(4) S 824-018Make sure the pin in the ball valve is engaged in the hole in the flange of the lower drain tube.
(5) S 434-019Install the clamp for the lower connection.
(6) S 434-020Tighten the nut for the T-bolt from 45 to 55 inch-pounds.
(7) S 224-021Make sure there is not more than 0.14 inch between the flanges at the upper connection.
(8) S 864-022Move the sleeve to the center of the connection.
(9) S 434-023Install the clamshell clamp.
S 864-024
(10)
Remove the fasteners that were loosely installed on the cleves during the removal procedure.
S 644-025
(11)
Put a thin layer of grease on the surfaces of the bolt and the clevis.
S 434-026
(12)
Put the valve arm in the clevis.
S 434-027
(13)
Install the bolt and 2 washers.
S 864-028
(14)
Move the valve arm to the fully closed position.
S 224-029
(15)
Measure the distance from the end of the drain valve handle to the service panel.
S 824-030
(16)
If the distance is not 2.10 inches, do the steps in AMM 38-32-72/401 that adjust the rod assembly clevis.
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38-32-71
ú ú 01 Page 405 ú Oct 10/93
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A
747-400 MAINTENANCE MANUAL
S 434-031
(17)
Connect the electrical connector to the ball valve.
S 864-032
(18)
Remove the DO-NOT-CLOSE tag and close this circuit breaker on P414 Power Distribution Panel - Left.
(a) 414E19 DRAIN VALVE LAV TANKS U-21
S 864-034
(19)
Supply electrical power (AMM 24-22-00/201).
S 714-035
(20)
Make sure the drain valve indicator light at the service panel is off.
S 794-036
(21)
Do the steps in AMM 38-32-60/501 that make sure there is no leakage from the ball valve.
(22)
Install the floor panel that covers the ball valve.
S 414-037
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. FREIGHTERS ú
38-32-71
ú ú 01 Page 406 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
BALL VALVE ROD ASSEMBLY - REMOVAL/INSTALLATION
______________________________________________
1. General_______
A. This procedure has two tasks. The first task removes the ball valve rod assembly. The second task installs the ball valve rod assembly.
B. The ball valve rod assembly is referred to as the rod assembly in the steps of these two tasks.
C. Make sure that you read and obey the specified instructions in the Standard Procedures for work with the Toilet Waste and Equipment (AMM 38-32-60/201).
TASK 38-32-72-004-001
2. Ball Valve Rod Assembly Removal (Fig. 401)_______________________________
A. Access
(1) Location Zone 126 Area Below Fwd Cargo Container Compartment
B. Procedure
S 864-002
(1) 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 014-003
(2)
Remove the floor panel above the toilet service panel in the area of station 585 and RBL 5.
S 974-004
(3)
Measure and record the distance "A" between the top of the jam nut and the top of the rod.
NOTE: This dimension will be used in the installation procedure.
____
S 434-005
(4)
Disconnect the clevis from the valve arm.
(5)
Install the fasteners loosely on the valve arm.
(6)
Remove the lockwire, clevis and jamnut from the rod assembly.
(7)
Pull the rod assembly out of the toilet service panel.
S 864-006
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本文链接地址：747-400 AMM 飞机维护手册 气动系统 WATER/WASTE(78)
