Functional Test of the Overpressure Valves with the Bleed Test Set P/N 99127B03

TASK 36-11-53-720-001-A-02
Functional Test of the Overpressure Valves with the Bleed Test Set P/N 99127B03

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

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

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL
FIN: 5HA1 ** ON A/C NOT FOR ALL
FIN: 5HA2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Refer to the MPD TASK: 361100-01
FUNCTIONAL CHECK OF OVERPRESSURE VALVE

NOTE: For the test of the engine bleed-air system, Airbus recommends to use bleed test set P/N 98L36103002000 for more accuracy.

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 1M(3 FT)
No specific	1	OHMMETER MULTIRANGE
No specific	1	SUPPLY - 28 VDC, ELECTRICAL
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.75 and 0.65 m.daN (66.37 and 57.52 lbf.in )
99127-231	1	TEST SET BLEED - KIT
99127B03	1	BLEED TEST SET

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03PBB1)	Lubricant-Anti Seize High Temp. -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
191MB
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
461AL, 462AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. 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 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for 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
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
Functional Test of the Overpressure Valve (P/N 6740E010000, 6740F010000, 6740G010000) with the Bleed Test Set P/N 99127B03
Functional Test of the Overpressure Valve (P/N 6740B01, 6740B03, 6740B05) with the Bleed Test Set P/N 99127B03

3. Job Set-up
Subtask 36-11-53-861-056-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-53-941-057-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 pushed (the OFF legend is off).
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 36-11-53-010-062-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Open the access door 191MB.
(3) Put the ACCESS PLATFORM 1M(3 FT) in position below the applicable engine.

Subtask 36-11-53-040-056-A ** ON A/C NOT FOR ALL

D. Deactivation of the Thrust Reverser

WARNING: MAKE SURE THAT THE THRUST REVERSER IS LOCKED. IF NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE REVERSER.

(1) Make the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).

Subtask 36-11-53-010-063-A ** ON A/C NOT FOR ALL

E. Open the 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 36-11-53-010-062-B ** ON A/C NOT FOR ALL

F. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Open the access door 191MB.
(3) Put the ACCESS PLATFORM 1M(3 FT) in position below the applicable engine.

Subtask 36-11-53-040-056-B ** ON A/C NOT FOR ALL

G. Deactivation of the Thrust Reverser

WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Do the deactivation of the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 36-11-53-010-063-B ** ON A/C NOT FOR ALL

H. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 36-11-53-010-062-D ** ON A/C NOT FOR ALL

I. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Open the access door 191MB.
(3) Put the ACCESS PLATFORM 1M(3 FT) in position below the applicable engine.

Subtask 36-11-53-040-056-D ** ON A/C NOT FOR ALL

J. Deactivation of the Thrust Reverser

WARNING: MAKE SURE THAT THE THRUST REVERSER IS LOCKED. IF NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE REVERSER.

(1) Make the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).

Subtask 36-11-53-010-063-D ** ON A/C NOT FOR ALL

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

4. Procedure
Subtask 36-11-53-480-055-A ** ON A/C NOT FOR ALL

A. Installation of the Tool
(1) Connect the 99127B03 BLEED TEST SET as shown in the figure.
(2) Use a small axle to operate the test port inlet-clapper for several cycles to remove the clapper.

NOTE: You can use all the applicable axles when:

It is not necessary to apply force to put them into the test port, as the diameter of the test port is lower than 5 MM (0.197 IN.) (to prevent damage to the port) and
There is no sharp edge (to prevent damage to the clapper).

(3) Use the test set kit on the wing 99127-231 TEST SET BLEED - KIT to perform this test.
(4) Set the pressure gage (5) to the ON position. The pressure value given on the LCD screen must be:

Equal to 0 psi (0 bar)
If not, push the ON button for 10 seconds.

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

Start the SUPPLY - 28 VDC, ELECTRICAL.

(6) Cut and discard the lockwire.
(7) Remove the blanking plug from the test port of the overpressure valve.
(8) Install the test port adaptor (T25) on the test port of the overpressure valve.
(9) Open the pressure-source shutoff valve to slowly pressurize the 99127B03 BLEED TEST SET to 100 psig (6.89 bar rel.).

