SUPPLY HOSE SELF-SEALING DISCONNECT (HOSE-MOUNTED) - REMOVAL/INSTALLATION
_________________________________________________________________________
 1.  General
_______
 A.  This procedure contains the tasks to remove and to install the supply hose self-sealing disconect (hose mounted). In this procedure, the supply hose self-sealing disconnect (hose mounted) is referred to as the self-sealing disconnect.
 B.  The self-sealing disconnect is attached to the end of the hydraulic supply hose. The self-sealing disconnect attaches the hydraulic supply hose to the engine driven pump (EDP).
 C.  You must drain the hydraulic supply reservoir before you remove the self-sealing disconnect from the hydraulic supply hose. To do this, remove the self-sealing disconnect from the EDP. Install a union in the self-sealing disconnect and drain the hydraulic supply reservoir.
 D.  Open the right half of the thrust reverser to get access to the
 self-sealing disconnect.

 TASK 29-11-31-004-017
 2.  Supply Hose Self-Sealing Disconnect Removal (Fig. 401)
___________________________________________
 A.  Standard Tools and Equipment
 (1)
Container - 15 U.S. gallon (60 liter) capacity

 (2)
MS21902-20 Union

 B.  
References

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

 (2)
AMM 29-11-05/401, Engine Driven Pump

 (3)
AMM 36-00-00/201, Pneumatic System

 (4)
AMM 78-31-00/201, Thrust Reverser System

 C.  
Access

 (1)  
Location Zone 412 Engine 1 - The 5:00 o'clock Face of the Forward Gearbox 422 Engine 2 - The 5:00 o'clock Face of the Forward Gearbox 432 Engine 3 - The 5:00 o'clock Face of the Forward Gearbox 442 Engine 4 - The 5:00 o'clock Face of the Forward Gearbox

 (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

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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

HYDRAULIC SEE A SUPPLY HOSE
HYDRAULIC CASE DRAIN HOSE
HYDRAULIC
PRESSURE
HOSE

HYDRAULIC SUPPLY HOSE SELF-SEALING FWDDISCONNECT ELECTRICAL CONNECTOR
ENGINE-DRIVEN PUMP
A
Supply Hose Self-Sealing Disconnect (Hose Mounted) Installation
Figure 401

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 D. Prepare to remove the self-sealing disconnect.
 S 864-026
 WARNING: DO NOT OPEN THE HYDRAULIC SYSTEM BEFORE YOU RELEASE THE
_______ PRESSURE IN THE PNEUMATIC SYSTEM. THE PNEUMATIC SYSTEM PRESSURIZES THE HYDRAULIC RESERVOIR. PRESSURIZED HYDRAULIC FLUID CAN CAUSE INJURY.
 (1)
Release the pressure in the pneumatic system (AMM 36-00-00/201).

 (a)  
Operate the bleed valve on the pressurization module to release the pressure in the hydraulic reservoir (AMM 29-11-00/201).

 S 014-024
 (2)  
Open the right half of the thrust reverser for the applicable engine (AMM 78-31-00/201).

 S 864-004

 (3)  
Open the applicable EDP HYD SUPPLY circuit breaker:

 (a)  
P7 Overhead Circuit Breaker Panel
 1) 7J4 EDP SUPPLY 1
 2) 7J5 EDP SUPPLY 2
 3) 7J6 EDP SUPPLY 3
 4) 7J7 EDP SUPPLY 4

 E.
Remove the self-sealing disconnect:

 S 684-006
 (1)  Disconnect the hydraulic supply hose from the EDP
 (AMM 29-11-05/401).

 NOTE: The hydraulic supply hose is the largest hose.
____
 S 684-020
 (2)  
Drain the hydraulic reservoir:

 (a)  
Put a container below the EDP.
　
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