Installation of the Bleed Pressure-Regulator Valve

TASK 36-11-52-400-040-A
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	MALLET - RUBBER
No specific	AR	WARNING NOTICE(S)
No specific	AR	WRENCH - CROWFOOT
No specific	Torque wrench: range to between 40 and 35 lbf.in (0.45 and 0.40 m.daN )
No specific	Torque wrench: range to between 62.5 and 57.5 lbf.in (0.71 and 0.65 m.daN )
No specific	Torque wrench: range to between 80 and 70 lbf.in (0.90 and 0.79 m.daN )
No specific	Torque wrench: range to between 125 and 115 lbf.in (1.41 and 1.30 m.daN )
No specific	Torque wrench: range to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )
No specific	Torque wrench: range to between 160 and 150 lbf.in (1.81 and 1.70 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BBE1)	Non Aqueous Cleaner-- Methyl Alcohol -
(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
25	SEAL	AIPC 36-11-52-02-030

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 36-11-52-790-001-A	Leak Test of the Bleed-Pressure Regulator Valve with the Engine in Operation
TASK 36-11-52-790-001-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 36-11-52-790-001-A-04	Leak Test of the Bleed-Pressure Regulator Valve with 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 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
Bleed Pressure-Regulator Valve
Engine Bleed Air Ducts
Duct Coupling Installation

3. Job Set-up
Subtask 36-11-52-860-059-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) In the cockpit, 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(are) in the position to tell persons not to operate the pneumatic system.

(4) In the cockpit, on ENG panel 115VU:

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

(5) On the HP ground connector:

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

(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(are) in the position to tell persons not to energize FADEC 1(2).

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

Subtask 36-11-52-010-075-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 thrust reverser doors are open (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-52-040-064-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 36-11-52-865-064-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

CAUTION: MAKE SURE THAT THERE IS SUFFICIENT CLEARANCE BETWEEN THE VALVE AND THE ADJACENT COMPONENTS BEFORE YOU INSTALL IT. IF NOT YOU COULD CAUSE DAMAGE TO THE VALVE DURING ITS INSTALLATION.

CAUTION: MAKE SURE THAT THE GUIDE PIN OF THE BLEED DUCT IS CORRECTLY INSERTED IN THE LOCKING DEVICE OF THE VALVE. THIS WILL PREVENT DAMAGE TO THE PNEUMATIC VALVES.

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.

Subtask 36-11-52-110-052-A ** ON A/C NOT FOR ALL

A. Clean the Seal
(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) Clean the surface of the seals (25) with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Methyl Alcohol - (Material No.08BBE1) .

Subtask 36-11-52-210-058-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 36-11-52-420-060-A ** ON A/C NOT FOR ALL

C. Installation of the Bleed Pressure Regulator Valve
(1) From the left hand side:
(a) Remove the blanking caps/plugs from the bleed pressure-regulator valve (20), the ducts (10) and (15), the electrical connector and the sense lines.
(b) Put the valve (20) between the duct (10) and the duct (15). Make sure that the flow arrow points to the joint duct (10).
(2) Install and torque the couplings:

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.

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.

CAUTION: TWO TYPES OF COUPLINGS ARE USED ON THE BLEED AIR DUCTS. IT IS POSSIBLE TO INSTALL ONE OF THESE TYPES INCORRECTLY. WHEN YOU INSTALL THIS TYPE OF COUPLING, MAKE SURE THE SLIDE PART OF THE COUPLING (WITH THE SADDLE WASHER) ENGAGES THE RECESSES OF THE OTHER HALF OF THE COUPLING. IF THE COUPLING IS INSTALLED INCORRECTLY, IT CAN DISENGAGE AND CAUSE LARGE AIR LEAKS AND POSSIBLE DAMAGE.

