Installation of the Dual-Flow and Shut-off Valve

TASK 47-21-43-400-001-A
Installation of the Dual-Flow and Shut-off Valve

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: YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:

ON THE THS OR IN THE REAR FUSELAGE
ON TOP OF THE WINGS OR PYLONS.

WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

WARNING: DO NOT GO INTO THE WORK AREA UNTIL A MINIMUM OF 5 MINUTES AFTER YOU REMOVE THE ACCESS PANEL. LET AIR FLOW THROUGH THE WORK AREA. AIR FROM THIS SYSTEM HAS A LOW OXYGEN CONTENT AND CAN CAUSE INJURY OR DEATH.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

FIN: 6YA ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 0.361 and 0.272 m.daN (31.95 and 24.07 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03GEE1)	Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
191AB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
10	PACKING	AIPC 47-21-04-01-020
12	PACKING	AIPC 47-21-04-01-020
3	PACKING	AIPC 47-21-04-01-070
5	PACKING	AIPC 47-21-04-01-070
10	PACKING	AIPC 47-21-84-01-020
12	PACKING	AIPC 47-21-84-01-020
3	PACKING	AIPC 47-21-84-01-040
5	PACKING	AIPC 47-21-84-01-040

E. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 47-31-34-740-001-A	BITE Test of the IGGS with Bleed Air
TASK 47-31-34-740-001-A-01	BITE Test of the IGGS without Bleed Air
TASK 53-25-11-000-001-A	Removal of the Forward Belly Fairing Panels (191AT, 192AT, 191AB, 192AB)
TASK 53-25-11-400-001-A	Installation of Forward Belly Fairing Panels (191AT, 191AB, 192AT, 192AB)
Dual-Flow and Shut-off Valve

3. Job Set-up
Subtask 47-21-43-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).

Subtask 47-21-43-865-051-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	N28
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	P28
** ON A/C NOT FOR ALL
122VU	CSAS / CTRL	1HW	U17

Subtask 47-21-43-010-051-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position below forward belly-fairing panel 191AB.
(2) Make sure that forward belly-fairing panel 191AB is removed (Ref. AMM TASK 53-25-11-000-001).

4. Procedure
Subtask 47-21-43-420-050-B ** ON A/C NOT FOR ALL

A. Installation of the Dual-Flow and Shut-off Valve

CAUTION: BE CAREFUL WHEN YOU TOUCH THIS ASSEMBLY. IT HAS PRECISION- TOLERANCE COMPONENTS WITH VERY POLISHED SURFACES. IF YOU ARE NOT CAREFUL, IT IS VERY EASY TO CAUSE DAMAGE TO THESE COMPONENTS (INTERNAL CONTAMINATION, EXTERNAL IMPACT DAMAGE).

(1) Clean the component interfaces and the adjacent area.
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Apply a thin layer of Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - (Material No.03GEE1) to the new AIPC 47-21-04-01-070 PACKING (3) or AIPC 47-21-84-01-040 PACKING (3), AIPC 47-21-04-01-070 PACKING (5) or AIPC 47-21-84-01-040 PACKING (5), AIPC 47-21-04-01-020 PACKING (10) or AIPC 47-21-84-01-020 PACKING (10) and AIPC 47-21-04-01-020 PACKING (12) or AIPC 47-21-84-01-020 PACKING (12).
(5) Install the packing (3) on the duct assembly (2).
(6) Install the packing (12) on the duct assembly (13).
(7) Install the packing (5) on the outlet fitting DFSOV (9).
(8) Install the packing (10) on the inlet fitting DFSOV (9).
(9) Install the sleeves on the DFSOV (9).
(a) Pull up the latch pawls of the clamp on the coupling (4) to release the sleeve.
(b) Put the sleeve in position on the outlet fitting DFSOV (9). Push the sleeve until it is at the bottom of the outlet fitting DFSOV (9).
(c) Pull up the latch pawls of the clamp on the coupling (11) to release the sleeve.
(d) Put the sleeve in position on the inlet fitting DFSOV (9). Push the sleeve until it is at the bottom of the inlet fitting of the DFSOV (9).
(10) Install the DFSOV (9) on the IGGS Pallet (1).
(a) Carefully put the DFSOV (9) in position to the IGGS pallet (1).
(b) Then support the DFSOV (9) and use the screws (8) and the washers (7) to install it on the IGGS pallet (1).

NOTE: Install the screws (8) by hand at this step, loosely assembly so the DFSOV (9) can be aligned correctly.

(11) Install the clamp of the coupling assembly (4) to the sleeve.
(a) Move the sleeve across the packing (3) and install it on the duct assembly (2).

NOTE: Make sure that packings (3) and (5) are below the sleeve, and that the distance between each packing (3) and (5) and each sleeve end is equal.

(b) Install the clamp on the coupling assembly (4) to the sleeve and engage the latches.
(12) Install the clamp of the coupling assembly (11) to the sleeve.
(a) Move the sleeve across the packing (12) and install it on the duct assembly (13).

NOTE: Make sure that packings (10) and (12) are below the sleeve, and that the distance between each packing (10) and (12) and each sleeve end is equal.

(b) Install the clamp on the coupling assembly (11) to the sleeve and engage the latches.
(13) TORQUE the bolts (8) to between 0.361 and 0.272 m.daN (31.95 and 24.07 lbf.in )

.
(14) Connection of the electrical connector (6).
(a) Remove the TIE WRAP that attaches the electrical connector (6) to the IGGS pallet (1).
(b) Remove the CAP-BLANKING from each electrical connector and receptacle.
(c) Make sure that all the electrical connections are clean and in the correct condition.
(d) Connect the electrical connector (6) to the DFSOV (9).
(15) Make sure that the work area is clean and clear of tools and other items.

Subtask 47-21-43-790-050-B ** ON A/C NOT FOR ALL

B. Leak Test

NOTE: Do the two subsequent steps at the same time. Two persons are necessary to do these steps.

(1) Do the BITE Test of the IGGS with Bleed Air (Ref. AMM TASK 47-31-34-740-001).
(2) Examine the joints at the DFSOV (9) and the duct assemblies (2) and (13) for air leakage.

NOTE: Air leaks are not permitted.

5. Close-up
Subtask 47-21-43-410-050-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install forward belly-fairing panel 191AB (Ref. AMM TASK 53-25-11-400-001).

Subtask 47-21-43-865-052-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	N28
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	P28
** ON A/C NOT FOR ALL
122VU	CSAS / CTRL	1HW	U17

Subtask 47-21-43-860-052-A ** ON A/C NOT FOR ALL

C. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.02 06:43:07 UTC