(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

 D.  
Prepare to Remove the Main Oil Filter

 S 044-023-N00
 WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
OIL FILTER PRESSURE RELIEF VALVE 1. MAIN OIL
.
FILTER HOUSING
SEE A
2. ELEMENT
3. SPRING BOTTOM COIL OF SPRING 5. BEND TABS OF KEYWASHER 4. SCREW
13. MAIN OIL STRAINER 5. KEYWASHER 3. SPRING COVER
6. PACKING 
4. SCREW  7. PACKING 
SEE  B 

13. MAIN OIL STRAINER COVER
12. WASHER
8. INSERT
VIEW OF SPRING, SCREW,
9. PACKING
KEYWASHER AND COVER
11. BOLT
INSTALLED
10. PLUG
B
ENGINES WITHOUT PW SB 72-524
A
L-B3667 (0000)
Main Oil Filter Element Installation Figure 401 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
.  OIL FILTER 
PRESSURE 
RELIEF VALVE  1.  MAIN OIL 
FILTER 
HOUSING 

SEE C
5.  BEND TABS OF KEYWASHER 2. ELEMENT
3.
 SPRING

4.
 SCREW

3.
 SPRING

4.
 SCREW

13. MAIN OIL
13. MAIN OIL STRAINER
STRAINER 5. KEYWASHER COVER
COVER 6. PACKING
VIEW OF SPRING, SCREW,
7. PACKING
KEYWASHER AND COVER
SEE D
INSTALLED
D
12. WASHER
8. INSERT
14. NUT
9.
 PACKING

10.
 PLUG

ENGINES WITH PW SB 72-524 AND WITHOUT PW SB 79-79
C
L-B3668 (0000)
Main Oil Filter Element Installation Figure 401 (Sheet 2)
F14363
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
OIL FILTER
PRESSURE
RELIEF VALVE 1.  MAIN OIL FILTER
.
HOUSING
SEE E
2. ELEMENT
16. SPRING RETAINER
15.  SCREW
(2 LOCATIONS)  15. SCREW (2 LOCATIONS)
3. SPRING
16. SPRING RETAINER
18.  MAIN OIL
STRAINER  3. SPRING 
COVER  17. WASHER 
(2 LOCATIONS) 
6. PACKING  7. PACKING 
SEE  F 

18.  MAIN OIL STRAINER
17.  WASHER
COVER (2 LOCATIONS)
8. INSERT
VIEW OF SPRING, SCREWS,  12. WASHER 9. PACKING RETAINER ANDCOVER
14. NUT
INSTALLED
10. PLUG
F ENGINES WITH PW SB 72-524 AND PW SB 79-79 E
L-B3669 (0000)
Main Oil Filter Installation Figure 401 (Sheet 3)
G26207
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