Deactivation of the Bleed Pressure Regulator Valve

TASK 36-11-00-040-001-A
Deactivation of the Bleed Pressure Regulator Valve

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

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.

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

Access	Test	Specific Tools	Mhr	E/T	Nb Men
YES	YES	NO	0.4	0.4	1

1. Reason for the Job
MMEL 36-11-02A
ENGINE BLEED VALVE (PRV)
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	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
No specific	1	WRENCH - HEXAGONAL
No specific	Torque wrench: range to between 0.6 and 0.4 m.daN (53.10 and 35.40 lbf.in )
No specific	Torque wrench: range to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.357500)	NEVERSEEZ REGULAR GRADE
(Material No.357700)	NEVER-SEEZ PURE NICKEL SPECIAL

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 36-22-00-790-001-A	Leak Check on all the Bleed Air Ducts and the Packs Components
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
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 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
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 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
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 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground 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 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
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
TASK 31-37-73-00	AIDS - ENGINE REPORTS - DESCRIPTION AND OPERATION
TASK 31-37-73-00-01	AIDS - ENGINE REPORTS - DESCRIPTION AND OPERATION
BLEED page of the ECAM Display Unit
Bleed-Pressure Regulator Valve P/N 6774B02 ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6774B02 ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6714D07 ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6714D07 ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6774B03 ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6774B03 ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6774E ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6774E ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6774G ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6774G ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6774F ** ON A/C NOT FOR ALL
Bleed-Pressure Regulator Valve P/N 6774F ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 36-11-00-861-065-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-860-071-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 36-11-00-941-053-A ** ON A/C NOT FOR ALL

C. Safety Precautions
(1) Make sure that the engine 1(2) is shut down occurred not less than 5 minutes.
(2) On the ENG panel 115VU:

put a WARNING NOTICE(S) to tell persons not to start the engine 1(2).

(3) On the MAINTENANCE panel 50VU:

make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off
install a warning notice to tell persons not to operate the FADEC SYSTEM.

(4) On the AIR COND panel 30VU:

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

(5) On the HP ground connector:

put a warning notice to tell persons not to pressurize the pneumatic system.

Subtask 36-11-00-865-063-A ** ON A/C NOT FOR ALL

D. Open, safety and tag 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 36-11-00-010-050-A ** ON A/C NOT FOR ALL

E. 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 the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position below the engine.

Subtask 36-11-00-040-050-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-010-071-A ** ON A/C NOT FOR ALL

G. Open the left thrust-reverser cowl door (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL
(2) FOR [1000EM2] (ENGINE-2)
461AL

Subtask 36-11-00-010-050-B ** ON A/C NOT FOR ALL

H. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in to position below the engine.

Subtask 36-11-00-040-050-B ** ON A/C NOT FOR ALL

I. Deactivate the Thrust Reverser

WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Deactivate the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 36-11-00-010-071-B ** ON A/C NOT FOR ALL

J. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-00-010-050-C ** ON A/C NOT FOR ALL

K. 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 the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position below the engine.

Subtask 36-11-00-040-050-C ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-010-071-C ** ON A/C NOT FOR ALL

M. Open the left thrust-reverser cowl door (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL
(2) FOR [1000EM2] (ENGINE-2)
461AL.

4. Procedure
Subtask 36-11-00-040-056-A ** ON A/C NOT FOR ALL

A. Deactivation of the Bleed Pressure Regulator Valve

CAUTION: CAREFULLY ALIGN THE LOCKING PIN WITH THE DEACTIVATING HOUSING ON THE VALVE. IF YOU ALIGN IT INCORRECTLY OR IF YOU TIGHTEN IT TOO MUCH, THE LOCKING PIN CAN REMAIN IN POSITION AND YOU CAN CAUSE DAMAGE TO THE LOCKING PIN THREAD.

(1) On bleed-pressure regulator valve P/N 6774B02 and P/N 6714D01 to 6714D06:

Bleed-Pressure Regulator Valve P/N 6774B02 ** ON A/C NOT FOR ALL

Bleed-Pressure Regulator Valve ** ON A/C NOT FOR ALL

(a) Make sure the manual override control is in the CLOSED position:
1 If necessary, use a WRENCH - HEXAGONAL to set the manual override control to the CLOSED position.
(b) Remove the lockwire as follows:

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.

1 Cut, remove and discard the lockwire from the knurled screw (1).
(c) Remove the knurled screw (1) from its storage port.
1 Keep the washer (2) to install it in the reactivation procedure.
(d) Install the knurled screw (1) as follows:

CAUTION: BEFORE YOU INSTALL THE LOCKING PIN OR SAFETY SCREW OR SPECIAL SCREW OR KNURLED SCREW, YOU MUST APPLY NEVER-SEEZ REGULAR GRADE. IF YOU DO NOT APPLY IT, YOU CAN CAUSE DAMAGE TO THE MANUAL OVERRIDE CONTROL OF THE VALVE.

1 Apply NEVERSEEZ REGULAR GRADE (Material No.357500) or NEVER-SEEZ PURE NICKEL SPECIAL (Material No.357700) on the knurled screw (1).
2 On the manual override control:
a Lock the override control with the knurled screw (1).

NOTE: The pressure of the valve is released when you remove the knurled screw (1) from its storage port.

