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24-31-02
ALL ú ú 01.1 Page 402 ú Sep 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
(c)
Identify the wires on the terminals for installation.
(d)
Remove the wires from the terminals.
S 024-005
(2) Remove the battery charger (AMM 20-10-01/401).
TASK 24-31-02-404-006
3. Install the Battery Charger (Fig. 401)___________________________
A. References
(1)
AMM 20-10-01/401, E/E Rack Mounted Components
(2)
AMM 24-22-00/201, Electrical Power - Control
B. Access
(1)
Location Zones
113/114 Area forward of NLG wheel well
211/212 Flight compartment
(2)
Access Panel
113AL Forward equipment center access
C. Install the Battery Charger
S 424-007
(1)
Install the battery charger (AMM 20-10-01/401).
S 434-008
(2)
Do these steps to connect the battery charger:
(a)
Install the wire, washer, lockwasher and nut on the positive terminal of the battery charger.
(b)
Tighten the nut on the positive terminal of the battery charger to 170-190 inch-pounds (19.2-21.5 Newton meters).
(c)
Install the wire, washer, lockwasher and nut on the negative terminal of the battery charger.
(d)
Tighten the nut on the negative terminal of the battery charger to 135-145 inch-pounds (15.3-16.4 Newton meters).
(e)
Install the terminal cover on the battery charger.
(f)
Connect the electrical connector to the battery charger.
S 864-009
CAUTION: CLOSE THESE CIRCUIT BREAKERS IN THE SEQUENCE SHOWN TO PREVENT
_______ DAMAGE TO THE MAIN BATTERY CHARGER.
(3) Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel:
(a) 6L8, MAIN BAT CHGR
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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A
757 MAINTENANCE MANUAL
S 864-010
(4) Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P37 panel:
(a) 37B2, MAIN BATTERY CHARGER
D. Do a test of the battery charger installation
S 864-011
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-012
(2)
Make sure the six EICAS circuit breakers on the overhead circuit breaker panel, P11, are closed.
S 714-013
(3)
Do a test of the battery charger, as follows:
(a)
Push the ELEC HYD switch on the EICAS MAINT panel on the right side panel, P61.
(b)
Push the BAT switch on the pilots' overhead panel, P5, to the ON position.
(c)
Turn the STBY POWER switch on the pilots' overhead panel, P5, to the BAT position for one minute.
(d)
Turn the STBY POWER switch to the AUTO position and make sure these values show below STBY/BAT on the bottom EICAS display.
NOTE:____These values will occur quickly. Make sure you monitor the bottom EICAS display carefully.
DC-A 38 |5
DC-V increases to 32 | 4 volts dc then decreases to 28 |2 volts dc.
(e) Make sure the DC-A value that shows below STBY/BAT on the bottom EICAS display is positive.
S 864-014
(4) Remove electrical power if it is not necessary (AMM 24-22-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-31-02
ALL ú ú 01 Page 404 ú Sep 28/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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