Functional Test of the Bleed Regulated Pressure-Transducer with the Bleed Test Set P/N 99127B03

TASK 36-11-16-720-001-A-02
Functional Test of the Bleed Regulated Pressure-Transducer with the Bleed Test Set P/N 99127B03

FIN: 8HA1 ** ON A/C NOT FOR ALL
FIN: 8HA2 ** ON A/C NOT FOR ALL

1. Reason for the Job

NOTE: You can use bleed test set P/N 99127B04 as an alternative to bleed test set P/N 99127B03.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	PLUG - BLANKING
No specific	1	SUPPLY - 28 VDC, ELECTRICAL
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )
99127-231	1	TEST SET BLEED - KIT
99127B03	1	BLEED TEST SET

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [8HA1] (XDCR-BLEED REGULATED PRESS, ENG 1)
415AL, 415AR
FOR [8HA2] (XDCR-BLEED REGULATED PRESS, ENG 2)
425AL, 425AR

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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
Functional Test of the Bleed Regulated Pressure-Transducer with the Bleed Test Set P/N 99127B03

3. Job Set-up
Subtask 36-11-16-861-055-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-16-941-055-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(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) in position to tell persons not to operate the pneumatic system.

(3) On the ENG panel 115VU:

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

(4) On the HP ground connector:

Put a WARNING NOTICE(S) in position to tell persons not to pressurize the pneumatic system.

(5) On the ENG section of 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) in position to tell persons not to energize the FADEC 1(2).

Subtask 36-11-16-010-055-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position at the pylon access.
(2) Open the access doors:
(a) FOR [8HA1] (XDCR-BLEED REGULATED PRESS, ENG 1)
415AL 415AR
(b) FOR [8HA2] (XDCR-BLEED REGULATED PRESS, ENG 2)
425AL 425AR.

Subtask 36-11-16-020-052-A ** ON A/C NOT FOR ALL

D. Disconnection of the Sense Line

CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT THE PNEUMATIC LINES ON UNIONS.

(1) Disconnect the sense line from the bleed regulated pressure-transducer 8HA1(2).
(2) Put the PLUG-BLANKING in each disconnected line end.

Subtask 36-11-16-860-060-A ** ON A/C NOT FOR ALL

E. Aircraft Maintenance Configuration
(1) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).

4. Procedure
Subtask 36-11-16-480-050-A ** ON A/C NOT FOR ALL

A. Installation of the Tool
(1) Connection of the 99127B03 BLEED TEST SET

NOTE: Use the bleed test-set kit 99127-231 TEST SET BLEED - KIT to perform this test.

NOTE: Set the pressure gage (5) to ON. The pressure value given on the LCD screen must be equal to 0 psi. If it is not equal to 0 psi, push the ON button during 10 seconds.

(a) Connect the 28VDC electrical cord (T03) between the electrical inlet (11) of the 99127B03 BLEED TEST SET (T01) and an external SUPPLY - 28 VDC, ELECTRICAL:

Start the SUPPLY - 28 VDC, ELECTRICAL.

(b) Connect the test port adaptor (T25) to the union of the bleed regulated pressure-transducer.
(c) Connect the "Y" adaptor (T06) to the test port adaptor (T25).
(d) Connect the pneumatic hose (T04) between the "Y" adaptor (T06) and the test set connection (9).
(e) Connect the pneumatic hose (T05) between the "Y" adaptor (T06) and the test set connection (14).
(f) Open the primary pressure-source shutoff-valve to slowly pressurize the 99127B03 BLEED TEST SET to 100 psi (6.89 bar).

Subtask 36-11-16-720-052-A ** ON A/C NOT FOR ALL

B. Functional Test of the Bleed Regulated Pressure-Transducer
(1) Do the test that follows:

ACTION	RESULT
1.On the test set: Set the blue valve (7) to ON.
2.On the ECAM control panel: Push the BLEED key.	On the SD: The BLEED page comes into view and shows the pressure.
3.On the test set: Use the knob A (3) to increase the pressure to 90 psi (6.20 bar).	On the test set: The LCD (5) shows the pressure.
	On the SD: The BLEED page shows the supplied pressure which must agree with the value given on the LCD (5).
4.On the test set: Use the knob A (3) to decrease the pressure to 0 psi.	On the test set: The LCD (5) shows the pressure.

Subtask 36-11-16-080-050-A ** ON A/C NOT FOR ALL

C. Removal of the Tool
(1) Disconnection of the 99127B03 BLEED TEST SET
(a) Set the blue valve (7) to OFF.
(b) Close the primary pressure-source shutoff-valve to depressurize the 99127B03 BLEED TEST SET.
(c) Stop the SUPPLY - 28 VDC, ELECTRICAL.
(d) Disconnect the 28VDC electrical cord (T03) from the electrical inlet (11) of the 99127B03 BLEED TEST SET (T01) and the external SUPPLY - 28 VDC, ELECTRICAL.
(e) Disconnect the pneumatic hoses (T04) and (T05) from the test set connections (9) and (14).
(f) Disconnect the pneumatic hoses (T04) and (T05) from the "Y" adaptor (T06).
(g) Disconnect the "Y" adaptor (T06) from the test port adaptor (T25).
(h) Disconnect the test port adaptor (T25) from the union of the bleed regulated pressure-transducer.

5. Close-up
Subtask 36-11-16-420-053-A ** ON A/C NOT FOR ALL

A. Connection of the Sense Line

CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT THE PNEUMATIC LINES ON UNIONS.

(1) Remove the PLUG-BLANKING from each disconnected line end.
(2) Connect the sense line to the bleed regulated pressure-transducer 8HA1(2).
(3) TORQUE the nut of the sense line to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )

Subtask 36-11-16-942-053-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).

Subtask 36-11-16-410-054-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access doors:
(a) FOR [8HA1] (XDCR-BLEED REGULATED PRESS, ENG 1)
415AL 415AR
(b) FOR [8HA2] (XDCR-BLEED REGULATED PRESS, ENG 2)
425AL 425AR.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

Subtask 36-11-16-862-055-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 01:08:35 UTC