3 Tighten the knurled screw (1) with your hand.
(2) On bleed-pressure regulator valve P/N 6774B03 and P/N 6714D07:

Bleed-Pressure Regulator Valve P/N 6714D07 ** ON A/C NOT FOR ALL

Bleed-Pressure Regulator Valve P/N 6774B03 ** ON A/C NOT FOR ALL

1 Cut, remove and discard the lockwire from the safety screw (1).
(c) Remove the safety screw (1) from its storage port.
1 Keep the washer (2) to install it in the reactivation procedure.
(d) Install the safety screw (1) as follows:

1 Apply NEVERSEEZ REGULAR GRADE (Material No.357500) or NEVER-SEEZ PURE NICKEL SPECIAL (Material No.357700) on the safety screw (1).
2 On the manual override control:
a Lock the override control with the safety screw (1).

NOTE: The pressure of the valve is released when you remove the safety screw (1) from its storage port.

3 TORQUE the safety screw (1) to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in )

.
(3) On bleed-pressure regulator valve P/N 6774E:

Bleed-Pressure Regulator Valve P/N 6774E ** ON A/C NOT FOR ALL

1 Cut, remove and discard the lockwire from the special screw (1).
(c) Remove the special screw (1) from its storage port.
1 Keep the washer (2) to install it in the reactivation procedure.
(d) Remove and discard the packing (3).
(e) Install the special screw (1) as follows:

1 Apply NEVERSEEZ REGULAR GRADE (Material No.357500) or NEVER-SEEZ PURE NICKEL SPECIAL (Material No.357700) on the special screw (1).
2 On the manual override control:
a Lock the override control with the special screw (1).

NOTE: The pressure of the valve is released when you remove the special screw (1) from its storage port.

3 Tighten the special screw (1) with your hand.
(4) On bleed-pressure regulator valve P/N 6774F and P/N 6774G:

Bleed-Pressure Regulator Valve P/N 6774G ** ON A/C NOT FOR ALL

Bleed-Pressure Regulator Valve P/N 6774F ** ON A/C NOT FOR ALL

1 Cut, remove and discard the lockwire from the safety screw (1).
(c) Remove the safety screw (1) from its storage port.
(d) Remove and discard the packing (2).
(e) Install the safety screw (1) as follows:

NOTE: The pressure of the valve is released when you remove the safety screw (1) from its storage port.

3 TORQUE the safety screw (1) to between 0.6 and 0.4 m.daN (53.10 and 35.40 lbf.in )

Subtask 36-11-00-865-089-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
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 36-11-00-040-093-A ** ON A/C NOT FOR ALL

C. Deactivation of the Bleed Pressure Regulator Valve
(1) On the ECAM control panel, push the BLEED key (on the lower ECAM DU, the BLEED page comes into view).
(a) On the lower ECAM DU, on the BLEED page:

Make sure that the related bleed-pressure regulator-valve symbol shows closed in green.

Subtask 36-11-00-790-058-A ** ON A/C NOT FOR ALL

D. Check of the Bleed Air Ducts

NOTE: This check is only applicable to aircraft with Overpressure Valve (OPV) P/N 6740G01XXXX. It is necessary to do a check of the valve reference because the valves are interchangeable.

(1) Get the post flight report (Ref. AMM D/O 31-37-73-00):
(a) If the class 1 fault message PRESS REG-V 4001HA1(2) and the ECAM warning AIR ENG 1(2) BLEED FAULT comes into view during the flight phases 3, 4 or 5, get the ENG TAKE OFF REPORT in the MCDU and do a check of the pack values:
1 If the pack value is 00 or 01 (the pack was off during the last take off):
a Do the leak check of all the bleed air ducts and pack components (Ref. AMM TASK 36-22-00-790-001).
b Do a visual inspection of the bleed air ducts and items of equipment downstream the OPV (along the pylon and center fuselage to the starter valves, flow control valves, HP ground connectors, pressure service check valves and APU check valve but not the wing ducting). Make sure that there is no deformation and be very careful when you do the check of the bellows.

If there is a damage or deformation, repair or replace the damaged duct or equipment.

5. Close-up
Subtask 36-11-00-410-050-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) Close the left thrust-reverser cowl door (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL
(b) FOR [1000EM2] (ENGINE-2)
461AL

Subtask 36-11-00-440-050-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-410-070-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 access platform(s).
(3) Remove the WARNING NOTICE(S).

Subtask 36-11-00-410-050-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 halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-00-440-050-B ** ON A/C NOT FOR ALL

E. Activate the thrust reverser HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 36-11-00-410-070-B ** ON A/C NOT FOR ALL

F. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).

Subtask 36-11-00-410-050-C ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-440-050-C ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-410-070-C ** ON A/C NOT FOR ALL

I. 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 access platform(s).
(3) Remove the WARNING NOTICE(S).

Subtask 36-11-00-942-053-A ** ON A/C NOT FOR ALL

J. Put a warning notice in the cockpit to tell the crew that the left (right) bleed pressure regulator valve is closed and deactivated.

Subtask 36-11-00-865-064-A ** ON A/C NOT FOR ALL

K. 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 36-11-00-860-072-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-869-112-A ** ON A/C NOT FOR ALL

M. Make an entry in the logbook.

Subtask 36-11-00-862-065-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 01:06:18 UTC