747-400 AMM 飞机维护手册 滑油 OIL(86)

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 B.  There are four last chance oil strainers installed in the oil pressure supply tubes that follow:
 (1)  
The pressure manifold for the No. 1, 1.5, and 2 bearing to the rear of the intermediate case at approximately the 9 o'clock position

 (2)  
The pressure manifold for the main and angle gearbox on the top of the fuel/oil cooler at approximately the 9 o'clock position

 (3)  
The pressure manifold for the No. 3 bearing to the rear of the fuel/oil cooler at approximately the 9 o'clock position

 (4)  
The pressure manifold for the No. 4 bearing on the turbine exhaust case between the flanges R and S at the 10:30 o'clock position

 C.  
The procedures necessary for the removal/installation of the No. 1, 1.5, and 2, or No. 3 (Without PW SB 79-52) last chance oil strainer are the same and the instructions are given together. The procedures necessary for the removal/installation of the main and angle gearbox or last chance oil strainer for the No. 4 bearing are given in different instructions for each strainer.

 D.  
You can get access to the last chance oil strainers through the left thrust reverser.

 TASK 79-21-16-004-001-N00
 2.  Remove the No. 1, 1.5, and 2 Bearing, or No. 3 Bearing (Without PW SB 79-52)____________________________________________________________________________ Last Chance Oil Strainer (Fig. 401)___________________________________
 A.  Standard Tools and Equipment
 (1)  
Container - 1 U.S. gallon (4 liter) capacity,
 used to catch the oil

 B.  
References

 (1)  
AMM 71-11-04/201, Fan Cowl Panels

 (2)  
AMM 71-11-06/201, Core Cowl Panels

 (3)  
AMM 78-31-00/201, Thrust Reverser System

 (4)  
IPC 79-21-51 Fig. 05

 C.  
Access

 (1)  
Location Zone
 412 Engine 1 - Intermediate Case 9 o'clock
 422 Engine 2 - Intermediate Case 9 o'clock
 432 Engine 3 - Intermediate Case 9 o'clock
 442 Engine 4 - Intermediate Case 9 o'clock

 (2)  
Access Panel
 415 Left Thrust Reverser Half - Engine 1
 425 Left Thrust Reverser Half - Engine 2
 435 Left Thrust Reverser Half - Engine 3
 445 Left Thrust Reverser Half - Engine 4

 

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 79-21-16
 ALL  ú ú N01 Page 401 ú Jun 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
INTERMEDIATE CASE (REF)
SEE F
SEE D
SEE A
FWD  SEE B LAST CHANCE OIL STRAINER NO. 1, 1.5 AND 2 BEARING  SEE C LAST CHANCE OIL STRAINER MAIN AND ANGLE GEARBOX 
A 
HOUSING OIL STRAINER LAST CHANCE  LAST CHANCE OIL STRAINER 3.  4. BOLT (2 LOCATIONS) 
1. PACKING 
OIL STRAINER LAST CHANCE2.  HOUSING OIL STRAINER  5. PACKING 
B  C 

Last Chance Oil Strainer Installation
Figure 401 (Sheet 1)

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 79-21-16
 ALL  ú ú N01 Page 402 ú Jun 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
FUEL/OIL COOLER (REF)
NO. 3 BEARING LAST FWD CHANCE OIL STRAINER E
SEE E
D
6.  TOP NO. 4 BEARING OIL
6.  TOP NO. 4 PRESSURE TUBE
BEARING OIL
PRESSURE TUBE

7.  TUBE NUT FOR THE INTERNAL TUBE
11.  HEAT
SHIELD

8.  BOLT NO. 4 BEARING (2 LOCATIONS)
LAST CHANCE
OIL STRAINER

13. LAST CHANCE SEE G
OIL STRAINER
9.  HOSE CLAMP (2 LOCATIONS)
10. NUT (2 LOCATIONS)
TURBINE 12. PACKING EXHAUST CASE (REF)
LOWER NO. 4 FWD BEARING OIL PRESSURE TUBE
F
1
ENGINES WITHOUT PW SB 79-52
Last Chance Oil Strainer Installation
Figure 401 (Sheet 2)

LAST CHANCE OIL STRAINER HOUSING
1.  
PACKING

2.  
LAST CHANCE OIL STRAINER

1
　
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