of the forward overhead panel.
(b)
If the No. 2 engine is on, to close the bleed air isolation valve, do the step that follows: 1) Move the ISOLATION VALVE toggle switch to CLOSE on the
P5-10 module of the overhead panel.
(c)
Make sure the APU is off (Ref 49-11-00/201).
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A 737-300/400/500MAINTENANCE MANUAL
(d) Disconnect the ground pneumatic cart from the pneumatic manifold connector.
(e) Turn the left and right air conditioning pack valve switches on the forward overhead panel to ON, then turn the switches to OFF.
(f) (g) Disconnect the air pressure source from the air valve at the water service panel.Open the fill and overflow valve, then close the valve.
S 864-008
(3) Drain and flush the toilet waste tank from the exterior service panel (Ref 12-17-00/301).
S 034-009
(4) Remove the attendant's seat from the lavatory if it is necessary (Ref 25-25-12/201).
S 034-010
(5) Remove the music tape reproducer from the lavatory if it is necessary.
S 034-012
(6) Remove the lavatory door with the hinge. (a) Remove the screws that attach the service unit to the lavatory ceiling. (b) Lift the service unit to get access to the area above the lavatory. (c) Open the hinged access panel in the lowered ceiling panel adjacent to lavatory "A" and "D". 1) Hold the access panel, and put a small allen wrench or other similar tool in the access holes, to release the latch.
2) Lower the access panel until it is held by the lanyard anchor.
3) Release the lanyard anchor and let the access panel move down.
(d) Move the lowered ceiling panel adjacent to "A" and "B" lavatories back to permit the removal of the lavatories. 1) Disconnect the attached wires and hoses from the adjacent lowered ceiling panel (Ref 25-21-71/401). 2) Remove the fasteners that hold the lowered ceiling panel in its position and remove the trim piece that connects the lavatory to the ceiling panel (Ref 25-21-71/401).
S 034-014
(7) Disconnect the electrical connection.
S 034-015
(8) Remove the pin from the bracket, and move the rod away from the bracket.
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S 034-016
(9)
Attach the rod to the overhead structure with tape.
S 034-017
(10)
Remove the gasper air hose (forward lavatory).
S 024-018
(11)
Remove the floor attach bolts (Fig. 401).
(a)
Pull the carpet strip off the kickstrip.
(b)
Remove the kickstrip fasteners, the kickstrip, and the access plates for the floor attach bolts.
(c)
Remove the floor attach bolts (Fig. 401).
S 034-020
(12) Remove the toilet shroud and the waste tank (Ref 38-32-51/401).
(a)
Disconnect the toilet flushline, the sink drain, the potable water lines, the cables, and the bonding jumper.
(b)
Remove the tank.
(c)
Loosen the drain fitting from the floor of the lavatory and pull out the fitting.
S 034-021
(13) Disconnect the outside water lines from the top and the bottom of the lavatory.
TASK 25-40-01-404-024
3. Lavatory - Installation (Fig. 401)_______________________
A. References
(1) 38-32-51/401, Toilet Waste Tank
B. Access
(1) Location Zone
100 Upper Half of Fuselage
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本文链接地址：737-300 400 500 AMM 飞机维护手册 EQUIPMENT/FURNISHINGS(100)
