(c)  
Remove the two bolts and the washers.

 (d)  
Remove the water separator for the shutoff valve.

 (e)  
Remove the packing.
 1) Discard the packing.

 TASK 29-11-15-402-024
 7.  Shutoff Valve Water Separator Installation (For Turbine Drive Units With________________________________________________________________________ In-Line Air Filters) (Fig. 201).____________________
 A.  Consumable Materials
 (1)  
D00071 Oil - Aircraft Turbine Engine Lubricating, MIL-L-7808 (optional to MIL-L-23699)

 (2)  
D00068 Oil - Aircraft Turbine Engine Lubricating, MIL-L-23699 (optional to MIL-L-7808)

 B.  
References

 (1)  
AMM 54-62-00/201, Nacelle Strut Access Panels

 (2)  
IPC 29-11-41 Fig. 1

 C.  
Access

 (1)  
Location Zone
 454 System 1 - Strut Aft Fairing
 484 System 4 - Strut Aft Fairing

 (2)  
Access Panel
 454A Trailing Edge Fairing Doors - System 1
 484A Trailing Edge Fairing Doors - System 4

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 210 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 D. Procedure
 S 422-053
 (1)  
Install the water separator for the shutoff valve:

 (a)  
Install the packing, lubricated with engine oil, on the water separator for the shutoff valve.

 (b)  
Put the water separator housing in its position on the shutoff/ speed control valve.

 (c)  
Install the two washers and the bolts. 1) Tighten the bolts. 2) Install a lockwire on the bolts.

 (d)  
Connect the tee fitting to the water separator housing on the shutoff valve.

 (e)  
Install the shutoff and modulator supply tube between the two tee fittings.

 S 212-095
 (2)  Check Shutoff Valve water separator connections for leaks (AMM 29-11-15/201 - Water Separator and Air Filter Installation Inspection).
 S 412-054
 CAUTION: MAKE SURE YOU LATCH THE FAIRING DOORS ON THE TRAILING EDGE
_______ CORRECTLY. DAMAGE CAN OCCUR IF THE DOORS OPEN DURING A FLIGHT.
 (3)  Close the fairing doors on the trailing edge of the applicable strut (AMM 54-62-00/201).
 TASK 29-11-15-002-031
 8. Shutoff Valve In-line Air Filter Removal (For Turbine Drive Units With
______________________________________________________________________ In-Line Air Filters) (Fig. 201).
____________________
 A. References
 (1)  
AMM 36-00-00/201, Pneumatic System

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

 B.
Access

 (1)  
Location Zone
 454 System 1 - Strut Trailing Edge Fairing
 484 System 4 - Strut Trailing Edge Fairing

 (2)  
Access Panel
 454A Trailing Edge Fairing Doors - System 1
 484A Trailing Edge Fairing Doors - System 4

 C.
Procedure

 S 012-055
 (1)  Open the fairing doors on the trailing edge of the applicable strut (AMM 54-62-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 29-11-15
 ALL  ú ú 01 Page 211 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 862-056
 (2)
Release the pressure in the pneumatic system (AMM 36-00-00/201).

 S 022-058

 (3)  
Remove the in-line air filter for the shutoff valve:

 (a)  
Disconnect the elbow from the solenoid valve assembly.

 CAUTION:_______REMOVE THE TUBE CONNECTION CAREFULLY. THE FILTER CAN FALL OUT OF THE TUBE AND CAUSE DAMAGE TO THE FILTER.

 (b)  
Disconnect the elbow from the supply port tube for the shutoff valve.

 (c)  
Remove the in-line air filter from the supply port tube for the shutoff valve.
　
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