S 864-049

 (14)
 Remove electrical power if it is not necessary (AMM 24-22-00/201).

 TASK 29-18-06-004-022
 4. Reservoir Fill Filter Element Removal (Fig. 401)
_____________________________________
 A. References
 (1)  
AMM 09-11-00/201, Towing and Taxiing

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (4)  
AMM 32-00-30/201, Landing Gear Door Locks

 B.
Access

 (1)  
Location Zone
 137A Body Landing Gear Wheel Well, LH

 C.
Procedure

 S 864-023
 (1)  
Supply electrical power (AMM 24-22-00/201).

 (2)
Put the handle on the selector valve in the SYS 1 position.

 (3)
Release the pressure in hydraulic system 1 (AMM 29-11-00/201).

 S 864-024
 S 864-025
 S 494-053
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  Do this task: Body Landing Gear Door Lock Installation (AMM 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH RESERVOIR FILL FILTER ú

 29-18-06
 ú ú 02 Page 405 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 494-054
 WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (5)  
Install the ground locks in all landing gear (AMM 09-11-00/201).

 S 034-028

 (6)  
Remove the lockwire from the filter bowl.

 S 034-055

 (7)  
Remove the filter bowl from the filter head.

 S 024-029

 (8)
Remove the filter element, the O-ring, and the backup ring.

 S 034-065

 (9)  
Discard the O-ring and the filter element.

 S 034-056

 (10)
 Remove the O-ring and the backup rings from the filter head.

 S 034-057

 (11)
 Discard the O-ring.

 TASK 29-18-06-404-031
 5. Reservoir Fill Filter Element Installation (Fig. 401)
__________________________________________
 A. Consumable Materials
 (1)  
D00153 Fluid - Hydraulic, Fire-Resistant, BMS 3-11

 B.
References

 (1)  
AMM 12-12-01/301, Hydraulic Systems

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 32-00-30/201, Landing Gear Door Locks

 (4)  
AMM 36-00-00/201, Pneumatic System

 C.
Access

 (1)  
Location Zone
 137A Body Landing Gear Wheel Well, LH

 D.
Procedure

 S 644-032
 (1)  
Apply hydraulic fluid to the O-rings, the backup rings, and the threads of the filter bowl.

 (2)  
Install the large O-ring and the backup rings in the filter head.

 S 434-033
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH RESERVOIR FILL FILTER ú

 29-18-06
 ú ú 02 Page 406 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 (3)  S 434-034Install the small O-ring and the backup ring in the groove on the filter element.
 (4)  S 424-035Install the filter element on the fitting in the filter head.
 (5)  S 164-058Clean the filter bowl.
 (6)  S 434-059Install the filter bowl on the filter head.
 (7)  S 434-060Tighten the filter bowl to 50-75 pound-inches (6-9 N.m.).
 (8)  S 434-061Safety the filter bowl with a lockwire.
 (9)  S 864-037Pressurize the pneumatic system (AMM 36-00-00/201).
　
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