Functional Test of the Sense Line between the Pressure Regulator Valve and the Pressure-Regulator Valve Control-Solenoid with the Bleed Test Set P/N 99127B03

TASK 36-11-00-720-010-A
Functional Test of the Sense Line between the Pressure Regulator Valve and the Pressure-Regulator Valve Control-Solenoid 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.

FIN: 10HA1 ** ON A/C NOT FOR ALL
FIN: 10HA2 ** ON A/C NOT FOR ALL
FIN: 4001HA ** ON A/C NOT FOR ALL

1. Reason for the Job
To make sure that there are no leaks on the sense line Connected between the Pressure-Regulator Valve and the Pressure-Regulator Valve Control-Solenoid.

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	SUPPLY - 28 VDC, ELECTRICAL
No specific	AR	WARNING NOTICE(S)
No specific	AR	WRENCH 5/16 IN (8MM) - SPANNER
No specific	Torque wrench: range to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in )
No specific	Torque wrench: range to between 1.1 and 0.9 m.daN (97.35 and 79.65 lbf.in )
99127-231	2	TEST SET BLEED - KIT
99127B03	2	BLEED TEST SET

B. Consumable Materials

REFERENCE	DESIGNATION
(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
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
Sense Line between the Bleed-Pressure Regulator Valve and the Pressure-Regulator Valve Control-Solenoid - Location ** ON A/C NOT FOR ALL
Connection of the Bleed-Pressure Regulator Valve (with Deactivation Screw on Regulator) with the Bleed test Set P/N 99127B03
Connection of the Bleed-Pressure Regulator Valve (without Deactivation Screw on Regulator) with the Bleed Test Set P/N 99127B03
Sense Line between the Bleed-Pressure Regulator Valve and the Pressure-Regulator Valve Control-Solenoid - Location ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 36-11-00-861-087-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-941-100-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 36-11-00-010-093-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 engine.

Subtask 36-11-00-040-067-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-010-094-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 36-11-00-010-093-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 engine.

Subtask 36-11-00-040-067-B ** ON A/C NOT FOR ALL

G. Deactivation of the Thrust Reverser

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

Subtask 36-11-00-010-094-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 36-11-00-010-093-C ** 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 engine.

Subtask 36-11-00-040-067-C ** ON A/C NOT FOR ALL

J. Deactivation of the Thrust Reverser

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

Subtask 36-11-00-010-094-C ** 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 [1000EM2] (ENGINE-2)
461AL 462AR.

4. Procedure
Subtask 36-11-00-480-055-A ** ON A/C NOT FOR ALL

A. Installation of the Tool (Bleed-Pressure Regulator Valve with Deactivation Screw on Regulator)
(1) Connect the 99127B03 BLEED TEST SET (T01) to the sense line tester (T10) as shown in the figure.

Connection of the Bleed-Pressure Regulator Valve (with Deactivation Screw on Regulator) with the Bleed test Set P/N 99127B03 ** ON A/C NOT FOR ALL

NOTE: Use the 99127-231 TEST SET BLEED - KIT to do this test.

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

(2) 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.

(3) Removal of the lockwire:

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.

(a) Cut and discard the lockwire of the deactivation screw of the bleed-pressure regulator valve.
(4) Remove the deactivation screw.

NOTE: Use a WRENCH 5/16 IN (8MM) - SPANNER if necessary.

(5) Connection of the sense line tester:

CAUTION: FIRST TRY TO INSTALL THE ADAPTOR WITH THE SHORTEST THREADED AREA (T15). IF YOU CANNOT INSTALL IT, INSTALL THE OTHER ADAPTOR (T19). MAKE SURE THAT THE ADAPTOR (T15 OR T19) IS CORRECTLY TIGHTENED.

(a) Connect the sense line tester (T10) to the bleed-pressure regulator valve with the adaptor (T15) or (T19).
(b) Apply force when you tighten the adaptor (T15) or (T19) with your hand.
(6) Open the pressure-source shut-off valve slowly and pressurize the 99127B03 BLEED TEST SET (T01) to 30 psi (2.07 bar).

Subtask 36-11-00-480-059-A ** ON A/C NOT FOR ALL

B. Installation of the Tool (Bleed-Pressure Regulator Valve without Deactivation Screw on Regulator)
(1) Connect the 99127B03 BLEED TEST SET (T01) to the sense line tester (T10) as shown in the figure.

Connection of the Bleed-Pressure Regulator Valve (without Deactivation Screw on Regulator) with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL

NOTE: Use the 99127-231 TEST SET BLEED - KIT to do this test.

