D. Remove water line.
(1)
Drain water from potable water system (Ref Chapter 38-11-0 SRV).
(2)
Remove tape from elbow of water line shroud immediately above partition and remove elbow halves.
(3)
Disconnect water hose fitting.
(4)
Gain access around water tank located aft of aft baggage compartment and remove tape from large radius elbow on water line shroud.
(5)
Slide sleeve on to straight section of shroud and remove elbow halves.
(6)
Pull water line down through partition and floor opening.
E. Remove water line shroud and cover.
(1)
Remove fasteners securing shroud cover in corner of lavatory partition.
(2)
If required remove fastener securing shroud clamp to foot panel.
(3)
Push shroud downward until shroud is clear of slot in partition, then rotate and withdraw from floor.
F. Remove panel.
(1)
Reach above soffit (curved ceiling) and remove fasteners securing clip angles to sidewall panel at aft corner and at upper corner of soffit. Leave soffit in place.
(2)
Remove bolts through angle and panel at bottom of sidewall panel.
(3)
Remove two screws from angle on floor at front edge of panel.
(4)
Remove two fasteners from upper attach fitting of sidewall panel. Package spacers to prevent loss of parts.
(5)
Pull sidewall panel forward slightly to free from channels on pressure bulkhead then move bottom to the right until top is lowered enough to clear ceiling support channel.
5. Install Sidewall Panel (Fig. 401)
A. Install panel.
(1)
On airplanes with toilet tank tiedown rod brackets on panel, position tiedown rods on sidewall panel to align with fittings on tank top.
(2)
Position sidewall panel with bottom of panel far enough to the right to allow top to pass under ceiling support channel, move to upright position and push into channels on pressure bulkhead.
(3)
Temporarily attach upper attach fitting of panel for alignment.
(4)
Install two screws in angle on floor at front edge of panel.
(5)
Install bolts through angle and panel at bottom of sidewall panel.
(6)
Reach above soffit and install fasteners securing clip angles to sidewall panel at aft corner and at upper corner of soffit.
(7)
Secure upper attach fitting of panel, ensure spacers are in slots.
(8)
If necessary reinstall water dam and sealant (Ref 51-31-0)
(a)
Temporarily install silicone rubber water dam at aft end of buttline 0 partition as shown (inboard wall of aft left lavatory). Check dam for fit. Trim lower aft side as necessary for tight fit with pressure bulkhead structure.
(b)
Remove dam, coat forward, bottom and aft surfaces of dam with sealant, RTV174, Type 60 (Ref 20-30-11).
(c)
Coat both sides of dam liberally with sealant, BMS 5-32.
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Feb 20/86 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 25-40-8 Page 407
B. Install water line shroud and cover (View 1).
(1)
Push shroud downward through hole in floor until upper end can be rotated into slot in partition, then move up to proper position.
(2)
If required install fastener securing shroud clamp to foot panel.
(3)
Install fasteners securing shroud cover in corner of lavatory partition.
C. Install water line.
(1)
Pull hose up through tube in partition with suitable line.
(2)
Connect water hose fitting above partition.
(3)
Pressurize water system (Ref Chapter 38-11-0, SRV).
(4)
Ensure that air has been removed from line and check for leaks at fitting.
(5)
Install shroud elbow with tape. Two wraps of 3-inch wide tape at joints, followed by two wraps of 1-inch wide on ends of elbow.
(6)
Gain access around water tank located aft of aft baggage compartment and install large radius elbow in floor fitting. Secure with sleeve at joint with shroud leading to water tank.
(7)
Install two wraps of 3-inch wide tape to each end of sleeve, followed by two wraps of 1-inch wide tape over tape joints.
D. Install aft wall panel.
(1)
Push panel into spring clips at upper edge.
(2)
Install fasteners at each edge of panel.
(3)
Snap trim covers in place.
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