Functional Test of the Opening of the Bleed-Pressure Regulator Valve (PRV) with the Bleed Test Set P/N 99127B03

TASK 36-11-52-720-010-A-02
Functional Test of the Opening of the Bleed-Pressure Regulator Valve (PRV) with the Bleed Test Set P/N 99127B03

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: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL
FIN: 4001HA ** 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	1	SUPPLY - 28 VDC, ELECTRICAL
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.80 and 0.65 m.daN (70.80 and 57.52 lbf.in )
No specific	Torque wrench: range to between 1.2 and 1 m.daN (106.19 and 88.50 lbf.in )
99127-231	1	TEST SET BLEED - KIT
99127B03	1	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 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground 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
Functional Test of the Opening of the Bleed-Pressure Regulator Valve (4001HA) with the Bleed-Test Set P/N 99127B03
Bleed-Pressure Regulator Valve

3. Job Set-up
Subtask 36-11-52-861-080-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-941-086-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 36-11-52-010-127-A ** ON A/C NOT FOR ALL

C. 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.

Subtask 36-11-52-040-095-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) Do the deactivation of the thrust-reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 36-11-52-010-128-A ** ON A/C NOT FOR ALL

E. Get Access
(1) Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.
(2) Open the access door 191MB.
(3) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position at the bleed-pressure regulator valve.

4. Procedure
Subtask 36-11-52-480-072-B ** ON A/C NOT FOR ALL

A. Installation of the Tool

Functional Test of the Opening of the Bleed-Pressure Regulator Valve (4001HA) with the Bleed-Test Set P/N 99127B03 ** ON A/C NOT FOR ALL

(1) Connect 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.

(2) Connect the 99127B03 BLEED TEST SET as shown in the figure and do the steps that follow:
(a) Use the 99127-231 TEST SET BLEED - KIT on the wing to do this test.
(b) 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 for 10 seconds.
(3) Connect the hose (T04) to the bleed-test set pressure-supply (9).
(4) Connect the hose (T05) to the bleed-test set pressure-reading (14).
(5) Connect the hoses (T04) and (T05) to "Y" adaptor (T06).
(6) Connect "Y" adaptor (T06) to the test port adaptor (T14) or (T25).

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.

(7) Cut, remove and discard the lockwire from the blanking cap of the test port of the PRV.
(8) Remove the blanking cap from the test port of the PRV.
(9) Install the test port adaptor (T14) or (T25) on the test port of the bleed-pressure regulator valve.
(10) Open the pressure-source shut-off valve to slowly pressurize the 99127B03 BLEED TEST SET to 100 psi (6.89 bar).

Subtask 36-11-52-720-070-A ** ON A/C NOT FOR ALL

B. Functional Test of the Bleed-Pressure Regulator Valve

Functional Test of the Opening of the Bleed-Pressure Regulator Valve (4001HA) with the Bleed-Test Set P/N 99127B03 ** ON A/C NOT FOR ALL

Bleed-Pressure Regulator Valve ** ON A/C NOT FOR ALL

(1) Do the test:

ACTION	RESULT
1.On the test set: Set the Blue valve (7) to ON.
2.On the test set: With pressure gauge A (3), increase the pressure to 29 psi (1.99 bar). NOTE: The pressure value given in this test is same for all the types of valves. But the opening pressure changes related to the type of the valve.	On the test set: On the LCD (5) you can see the pressure.
	On the bleed-pressure regulator valve: The visual position indicator shows that the valve is open.
3.In the cockpit, on AIR COND panel 30VU: Release the ENG 1(2) BLEED pushbutton-switch (the OFF legend comes on).	On the bleed-pressure regulator valve: The visual position indicator shows that the valve is closed.
4.In the cockpit, on AIR COND panel 30VU: Push the ENG 1(2) BLEED pushbutton-switch (OFF legend goes off).	On the bleed-pressure regulator valve: The visual position indicator shows that the valve is open.
5.On the test set: With pressure gauge A (3), decrease the pressure to 0 psi.	On the bleed-pressure regulator valve: The visual position indicator shows that the valve is closed.
6.On AIR COND panel 30VU: Release the ENG BLEED 1(2) pushbutton-switch (OFF legend comes on).

Subtask 36-11-52-080-072-B ** ON A/C NOT FOR ALL

C. Removal of the Tool

Functional Test of the Opening of the Bleed-Pressure Regulator Valve (4001HA) with the Bleed-Test Set P/N 99127B03 ** ON A/C NOT FOR ALL

(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 (T01) and the external SUPPLY - 28 VDC, ELECTRICAL.
(3) Remove the test port adaptor (T14) or (T25) from the test port of the bleed-pressure regulator valve.
(4) Install the blanking cap on the test port of the PRV.
(a) For PRV standard 6774B and 6714D:

TORQUE the blanking cap to between 1.2 and 1 m.daN (106.19 and 88.50 lbf.in ) .

(b) For PRV standard 6774E, 6774F and 6774G:

TORQUE the blanking cap to between 0.80 and 0.65 m.daN (70.80 and 57.52 lbf.in ) .

(5) Installation of the lockwire:

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

5. Close-up
Subtask 36-11-52-410-120-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 halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 36-11-52-440-086-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-410-121-A ** ON A/C NOT FOR ALL

C. 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 36-11-52-862-078-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 01:13:02 UTC