Installation of the Bleed Pressure-Regulator Valve

TASK 36-11-52-400-010-B
Installation of the Bleed Pressure-Regulator Valve

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

ZONE: 453
FIN: 4001HA ** 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	PLUG - BLANKING
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 85 and 75 lbf.in (0.96 and 0.85 m.daN )
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.V01-002)	cleaning fluid
(Material No.V02-147)	lockwire
(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, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
5	SEAL	AIPC 36-11-52-80-030
6	SEAL	AIPC 36-11-52-80-030

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 36-11-49-000-016-A	Removal of the Sense Line between the Bleed Pressure-Regulator Valve (PRV) and the Pylon Interface
TASK 36-11-49-400-016-A	Installation of the Sense Line between the Bleed Pressure-Regulator Valve (PRV) and the Pylon Interface
TASK 36-11-49-820-010-A	Rig the Bleed Air Ducts
TASK 36-11-52-000-010-B	Removal of the Bleed Pressure-Regulator Valve
TASK 36-11-52-790-010-A	Leak Test of the Bleed-Pressure Regulator Valve with the Engine in Operation
TASK 36-11-52-790-010-A-03	Leak Test of the Bleed-Pressure Regulator Valve with the APU in Operation and with the Bleed Test Set P/N 98L36103002000
TASK 36-11-52-790-010-A-04	Leak Test of the Bleed-Pressure Regulator Valve with the Ground Air-Supply Unit and with the Bleed Test Set P/N 98L36103002000
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 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 70-23-13-911-010-A	Procedures for the Installation of Preformed Packings
TASK 70-23-15-912-010-A	Connection of Electrical Connectors
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground 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
Bleed Pressure-Regulator Valve

3. Job Set-up
Subtask 36-11-52-860-064-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).
(2) Make sure that engine 1(2) is shutdown for a minimum of 5 minutes before you do this procedure.
(3) On 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).
Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.

(4) On ENG panel 115VU:

Make sure that the WARNING NOTICE(S) is in position to tell persons not to start engine 1(2).

(5) On the HP ground connector:

Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the pneumatic system.

(6) On the ENG section of maintenance panel 50VU:

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

(7) Make sure that the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in position below the engine.

Subtask 36-11-52-010-070-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open (Ref. AMM TASK 78-32-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-52-040-059-A ** ON A/C NOT FOR ALL

C. Make sure that the thrust reverser Hydraulic Control Unit (HCU) is deactivated (Ref. AMM TASK 78-30-00-040-012).

Subtask 36-11-52-865-058-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

Subtask 36-11-52-110-051-A ** ON A/C NOT FOR ALL

E. Clean these parts
(1) Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist with the cleaning fluid (Material No.V01-002) , to clean these parts:
(a) The ends of the ducts.
(b) The electrical connector.
(c) The electrical receptacle.
(d) The pressure sense line.
(e) The valve.

Subtask 36-11-52-020-072-A ** ON A/C NOT FOR ALL

F. Removal of the Sense Line

CAUTION: BE CAREFUL WITH THE SEMI-FLEXIBLE SENSE LINE. DEFORMATION OF THE RIGID PART OR LARGE DEFORMATION OF THE FLEXIBLE PART CAN QUICKLY CAUSE LEAKAGE.

CAUTION: USE TWO WRENCHES DURING DISCONNECTION OF THE SENSE LINE, ONE TO MAINTAIN THE FIXED NUT AND THE SECOND ONE TO LOOSEN/TIGHTEN THE SENSE LINE COUPLING.

(1) Make sure that the sense line between the bleed Pressure-Regulator Valve (PRV) and the pylon interface is removed (Ref. AMM TASK 36-11-49-000-016).

