Installation of the High-Pressure Bleed Valve

TASK 36-11-51-400-042-A
Installation of the High-Pressure Bleed Valve

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

ZONE: 453
FIN: 4000HA ** 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	AR	ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE
No specific	AR	FOIL - ALUMINUM
No specific	1	MALLET - PLASTIC
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP3010)	dry developer
(Material No.CP5063)	silicone lubricant
(Material No.CP8004)	lockwire 0.6 mm (0.0236 in.) dia
(Material No.08BBE1)	Non Aqueous Cleaner-- Methyl Alcohol -
(Material No.08CKB9)	Cleaner-Hydraulic Spillage Absorbent powder -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
453	HOT SECTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
35	E-SEAL	AIPC 36-11-49-01-160
20	E-SEAL	AIPC 36-11-51-02-025

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 24-41-00-862-002-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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 49-00-00-860-006-A	APU Shutdown by External Power
TASK 49-00-00-860-006-A-01	APU Shutdown by Batteries
TASK 49-00-00-860-009-A	APU Shutdown by External Power (131-9(A))
TASK 49-00-00-860-009-A-01	APU Shutdown by Batteries (131-9(A))
TASK 71-00-00-710-003-B	Engine Automatic Start
TASK 71-00-00-710-004-B	Engine Manual Start
TASK 71-00-00-710-028-B	Engine Shutdown
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
High Pressure Bleed Valve

3. Job Set-up
Subtask 36-11-51-860-056-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) or (Ref. AMM TASK 24-41-00-861-002).

CAUTION: MAKE SURE THE SMOOTH CIRCULAR SURFACE OF THE COUPLING IS RADIALLY OUTBOARD FROM THE ENGINE. DO NOT LET THE COUPLING TOUCH ENGINE COMPONENTS OR STRUCTURE. DAMAGE TO THE COMPONENTS OR STRUCTURE COULD OCCUR.

(2) Make sure that the engine 1(2) shut down occurred not less than 5 minutes before you do this procedure.
(3) On AIR COND panel 30VU:
(a) Make sure that the ENG 1(2) BLEED pushbutton-switch is released (OFF legend is on).
(b) Make sure that the APU BLEED pushbutton-switch is released (ON legend is off).
(c) Make sure that the WARNING NOTICE(S) is in its position to tell persons not to operate the pneumatic system.
(4) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than 5 minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in its position to tell the persons not to operate:

The ENG/MODE selector switch and
The ENG/MASTER 1(2) control switch.

(5) On the HP ground connector:
(a) Make sure that the WARNING NOTICE(S) is in its position to tell persons not to pressurize the pneumatic system.
(6) On the ENG section of MAINTENANCE panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR 1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in its position to tell persons not to energize FADEC 1(2).
(7) Make sure that the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in its position below the engine.

Subtask 36-11-51-010-053-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the left thrust reverser door is open (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL
(b) FOR [1000EM2] (ENGINE-2)
461AL

Subtask 36-11-51-040-050-A ** ON A/C NOT FOR ALL

C. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 36-11-51-865-065-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22

4. Procedure
Subtask 36-11-51-110-052-A ** ON A/C NOT FOR ALL

A. Clean the Seals
(1) If you use the APU to energize the electrical circuits, stop the APU:

For GTCP 36-300 APU (Ref. AMM D/O 49-00-00-86)
For APS 3200 APU (Ref. AMM TASK 49-00-00-860-006)
For 131-9(A) APU (Ref. AMM TASK 49-00-00-860-009).

(2) In the cockpit, on the SD bleed page:
(a) Make sure that the pressure and the temperature of the bleed-air duct system are in ambient conditions.

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

(3) Clean the surface of the AIPC 36-11-51-02-025 E-SEAL (20) and AIPC 36-11-49-01-160 E-SEAL (35) with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Methyl Alcohol - (Material No.08BBE1) .

Subtask 36-11-51-210-051-A ** ON A/C NOT FOR ALL

B. Visual Inspection of the Seals
(1) Examine the seals for signs of oxidation, carbon flakes and foreign materials on the face that touches the duct flanges.
(2) Examine the surface and the edges of the seals for dents, pitting, cracks, scratches and distortion.
(3) If you cannot remove the foreign materials from the seals or if you find damage or distortion, replace the seals.

Subtask 36-11-51-420-052-A ** ON A/C NOT FOR ALL

C. Installation of the High Pressure (HP) Bleed Valve
(1) Remove the PLUG-BLANKING from each disconnected line end.
(2) Installation of the valve.

CAUTION: MAKE SURE THAT THE KEYWAY ON THE VALVE IS ENGAGED WITH THE KEY ON THE DUCT. IF THE POSITION OF THE KEYWAY IS NOT CORRECT, DAMAGE TO THE VALVE AND ITS PARTS CAN OCCUR.

