B.
Equipment

 (1)  
G57NB-5 Collar - Circuit Breaker
 Nylon Molding Corp.
 1617 S. California
 Monrovia, CA. 91016 (five are necessary)

 C.
Access

 (1)  
Location Zones
 221 Control Cabin - Left
 222 Control Cabin - Right

 D.
Procedure

 S 862-065
 (1)  
Make sure the APU control switch on the P5 overhead panel is OFF and attach an APU INOPERATIVE tag.

 S 862-066

 (2)  
Open these circuit breakers and install collars:

 (a)  
P6 Main Power Distribution Panel
 1) 6G5, APU FUEL SHUTOFF VALVE
 2) 6H22, APU ISO VLV AIR SUPPLY PWR
 3) 6K18, APU ALTN CONT

 (b)  
P83 Aft APU Equipment Control and Circuit Breaker Panel 1) APU PRIME CONT 2) APU START

 TASK 49-11-00-442-067
 9.  APU System Activation (With APU Installed)__________________________________________
 A. Access
 (1)  
Location Zones
 221 Control Cabin - Left
 222 Control Cabin - Right

 B.
Procedure

 S 862-068
 (1)  
Remove the collars and close these circuit breakers:

 (a)  
P6 Main Power Distribution Panel
 1) 6G5, APU FUEL SHUTOFF VALVE
 2) 6H22, APU ISO VLV AIR SUPPLY PWR

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 49-11-00
 ALL  ú ú 03 Page 228 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 3) 6K18, APU ALTN CONT
 (b)  P83 Aft APU Equipment Control and Circuit Breaker Panel 1) APU PRIME CONT 2) APU START
 S 862-069
 (2)  Remove the APU INOPERATIVE tag from the APU control switch on the P5 overhead panel.
 TASK 49-11-00-042-070
 10. APU System Deactivation (With APU Removed) (Fig. 204, Fig. 205)
__________________________________________
 A. General
 (1)  
After you correctly prepare the airplane, you can send it out with the APU removed. To prepare the APU compartment you must put away the loose components. These components are the forward mounts, the pneumatic ducts, the electrical bundles, and the hoses.

 (2)  
You must put covers on the electrical and the plumbing connections and the exhaust duct opening to prevent contamination. You must disconnect the air inlet door. Open the electrical circuit breakers and disconnect the APU fuel valve and APU isolation valve to fully prepare the airplane. This task gives the steps to disconnect and connect the APU system.

 B.
References

 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 32-00-30/201, Landing Gear Door Locks

 (3)  
AMM 49-11-01/401, Auxiliary Power Unit

 (4)  
AMM 49-81-01/401, Outer Exhaust Duct

 C.
Equipment

 (1)  
G49006-17 Kit - APU Dispatch. This kit has a storage box and contains these parts:

 (a)  
8 protective caps

 (b)  
5 protective plugs (for the drain lines)

 (c)  
9 circuit breaker collars

 (d)  
1 boot cap assembly (for the exhaust duct)

 (e)  
1 support angle assembly (for the forward shockmounts)

 (f)  
1 cap (for the pneumatic bleed duct)

 (g)  
2 small pads

 (h)  
1 large pad

 (i)  
Cord (minimum of 40 feet).

 D.
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

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 ALL  ú ú 06 Page 229 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
　
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