4. Procedure
Subtask 36-11-52-420-057-B ** ON A/C NOT FOR ALL

A. Installation of the Bleed Pressure-Regulator Valve (PRV)
(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 D/O 49-00-00-86)
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) Remove the CAP-BLANKING from each electrical connector and receptacle.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Remove the PLUG-BLANKING from each disconnected line end.
(6) Install the PRV as follows:
(a) Install a new AIPC 36-11-52-80-030 SEAL (5) and a new AIPC 36-11-52-80-030 SEAL (6) on the valve (1) (Ref. AMM TASK 70-23-13-911-010).
(b) Put the valve (1) in the correct position for the installation (Ref. AMM TASK 36-11-52-000-010).
(c) Install the couplings (4) and (7).
(d) Tighten the couplings (4) and (7) sufficiently to hold the valve (1) in position.
(e) Make sure that there is a clearance between the valve (1) and the bleed air duct.
(f) TORQUE the coupling nuts to between 85 and 75 lbf.in (0.96 and 0.85 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

CAUTION: MAKE SURE THAT THE CLEARANCE BETWEEN THE VALVE AND THE ENGINE CORE IS CORRECT. DAMAGE TO THE VALVE CAN OCCUR IF CLEARANCE IS LESS THAN 0.39 IN. (10 MM).

(g) Do a check of the clearance between the valve (1) and the engine core flange. If necessary, do the rigging of the bleed air ducts (Ref. AMM TASK 36-11-49-820-010).

Post SB 70-0614

(7) Install the heatshield assembly as follows:

NOTE: If the Vendor Service Bulletin (VSB) V2500-NAC-70-0614 is applied on the engine, the heatshield assembly is installed on the valve.

(a) Install the upper heatshield assembly (9) on the PRV (4001HA) between the valve and the engine case with the hose clamps (10) and (11).
(b) Put the hose clamps (10) and (11) in their position that is almost the same as shown in

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

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 Safety the hose clamps (10) and (11) with lockwire (Material No.V02-147) .

End of Post SB 70-0614

CAUTION: BE CAREFUL WITH THE SEMI-FLEXIBLE SENSE LINE. DEFORMATION OF THE RIGID PART OR LARGE DEFORMATION OF THE FLEXIBLE PART CAN QUICKLY CAUSE LEAKAGE.

CAUTION: USE TWO WRENCHES DURING DISCONNECTION OF THE SENSE LINE, ONE TO MAINTAIN THE FIXED NUT AND THE SECOND ONE TO LOOSEN/TIGHTEN THE SENSE LINE COUPLING.

(8) Install the pressure sense lines as follows:

NOTE: Some interchangeable PRVs have a second pneumatic port on the regulator assembly.

Do not use the second pneumatic port. If necessary, install a PLUG - BLANKING on it.
Pre SB ENG 36-0007

(a) Connect the pressure sense line (3) to the valve.

End of Pre SB ENG 36-0007

Post SB ENG 36-0007

(b) Connect the pressure sense line (12) to the valve.

End of Post SB ENG 36-0007

(c) Connect the pressure sense line (8) to the valve.
(d) TORQUE the pressure sense line nuts to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(9) Connect the electrical connector (2) to the valve (1) (Ref. AMM TASK 70-23-15-912-010).

Subtask 36-11-52-420-068-A ** ON A/C NOT FOR ALL

B. Installation of the Sense Line

CAUTION: BE CAREFUL WITH THE SEMI-FLEXIBLE SENSE LINE. DEFORMATION OF THE RIGID PART OR LARGE DEFORMATION OF THE FLEXIBLE PART CAN QUICKLY CAUSE LEAKAGE.

CAUTION: USE TWO WRENCHES DURING DISCONNECTION OF THE SENSE LINE, ONE TO MAINTAIN THE FIXED NUT AND THE SECOND ONE TO LOOSEN/TIGHTEN THE SENSE LINE COUPLING.

(1) Install the sense line between the bleed Pressure-Regulator Valve (PRV) and the pylon interface (Ref. AMM TASK 36-11-49-400-016).

Subtask 36-11-52-720-052-A ** ON A/C NOT FOR ALL

C. Do the Leak Test of the Bleed Pressure Regulator Valve (4001HA) with the Engine in Operation (Ref. AMM TASK 36-11-52-790-010).

NOTE: As an alternative procedure, you can do this leak test without engines in operation.

5. Close-up
Subtask 36-11-52-410-056-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 halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the access platform(s).

Subtask 36-11-52-440-058-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-410-066-A ** ON A/C NOT FOR ALL

C. 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).

Subtask 36-11-52-862-051-A ** ON A/C NOT FOR ALL

D. 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 04:09:56 UTC