W DOC AIRBUS | AMM A320F

Removal of the Flush Valve

TASK 38-31-57-000-001-A
Removal of the Flush Valve

WARNING: DO NOT DO WORK ON THE TOILET WASTE SYSTEM AND THE POTABLE WATER SYSTEM AT THE SAME TIME. THIS WILL PREVENT CONTAMINATION OF THE POTABLE WATER SYSTEM. SUCH CONTAMINATION CAN BE DANGEROUS TO HEALTH.
WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:
  • ON THE TOILET WASTE SYSTEM, OR
  • ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE SYSTEM.
WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (TOILET WASTE IS DANGEROUS FOR HEALTH).
WARNING: WHEN YOU REMOVE A COMPONENT OF THE TOILET WASTE SYSTEM, ALWAYS DISINFECT THE PART BEFORE YOU PUT IT IN A PLASTIC BAG, THEN SEAL THE BAG. DO NOT PUT DOCUMENTS INTO THE PLASTIC BAG. SEAL THE BAG FIRST,THEN ATTACH THE DOCUMENTS TO IT. THIS WILL PREVENT INFECTION OR ILLNESS. CONTAMINATION FROM THE WASTE CAN BE DANGEROUS TO HEALTH.
NOTE: The removal of the flush valve in the lavatories is the same.
ZONE: 200
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
CAP - BLANKING
No specific
AR
PLUG - BLANKING
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
200
UPPER HALF FUSELAGE
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 24-42-00-861-001-A
Energize the Ground Service Network from the External Power
TASK 25-45-22-000-001-A
Removal of the Toilet Shroud and the Seat
TASK 25-45-22-000-802-A
Removal of the Toilet Shroud of the Space Flex Lavatory
TASK 38-10-00-614-002-A
Depressurization of the Potable Water System
TASK 38-30-00-510-001-A
Decontamination of Components of the Waste/Water and Toilet System for Shipping and/or Installation
TASK 38-31-00-790-002-A
Leak Test of the Vacuum Toilet System (VTS)
TASK 38-31-00-790-003-A
Leak Test of the Vacuum Toilet System
TASK 38-31-55-000-001-A
Removal of the Water Valve
F Flush Valve Assembly ** ON A/C NOT FOR ALL
F Flush Valve Assembly ** ON A/C NOT FOR ALL
F Flush Valve Assembly ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 38-31-57-861-050-A
A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
Subtask 38-31-57-790-050-A
B. Do the leak test of the vacuum toilet system and record the results of the test (Ref. AMM TASK 38-31-00-790-002) (Ref. AMM TASK 38-31-00-790-003).
Subtask 38-31-57-865-059-A
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-VACUUM-SYS35MGA06
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-VACUUM-GEN33MGA08
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-E34MGA04
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-D39MGA03
** ON A/C ALL
2001VUVACU TOIL SYS-LAV PWR-A32MGA01
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-VACU-SYS35MGA06
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-VACU-GEN33MGA08
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-G34MGA04
2001VUVACU TOIL SYS-LAV PWR-F39MGA03
2001VUVACU TOIL SYS-LAV PWR-D45MGA02
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-L45MGA02
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-L23MGA05
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-M34MGA04
Subtask 38-31-57-010-051-A
D. Get Access
   (1) Make sure that you do the depressurization of the potable water system (Ref. AMM TASK 38-10-00-614-002).
   (2) Open the lavatory door.
   (3) Open the sanitary cabinet door.
   (4) Close the potable-water shutoff valve.
   (5) Put a WARNING NOTICE(S) in position to tell persons not to open the potable-water shutoff valve.
   (6) Remove the toilet shroud (Ref. AMM TASK 25-45-22-000-001) (Ref. AMM TASK 25-45-22-000-802).
4. Procedure
Subtask 38-31-57-020-051-D ** ON A/C NOT FOR ALL
A. Removal of the Flush Valve Assembly
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
   (1) If necessary, remove the water valve (Ref. AMM TASK 38-31-55-000-001).
   (2) Disconnect the electrical connectors:
CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
     (a) Disconnect the electrical connectors (18) and (19).
CAUTION: TO PREVENT POSSIBLE CROSS-CONNECTION OF THE ELECTRICAL CONNECTORS, MAKE SURE THAT PLUGS AND RECEPTACLES ARE CLEARLY IDENTIFIED.
     (b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
   (3) Disconnect the outlet elbow (5) from the waste water line (1):
     (a) Unlock and remove the clamp (4).
     (b) Move the sleeve (3) to one side.
     (c) Remove and discard the packings (2).
     (d) Put the PLUG-BLANKING in each disconnected line end.
