CAUTION: USE ONLY AMOUNT OF TAPE NECESSARY TO HOLD TUBE AND HEATER ASSEMBLY IN PLACE. IF TOO MUCH TAPE IS USED TAPE MAY BE DAMAGED. IF TOO LITTLE TAPE IS USED AND AN ATTEMPT IS MADE TO TIGHTEN SCREWS TO HOLD TUBE AND HEATER FIRMLY MAST HALVES MAY BE DAMAGED.
(b)
Apply BMS 5-95 sealant to faying surface and position drain mast halves (Fig. 401) (Ref Chapter 51, Seals and Sealing).
(c)
Install and tighten connecting screws.
(d)
Fill connecting screw holes, and cover gap between heater and drain mast, with BMS 5-79 sealant (Fig. 401).
B. Install Drain Mast
(1)
Position drain mast on outside of airplane.
(2)
On aft drain mast, apply BMS 5-95 sealant to faying surface (Ref Chapter 51, Sealing).
(3)
Clean bonding jumper terminal and mating surface.
(4)
Install bonding jumper.
(5)
Install and tighten fasteners.
(6)
On forward drain mast, fillet seal with BMS 5-95 sealant (Fig. 401).
(7)
On aft drain mast, apply BMS 5-79 sealant (Fig. 401).
(8)
Connect fitting to drain tube.
(9)
Connect electrical wire.
(10)
Close circuit breakers.
(11)
Check for leaks.
(a)
Plug drain mast.
(b)
Let an appropriate amount of water run from sink of an adjacent lavatory.
(c)
Check for leaks at drain mast tube connection.
(d)
Unplug drain mast.
(12)
Check for heating of drain mast (Ref Chapter 30, Waste Water Drain Mast Heater - A/T).
507
Feb 20/85 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 38-31-21 Page 403
TOILET SYSTEM -DESCRIPTION AND OPERATION
1. General
A. Separate independent toilet systems are provided in the forward and aft passenger cabin (Fig. 1). The toilet in each lavatory compartment is an electrically powered flushing unit which collects the waste material in a waste tank and combines it with the flushing agent by chemical and mechanical treatment. The unit is primed initially with no more than 3.0 gallons of a concentrated solution of disinfectant, deodorant and dye.
B. The waste tank assemblies are fitted with either fixed or rotating filters for filtering recirculated flushing fluid to the toilet bowl. Significant differences are discussed or illustrated as they occur in the description of the toilet system components.
F91009
5C8 Toilet Compartment Equipment Location
Jun 20/85 Figure 1 38-32-0
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C. The toilet unit is installed in each lavatory compartment entirely above the lavatory compartment floor. Each unit consists of a toilet shroud assembly, flushing components and a waste tank (Fig. 2).
D. Servicing components in the toilet systems allow ground draining and cleansing of the toilet units.
Toilet System 5C8
38-32-0 Figure 2 (Sheet 1) Feb 20/85
Page 2
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
F91692 F92270
565 Toilet System
Jun 20/84 Figure 2 (Sheet 2) 38-32-0
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Toilet System 5C8
38-32-0 Figure 2 (Sheet 3) Feb 20/85
Page 4
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
E. Toilet flushing action is initiated by turning the toilet flush handle. This begins a cycle in which flushing liquid is drawn into the filter and pumped through the toilet bowl flush ring into the bowl with a swirling action. Waste material and flushing liquid flow out the bottom of the bowl into the waste tank.
F. A separator between the tank and the bowl prevents splash and vision of tank contents.
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