S 865-017
(3)
Energize the external power cable.
(a) Make sure that the EXTERNAL POWER - CONN and NOT IN USE lights on the P19 panel come on.
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737-300/400/500MAINTENANCE MANUAL
(b) Make sure that the GRD POWER AVAILABLE light on the P5-4 panel comes on.
S 865-018
(4) Push the BAT switch on the P5-13 panel to ON.
(a) Make sure that these lights on the P5-4 panel come on: 1) TRANSFER BUS OFF 1 and 2 2) BUS OFF 1 and 2 3) GEN OFF BUS 1 and 2
S 765-019
(5) Turn the ac meters switch on the P5-13 panel to GRD PWR.
(a)
Make sure that the ac voltmeter shows 115 | 5 volts.
(b)
Make sure that the frequency meter shows 400 | 5 Hz.
S 865-020
(6) Push the GROUND SERVICE switch on the forward attendant's panel to ON.
(a) Make sure that the EXTERNAL POWER - NOT IN USE light on the P19 panel goes off.
S 865-021
(7) Push the GRD PWR switch on the P5-4 panel to ON.
(a)
Make sure that these lights go off:
1) TRANSFER BUS OFF 1 and 2
2) BUS OFF 1 and 2
(b)
Make sure that the GROUND SERVICE switch moves to the OFF position.
S 815-022
(8)
If the indications are incorrect when you supply external power, do the trouble-shooting for the ac external power (Ref 24-41-00/101).
S 865-009
(9)
Remove the external power if it is not necessary (Ref 24-22-00/201).
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737-300/400/500MAINTENANCE MANUAL
EXTERNAL POWER RECEPTACLE - REMOVAL/INSTALLATION
________________________________________________
1. General_______
A. This procedure contains two tasks:
(1)
The removal of the external power receptacle
(2)
The installation of the external power receptacle.
B.
The external power receptacle is on the lower right side of the airplane. It is installed forward of the wheel well for the nose gear.
C.
The external power receptacle is part of the pressure seal of the airplane. You must seal the receptacle after you install it.
TASK 24-41-11-004-001
2. External Power Receptacle Removal (Fig. 401)_________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
B.
Access
(1)
Location Zone
202 Lower Nose Compartment
(2)
Access Panel
1101 External Power Receptacle Door
C.
Procedure
S 044-002
(1)
Make sure all electrical power is off (AMM 24-22-00/201).
S 014-003
(2)
Disconnect all electrical power cables from the external power receptacles.
S 014-004
(3)
Open the door 1101 for the external power receptacle, if it is closed.
S 014-005
(4)
Open the forward panel on the right side of the nose wheel well to get access to the receptacle.
S 034-006
(5)
Disconnect the electrical wires from the receptacle:
(a)
Remove the three nuts that attach the conductor guard to the receptacle pan.
(b)
Attach an identification tag to each wire.
(c)
Remove the nuts and washers that attach the six wires to the receptacle studs.
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