   (4) Remove the outlet elbow (5) from the flush valve assembly (13):
     (a) Remove the nuts (6), the washers (7) and the bolts (12).
     (b) Remove the outlet elbow (5) with the swivel plate (21).
     (c) Remove and discard the packing (8).
     (d) Put the PLUG-BLANKING in each disconnected line end.
   (5) Remove the flush valve assembly (13) from the bowl elbow (15):
     (a) Remove the nut (10) and the washer (9) from the housing support bracket (11).
     (b) Disconnect the vent tube (20).
     (c) Remove the nuts (16) and the washers (17).
     (d) Remove the flush valve assembly (13) from the bowl elbow (15).
     (e) Remove and discard the packing (14).
     (f) Put the PLUG-BLANKING in each disconnected line end.
   (6) If you use removed parts again, clean and disinfect them (Ref. AMM TASK 38-30-00-510-001).
Subtask 38-31-57-020-051-E ** ON A/C NOT FOR ALL
A. Removal of the Flush Valve Assembly
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
   (1) If necessary, remove the water valve (Ref. AMM TASK 38-31-55-000-001).
CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
   (2) Disconnect the electrical connector (1).
NOTE: It is necessary to make match marks on the electrical connectors before you remove them.
   (3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
   (4) Cut and discard the cable-tie (26) from the vent tube (27).
   (5) Remove the clamp (18).
   (6) Move the sleeve (19) back on the pipe (20).
   (7) Remove and discard the packings (17).
   (8) Put the PLUG-BLANKING in each disconnected line end.
   (9) Removal of the outlet elbow (21) or (28):
     (a) Remove the nuts (22) and the washers (23).
     (b) Remove the nuts (15), the washers (14) and the bolts (11).
     (c) Remove the swivel plate (16).
     (d) Remove the outlet elbow (21) or (28).
     (e) Remove and discard the packing (24).
     (f) Put the PLUG-BLANKING in each disconnected line end.
   (10) Removal of the vertical support (7):
     (a) Remove the nuts (6) and the washers (10).
     (b) Remove the nuts (9), washers (8), bolts (12) and the bracket (13).
     (c) Remove the vertical support (7).
   (11) Disengage the flush valve assembly (25) from the inlet elbow (2):
     (a) Remove the nuts (3) and the washers (4).
     (b) Disengage the flush valve assembly (25) from the inlet elbow (2).
     (c) Remove and discard the packing (5).
     (d) Put the PLUG-BLANKING in each disconnected line end.
   (12) Remove the flush valve assembly (25).
   (13) If you use removed parts again, clean and disinfect them (Ref. AMM TASK 38-30-00-510-001).
Subtask 38-31-57-020-051-F ** ON A/C NOT FOR ALL
A. Removal of the Flush Valve Assembly
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
   (1) Disconnect the electrical connectors as follows:
CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
     (a) Disconnect the electrical connectors (1) and (5).
     (b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
   (2) If necessary, remove the water valve (Ref. AMM TASK 38-31-55-000-001).
   (3) Disconnect the outlet elbow (16) from the waste water system as follows:
     (a) Unlock and remove the clamp (9).
     (b) Move the sleeve (8) away from the clamp (9).
     (c) Remove the packings (7) and discard them.
     (d) Put the PLUG-BLANKING in each disconnected line end.
   (4) Remove the outlet elbow (16) from the flush valve assembly (6) as follows:
     (a) Remove the nuts (15) and the washers (14).
     (b) Remove the outlet elbow (16) and the swivel plate (17) at the same time.
     (c) Remove the packing (18) and discard it.
     (d) Put the PLUG-BLANKING in each disconnected line end.
   (5) Disconnect the inlet elbow (10) from the toilet bowl (11) as follows:
     (a) Push the locking pins (13) into the cam levers (12).
     (b) Pull the cam levers (12) out of the toilet bowl (11).
     (c) Disconnect the inlet elbow (10).
     (d) Put the PLUG-BLANKING in each disconnected line end.
   (6) Remove the quick-release fasteners (3) from the flush valve assembly (6).
   (7) Remove the flush valve assembly (6) and the inlet elbow (10) from the toilet assembly at the same time.
   (8) If you use the removed parts again, clean them with disinfectant (Ref. AMM TASK 38-30-00-510-001).
[Rev.10 from 2021] 2026.04.01 01:20:35 UTC
"Aviabrain" 2025