757 MAINTENANCE MANUAL
APU BATTERY - REMOVAL/INSTALLATION
__________________________________
1. General_______
A. The APU battery is in the aft equipment-center-rack (refered to as the E6 rack).
TASK 24-31-03-004-001
2. Remove the APU Battery______________________
A. Access
(1)
Location Zones
(a)
154 Aft cargo compartment (LH side)
(b)
211 Control cabin - section 41 (LH side)
(c)
212 Control cabin - section 41 (RH side)
(2)
Access Panels
(a) 822 No. 2 cargo compartment door
B. Prepare for Removal (Fig. 401)
S 864-002
CAUTION:_______OPEN THE CIRCUIT BREAKERS IN THE SEQUENCE SHOWN. FAILURE TO OPEN THE CIRCUIT BREAKERS IN THIS SEQUENCE CAN CAUSE DAMAGE TO THE APU 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) 37B5 or 37K2, APU BATTERY CHARGER
S 864-003
(2) Open this circuit breaker on the aft equipment center rack (referred to as the E6 rack) and attach a DO-NOT-CLOSE tag:
(a) APU BAT CHGR
S 864-019
(3) AIRPLANES WITH EXTENDED STANDBY POWER; Open this circuit breaker on the P6 panel and attach a DO-NOT-CLOSE tag:
(a) 6D2, BAT XFER CONT
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
AFT CARGO
DOOR
AFT CARGO DOOR
AFT EQUIPMENT CENTER RACK, E6
SEE A
APU BATTERY, M208
SEE B
FWD
AFT EQUIPMENT CENTER RACK, E6
A
MAIN BATTERY CONNECTOR
FWD
HOLD-DOWN
THERMAL SCREWS
SENSOR (6 LOCATIONS)
CONNECTOR
APU BATTERY, M208
B
APU Battery Installation Figure 401
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 014-005
(4) Open the forward doors on the E6 rack.
C. Remove the APU battery
S 024-006
(1) Do these steps to remove the APU battery:
(a)
Disconnect the electrical connectors from the APU battery.
(b)
Release the APU battery tray.
(c)
Move the APU battery tray out.
(d)
Remove the screws that hold the APU battery in the tray.
WARNING:_______DO NOT REMOVE THE APU BATTERY WITHOUT AID. BATTERY WEIGHS 96 POUNDS AND INJURY CAN OCCUR IF BATTERY REMOVAL IS DONE WITHOUT AID.
(e)
Remove the APU battery.
TASK 24-31-03-404-007
3. Install the APU Battery (Fig. 401)_______________________
A. Equipment
(1) Bonding meter - Model T-477W
Avtron Manufacturing, Inc.,
Cleveland, Ohio
B. References
(1)
SWPM 20-20-00, Standard Wiring Practice Manual D6-54446.
(2)
AMM 24-22-00/201, Electrical Power - Control
(3)
AMM 31-41-00/201, EICAS
C. Access
(1)
Location Zones
(a)
154 Aft cargo compartment (LH side)
(b)
211 Control cabin - section 41 (LH side)
(c)
212 Control cabin - section 41 (RH side)
(2)
Access Panels
(a) 822 No. 2 cargo compartment door
D. Procedure
S 424-008
(1) Do these steps to install the APU battery:
WARNING:_______DO NOT INSTALL THE APU BATTERY WITHOUT AID. BATTERY WEIGHS 96 POUNDS AND INJURY CAN OCCUR IF INSTALLATION IS DONE WITHOUT AID.
(a)
Install the APU battery in the tray.
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