EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 49-27-06
 ALL  ú ú 01 Page 406 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (b)  
Disengage the support rods for the APU access doors.

 (c)  
Put the support rods in the clips on the inner side of the APU access doors.

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

 (e)  
Close the APU access doors.

 (f)  
Close the latches on the APU access doors.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 49-27-06
 ALL  ú ú 04 Page 407 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 OIL PUMP - REMOVAL/INSTALLATION
_______________________________
 1.  General_______
 A. This procedure gives the tasks to remove and install the APU oil pump.
 B. The APU oil pump is on the forward end of the accessory gearbox.
 TASK 49-27-07-024-001
 2.  Oil Pump Removal (Fig. 401)________________
 A. Standard Tools and Equipment
 (1)  
Pliers - Snap Ring, 120°

 B.
References

 (1)  
12-22-02/301, Auxiliary Power Unit (Oil Change)

 (2)  
AIPC 49-16-00, Fig. 2, AIPC 49-27-00, Fig. 1

 C.
Access

 (1)  
Location Zone

 318  APU Compartment-Bottom Inlet Plenum, Accessory Gearbox Forward Face

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

 D.
Procedure

 S 864-003
 (1)  
Make sure the APU control switch on the P5 panel is OFF and attach a DO-NOT-OPERATE tag.

 S 864-070

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

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

 (b)  
P83 Panel, E8 Aft Equipment Center
 1) APU PRIMARY CONT

 S 014-004
 (3)  
Open the APU access doors.

 (a)  
Open the latches on the APU access doors.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 49-27-07
 ALL  ú ú 01 Page 401 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

1. OIL FILTER COUPLING TUBES
8. NUT
4. PACKING
2. PRESSURE VALVE 6. OIL-SCAVENGE-TUBE
TUBE
3. RETAINER RING 7. PACKING 4A. PACKING 5. PACKING 9. PACKING
23. RETAINER RING 10. OIL TUBE
22. PRESSURE-PUMP TUBE
11. PACKING
21. PACKING
12. NO. 4 BEARING
20. OIL PUMP
SCAVENGE-TUBE
19. PACKING 
13. NUT 
24. GAS-GENERATOR  18. WASHER 
HOUSING  17. BRACKET 
DRAIN-TUBE 
13. NUT 
18. WASHER 
15. BRACKET 

25.
 COUPLING NUT

26.
 COUPLING NUT

PARTIAL VIEW OF APU
PORT SIDE

Oil Pump - Removal/Installation
Figure 401 (Sheet 1)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 49-27-07
 ALL  ú ú 01 Page 402 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

32. ACCESSORY GEARBOX
27. LOAD GEARBOX
35. STRAINER SEE ASLEEVE
36. PACKING 33A. PACKING
34. OIL
28A. PACKING
　
中國航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 機載輔助動力 2(24)