Subtask 36-11-53-720-075-A ** ON A/C NOT FOR ALL

B. Functional Test of the Overpressure Valve

NOTE: The pressure value given in this test is applicable only to P/N 6740B05XXXX. Because the valves are interchangeable, it is necessary to do a check of the valve reference before the test. If the P/N reference is different from P/N 6740B05XXXX, refer to Para. C, D, E, F or G.

(1) Do this test:

ACTION	RESULT
1.On the test set: Set the Blue valve (7) to the ON position.
2.When you do the functional test for first time, apply a higher pressure than 110 psi (7.58 bar) to remove the clapper.
3.On the test set: With the pressure gauge A (3), increase the pressure to 79.18 psig (5.46 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is open.
4.On the overpressure valve: do a check of the electrical continuity between pin 1 and pin 2 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 1 and pin 2 of the electrical connector. NOTE: Electrical continuity between pin 1 and pin 2 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (OPEN).
5.On the test set: With the pressure gauge A (3), increase the pressure between 81 psig (5.58 bar rel.) and to 85 psig (5.86 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is closed.
6.On the overpressure valve: do a check of the electrical continuity between pin 2 and pin 3 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 2 and pin 3 of the electrical connector. NOTE: Electrical continuity between pin 2 and pin 3 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (CLOSED).
7.On the test set: With the pressure gauge A (3), decrease the pressure to 60.1 psig (4.14 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is closed.
8.On the test set: With the pressure gauge A (3), decrease the pressure to 50 psig (3.45 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is open.
9.On the test set: With the pressure gauge A (3), decrease the pressure to 0 psig (0.00 bar rel.).

Subtask 36-11-53-720-076-A ** ON A/C NOT FOR ALL

C. Functional Test of the Overpressure Valve

NOTE: The pressure value given in this test is applicable only to P/N 6740E01XXXX. Because the valves are interchangeable, it is necessary to do a check of the valve reference before the test. If the P/N reference is different from P/N 6740E01XXXX, refer to Para. B, D, E, F or G.

(1) Do this test:

ACTION	RESULT
1.On the test set: Set the Blue valve (7) to the ON position.
2.When you do the functional test for first time, apply a higher pressure than 110 psi (7.58 bar) to remove the clapper.
3.On the test set: With the pressure gauge A (3), increase the pressure to 79.18 psig (5.46 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is open.
4.On the overpressure valve: do a check of the electrical continuity between pin 1 and pin 2 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 1 and pin 2 of the electrical connector. NOTE: Electrical continuity between pin 1 and pin 2 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (OPEN).
5.On the test set: With the pressure gauge A (3), increase the pressure between 81 psig (5.58 bar rel.) and 85 psig (5.86 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is closed.
6.On the overpressure valve: do a check of the electrical continuity between pin 2 and pin 3 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 2 and pin 3 of the electrical connector. NOTE: Electrical continuity between pin 2 and pin 3 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (CLOSED).
7.On the test set: With the pressure gauge A (3), decrease the pressure to 60.1 psig (4.14 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is closed.
8.On the test set: With the pressure gauge A (3), decrease the pressure between 20 psig (1.38 bar rel.) and 57.20 psig (3.94 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is open.
9.On the test set: With the pressure gauge A (3), decrease the pressure to 0 psig (0.00 bar rel.).

Subtask 36-11-53-720-077-A ** ON A/C NOT FOR ALL

D. Functional Test of the Overpressure Valve

NOTE: The pressure value given in this test is applicable only to P/N 6740F01XXXX. Because the valves are interchangeable, it is necessary to do a check of the valve reference before the test. If the P/N reference is different from P/N 6740F01XXXX, refer to Para. B, C, E, F or G.

(1) Do this test:

ACTION	RESULT
1.On the test set: Set the Blue valve (7) to the ON position.
2.When you do the functional test for first time, apply a higher pressure than 110 psi (7.58 bar) to remove the clapper.
3.On the test set: With the pressure gauge A (3), increase the pressure to 79.18 psig (5.46 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is open.
4.On the overpressure valve: do a check of the electrical continuity between pin 1 and pin 2 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 1 and pin 2 of the electrical connector. NOTE: Electrical continuity between pin 1 and pin 2 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (OPEN).
5.On the test set: With the pressure gauge A (3), increase the pressure between 81 psig (5.58 bar rel.) and 85 psig (5.86 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is closed.
6.On the overpressure valve: do a cehck of the electrical continuity between pin 2 and pin 3 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 2 and pin 3 of the electrical connector. NOTE: Electrical continuity between pin 2 and pin 3 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (CLOSED).
7.On the test set: With the pressure gauge A (3), decrease the pressure to 60.1 psig (4.14 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is closed.
8.On the test set: With the pressure gauge A (3), decrease the pressure between 56 psig (3.86 bar rel.) and 29 psig (2.00 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is open.
9.On the test set: With the pressure gauge A (3), decrease the pressure to 0 psig (0.00 bar rel.).

