(2)  
C00259 Primer - BMS 10-11, Type I, Class A

 B.
References

 (1)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (2)  
AMM 54-62-00/201, Nacelle Strut Access Panels

 (3)  
IPC 29-11-29 Fig. 1, 5, and 51

 C.
Access

 (1)  
Location Zone
 454 System 1 - Strut Aft Fairing
 735 System 2 - Wing Landing Gear Wheel Well
 745 System 3 - Wing Landing Gear Wheel Well
 484 System 4 - Strut Aft Fairing

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 29-11-29
 ALL  ú ú 03 Page 208 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  
Access Panel
 454AL Strut Aft Fairing Doors - System 1
 484AL Strut Aft Fairing Doors - System 4

 D.
Procedure

 S 422-086
 (1)  
Install the pressure differential indicator:

 (a)  
Lubricate the new packings, the backup rings, and the indicator threads with hydraulic fluid.

 (b)  
Install the packings and the backup rings on the indicator.

 (c)  
Install the pressure differential indicator in the return module.

 (d)  
Apply the primer on the four mounting screws.

 (e)  
Install the four mounting screws while the primer is wet. 1) Tighten the screws. 2) Install the lockwires on the screws.

 S 862-047
 (2)  
Pressurize the hydraulic system (AMM 29-11-00/201).

 S 792-048

 (3)  
Examine the return module for leakage.

 (a)  
If you find leakage, repair the cause of it.

 S 862-049
 (4)  Release the pressure in the hydraulic system if it is not necessary for other operations (AMM 29-11-00/201).
 S 412-051
 CAUTION: MAKE SURE YOU LATCH THE FAIRING DOORS ON THE TRAILING EDGE
_______ CORRECTLY. DAMAGE CAN OCCUR IF THE DOORS OPEN DURING A FLIGHT.
 (5)  On systems 1 and 4, close the fairing doors on the trailing edge of the strut (AMM 54-62-00/201).
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 29-11-29
 ALL  ú ú 03 Page 209 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 TASK 29-11-29-002-052
 8.  Ground Service Disconnect Removal (Fig. 201)_________________________________
 A. References
 (1)  
AMM 09-11-00/201, Towing and Taxiing

 (2)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (3)  
AMM 54-62-00/201, Nacelle Strut Access Panels

 (4)  
IPC 29-11-29 Fig. 1, 5, and 51

 B.
Access

 (1)  
Location Zone
 454 System 1 - Strut Aft Fairing
 735 System 2 - Wing Landing Gear Wheel Well
 745 System 3 - Wing Landing Gear Wheel Well
 484 System 4 - Strut Aft Fairing

 (2)  
Access Panel
 454AL Strut Aft Fairing Doors - System 1
 484AL Strut Aft Fairing Doors - System 4

 C.
Procedure

 S 012-053
 (1)  
On hydraulic systems 1 and 4, open the fairing doors on the trailing edge of the strut (AMM 54-62-00/201).

 S 492-054

 (2)  
On hydraulic systems 2 and 3, make sure the ground lockpins for the body gear are installed (AMM 09-11-00/201).

 S 862-055
 WARNING: MAKE SURE YOU RELEASE THE HYDRAULIC SYSTEM PRESSURE BEFORE YOU
_______ OPEN THE HYDRAULIC SYSTEM. HYDRAULIC FLUID THAT HAS PRESSURE CAN CAUSE INJURY TO PERSONS.
 (3)  Release the pressure in the hydraulic system (AMM 29-11-00/201).
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