S 864-024
(10)
Make sure the elbow is in line at the clamshell coupling.
S 434-025
(11)
Install the clamshell couplings at the top and bottom of the tank.
(a)
Make sure the ends that connect are not more than 0.28 inch apart.
(b)
Move the sleeve to the center of the coupling.
(c)
Install the clamp.
S 434-026
(12)
Connect the electrical connector for the immersion heater.
S 434-030
(13)
Connect the electrical connector for the thermostat.
S 434-027
(14)
If applicable, connect the wire from the water quantity transmitter.
F. Water Tank Installation Test
S 844-028
(1)
Do this task: "Water System Servicing (Fill)" (AMM 12-14-61/301).
S 864-029
(2)
Do this task: "Water System Pressurization" (AMM 38-15-60/201).
(3)
Do a check of the water tank connections for leaks.
S 214-031
(4)
Do a check of the lockwire on the water tank retaining ring
(Fig 401) as follows:
S 794-030
(a) Make sure the lockwire is attached between the lug on the water tank and the retaining ring.
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(b)
Make sure the lockwire is on the square side and not on the tapered side of the water tank lug.
(c)
If the lockwire is not installed correctly, remove the lockwire and the install new lockwire.
G. Put the Airplane Back to its Usual Condition
S 414-031
(1)
Do the "Containerized Cargo Compartment Ceiling and Sidewall Linings Installation" task (AMM 25-52-01/401) to install the sidewall and ceiling panels.
S 864-032
(2)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
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747-400 MAINTENANCE MANUAL
LAVATORY WATER SHUTOFF VALVE - REMOVAL/INSTALLATION
___________________________________________________
1. General_______
A. This procedure gives the instructions for two tasks. The first task is the removal of the water shutoff valve for the lavatory. The second task is the installation of the water shutoff valve for the lavatory.
B. The water shutoff valve for the lavatory will be referred to as the shutoff valve in this procedure.
C. The shutoff valve is installed in the lavatory sink cabinet below the module in the tubing below the lavatory basin.
TASK 38-11-65-004-001
2. Lavatory Water Shutoff Valve Removal (Fig. 401)____________________________________
A. General
(1) The water shutoff valve for the lavatory will be referred to as the shutoff valve in this procedure.
B. References
(1)
AMM 12-14-61/301, Water System
(2)
AMM 38-15-60/201, Water System Pressurization
C. Access
(1) Location Zone
224 Upper Deck Crew Rest Body Sta 385 to 632, Right
D. Procedure
S 844-002
(1)
Do this task:" Water System Servicing (Drain)" (AMM 12-14-61/301) to drain 2 to 3 gallons of water but ignore the step that closes the the service panel door.
S 844-003
(2)
Do this task: "Water System Depressurization" (AMM 38-15-60/201).
S 014-004
(3)
Remove the access panel for the sink cabinet.
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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(14)