Subtask 36-11-53-720-078-A ** ON A/C NOT FOR ALL

E. Functional Test of the Overpressure Valve

NOTE: The pressure value given in this test is applicable only to P/N 6740B01XXXX. Because the valves are interchangeable, it is necessary to do a check of the valve reference before the test. If the P/N reference is different from P/N 6740B01XXXX, refer to Para. B, C, D, F or G.

(1) Do this test:

ACTION	RESULT
1.On the test set: Set the Blue valve (7) to the ON position.
2.When you do the functional test for first time, apply a higher pressure than 110 psi (7.58 bar) to remove the clapper.
3.On the test set: With the pressure gauge A (3), increase the pressure to 79.18 psig (5.46 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is open.
4.On the overpressure valve: do a check of the electrical continuity between pin 1 and pin 2 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 1 and pin 2 of the electrical connector. NOTE: Electrical continuity between pin 1 and pin 2 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (OPEN).
5.On the test set: With the pressure gauge A (3), increase the pressure between 81 psig (5.58 bar rel.) and 85 psig (5.86 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is closed.
6.On the overpressure valve: do a check of the electrical continuity between pin 2 and pin 3 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 2 and pin 3 of the electrical connector. NOTE: Electrical continuity between pin 2 and pin 3 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (CLOSED).
7.On the test set: With the pressure gauge A (3), decrease the pressure to 60.1 psig (4.14 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is closed.
8.On the test set: With the pressure gauge A (3), decrease the pressure less than 34.95 psig (2.41 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is open.
9.On the test set: With the pressure gauge A (3), decrease the pressure to 0 psig (0.00 bar rel.).

Subtask 36-11-53-720-079-A ** ON A/C NOT FOR ALL

F. Functional Test of the Overpressure Valve

NOTE: The pressure value given in this test is applicable only to P/N 6740B03XXXX. Because the valves are interchangeable, it is necessary to do a check of the valve reference before the test. If the P/N reference is different from P/N 6740B03XXXX, refer to Para. B, C, D, E or G.

(1) Do this test:

ACTION	RESULT
1.On the test set: Set the Blue valve (7) to the ON position.
2.When you do the functional test for first time, apply a higher pressure than 110 psi (7.58 bar) to remove the clapper.
3.On the test set: With the pressure gauge A (3), increase the pressure to 79.18 psig (5.46 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is open.
4.On the overpressure valve: do a check of the electrical continuity between pin 1 and pin 2 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 1 and pin 2 of the electrical connector. NOTE: Electrical continuity between pin 1 and pin 2 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (OPEN).
5.On the test set: With the pressure gauge A (3), increase the pressure between 84.13 (5.80 bar rel.) and 89.92 psig (6.20 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is closed.
6.On the overpressure valve: do a check of the electrical continuity between pin 2 and pin 3 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 2 and pin 3 of the electrical connector. NOTE: Electrical continuity between pin 2 and pin 3 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (CLOSED).
7.On the test set: With the pressure gauge A (3), decrease the pressure to 60.1 psig (4.14 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is closed.
8.On the test set: With the pressure gauge A (3), decrease the pressure less than 34.95 psig (2.41 bar rel.).	On the test set: The pressure is given on the LCD (5).
	On the overpressure valve: The visual position indicator shows that the valve is open.
9.On the test set: With the pressure gauge A (3), decrease the pressure to 0 psig (0.00 bar rel.).

Subtask 36-11-53-720-087-A ** ON A/C NOT FOR ALL

G. Functional Test of the Overpressure Valve

NOTE: The pressure value given in this test is applicable only to P/N 6740G010000. Because the valves are interchangeable, it is necessary to do a check of the valve reference before the test. If the P/N reference is different from P/N 6740G010000, refer to Para. B, C, D, E or F.

