24-31-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(3) S 864-081Remove the DO-NOT-CLOSE tags and close these circuit breakers: (a) On the P414 panel: 1) 414P18, MAIN BATTERY CHARGER (b) On the P6 panel: 1) 6K1 MAIN BATTERY HOT BUS CONTROL
(4) S 864-045Set the flight compartment clocks to the correct date and Greenwich Mean Time (GMT)(AMM 31-25-00/001).
(5) S 094-025Remove the hoist.
(6) S 714-035Do this task: "Operational Test of the Main Battery" (AMM 24-31-01/501).
(7) S 864-034Remove electrical power, if it is not necessary (AMM 24-22-00/201).
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24-31-01
ALL ú ú 03 Page 406 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
MAIN BATTERY - ADJUSTMENT/TEST
______________________________
1. General_______
A. This procedure contains a task to do the operation test of the main battery (M7423).
B. The main battery is installed between the fuselage and the wheel well for the nose gear, on the right side. Access to the main battery is through a small access opening forward of the E/E compartment.
TASK 24-31-01-705-035
2. Operational Test of the Main Battery_____________________________________
A. References
(1)
24-22-00/201, Manual Control
(2)
45-10-00/201, Central Maintenance Computer System
(3)
IPC 24-31-01 Fig. 1
(4)
WDM 24-31-11
(5)
SSM 24-31-01
B.
Access
(1)
Location Zone 116 Area Between Nose Gear Well and Fuselage, RH
C.
Do a Test of the Main Battery
S 865-037
(1)
Supply electrical power (Ref 24-22-00/201).
S 715-038
(2)
Do a test of the main battery:
(a)
Get access to the maintenance page for the electrical system (AMM 45-10-00/201).
(b)
Make sure the DC-Volts for the main battery is more than 24 volts.
(c)
Make sure the DC-Amps is in the positive CHG mode.
(d)
Set the STANDBY POWER switch, on the P5 panel, to BAT.
(e)
Make sure the main EICAS display operates correctly.
(f)
Make sure the advisory EICAS messages >BAT DISCH MAIN and BAT DISCH APU show on the main EICAS screen.
(g)
Set the STANDBY POWER switch, on the P5 panel, to AUTO.
(3)
Remove electrical power, if it is not necessary (Ref 24-22-00/201).
S 865-036
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24-31-01
ALL ú ú 01 Page 501 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
BATTERY CONNECTOR - INSPECTION/CHECK
____________________________________
1. General_______
A. This procedure has these tasks.
(1)
The inspection and check of the main and APU battery connectors (DM7423A), (DM7423B), (DM7432A) and (DM7432B).
B.
The main battery is installed between the fuselage and the wheel well for the nose gear, on the right side. Access to the main battery is through a small access opening forward of the E/E compartment.
C.
The APU battery is installed on the E-33 equipment rack with the APU battery charger. The E-33 equipment rack is on the left side of the aft passenger cabin. Access to the E-33 equipment rack is through the E-33 access door.
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