W DOC AIRBUS | AMM A320F

Operational Check of Piston Type Drain Valves in Lower Fuselage Shell from Outside

TASK 53-19-00-710-003-A
Operational Check of Piston Type Drain Valves in Lower Fuselage Shell from Outside

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 120
ZONE: 130
ZONE: 150
1. Reason for the Job
Refer to the MPD TASK: 531900-03
OPERATIONAL CHECK OF PISTON TYPE DRAIN VALVES IN LOWER FUSELAGE SHELL FROM OUTSIDE
NOTE: This task can contribute to fuel savings.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
1
PROBE DIA LESS THAN 5 MM(0.197IN)NON METALLIC FLEXIBLE
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
120
AVIONICS COMPARTMENT
130
FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
150
AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 53-19-41-000-003-A
Removal of the Drain Valves
TASK 53-19-41-400-003-A
Installation of the Drain Valves
TASK 53-29-41-000-001-A
Removal of the Drain Valve
TASK 53-29-41-400-001-A
Installation of the Drain Valve
TASK 53-49-21-000-001-A
Removal of the Drain Valves
TASK 53-49-21-400-001-A
Installation of the Drain Valves
F Piston-Type Drain Valves ** ON A/C NOT FOR ALL
F Piston-Type Drain Valves ** ON A/C NOT FOR ALL
F Piston-Type Drain Valves ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 53-19-00-010-056-A
A. Get Access
   (1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the lower fuselage shell.
4. Procedure
Subtask 53-19-00-710-052-A
A. Operational Check
F Piston-Type Drain Valves ** ON A/C NOT FOR ALL
F Piston-Type Drain Valves ** ON A/C NOT FOR ALL
F Piston-Type Drain Valves ** ON A/C NOT FOR ALL
   (1) Do the operational check of the piston-type drain valves in the lower fuselage shell from outside:
     (a) Examine the piston-type drain valves to find if they open correctly. To do this:
  • Do a visual check of the piston-type drain valves.
  • Push a PROBE DIA LESS THAN 5 MM(0.197IN)NON METALLIC FLEXIBLE pin against the inner part of the valve (the part that moves).
     (b) Examine the drain valves and the adjacent area for signs of damage.
     (c) If the drain valves do not open correctly or if you find damage on the drain valves, replace it:
       1 Remove the related drain valves (Ref. AMM TASK 53-19-41-000-003) (Ref. AMM TASK 53-29-41-000-001) (Ref. AMM TASK 53-49-21-000-001).
       2 Install the drain valves (Ref. AMM TASK 53-19-41-400-003) (Ref. AMM TASK 53-29-41-400-001) (Ref. AMM TASK 53-49-21-400-001).
     (d) If you find dirt around the drain valves, clean the related areas with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
5. Close-up
Subtask 53-19-00-860-050-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the access platform(s).
[Rev.10 from 2021] 2026.04.02 06:28:55 UTC
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