(a)  
Loosen the V-band clamp.

 (b)  
Move the actuator assembly until you can get access to the clevis plate through the actuator mounting hole.

 (c)  
Put your hand through the actuator mounting hole and disconnect the bolt which attaches the link to the door.

 (d)  
Remove the link and the actuator assembly.

 S 092-029
 (5)  
Remove the link assembly from the actuator container and the clevis:

 (a)  
Remove the large locknut from the end of the clevis.

 (b)  
Remove the link from the actuator container.

 (c)  
Remove the bolt that attaches the clevis to the link.

 S 412-030
 (6)
Install the actuator for the air inlet door (Ref 49-15-04/401).

 S 092-036

 (7)  
Remove the collars and close these circuit breakers:

 (a)  
P83 Panel, E8 Aft Equipment Center
 1) AIR INLET DOOR
 2) APU PRIMARY CONT
 3) APU START

 (b)  
P6 Main Power Supply Panel
 1) 6K18 APU ALTN CONT

 S 862-037
 (8)  Remove the DO-NOT-OPERATE tag from the APU control switch on the P5 panel.
 TASK 49-15-00-842-038
 5. APU Air Inlet Door Activation (Manual Actuator Operation)
_________________________________________________________
 A. Procedure
 S 092-041
 (1)  
Remove the collars and close these circuit breakers:

 (a)  
P83 Panel, E8 Aft Equipment Center
 1) AIR INLET DOOR
 2) APU PRIMARY CONT
 3) APU START

 (b)  
P6 Main Power Supply Panel
 1) 6K18 APU ALTN CONT

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 49-15-00
 ALL  ú ú 01 Page 209 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 862-042
 (2)  Remove the APU INOPERATIVE tag from the APU control switch on the P5 panel.
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 49-15-00
 ALL  ú ú 01 Page 210 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 APU AIR INLET - ADJUSTMENT/TEST
_______________________________
 1.  General_______
 A.  This procedure contains a task to do an operational test of the APU air inlet. You can do the operational test during the usual APU start and shutdown procedures. This task makes sure the air inlet system operates correctly. It is not necessary to adjust the system or do a system test.
 TASK 49-15-00-705-001
 2.  APU Air Inlet - Operational Test________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Electrical Power

 (2)  
AMM 31-61-00/501, Integrated Display System (IDS)

 (3)  
AMM 45-10-00/501, Central Maintenance Computer (CMC)

 (4)  
AMM 49-11-00/201, Auxiliary Power Unit (Start and Operate APU)

 B.  
Access

 (1)  
Location Zone
 317 APU Compartment, LH
 318 APU Compartment, RH

 (2)  
Access Panel
 317AL APU Access Door
 318AR APU Access Door

 C.  
Preconditions

 S 865-008
 (1)  
These conditions are necessary for this task:

 (a)  
Electrical Power On (AMM 24-22-00/201).

 (b)  
Integrated Display System (IDS), serviceable (AMM 31-61-00/501).

 (c)  
Central Maintenance Computer (CMC), serviceable (AMM 45-10-00/501).

 D.  
Procedure

 S 715-006
 (1)  
Do the operational test of the air inlet:

 (a)  
Open the AIR INLET DOOR circuit breaker on the P83 panel in the E8 aft equipment center.
　
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