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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
 S 034-006
 (5)  
On tanks with an electrical wire that connects to the tank, remove the wire.

 S 034-007

 (6)  
Disconnect the electrical connectors for the water tank immersion heater and the thermostat.

 S 034-008

 (7)  
Remove the clamshell coupling that connects the pressurization manifold to the water tank.

 S 034-009

 (8)  
Remove the clamshell coupling that connects the water line to the water tank.

 S 034-024

 (9)  
At each clamshell coupling that you removed, move the sleeves away from the water tank.

 S 034-028

 (10)
 Disconnect the elbow from the bottom of the water tank.

 S 034-026

 (11)
 At each of the attach points, remove the nut, washers, bushing (if applicable) and bolt that hold the tank to the tank support.

 NOTE: Keep the parts that you removed adjacent to the attach points
____ where they will be installed again.
 S 034-027
 (12)
 Remove the tank.

 S 864-025

 (13)
 Put a cap on each of the open water and pressurization lines.

 TASK 38-11-64-384-010
 3. Water Tank Installation (Fig. 401)
_______________________
 A. References
 (1)  
AMM 12-14-61/301, Water System

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

 (3)  
AMM 38-15-60/201, Water System Pressurization

 B. Consumable Materials
 (1)  
D00463 Lubricant - White Protopet 1S (Witco Corp, New York, NY 07804)

 (2)  
A00260 Sealant - BMS 5-95 Class B

 (3)  
D00015 Grease - BMS 3-24, Corrosion Preventive

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. FREIGHTERS ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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

 C. Access
 (1)  Location Zone 124 Forward Cargo Container Compartment Aft Half, Right
 D. Prepare to Install the Water Tank
 S 864-011
 (1)  
At the clamshell connections, remove the old O-rings.

 S 144-033

 (2)  
Make sure that all parts of the connection are clean.

 S 644-012

 (3)  
Apply a thin layer of white protopet 1S lubricant on the surfaces of the new O-rings.

 S 644-013

 (4)  
Apply a thin layer of white protopet 1S lubricant to the inner surfaces of the sleeve.

 S 864-014

 (5)  
Remove the caps from the water and pressurization lines.

 E. Water Tank Installation
 S 424-015
 (1)  
Put the tank between the supports.

 S 864-016

 (2)  
Move the tank until the lowest aft attach point is in line.

 S 624-017

 (3)  
Apply grease and sealant to the applicable parts for the lowest aft attach point.

 S 434-018

 (4)  
Loosely install the parts for the lowest aft attach point.

 S 624-019

 (5)  
Apply grease and sealant to the applicable parts for the other attach points.

 (6)  
Install the parts for the other attach points.

 (7)  
Tighten the bolts to not more than 20 pound-inches.

 S 144-022

 (8)  
Use a clean rag to wipe the grease from the exterior surfaces of the attach point parts.

 S 434-020
 S 864-021
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. FREIGHTERS ú

 38-11-64
 ú ú 01 Page 406 ú Feb 10/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 434-023
 (9)  
Connect the elbow to the bottom of the water tank.
　
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