Installation of the Intermediate Pressure (IP) Bleed Check-Valve

TASK 36-11-41-400-040-A
Installation of the Intermediate Pressure (IP) Bleed Check-Valve

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

FIN: 7110HM ** 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	FOIL - ALUMINUM
No specific	AR	HAMMER - FIBER
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 90 and 75 lbf.in (1.02 and 0.85 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP3010)	dry cleaner
(Material No.CP8004)	lockwire 0.6 mm (0.0236 in.) dia
(Material No.08BBD1)	Non Aqueous Cleaner-- Isopropyl Alcohol -
(Material No.08CKB9)	Cleaner-Hydraulic Spillage Absorbent powder -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
15	E-SEALS	AIPC 36-11-41-02-025

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 36-11-49-400-043-A	Installation of the Mid Stage Tee Duct
TASK 49-00-00-860-006-A	APU Shutdown by External Power
TASK 49-00-00-860-006-A-01	APU Shutdown by Batteries
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 70-51-00-230-002-A	Fluorescent-Penetrant Inspection-Portable-Water Washable
TASK 71-00-00-710-003-B	Engine Automatic Start
TASK 71-00-00-710-004-B	Engine Manual Start
TASK 71-00-00-710-028-B	Engine Shutdown
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
IP Bleed Check Valve

3. Job Set-up
Subtask 36-11-41-860-058-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) shutdown for a minimum of 5 minutes before you do this procedure.
(3) In the cockpit, on AIR COND panel 30VU:
(a) Make sure that the ENG 1(2) BLEED pushbutton-switch is released (the OFF legend is on).
(b) Make sure that the APU BLEED pushbutton-switch is released (the ON legend is off).
(c) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.
(4) In the cockpit, on the ENG panel 115VU:
(a) 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:
(a) 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 the maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR 1(2) pushbutton-switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(7) Make sure that the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in position below the engine.

Subtask 36-11-41-010-053-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 left thrust reverser door is open (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL
(b) FOR [1000EM2] (ENGINE-2)
461AL

Subtask 36-11-41-040-050-A ** ON A/C NOT FOR ALL

C. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).

4. Procedure
Subtask 36-11-41-110-054-A ** ON A/C NOT FOR ALL

A. Before Installation
(1) Clean the surface of the seals (15) with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) .

Subtask 36-11-41-210-059-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 36-11-41-420-050-A ** ON A/C NOT FOR ALL

C. Installation of the IP Bleed Check-Valve

CAUTION: MAKE SURE THAT THE COUNTERSUNK SIDE OF THE WASHER IS AGAINST THE HEAD OF THE BOLT. IF YOU DO NOT PUT THE WASHER IN CORRECTLY, IT CAN CAUSE DAMAGE TO THE PARTS.

(1) If removed, install the tee duct (5) (Ref. AMM TASK 36-11-49-400-043).
(2) 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 TASK 49-00-00-860-006)
For 131-9(A) APU (Ref. AMM TASK 49-00-00-860-009).

(3) 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).

(4) Attach the links (50) and (55) to the tee duct (5) with the bolts (45), the washers (40), and the nuts (35). Do not TORQUE the nuts (35) at this time.

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.

(5) Remove the PLUG-BLANKING from each disconnected line end.
(6) Put the IP bleed check-valve (25) in position between the mid stage tee duct (5) and the fifth stage elbow duct (10):
(a) Make sure that the flow arrow is on the inboard side and points up.
(b) Make sure that the flow arrow on the valve points to the mid-stage tee duct.
(7) Install the couplings (20) as follows:

CAUTION: MAKE SURE THAT THE LOCKING SCREWS OF THE COUPLING ARE IN THE 9 O'CLOCK POSITION, WHEN YOU LOOK INTO THE DIRECTION OF THE FLOW. IF THE LOCKING SCREWS ARE NOT IN THE CORRECT POSITION, DAMAGE TO ENGINE COMPONENTS AND THE ADJACENT STRUCTURE CAN OCCUR.

(a) Attach the IP bleed check-valve (25) to the mid-stage tee duct (5) with the coupling (20) and a AIPC 36-11-41-02-025 E-SEALS (15).
(b) Make sure that the locking screw of the coupling (20) is in the 9 o'clock position when you look into the direction of the flow. The 12 o'clock position is outboard to the engine center line.
(c) Attach the IP bleed check-valve (25) to the fifth-stage elbow duct (10) with the coupling (20) and a AIPC 36-11-41-02-025 E-SEALS (15).
(d) Make sure that the locking screw of the coupling (20) is in the 9 o'clock position when you look into the direction of the flow. The 12 o'clock position is outboard to the engine center line.
(8) TORQUE the nuts (35) to between 90 and 75 lbf.in (1.02 and 0.85 m.daN )

(9) TORQUE the coupling nuts as follows:
(a) TORQUE the coupling nuts to the value shown on the coupling.
(b) Tap the perimeters of the couplings with a HAMMER - FIBER, then TORQUE the coupling nuts again.
(c) Do the torque procedure two times, then TORQUE the coupling nuts again.

Subtask 36-11-41-480-051-A ** ON A/C NOT FOR ALL

D. 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 a Cleaner-Hydraulic Spillage Absorbent powder - (Material No.08CKB9) or dry cleaner (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 the dry developer on all the pneumatic components.

(b) Install an FOIL - ALUMINUM around the pneumatic joint locations:
1 Wind the foil wrap around the joint one time.
2 Twist the seam of the foil wrap to make it tight.
3 Make the foil wrap as tight as possible on the tube but do not cause damage to the foil 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 wrap with a CP8004lockwire 0.6 mm (0.0236 in.) dia on the two sides of the pneumatic joint.

Subtask 36-11-41-410-061-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-41-440-054-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-41-720-050-A ** ON A/C NOT FOR ALL

G. Do this Test
(1) Start the related engine with the automatic or the manual start procedure (Ref. AMM TASK 71-00-00-710-003) or (Ref. AMM TASK 71-00-00-710-004) and keep it at idle.

NOTE: The engine speed at idle does not open the IP bleed check-valve but is sufficient to do a leak check on the two sides of the valve.

(2) In the cockpit, on AIR COND panel 30VU:

Push the ENG 1(2) BLEED pushbutton-switch (OFF legend goes off).

(3) On the ECAM control panel, push the BLEED key (on the lower ECAM DU, the BLEED page comes into view).
(4) On the lower ECAM DU, on the BLEED page:

Make sure that the bleed system operates correctly.

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

Subtask 36-11-41-040-058-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-41-010-065-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-41-080-051-A ** ON A/C NOT FOR ALL

J. Make sure that there are no leaks downstream and upstream at the junctions between the IP bleed valve 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 check.

5. Close-up
Subtask 36-11-41-410-051-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 door (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL
(b) FOR [1000EM2] (ENGINE-2)
461AL

Subtask 36-11-41-440-051-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-41-410-057-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).
(3) Remove the access platform(s).

Subtask 36-11-41-862-050-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 01:09:04 UTC