747-400 AMM 飞机维护手册 机载辅助动力 2(72)

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 (f)  Do these steps to connect the electrical connector D95006 (P6) (3) to the ignition exciter (2): 1) Connect the electrical connector D95006 (P6) (3) to the
 ignition exciter (2).
 2)  Tighten the coupling ring on the electrical connector D95006 (P6) (3) until the electrical connector is at the bottom of the receptacle and the connection is tight.
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747-400 MAINTENANCE MANUAL
 3)  Make sure the electrical connection is not loose when you move the APU harness.
 S 214-027
 (2)  
Do a visual check of the two EGT bus bars:

 (a)  
Make sure the two EGT bus bars do not touch each other and are not damaged.

 (b)  
Make sure there are no unwanted metal parts on the two EGT bus bars.

 (c)  
If you find damage, the two EGT bus bars touch each other or there are unwanted metal parts on the two EGT bus bars, repair or replace the positive (KP) and/or negative (KN) bus bar(s).

 E.  
Put the Airplane Back to Its Usual Condition

 S 864-018
 (1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (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 864-019
 (2)  
Remove the DO-NOT-OPERATE tag from the APU control switch on the P5 overhead panel.

 S 414-024

 (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.

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

 (f)  
Make sure the insulation covers are correctly attach to the APU compartment firewall.

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 (g) (h) (i)  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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 IGNITION CABLE - ADJUSTMENT/TEST
________________________________
 1.  General_______
 A.  This procedure has the task to do a test of the two ignition cables for continuity and insulation resistance.
 TASK 49-41-05-705-001
 2.  Ignition Cable Test___________________
 A.  Equipment
 (1)  
Ohmmeter (or alternative tool)

 (a)  
C15292 Ohmmeter - Electrical Bonding (also called T477W) (recommended) 01014 Avtron Mfg. Inc. 10409 Meech Ave., Cleveland, OH 44105-4166

 (b)  
Model 1010-A Micro-Ohmmeter - Autoranging/Autotest, 10 Micro-ohms to 200 Ohms, Accuracy: 0.05% (alternative) 3AD17 Barberree Custom Design 1401 Laurier House, 1600 Beach Ave., Vancouver, BC Canada VG6 1Y6, DC
　
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