Installation of the Intermediate Pressure (IP) Bleed Check Valve

TASK 36-11-41-400-041-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	MALLET - RUBBER
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 70 and 50 lbf.in (0.79 and 0.57 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP3010)	dry developer
(Material No.CP8004)	lockwire 0.6 mm (0.0236 in.) dia
(Material No.08BBE1)	Non Aqueous Cleaner-- Methyl 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, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
20	E-SEALS	AIPC 36-11-41-02-020

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 36-11-49-400-001-A	Installation of the Mid Stage Tee Duct
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 70-51-00-230-001-A	Fluorescent-Penetrant Inspection-Portable Water-Washable
TASK 71-00-00-710-003-A	Engine Automatic Start
TASK 71-00-00-710-004-A	Engine Manual Start
TASK 71-00-00-710-028-A	Engine Shutdown
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
IP Bleed Check Valve
IP Bleed Check Valve
Duct Coupling Installation

3. Job Set-up
Subtask 36-11-41-860-054-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 (OFF legend is on)
Make sure that the APU BLEED pushbutton-switch is released (ON legend is off)
Make sure that the WARNING NOTICE(S) is in 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 in position to tell the 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) In the cockpit, on 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 36-11-41-010-059-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 36-11-41-040-053-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 36-11-41-110-053-A ** ON A/C NOT FOR ALL

A. Before installation
(1) Clean the surface of the seals (20) with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Methyl Alcohol - (Material No.08BBE1) .

Subtask 36-11-41-210-056-A ** ON A/C NOT FOR ALL

B. Visually examine the seals as follows:
(1) Examine the seal for signs of oxidation, carbon flakes and foreign substances left on the seal from contact with the mating flanges.
(2) Examine the surface and the edges of the seal for dents, pitting, cracks, scratches and distorsion.
(3) If you cannot remove any substance from the seals or if damage or distorsion exists, replace the seal.

Subtask 36-11-41-420-051-A ** ON A/C NOT FOR ALL

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 COUPLINGS INCORRECTLY. WHEN YOU INSTALL THIS TYPE OF COUPLING, MAKE SURE THE SLIDE PART OF THE COUPLING (WITH THE SADDLE WASHER) ENGAGES THE RECESS OF THE OTHER HALF OF THE COUPLING. IF THE COUPLING IS INSTALLED INCORRECTLY, IT CAN DISENGAGE AND CAUSE LARGE AIR LEAKS AND POSSIBLE DAMAGE.

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.

C. Installation of the IP Bleed Check Valve

Duct Coupling Installation ** ON A/C NOT FOR ALL

NOTE: If the tee duct (10) was removed, install the tee duct (10) (Ref. AMM TASK 36-11-49-400-001).

(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) Attach the links (50) and (55) to the tee duct (10) with the bolts (45), washers (40) and 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.

(4) Remove the PLUG-BLANKING from each disconnected line end.

PRE SPIB CFM92149MW1

(5) Put the IP bleed check valve (30) between the tee duct (10) and the elbow duct (15). Make sure that the flow arrow is on the outboard side and points up.

END OF PRE SPIB CFM92149MW1

POST SPIB CFM92149MW1

(6) Put the IP bleed check valve (30) between the tee duct (10) and the elbow duct (15). Make sure that the flow arrow is on the inboard side and points up.

END OF POST SPIB CFM92149MW1

(7) Attach the IP bleed check valve (30) and the AIPC 36-11-41-02-020 E-SEALS (20) to the duct with the couplings (25).
(8) TORQUE the nuts (35) to between 70 and 50 lbf.in (0.79 and 0.57 m.daN )

.
(9) Tighten all coupling nuts as follows:
(a) Tighten all coupling nuts to 50% of the torque value specified on the face of the couplings.
(b) Tap the external face of the coupling with a MALLET - RUBBER.
(c) TORQUE the couplings to 100% of the torque value specified on the face of the couplings.
(d) Tap the couplings again.
(e) Do this procedure again, then TORQUE to the specified value.

Subtask 36-11-41-480-050-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 Cleaner-Hydraulic Spillage Absorbent powder - (Material No.08CKB9) or dry developer (Material No.CP3010) (Ref. AMM TASK 70-51-00-230-001) around the pneumatic joints, only on the connections of the removed pneumatic components.

NOTE: Airbus recommends that you do not apply 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 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 36-11-41-410-060-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 door (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-41-440-053-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-41-720-052-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 36-11-41-040-057-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 36-11-41-010-064-A ** ON A/C NOT FOR ALL

I. Open the left thrust reverser doors (Ref. AMM TASK 78-36-00-010-040).
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 36-11-41-080-050-A ** ON A/C NOT FOR ALL

J. Make sure that there are no leaks downstream 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 36-11-41-410-055-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 36-11-41-440-050-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-41-410-056-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 36-11-41-862-052-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 12:38:20 UTC