(c)
Move the APU battery tray aft into the E6 rack.
(d)
Lock the APU battery tray.
(e)
Connect the electrical connectors to the APU battery.
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CAUTION:_______CLOSE THE CIRCUIT BREAKERS IN THE SEQUENCE SHOWN. IF YOU DO NOT CLOSE THE CIRCUIT BREAKERS IN THIS SEQUENCE, DAMAGE TO THE BATTERY CHARGER CAN OCCUR.
(f)
Remove the DO-NOT-CLOSE tag, and close this E6 rack circuit breaker: 1) APU BAT CHGR
(g)
Remove the DO-NOT-CLOSE tag, and close this P37 panel circuit breaker: 1) 37B5 or 37K2, APU BATTERY CHARGER
(h)
AIRPLANES WITH EXTENDED STANDBY POWER; Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel: 1) 6D2, BAT XFER CONT
E. Do these steps to check the APU battery ground stud:
S 214-030
(1) If the terminal lug, ground strap or stud is damaged, deformed, discolored or annealed, do these steps:
(a) Repair or replace the terminal lug, ground strap or stud (SWPM 20-30-00).
NOTE: If the terminal lug is annealed, replace the lug with a
____ high temperature terminal lug (SWPM 20-30-11).
CAUTION: DO NOT PULL ON THE GROUND WIRE AFTER THE GROUND STUD IS
_______ TIGHTENED. DAMAGE TO EQUIPMENT OR AIRPLANE STRUCTURE MAY OCCUR.
(b)
Make sure each APU ground stud nut is torqued from 180 to 200 pound-inch (SWPM 20-30-00).
(c)
Make sure the electrical bonding of the APU ground studs are 0.0001 ohms (SWPM 20-20-00).
S 214-032
(2) If the terminal lug, ground strap or stud is not damaged, deformed, discolored or annealed but the electrical bonding of the ground stud is in question, do these steps:
CAUTION: DO NOT PULL ON THE GROUND WIRE AFTER THE GROUND STUD IS
_______ TIGHTENED. DAMAGE TO EQUIPMENT OR AIRPLANE STRUCTURE MAY OCCUR.
(a)
Make sure each APU ground stud nut is torqued from 180 to 200 pound-inch (SWPM 20-30-00).
(b)
Make sure the electrical bonding of the APU ground studs are 0.0001 ohms (SWPM 20-20-00).
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S 164-031
(3) Clean the fuselage area next to the APU ground studs. Make sure there is no dust on the APU ground stud area.
F. Do a test of the APU battery installation.
S 864-009
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-010
(2)
Make sure the six EICAS circuit breakers on the overhead panel (referred to as the P11 panel) are closed.
S 914-023
(3)
AIRPLANES WITH EXTENDED STANDBY POWER; Do the Maintenance Message Erase Procedure (AMM 31-41-00/201).
S 864-014
(4)
Make sure the STBY POWER switch, on the pilots' overhead panel P5, is set to the AUTO position.
S 714-011
(5)
Do a test of the APU battery as follows:
(a)
AIRPLANES WITH EXTENDED STANDBY POWER; Push the ECS MSG switch on the EICAS maintenance panel on the right side panel (P61). 1) AIRPLANES WITH EXTENDED STANDBY POWER;
Make sure the EICAS message, APU BAT CHGR, does not show on the bottom display.
(b)
Make sure the BAT switch, on the pilots' overhead panel P5, is ON.
(c)
Turn the STBY POWER switch to the BAT position.
(d)
Push the ELEC HYD switch on the EICAS maintenance panel on the P61 panel.
(e)
Make sure the value that follows is below APU/BAT on the bottom EICAS display. 1) DC-V = 24 |4
(f)
Turn the STBY POWER switch on the standby power panel to the AUTO position.