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

(2) 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.

(3) Removal of the lockwire:

(a) Cut and discard the lockwire of the plug of the bleed-pressure regulator valve.
(4) Remove the plug from the bleed-pressure regulator valve.
(5) Connection of the sense line tester:
(a) Connect the sense line tester (T10) to the bleed-pressure regulator valve with the adaptor (T25) and hose (T18).
(b) TORQUE the union of the adaptor (T25) to between 1.1 and 0.9 m.daN (97.35 and 79.65 lbf.in )

.
(6) Open the pressure-source shut-off valve slowly and pressurize the 99127B03 BLEED TEST SET (T01) to 30 psi (2.07 bar).

Subtask 36-11-00-720-060-A ** ON A/C NOT FOR ALL

C. Test

ACTION	RESULT
1.On the sense line tester: Open the valves 1 and 2.	On the sense line tester: The two valves are aligned with the pneumatic ducts.
2.On the test set: Set the Blue valve (7) to ON.
3.On the test set: With the pressure gauge A (3), increase the pressure to between 21 and 22 psi (1.45 and 1.52 bar).	On the test set: The pressure value shows on the LCD (5).
4.On the sense line tester: Close the valve 1.	On the sense line tester: The valve 1 is not aligned with the pneumatic duct.
5.On the test set: Do a check of the pressure value shown on the LCD (5).	On the test set: The pressure is more or equal to 9.6 psi (0.66 bar).

Subtask 36-11-00-080-053-A ** ON A/C NOT FOR ALL

D. Removal of the Tool (Bleed-Pressure Regulator Valve with Deactivation Screw on Regulator)

Connection of the Bleed-Pressure Regulator Valve (with Deactivation Screw on Regulator) with the Bleed test Set P/N 99127B03 ** ON A/C NOT FOR ALL

(1) With the pressure gauge A (3), decrease the pressure to 0 psi (0 bar).
(2) Stop the SUPPLY - 28 VDC, ELECTRICAL.
(3) 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.
(4) Disconnect and remove the adaptor (T15) or (T19), the sense line tester (T10) and the 99127B03 BLEED TEST SET (T01) from the bleed-pressure regulator valve.

CAUTION: WHEN YOU INSTALL THE DEACTIVATION SCREW ON THE VALVE, TIGHTEN THE SCREW WITH YOUR HAND BEFORE YOU TORQUE IT. IF YOU DO NOT OBEY THIS PRECAUTION, YOU CAN CAUSE DAMAGE TO THE SCREW AND THE VALVE.

CAUTION: BEFORE YOU INSTALL THE DEACTIVATION SCREW, MAKE SURE THAT THE PREFORMED PACKING IS INSTALLED ON THE DEACTIVATION SCREW.

(5) Installation of the deactivation screw:

NOTE: If the adaptor (T19) is installed, the deactivation screw is equipped with a preformed packing.

(a) Install the deactivation screw on the bleed-pressure regulator valve.
(b) TORQUE the deactivation screw to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in )

.
(c) Safety the deactivation screw on its support with lockwire 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

Subtask 36-11-00-080-057-A ** ON A/C NOT FOR ALL

E. Removal of the Tool (Bleed-Pressure Regulator Valve without Deactivation Screw on Regulator)

Connection of the Bleed-Pressure Regulator Valve (without Deactivation Screw on Regulator) with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL

(1) With the pressure gauge A (3), decrease the pressure to 0 psi (0 bar).
(2) Stop the SUPPLY - 28 VDC, ELECTRICAL.
(3) 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.
(4) Disconnect and remove the adaptor (T25), the hose (T18), the sense line tester (T10) and the 99127B03 BLEED TEST SET (T01) from the bleed-pressure regulator valve.
(5) Install the plug on the bleed-pressure regulator valve.
(6) Safety with lockwire:

(a) Safety the plug on its support with lockwire 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

5. Close-up
Subtask 36-11-00-410-092-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.

Subtask 36-11-00-440-067-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-410-093-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 36-11-00-410-092-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 36-11-00-440-067-B ** ON A/C NOT FOR ALL

E. Do the re-activation of the thrust reverser HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 36-11-00-410-093-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 WARNING NOTICE(S).
(4) Remove the access platform(s).

Subtask 36-11-00-410-092-C ** 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 36-11-00-440-067-C ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-410-093-C ** 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 36-11-00-862-082-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 01:07:01 UTC