(a) Attach the HP bleed valve (25) to the duct (5) with the coupling (15) and the E-seal (20).
(b) Tighten the coupling (15) sufficiently to attach the HP bleed valve (25) to the duct (5).
(c) Make sure that the flow arrow on the valve points to the duct (5) and that index slot is aligned.
(d) Attach the duct (10) to the HP bleed valve (25) and the ducts (40) and (45) with the couplings (15) and (30) and the E-seals (20) and (35).
(e) Make sure that the index slot is aligned.
(f) Tighten the all coupling nuts to 50 percent of the torque value written on the face of the coupling.
(g) Hit the external face of the coupling lightly with a MALLET - PLASTIC
(h) TORQUE the couplings to 100 percent of the torque value written on the face of the coupling.
(i) Lightly hit coupling again.
(j) Do this procedure again, then TORQUE the coupling to 100 percent of the value written on the face of the coupling.
(3) Make sure that the sense tube and fittings are serviceable.
(4) Apply lubricant on the sense tube.

CAUTION: APPLY ONLY A THIN LAYER OF (CP5063) SILICON LUBRICANT TO THE THREADS OF THE HOSE TUBE ASSEMBLY COUPLING NUTS AND FITTING ON THE VALVES, AND REMOVE UNWANTED LUBRICANT. KEEP LUBRICANT FROM GOING INTO THE HOSE TUBE ASSEMBLY AND VALVES. IF TOO MUCH LUBRICANT IS USED, THEN LUBRICANT MAY CLOG THE HOSE TUBE ASSEMBLY AND ENTER THE VALVES AND DAMAGE THOSE COMPONENTS.

(a) Lubricate the threads of the sense tube fittings with silicone lubricant (Material No.CP5063)
(5) Connect the HP sense tube to the HP bleed valve (25) and make sure that the HP sense tube is in the correct position.
(6) Do the step that follows to torque the fitting.

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

(a) TORQUE the fitting on the HP sense tube to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

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.

(7) Remove the CAP-BLANKING from each electrical connector and receptacle.
(8) Connect the electrical connector (4000HA-A) to the HP bleed valve. Tighten the connector by hand plus one-eighth turn.

Subtask 36-11-51-480-052-A ** ON A/C NOT FOR ALL

D. Preparation for the Leak Test
(1) Find the location of a pneumatic joint air-leak with one of the two procedures that follow:
(a) Apply Cleaner-Hydraulic Spillage Absorbent powder - (Material No.08CKB9) or dry developer (Material No.CP3010) around the pneumatic joints, only on the connections of the removed pneumatic components.

NOTE: Airbus recommends that you not to apply the dry developer on all the pneumatic components.

(b) Install an FOIL - ALUMINUM around the pneumatic joint locations:
1 Wind the foil wrap around the joint one time.
2 Twist the seam of the foil wrap to make it tight.
3 Make the foil wrap as tight as possible on the tube but do not cause damage to the wrap.

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

4 Attach the foil wrap with a CP8004lockwire 0.6 mm (0.0236 in.) dia on the two sides of the pneumatic joint.

Subtask 36-11-51-410-061-A ** ON A/C NOT FOR ALL

E. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the left thrust reverser doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL
(b) FOR [1000EM2] (ENGINE-2)
461AL

Subtask 36-11-51-440-055-A ** ON A/C NOT FOR ALL

F. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 36-11-51-865-067-A ** ON A/C NOT FOR ALL

G. 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
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22

Subtask 36-11-51-860-061-A ** ON A/C NOT FOR ALL

H. Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).

Subtask 36-11-51-720-053-A ** ON A/C NOT FOR ALL

I. Do this Test
(1) on the ECAM control panel 11VU, push the bleed key (on the lower ECAM DU, the BLEED page comes into view).
(2) On the lower ECAM DU, on the BLEED page:

Make sure that the related HP bleed valve is shown closed.

(3) Start the related engine with the automatic or manual start procedure (Ref. AMM TASK 71-00-00-710-003) or (Ref. AMM TASK 71-00-00-710-004) and keep it at idle.
(4) On the AIR COND panel 30VU:

Push the ENG 1(2) BLEED pushbutton switch (OFF legend goes off).

(5) After 5 minutes, make sure on the lower ECAM DU, on the BLEED page

Make sure that the HP bleed valve is open.

(6) Shut-down the engine (Ref. AMM TASK 71-00-00-710-028).

Subtask 36-11-51-040-058-A ** ON A/C NOT FOR ALL

J. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 36-11-51-010-064-A ** ON A/C NOT FOR ALL

K. Get Access
(1) Open the left thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL
(b) FOR [1000EM2] (ENGINE-2)
461AL

Subtask 36-11-51-080-052-A ** ON A/C NOT FOR ALL

L. Make sure that there are no leaks at the junction between the HP bleed valve and the duct on the related engine.

NOTE: There is a leak when the foil installed on the duct breaks or when it is too hot.
There is a leak when the leak air removes the dry developer from the junction.

(1) Remove the materials used to check leaks.

5. Close-up
Subtask 36-11-51-860-062-A ** ON A/C NOT FOR ALL

A. Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).

Subtask 36-11-51-410-051-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the left thrust reverser door (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL
(b) FOR [1000EM2] (ENGINE-2)
461AL
(3) Remove the access platform(s).

Subtask 36-11-51-440-051-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 36-11-51-410-057-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).

Subtask 36-11-51-862-050-A ** ON A/C NOT FOR ALL

E. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002) or (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 04:10:01 UTC