S 864-003

 (2)  
After 5 minutes, drain the chemical precharge from the toilet tank and make sure the drain valve handle is fully closed.

 S 864-004

 (3)  
Open this circuit breaker on P414 Power Distribution Panel - Left and attach a DO-NOT-CLOSE tag:

 (a)  414E19 DRAIN VALVE LAV TANK U-21
 S 014-006
 (4)  
Remove the floor panel above the ball valve in the area of station 585 and RBL 5.

 (5)  
Disconnect the electrical connector for the ball valve.

 S 034-007

 (6)  
Remove the fasteners that attach the clevis end of the rod assembly to the ball valve.

 (7)  
Move the valve arm away from the rod assembly.

 S 034-005
 S 034-008
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. FREIGHTERS ú

 38-32-71
 ú ú 01 Page 401 ú Oct 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

LAVATORY (REF)
BALL VALVE AND TOILET SERVICE PANEL
SEE A LOWER LOBEFORWARD CARGO FLOOR BEAMCOMPARTMENT (REF)STA 580
SKIN (REF)
RINSE LINE (REF)
BALL VALVE
SEE B
TOILET SERVICE PANEL
A
Ball Valve Installation Figure 401 (Sheet 1)
C82114
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. FREIGHTERS ú

 38-32-71
 ú ú 01 Page 402 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
ELECTRICAL CONNECTOR

WITNESS

Ball Valve Installation
Figure 401 (Sheet 2)

C82368
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. FREIGHTERS ú

 38-32-71
 ú ú 01 Page 403 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 034-009
 (8)  
Install the fasteners loosely on the clevis.

 S 034-010

 (9)  
On the upper side of the ball valve, remove the clam shell clamp and slide the sleeve away from the ball valve.

 S 034-011

 (10)
 On the lower side of the ball valve, remove the clamp.

 S 864-012

 (11)
 Move the ball valve away from the lower connection.

 S 024-013

 (12)
 Remove the ball valve.

 S 034-014

 (13)
 Remove and discard the gasket from the lower connection.

 TASK 38-32-71-404-015
 3.  Ball Valve Installation (Fig. 401)_______________________
 A. Consumable Materials
 (1)  D00015 - BMS 3-24 Grease, Corrosive Preventive
 B. References
 (1)  
AMM 12-17-61/301, Toilet Tank - Servicing

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

 (3)  
AMM 38-32-60/501, Toilet System - Adjustment/Test

 (4)  
AMM 38-32-72/401, Ball Valve Rod Assembly - R/I

 C. Access
 (1)  Location Zone 126 Area Below Fwd Cargo Container Compartment
 D. Procedure
 S 434-016
 (1)  
Put a new gasket on the lower side of the ball valve.

 S 824-038

 (2)  
Make sure the pin hole in the gasket is engaged with the pin in the lower flange of the ball valve.

 (3)  
Put the ball valve and gasket between the drain tubes.

 S 424-017
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. FREIGHTERS ú

 38-32-71
 ú ú 01 Page 404 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 氣動系統 WATER/WASTE(77)