Leak Test of the Bleed-Pressure Regulator Valve with the Engine in Operation

TASK 36-11-52-790-001-A
Leak Test of the Bleed-Pressure Regulator Valve with the Engine in Operation

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

WARNING: MAKE SURE THAT THE LANDING GEAR GROUND SAFETIES AND THE WHEEL CHOCKS ARE IN POSITION. MOVEMENT OF THE AIRCRAFT CAN BE DANGEROUS.

CAUTION: DO NOT MOTOR THE ENGINE WITH EITHER THE FAN COWLS OR THRUST REVERSER HALVE(S) OPEN WHEN THE WIND SPEED IS 50 MPH (80 KM/H) OR MORE. OTHERWISE INJURY AND/OR DAMAGE TO THE ENGINE CAN OCCUR.

CAUTION: MAKE SURE THE FAN COWLS AND THRUST REVERSER HALVES ARE SECURELY HELD OPEN DURING MOTORING. MAKE SURE HOLD OPEN RODS ARE SERVICEABLE.

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL
FIN: 4001HA ** ON A/C NOT FOR ALL

1. Reason for the Job
Do this test after removal/installation of the bleed pressure regulator valve to make sure that:

there are no leaks on the removed parts
the electrical connectors are correctly installed.
You must start the engines to do this procedure.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE
No specific	AR	FOIL - ALUMINUM
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP3010)	dry developer
(Material No.CP8004)	lockwire 0.6 mm (0.0236 in.) dia
(Material No.08CKB9)	Cleaner-Hydraulic Spillage Absorbent powder -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. 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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 70-51-00-230-002-A	Fluorescent-Penetrant Inspection-Portable-Water Washable
TASK 71-00-00-710-003-A	Engine Automatic Start
TASK 71-00-00-710-003-B	Engine Automatic Start
TASK 71-00-00-710-004-A	Engine Manual Start
TASK 71-00-00-710-004-B	Engine Manual Start
TASK 71-00-00-710-028-A	Engine Shutdown
TASK 71-00-00-710-028-B	Engine Shutdown
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors

3. Job Set-up
Subtask 36-11-52-861-062-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 36-11-52-860-068-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-941-068-A ** ON A/C NOT FOR ALL

C. Safety Precautions
(1) Make sure that the engine shutdown occurred not less than 5 minutes before you do this procedure.
(2) On the AIR COND panel 30VU:

make sure that the ENG 1(2) BLEED pushbutton switch is released (OFF legend is on),
make sure that the APU BLEED pushbutton switch is released (ON legend is off),
put a WARNING NOTICE(S) to tell persons not to operate the pneumatic system.

(3) On the HP ground connector:

put a WARNING NOTICE(S) to tell persons not to pressurize the pneumatic system.

Subtask 36-11-52-010-081-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position at the bleed pressure regulator valve.

Subtask 36-11-52-040-082-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-010-110-A ** ON A/C NOT FOR ALL

F. Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-52-010-081-B ** ON A/C NOT FOR ALL

G. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position at the bleed pressure regulator valve.

Subtask 36-11-52-040-082-B ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-010-110-B ** ON A/C NOT FOR ALL

I. Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure
Subtask 36-11-52-480-056-A ** ON A/C NOT FOR ALL

A. 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) (Ref. AMM TASK 70-51-00-230-002) around the pneumatic joints, only on the connections of the removed pneumatic components.

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

(b) Install an FOIL - ALUMINUM around the locations of the pneumatic joint as follows:
1 Wind the foil around the joint one time.
2 Twist the seam of the foil tight.
3 Make the foil 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 with CP8004lockwire 0.6 mm (0.0236 in.) dia on the two sides of the pneumatic joint.

Subtask 36-11-52-410-074-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 thrust reverser doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-52-440-073-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-410-074-B ** ON A/C NOT FOR ALL

D. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-52-440-073-B ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-720-057-A ** ON A/C NOT FOR ALL

F. Do this Test
(1) On ECAM control panel 11VU, push the BLEED key:
(a) 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 bleed-pressure regulator valve is in the closed position.

(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 the engine RPM to idle.
(4) On AIR COND panel 30VU:
(a) Push the ENG 1(2) BLEED pushbutton-switch (OFF legend goes off).
(b) Push the PACK 1 and PACK 2 pushbutton switches (OFF legend goes off).
(5) After 5 minutes, on the lower ECAM DU, on the BLEED page:

Make sure that the related bleed-pressure regulator valve is in the open position.

(6) Do the engine shutdown procedure (Ref. AMM TASK 71-00-00-710-028).

Subtask 36-11-52-040-083-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-010-082-A ** ON A/C NOT FOR ALL

H. Get Access
(1) Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-52-040-083-B ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-010-082-B ** ON A/C NOT FOR ALL

J. Get Access
(1) Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-52-080-056-A ** ON A/C NOT FOR ALL

K. Make sure that there are no leaks at the junction between the bleed pressure regulator valve, the sense lines 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 do the leak test.

5. Close-up
Subtask 36-11-52-410-075-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) Close the thrust reverser doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the access platform(s).

Subtask 36-11-52-440-074-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-410-103-A ** ON A/C NOT FOR ALL

C. 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 36-11-52-410-075-B ** ON A/C NOT FOR ALL

Subtask 36-11-52-440-074-B ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-410-103-B ** ON A/C NOT FOR ALL

F. 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 36-11-52-860-069-A ** ON A/C NOT FOR ALL

G. Put the aircraft back to its initial configuration.
(1) On the AIR control panel 30VU:

release the ENG BLEED pushbutton switches (OFF legends come on).

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

Subtask 36-11-52-862-060-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 01:12:48 UTC