Deactivation of the HP Bleed Valve in the CLOSED Position to Isolate the IP Bleed Check-Valve

TASK 36-11-00-040-002-A
Deactivation of the HP Bleed Valve in the CLOSED Position to Isolate the IP Bleed Check-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: 4000HA ** ON A/C NOT FOR ALL
FIN: 7110HM ** ON A/C NOT FOR ALL
Task Summary

Access	Test	Specific Tools	Mhr	E/T	Nb Men
YES	YES	NO	1.4	1.4	1

1. Reason for the Job
MMEL 36-11-06B
ENGINE BLEED IP CHECK VALVE
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 0.5 m.daN (53.10 and 44.25 lbf.in )
No specific	Torque wrench: range to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in )

B. 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

C. 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 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
HP Bleed Valve P/N 6773B02 ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6773B02 ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6713D01-07 ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6713D01-07 ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6773B03 ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6773B03 ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6713D08 ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6713D08 ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6773E ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6773E ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6773F and 6773G ** ON A/C NOT FOR ALL
HP Bleed Valve P/N 6773F and 6773G ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 36-11-00-861-066-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-941-063-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) Make sure that the engine 1(2) is shut down occurred not less than 5 minutes.
(2) 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(S) to tell persons not to operate the pneumatic system.

(3) On the ENG panel 115VU:

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

(4) On the HP ground connector:

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

(5) On the MAINTENANCE panel 50VU:

make sure that the ON legend of the ENG/FADEC GND PWR 1(2) pushbutton switch is off
put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 36-11-00-865-067-A ** ON A/C NOT FOR ALL

C. 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 36-11-00-010-054-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 the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position below the engine.

Subtask 36-11-00-040-052-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-010-073-A ** ON A/C NOT FOR ALL

F. 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 36-11-00-010-054-B ** ON A/C NOT FOR ALL

G. 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 36-11-00-040-052-B ** ON A/C NOT FOR ALL

H. 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 36-11-00-010-073-B ** ON A/C NOT FOR ALL

I. 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 36-11-00-010-054-C ** ON A/C NOT FOR ALL

J. 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 36-11-00-040-052-C ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-010-073-C ** ON A/C NOT FOR ALL

L. 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 36-11-00-040-057-A ** ON A/C NOT FOR ALL

A. Deactivation of the IP Bleed Check 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 the HP bleed valve P/N 6773B02 and P/N 6713D01 to 6713D07:

HP Bleed Valve P/N 6773B02 ** ON A/C NOT FOR ALL

HP Bleed Valve P/N 6713D01-07 ** ON A/C NOT FOR ALL

(a) Use a WRENCH - HEXAGONAL to set the manual override control to the CLOSED position.
(b) Removal of the lockwire:

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 from its the storage port.
1 Keep the washer (2) to install it in the reactivation procedure.
(d) Lock the override control with the knurled screw (1).

NOTE: The pressure of the valve is released when you remove the locking pin from its storage port.

(e) Tighten the knurled screw (1) with your hand.
(2) On the HP bleed valve P/N 6773B03 and P/N 6713D08:

HP Bleed Valve P/N 6773B03 ** ON A/C NOT FOR ALL

HP Bleed Valve P/N 6713D08 ** ON A/C NOT FOR ALL

(a) Use a WRENCH - HEXAGONAL to set the manual override control to the CLOSED position.
(b) Removal of the lockwire:

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) Lock the override control with the safety screw (1).

NOTE: the pressure of the valve is released when you remove the locking pin from its storage port.

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

.
(3) On the HP bleed valve P/N 6773E:

HP Bleed Valve P/N 6773E ** ON A/C NOT FOR ALL

(a) Use a WRENCH - HEXAGONAL to set the manual override control to the CLOSED position.
(b) Removal of the lockwire:

1 Cut, remove and discard the lockwire from the special screw (1).
(c) Remove the special screw (1) from it storage port.
1 Keep the washer (2) to install it in the reactivation procedure.
(d) Remove and discard the packing (3).
(e) Lock the override control with the special screw (1).

NOTE: The pressure of the valve is released when you remove the locking pin from its storage port.

(f) Tighten the special screw (1) with your hand.
(4) On the HP bleed valve P/N 6773F and P/N 6773G:

HP Bleed Valve P/N 6773F and 6773G ** ON A/C NOT FOR ALL

(a) Use a WRENCH - HEXAGONAL to set the manual override control to the CLOSED position.
(b) Removal the lockwire:

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) Lock the override control with the special screw (1).

NOTE: the pressure of the valve is released when you remove the locking pin from its storage port.

(f) TORQUE the safety screw (1) to between 0.6 and 0.5 m.daN (53.10 and 44.25 lbf.in )

5. Close-up
Subtask 36-11-00-410-054-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 36-11-00-440-053-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-410-073-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 36-11-00-410-054-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 36-11-00-440-053-B ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-410-073-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 36-11-00-410-054-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 36-11-00-440-053-C ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-410-073-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 36-11-00-941-065-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-865-068-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 36-11-00-869-113-A ** ON A/C NOT FOR ALL

L. Make an entry in the logbook.

Subtask 36-11-00-862-066-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 01:06:20 UTC