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

TASK 36-11-52-720-001-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

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	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
447AL, 448AR
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 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-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 Opening of the Bleed Pressure Regulator-Valve (4001HA) with Bleed Test Set P/N 99127B03

3. Job Set-up
Subtask 36-11-52-861-075-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-941-081-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 36-11-52-010-117-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-040-090-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 36-11-52-010-118-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 36-11-52-010-117-B ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-040-090-B ** ON A/C NOT FOR ALL

G. 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 36-11-52-010-118-B ** ON A/C NOT FOR ALL

H. 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 36-11-52-480-067-A ** ON A/C NOT FOR ALL

A. Installation of the Tool
(1) 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 (0 bar). If it is not equal to 0 psi (0 bar)i, push the ON button for 10 seconds.
(2) Connect the hose (T04) to the bleed-test set pressure-supply (9).
(3) Connect the hose (T05) to the bleed-test set pressure-reading (14).
(4) Connect the hoses (T04) and (T05) to "Y" adaptor (T06).
(5) Connect "Y" adaptor (T06) to the test port adaptor (T14) or (T25).
(6) 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.

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 (6.8948 bar).

Subtask 36-11-52-720-065-A ** ON A/C NOT FOR ALL

B. Functional Test of the Bleed-Pressure Regulator Valve
(1) Do this test:

ACTION	RESULT
1.On the test set: Set the Blue valve (7) to ON.
2.On the test set: With the pressure gauge A (3), increase the pressure to 29 +/- 1 psi (2 +/- 0.07 bar). NOTE: The pressure value given in this test is applicable to all the types of valves. But the opening pressure can change with the reference of the valve.	On the test set: The pressure is given on the LCD (5).
	On the bleed-pressure regulator valve: The visual position indicator shows that the valve is open.
3.In the cockpit, on the AIR COND panel 30VU: Release the ENG 1(2) BLEED pushbutton switch (the OFF legend is on).	On the bleed-pressure regulator valve: The visual position indicator shows that the valve is closed.
4.In the cockpit, on the AIR COND panel 30VU: Push the ENG 1(2) BLEED pushbutton switch (the OFF legend is off).	On the bleed-pressure regulator valve: The visual position indicator shows that the valve is open.
5.On the test set: With the 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 the AIR COND panel 30VU: Release the ENG BLEED 1(2) pushbutton switch (the OFF legend comes on).

Subtask 36-11-52-080-067-A ** ON A/C NOT FOR ALL

C. Removal of the Tool
(1) Stop the SUPPLY - 28 VDC, ELECTRICAL.
(2) Disconnect 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) Disconnect "Y" adaptor (T06) from the test port adaptor (T14) or (T25).
(5) Disconnect the hoses (T04) and (T05) from "Y" adaptor (T06).
(6) Disconnect the hose (T05) from the bleed-test set pressure-reading (14).
(7) Disconnect the hose (T04) from the bleed-test set pressure-supply (9).
(8) Install the blanking cap on the test port of the PRV as follows:
(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 ) .

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

5. Close-up
Subtask 36-11-52-410-110-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 36-11-52-440-081-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-410-111-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 [1000EM1] (ENGINE-1)
447AL 448AR.
(2) Close the access door 191MB.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

Subtask 36-11-52-410-110-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 doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 36-11-52-440-081-B ** ON A/C NOT FOR ALL

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

Subtask 36-11-52-410-111-B ** ON A/C NOT FOR ALL

F. 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 36-11-52-862-073-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 01:12:53 UTC