W DOC AIRBUS | AMM A320F

Installation of the Hydraulic Box

TASK 38-12-41-400-004-A
Installation of the Hydraulic Box

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
1
CONTAINER 5 L (1.32 USGAL)
No specific
1
WARNING NOTICE(S)
No specific
Torque wrench: range to between 0.627 and 0.513 m.daN (55.49 and 45.40 lbf.in ) T
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
200
UPPER HALF FUSELAGE
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 20-28-00-912-802-A
Electrical Bonding - General Maintenance Procedure
TASK 24-42-00-861-001-A
Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A
De-energize the Ground Service Network Supplied from the External Power
TASK 25-45-26-400-001-A
Installation of the Lining
TASK 38-10-00-614-001-A
Pressurization of the Potable Water System from a Ground Air Supply
TASK 38-10-00-614-002-A
Depressurization of the Potable Water System
TASK 38-10-00-670-805-A
Local Disinfection of the Potable-Water System Components
TASK 38-12-41-400-007-A
Installation of the Inline Filters
TASK 38-12-41-710-001-A
Operational Test of the Electronic Water Faucet
F Electronic Hydraulic Box
3. Job Set-up
Subtask 38-12-41-860-056-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Make sure that the ground service network is energized from the external power (Ref. AMM TASK 24-42-00-861-001).
   (2) Make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
   (3) Make sure that the potable water-shutoff valve in the lavatory is closed.
   (4) Make sure that the WARNING NOTICE(S) are in position to tell persons not to open the potable-water shutoff valve in the lavatory.
   (5) Make sure that a container to collect unwanted material is in position.
Subtask 38-12-41-865-053-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-M34MGA04
2001VUVACU TOIL SYS-LAV PWR-D39MGA03
2001VUVACU TOIL SYS-LAV PWR-L45MGA02
2001VUVACU TOIL SYS-LAV PWR-A32MGA01
4. Procedure
Subtask 38-12-41-420-053-A ** ON A/C NOT FOR ALL
A. Installation of the Hydraulic Box
   (1) Put the hydraulic box (10) in its installation position and install the washers (3) and the screws (4).
   (2) Put the bonding strap (9) in position and install the washer (8) and the screw (7).
   (3) Protect the bonding (Ref. AMM TASK 20-28-00-912-802).
   (4) Remove the PLUG-BLANKING from each disconnected line end.
   (5) Make sure that the line end-fittings are serviceable.
   (6) Install the inline filters (Ref. AMM TASK 38-12-41-400-007).
   (7) Connect the connection (1).
CAUTION: WHEN YOU TORQUE THE NUT, ALWAYS USE A SECOND WRENCH TO APPLY A COUNTERTORQUE TO THE FITTING.
   (8) TORQUE the connection (1) to between 0.627 and 0.513 m.daN (55.49 and 45.40 lbf.in ) T.
   (9) Remove the CAP-BLANKING from each electrical connector and receptacle.
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.
   (10) Connect the electrical connector (2).
Subtask 38-12-41-865-069-A ** ON A/C NOT FOR ALL
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-M34MGA04
2001VUVACU TOIL SYS-LAV PWR-D39MGA03
2001VUVACU TOIL SYS-LAV PWR-L45MGA02
2001VUVACU TOIL SYS-LAV PWR-A32MGA01
5. Close-up
Subtask 38-12-41-790-053-A ** ON A/C NOT FOR ALL
A. Leak Test
F Electronic Hydraulic Box ** ON A/C NOT FOR ALL
   (1) Remove the CONTAINER 5 L (1.32 USGAL).
   (2) Open the potable water-shutoff valve in the lavatory.
   (3) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001).
   (4) Operate the water faucet and make sure that there are no leaks at the hydraulic box (10).
NOTE: Leaks are not permitted.
   (5) Put the cover (5) in its installation position and install the screws (6).
Subtask 38-12-41-710-053-A ** ON A/C NOT FOR ALL
B. Operational Test
   (1) Do the operational test of the electronic water faucet (Ref. AMM TASK 38-12-41-710-001).
Subtask 38-12-41-670-051-A ** ON A/C NOT FOR ALL
C. Local Disinfection
   (1) Do the local disinfection of the potable-water system components (Ref. AMM TASK 38-10-00-670-805).
Subtask 38-12-41-410-057-A ** ON A/C NOT FOR ALL
D. Close Access
F Electronic Hydraulic Box ** ON A/C NOT FOR ALL
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close access to the hydraulic box (10) (Ref. AMM TASK 25-45-26-400-001).
   (3) Remove the WARNING NOTICE(S).
Subtask 38-12-41-862-052-A ** ON A/C NOT FOR ALL
E. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
[Rev.10 from 2021] 2026.04.02 06:25:40 UTC
"WTRUIB" 2025