C. References
(1)
AMM 12-33-01/301, Cold Weather Maintenance
(2)
AMM 24-22-00/201, Electrical Power - Control
D. Access
(1)
Location Zone
100 Lower Half of Fuselage
(2)
Access Panels
119AL Forward Toilet Service Panel
121AL Forward Toilet Service Panel
149GL Mid Toilet Service Panel
E. Procedure
S 863-003
(1)
Supply external electrical power or APU generator electrical power (AMM 24-22-00/201).
S 863-004
(2)
Make sure this circuit breaker on the APU external power panel, P34, is closed:
(a) 34A3(A), FILL CONT LAV
S 863-007
(3)
Make sure this circuit breaker on the right miscellaneous electrical equipment panel, P37, is closed:
(a) 37D8, LAV FILL VALVE
(4)
Open the door for the toilet service panel.
S 863-010
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MAINTENANCE MANUAL
S 013-011
CAUTION:_______ DO NOT LET TOILET FLUIDS GET ON THE AIRPLANE. STAINS ON THE
SKIN OF THE AIRPLANE ARE AN INDICATION OF A LEAK WHEN THE
AIRPLANE IS IN FLIGHT OR OF UNSATISFACTORY SERVICING
PROCEDURES. TOILET FLUIDS CAN CAUSE CORROSION ON THE AIRPLANE
STRUCTURE.
(5) Open the cap on the waste-tank drain connection.
NOTE: Fluid in the drain line is an indication that the drain valve
____ may have a leak.
S 493-012
(6) Do these steps to connect the toilet service cart:
(a)
Connect the flush line to the rinse/fill connection.
(b)
Connect the drain hose of the toilet service cart to the waste-tank drain connection.
(c)
If the drain hose for the toilet service cart has a Y-fitting, pull the T-handle fully out.
NOTE: This gives clearance for the flapper valve in the
____ waste-tank drain connection.
(d) Open the flapper valve in the waste-tank drain connection.
NOTE: To do this turn the OPEN lever 1/4 turn in the direction
____ of the OPEN arrow.
S 683-027
(7) Pull the T-handle on the service panel in the down direction and turn it to lock the drain valve open.
NOTE: For the best results, drain the toilet tanks one at a time.
____ If a drain line is blocked, you can pressurize the airplane cabin to 4 psi (maximum) to make the drain line clear.
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MAINTENANCE MANUAL
S 683-069
(8) Make sure you hear or feel flow in the drain hose.
(a) If you do not get flow in the drain hose or not load on the control cable for the toilet tank drain valve, do these steps: 1) Remove the shroud on the toilet. 2) Do a check to make sure the control cable is serviceable. 3) If the control cable is not serviceable, disconnect the
control cable at the quick disconnect and then use the handle assembly to manually open the toilet tank drain valve.
4) If the control cable is not serviceable, replace the control cable (AMM 38-32-10/401). 5) Put the toilet shroud back in its usual position.
S 613-029
(9) When the toilet tank has drained, push the T-handle on the service panel in the up direction to close the drain valve.
NOTE: Turn the T-handle to the not locked position before you move
____
it to the closed position.
S 173-030
(10)
Pump a minimum of 6 gallons of water through the rinse/fill connection to flush the toilet tank. As you pump the water, pull and release the T-handle on the service panel 3 to 10 times to clean the drain valve.
S 173-031 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 SERVICING 1(87)
