(2)  
D00153 Fluid - Hydraulic, Fire Resistant, BMS 3-11

 B.
References

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

 (2)  
AMM 36-00-00/201, Pneumatic System

 (3)  
AMM 51-31-01/201, Seals and Sealing

 (4)  
AMM 54-53-00/201, Strut Drains and Sealant

 (5)  
AMM 78-31-00/201, Thrust Reverser System

 C.
Access

 (1)  
Location Zone 412 Engine 1 - The 2:00 Face of the Engine Nacelle Firewall 422 Engine 2 - The 2:00 Face of the Engine Nacelle Firewall 412 Engine 3 - The 2:00 Face of the Engine Nacelle Firewall 422 Engine 4 - The 2:00 Face of the Engine Nacelle Firewall

 (2)  
Access Panel 416 Engine 1 - Right Half of the Thrust Reverser 426 Engine 2 - Right Half of the Thrust Reverser 436 Engine 3 - Right Half of the Thrust Reverser 446 Engine 4 - Right Half of the Thrust Reverser

 D.
Procedure

 S 644-011
 (1)  
Apply the BMS 5-63 sealant on the mating surface of the mounting flange (AMM 51-31-01/201).

 S 424-012

 (2)  
Install the self-sealing disconnect:

 (a)
Put the self-sealing disconnect on the firewall.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (b)  
Align the bolt holes in the mounting flange with the holes in the firewall.

 (c)  
Attach the self-sealing disconnect with the four mounting bolts.

 S 644-013
 (3)  
Apply the BMS 5-63 sealant on the bolts and on the edges of the valve mounting flange.

 S 434-014

 (4)  
Connect the hydraulic supply hose and tube to the self-sealing disconnect.

 S 614-015

 (5)  
Fill the hydraulic reservoir (AMM 12-12-01/301).

 S 864-016

 (6)  
Pressurize the applicable pneumatic system (AMM 36-00-00/201).

 S 214-017

 (7)  
Examine the self-sealing disconnect and the firewall for leaks.

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

 S 864-018
 (8)  
Release the pressure in the pneumatic system if it is not necessary for other operations (AMM 36-00-00/201).

 S 394-019

 (9)  
Apply BMS 5-63 sealant on the mating surfaces of the cover plate (AMM 51-31-01/201).

 S 414-020
 CAUTION:_______MAKE SURE THE STRUT RACEWAY STRUCTURE IS FULLY SEALED. A BAD SEAL CAN CAUSE FUEL AND HYDRAULIC FLUID TO DRAIN ON HOT ENGINE SURFACES.
 (10)
 Do the leakage check of the forward strut compartment (AMM 54-53-00/201) after the BMS 5-63 sealant bonds permanently.

 (11)
 Close the right half of the thrust reverser (AMM 78-31-00/201).

 S 414-021
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 TURBINE DRIVE SHUTOFF VALVE POSITION SWITCH - REMOVAL/INSTALLATION
__________________________________________________________________
 1.  General_______
 A.  This procedure has two tasks. The first task removes the position switch from the shutoff valve for the turbine drive. The second task installs the position switch. The second task also adjusts the position switch.
 B.  The position switch is on the left side of the shutoff and speed control valve. The shutoff and speed control valve is on the aft side of the torque box in the aft nacelle strut. You must open a door in the left trailing edge fairing to get access to the position switch.
 TASK 29-11-39-004-001
 2.  Shutoff Valve Position Switch Removal (Fig. 401)_____________________________________
 A.  References
　
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