pump for the No. 2 tank back to OFF.
(b)
Make sure the LOW PRESSURE light for the FWD boost pump for tank NO. 2 comes on.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
(c)
Put the switch for the AFT boost pump for the No. 2 tank back to OFF.
(d)
Make sure the LOW PRESSURE light for the AFT boost pump for the No. 2 tank comes on.
(e)
Make sure the MASTER CAUTION and the FUEL annunciator light come on.
(f)
Put the boost pump switches for the No. 2 tank back to the ON position.
S 865-175
(4)
Make sure all of the boost pump switches are in the ON position.
S 715-071
(5)
Operate these circuit breakers and monitor the related lights in this sequence:
(a)
On the P6 panel, open the circuit breaker for the RIGHT boost pump for the center tank (BOOST PUMP CTR TANK RIGHT).
(b)
Make sure the LOW PRESSURE light for the RIGHT boost pump for the center tank comes on.
(c)
On the P6 panel, open the circuit breaker for the LEFT boost pump for the center tank (BOOST PUMP CTR TANK LEFT).
(d)
Make sure the LOW PRESSURE light for the LEFT boost pump for the center tank comes on.
(e)
Make sure the MASTER CAUTION light and the FUEL annunciator light come on.
S 865-176
(6)
On the P6 panel, close the circuit breakers for the LEFT and the RIGHT boost pumps for the center tank (BOOST PUMP CTR TANK LEFT and BOOST PUMP CTR TANK RIGHT).
S 715-074
(7)
Put all the switches for the boost pumps to the OFF position.
I. Put the Airplane Back to Its Usual Condition
S 865-075
(1) Push the engine fire switches on the P8 panel.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 865-076
(2) Make sure these circuit breakers are closed:
(a) P6 Main Power Distribution Panel 1) DIM AND TEST 2) INDICATOR MASTER DIM BUS 3) FUEL on the master caution bus 4) ANNUNCIATOR NO. 1 on the master caution bus 5) ANNUNCIATOR BAT on the master caution bus.
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