(2)
The installation of the forward lavatory.
TASK 25-41-01-004-001
2. Remove Forward Lavatory (Fig. 401)_______________________
A. General
(1) The forward galley, located directely across from the forward lava-tory will have to be disassembled to make clearance for the removal of the forward lavatory.
B. References
(1)
AMM 25-41-02/401, Lavatory Door
(2)
AMM 38-10-00/201, Potable Water System
(3)
AMM 38-32-01/401, Toilet Tank
(4)
AMM 52-11-02/401, Passenger Door Lining
C. Access
(1) Location Zones
(a) 221 Passenger Cabin - Section 41 (Left)
D. Prepare for Removal
S 864-003
(1) Open this circuit breaker on the overhead circuit breaker panel, P11, and attach DO-NOT-CLOSE tag:
(a) 11S8, LAV FLUSH MOTOR A
S 864-004
(2) Open these circuit breakers on the APU external power panel, P34, and attach DO-NOT-CLOSE tags:
(a)
34B6, LIGHT LAV SERVICE
(b)
34D1, LAV LIGHTS OCCUPY DOME
S 864-005
(3) Open this circuit breaker on the right miscellaneous electrical equipment panel, P37, and attach DO-NOT-CLOSE tag:
(a) 37G3, LIGHTS LAV
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MAINTENANCE MANUAL
GASPER
PERMACELAIR HOSE
TAPE
0VERHEAD TIE
WATER SUPPLY LINE
STANCHION
PULLEY
COVER
ELECTRICAL AFT
CONNECTOR WALL
WATER TOILET
DRAIN LINES SHROUD
SEE A
TOILET
TANK
SEE B
B
A FLOOR MOUNT AND SHIM
A
(TYPICAL) B
SEE C
KICK STRIP AISLE WALL
STANCHION
LAVATORY
TRIM STRIP
SEALANT
AISLE WALL
TRIM
STRIP FLOOR PANEL
A-A B-B
Forward Lavatory Installation
Figure 401 (Sheet 1)
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MAINTENANCE MANUAL
CLOSED) DRAIN VALVE (NORMALLY HOSE CLAMP TOILET TANK
C C
A MOUNT FLOOR DRAIN ADAPTER B CLAMP DRAIN LINE
BOTTOM OF FLOOR MOUNT AND SHIM TOP OF BUSHING IN FLOOR SHIM 0.01 INCH MAX
WASTE DRAIN ADAPTER C FLIGHT COMPARTMENT PARTITION
LAVATORY FLOOR (8 PLACES) SCREW
SCREW FWD
C-C FORWARD WALL ATTACHMENT INBD
Forward Lavatory Installation Figure 401 (Sheet 2)
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757 MAINTENANCE MANUAL
S 864-007
(4) Open this circuit breaker on the miscellaneous electrical equipment panel, P70, and attach DO-NOT-CLOSE tag:
(a) 70A1, LAV WTR HTR A
S 024-110
(5)
Remove the doorway lining which is forward of the left No. 1 passenger door (AMM 52-11-02/401).
S 014-013
(6)
Remove the ceiling panels to get access to the lavatory.
S 864-067
(7)
Open the fill/overflow valve on the potable water service panel to decrease the pressure of the water system (AMM 38-10-00/201).
S 014-015
(8)
Open the drain valve under the sink to drain the water lines and heater.
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