(1) Do this test:

ACTION	RESULT
1.On the test set: Set the Blue valve (7) to the ON position.
2.When you do the functional test for the first time, apply a pressure of more than 110 psi (7.58 bar) to take off the clapper.
3.On the test set: With pressure gauge A (3), increase the pressure of the system to 79.18 psig (5.46 bar rel.).	On the test set: The pressure is given on the LCD (5). On the overpressure valve: The visual position indicator shows that the valve is open.
4.On the overpressure valve: Do a check of the electrical continuity between pin 1 and pin 2 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 1 and pin 2 of the electrical connector. NOTE: The electrical continuity between pin 1 and pin 2 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (OPEN).
5.On the test set: With pressure gauge A (3), gradually increase the pressure of the system to 95 psig (6.55 bar rel.).	On the test set: The pressure is given on the LCD (5). On the overpressure valve: The visual position indicator shows that the valve is fully closed when the pressure is between 80 psig (5.52 bar rel.) and 89.2 psig (6.15 bar rel.).
6.On the overpressure valve: Do a check of the electrical continuity between pin 2 and pin 3 of the electrical connector with an OHMMETER MULTIRANGE.	On the OHMMETER MULTIRANGE: There is electrical continuity between pin 2 and pin 3 of the electrical connector. NOTE: The electrical continuity between pin 2 and pin 3 of the electrical connector shows that the overpressure valve position agrees with the microswitch position (CLOSED).
7.On the test set: With the pressure gauge A (3), gradually decrease the pressure of the system.	On the test set: The pressure is given on the LCD (5). On the overpressure valve: The visual position indicator shows that the valve is fully open when the pressure is between 50 psig (3.45 bar rel.) and 70 psig (4.83 bar rel.).
8.On the test set: With the pressure gauge A (3), decrease the pressure to 0 psig (0.00 bar rel.).

Subtask 36-11-53-080-052-A ** ON A/C NOT FOR ALL

H. Removal of the Tool
(1) Stop the SUPPLY - 28 VDC, ELECTRICAL.
(2) Disconnect the 28VDC electrical cord (T03) from the electrical inlet (11) of the 99127B03 BLEED TEST SET and the external SUPPLY - 28 VDC, ELECTRICAL.
(3) Remove the test port adaptor (T25) from the test port of the overpressure valve.
(4) Lubricate the test port plug:

For the valve standard 6740B: do not lubricate.
For the valve standard 6740E: do not lubricate.
For the valve standard 6740F: lubricate with Lubricant-Anti Seize High Temp. - (Material No.03PBB1) .
For the valve standard 6740G: do not lubricate.

(5) Install the test port plug on the test port of the overpressure valve.
(6) Torque the plug:

For the valve standard 6740B, TORQUE the plug to between 0.75 and 0.65 m.daN (66.37 and 57.52 lbf.in ) .
For the valve standard 6740E, TORQUE the plug to between 0.75 and 0.65 m.daN (66.37 and 57.52 lbf.in ) .
For the valve standard 6740F, TORQUE the plug to between 0.75 and 0.65 m.daN (66.37 and 57.52 lbf.in ) .
For the valve standard 6740G, TORQUE the plug to between 0.75 and 0.65 m.daN (66.37 and 57.52 lbf.in ) .

(7) Safety the blanking plug with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

5. Close-up
Subtask 36-11-53-410-058-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)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 36-11-53-440-054-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-53-410-059-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) Close the access door 191MB.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

Subtask 36-11-53-410-058-B ** ON A/C NOT FOR ALL

D. 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.

Subtask 36-11-53-440-054-B ** ON A/C NOT FOR ALL

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

Subtask 36-11-53-410-059-B ** ON A/C NOT FOR ALL

F. 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) Close the access door 191MB.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

Subtask 36-11-53-410-058-D ** ON A/C NOT FOR ALL

G. 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.

Subtask 36-11-53-440-054-D ** ON A/C NOT FOR ALL

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

Subtask 36-11-53-410-059-D ** ON A/C NOT FOR ALL

I. 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) Close the access door 191MB.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

Subtask 36-11-53-862-054-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 01:13:24 UTC