(a)  
P6-2 Main Power Distribution Panel
 1) 6K18, APU ALTN CONT

 (b)  
P83 Aft APU Equipment Control and Circuit Breaker Panel 1) APU PRIME CONT

 S 864-018
 (2)  
Remove the DO-NOT-OPERATE tag from the APU control switch on the P5 overhead panel.

 S 414-023

 (3)  
Close the left APU access door, 317AL, and right APU access door, 318AR:

 (a)  
Remove the two quick-release pins, disconnect the two hold-open rods and put the two hold-open rods in the two clips on the right access door.

 (b)  
Install the two quick-release pins in the two brackets on the right APU compartment bulkhead.

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A 747-400 MAINTENANCE MANUAL
 (c)  Lift the right access door until you can install the lanyard on the pin at the aft APU compartment bulkhead.
 NOTE:____ The lanyard will hold the right access door on the APU compartment bulkhead.
 (d)  Remove the two quick-release pins, disconnect the two hold-open rods and put the two hold-open rods in the two clips on the left access door.
 (e) (f) (g) (h) (i)  Install the two quick-release pins in the two brackets on the left APU compartment bulkhead.Make sure the insulation covers are correctly attach to the APU compartment firewall.Lift the left access door until the two APU access doors are approximately aligned.Close the two APU access doors.Close the six latches on the right access door.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 IGNITER PLUG - REMOVAL/INSTALLATION
___________________________________
 1.  General
_______
 A.  This procedure has these tasks:
 (1)  
A removal of the igniter plug

 (2)  
An installation of the igniter plug.

 B.  
The igniter is referred to as the igniter plug.

 C.  
The two igniter plugs are installed at the 5 o'clock and 7 o'clock positions on the gas generator case.

 TASK 49-41-04-004-001
 2.  Igniter Plug Removal (Fig. 401)
____________________
 A.  Access
 (1)  
Location Zones
 221 Control Cabin - Left
 222 Control Cabin - Right
 310 Fuselage - Station 2360 to Station 2792

 (2)  
Access Panels
 317AL APU Access Door - Left
 318AR APU Access Door - Right

 B.  
Prepare for the Removal

 S 864-002
 (1)  
Make sure the APU control switch on the P5 overhead panel is OFF and attach a DO-NOT-OPERATE tag.

 S 864-003

 (2)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6-2 Main Power Distribution Panel
 1) 6K18, APU ALTN CONT

 (b)  
P83 Aft APU Equipment Control and Circuit Breaker Panel 1) APU PRIME CONT

 S 014-021
 (3)  
Open the left APU access door, 317AL, and right APU access door, 318AR:

 (a)  
While you hold the two APU access doors in the closed position, open the six latches on the right access door.

 NOTE: The left access door will open fully and the right
____ access door will drop approximately one inch (2.5 cm) from the fuselage frame when the last latch is opened.
 NOTE: A lanyard is attached to the aft end of the right access
____ door to hold the access door to the APU compartment bulkhead.
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