G.
Put the Airplane Back to Its Usual Condition

 S 414-032
 (1)  
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.

 (g)  
Lift the left access door until the two APU access doors are approximately aligned.

 (h)  
Close the two APU access doors.

 (i)  
Close the six latches on the right access door.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 49-27-03
 ALL  ú ú 03 Page 406 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 CHIP DETECTOR - INSPECTION/CHECK
________________________________
 1.  General
_______
 A.  This procedure has the task to inspect the two chip detectors.
 B.  There are two chip detectors on the APU. One chip detector is on the bottom right side of the accessory gearbox. The other chip detector is on the bottom left side of the load gearbox near the drain collector bracket.
 TASK 49-27-04-206-001
 2.  Chip Detector Inspection (Fig. 601)
________________________
 A.  References
 (1)  
AMM 12-22-02/301, Auxiliary Power Unit

 (2)  
AMM 49-11-00/201, Auxiliary Power Unit

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

 (4)  
AMM 49-27-03/401, Oil Filter Element

 B.  
Equipment

 (1)  
Air Source - Regulated, Dry Filtered, Compressed 60-105 psig (414-723.9 kPa) (22 SCFM) (commercially available)

 (2)  
Weight - Eight Ounces (0.23 Kilogram) (Minimum), Ferromagnetic Steel (commercially available)

 C.  
Consumable Materials

 (1)  
B00130 Alcohol, Isopropyl - TT-I-735

 (2)  
G00034 Cloth, Process Cleaning Absorbent Wiper (Cheesecloth, Gauze)

 -BMS15-5
 (3)  
G50097 Lockwire, Corrosion Resistant Steel (0.025 Inch Diameter) -MS9226-03

 (4)  
D00418 Oil - Aircraft Turbine Engine

 D.
Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 601 | 1 | Packing | 49-27-04 | 01 | 20 | | | 2 | Chip Collector (Chip Detector) | | | 5 | | | 4 | Packing | | | 15 | | | 5 | Packing | | | 10 | 2.......….......…...................................…...........…......….......1

 E.  
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

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 49-27-04
 ALL  ú ú 01 Page 601 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 F. Prepare for the Inspection
 S 866-011
　
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