(a) Attach the valve (20) and the AIPC 36-11-52-02-030 SEAL (25) to the ducts (10) and (15) with the couplings (30).
(b) TORQUE the nuts of the couplings (30) to between 62.5 and 57.5 lbf.in (0.71 and 0.65 m.daN )

. Lightly hit the perimeter of the coupling with a MALLET - RUBBER. TORQUE the couplings to between 125 and 115 lbf.in (1.41 and 1.30 m.daN )

. Lightly hit the perimeter of the coupling again. Do this procedure again until the torque of the unit does not change and is within the limits.
(c) TORQUE the nut of the coupling (45) to between 40 and 35 lbf.in (0.45 and 0.40 m.daN )

. Lightly hit the perimeter of the coupling with a MALLET - RUBBER. TORQUE the couplings to between 80 and 70 lbf.in (0.90 and 0.79 m.daN )

. Lightly hit the perimeter of the coupling again. Do this procedure again until the torque of the unit does not change and is within the limits.
(3) From the right hand side:

PRE SB RA32036-8

(a) Install the sense lines on the valve (20):
1 Use a WRENCH - CROWFOOT and connect the sense lines (35) and (40) to the valve (20).
2 TORQUE the nuts of the sense lines (35) and (40) to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

.
3 Connect the electrical connector 4001HA-A to the valve (20).
(b) Install the sense lines on the valve (20) that has a second port:
1 Use a WRENCH - CROWFOOT and connect the sense lines (35) and (40) to the valve (20).
2 TORQUE the nuts of the sense lines (35) and (40) to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

.
3 Install the blanking plug (60).

NOTE: For some bleed pressure regulator valves (20), a second pneumatic port located on the pneumatic actuator cover is unused, and must be blanked with a plug (60).

4 Connect the electrical connector 4001HA-A to the valve (20).

END OF PRE SB RA32036-8

POST SB RA32036-8

(c) Install the sense lines on the valve (20) that has a second port.
1 Use a WRENCH - CROWFOOT and connect the sense lines (35) and (50) to the valve (20).
2 TORQUE the nuts of the sense lines (35) and (50) to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

.
3 Install the blanking plug (55).

NOTE: For some bleed pressure regulator valves (20), a second pneumatic port located on the pneumatic actuator cover is unused, and must be blanked with a plug (55).

4 Connect the electrical connector 4001HA-A to the valve (20).

END SB RA32036-8

Subtask 36-11-52-420-060-B ** ON A/C NOT FOR ALL

C. Installation of the Bleed Pressure Regulator Valve
(1) From the left hand side:
(a) Remove the blanking caps/plugs from the bleed pressure regulator valve (20), the ducts (10) and (15), the electrical connector and the sense lines.
(b) Put the valve (20) between the duct (10) and the duct (15). Make sure that the flow arrow points to the joint duct (10).
(2) Install and torque the couplings:

. Lightly hit the perimeter of the coupling with a MALLET - RUBBER. TORQUE the couplings to between 125 and 115 lbf.in (1.41 and 1.30 m.daN )

. Lightly hit the perimeter of the coupling with a MALLET - RUBBER. TORQUE the couplings to between 80 and 70 lbf.in (0.90 and 0.79 m.daN )

. Lightly hit the perimeter of the coupling again. Do this procedure again until the torque of the unit does not change and is within the limits.
(3) From the right hand side:
(a) Use a WRENCH - CROWFOOT and connect the sense lines (35) and (50) to the valve (20).
(b) TORQUE the nut of the sense line (35) to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

.
(c) TORQUE the nut of the sense line (50) to between 160 and 150 lbf.in (1.81 and 1.70 m.daN )

.
(d) Install the blanking plug (55).

NOTE: For bleed pressure regulator valve (20), a second pneumatic port located on the regulator assembly is unused, and must be blanked with a plug (55).

(e) Connect the electrical connector 4001HA-A to the valve (20).

Subtask 36-11-52-720-054-A ** ON A/C NOT FOR ALL

D. Do the Leak Test of the Bleed Pressure Regulator Valve (4001HA) with the Engine in Operation (Ref. AMM TASK 36-11-52-790-001).

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

5. Close-up
Subtask 36-11-52-410-058-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 36-11-52-440-055-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-410-068-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 36-11-52-862-052-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 01:12:38 UTC