(b)
Move the battery ground lead through the current monitor.
(c)
Put the current monitor in position.
(d)
Install the screws that hold the current monitor.
(e)
Connect the electrical connector to the current monitor.
(f)
Connect the battery ground lead (from the current monitor) to the APU battery connector and tighten the nut to 135-145 inch-pounds.
(g)
Close the APU battery connector.
(h)
Connect the APU battery connector to the APU battery.
S 864-007
CAUTION: CLOSE THESE CIRCUIT BREAKERS IN THE SEQUENCE SHOWN TO PREVENT
_______
DAMAGE TO THE APU BATTERY CHARGER.
(2) Remove the DO-NOT-CLOSE tag and close this circuit breaker on the E6 rack:
(a) APU BAT CHGR
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
AIRPLANES WITH EXTENDED STANDBY POWER; ú 24-31-07
ú ú 01 Page 403 ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 864-008
(3) Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P37 panel:
(a) 37B5 (Plate B), APU BATTERY CHARGER
S 864-009
(4) Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel:
(a) 6A4, BAT CUR MON PWR
D. Do a Test of the Current Monitor Installation.
S 864-010
(1) Supply electrical power (Ref 24-22-00).
S 864-011
(2) Make sure these circuit breakers on the overhead circuit breaker panel, P11, are closed: (a) 11B7, LIGHTS INSTR (b) 11N4, INSTRUMENT AND PANEL OVHD
S 714-012
(3) Do these steps on the standby power control panel on the pilots' overhead panel, P5: (a) Push the BAT switch to the ON position. (b) Make sure the white ON light in the BAT switch comes on. (c) Turn the STBY POWER switch to the BAT position. (d) Make sure the APU BAT DISCH light comes on. (e) Turn the STBY POWER switch to the AUTO position. (f) Make sure the APU BAT DISCH light goes off. (g) Push the BAT switch to the OFF position. (h) Make sure the yellow OFF light in the BAT switch comes on.
S 864-013
(4) Remove electrical power if it is not necessary (Ref 24-22-00).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
AIRPLANES WITH EXTENDED STANDBY POWER; ú 24-31-07
ú ú 02 Page 404 ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
MAIN BATTERY SHUNT - REMOVAL/INSTALLATION
_________________________________________
1. General
_______
A. The main battery shunt, M224, is outboard of the main battery in the forward equipment center.
TASK 24-31-09-004-001
2. Remove the Main Battery Shunt (Fig. 401)
_____________________________
A. Access
(1)
Location Zone
113/114 Area forward of NLG wheel well
(2)
Access Panel
113AL Forward equipment center access
B. Prepare for Removal
S 864-002
CAUTION: OPEN THESE CIRCUIT BREAKERS IN THE SEQUENCE SHOWN TO PREVENT
_______
DAMAGE TO THE MAIN BATTERY CHARGER.
(1) Open this circuit breaker on the right miscellaneous electrical equipment panel (referred to as the P37 panel) and attach a DO-NOT-CLOSE tag:
(a) 37B2, BATTERY CHARGERS MAIN
S 864-003
(2) Open these circuit breakers on the main power distribution panel (referred to as the P6 panel) and attach a DO-NOT-CLOSE tag:
(a)
GUN 051;
6L7, APU/MAIN BAT TIE
(b)
6L8, MAIN BAT CHGR
(c)
6L9, HOT BAT BUS
(d)
6L10, BAT BUS PWR
(e)
6L11, INV PWR BAT
(f)
6L12, CENTER BUS DC
(g)
6F6, LANDING GEAR ALTN EXT MOTOR
C. Remove the Battery Shunt
S 024-004
(1) Do these steps to remove the battery shunt:
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