Functional Check of the Pressure Regulating Valve (PRV) Control-Solenoid (10HA1, 10HA2) Non-Return-Function with the HP ground cart and the Bleed Test Set P/N 99127B03

TASK 36-11-00-720-819-A
Functional Check of the Pressure Regulating Valve (PRV) Control-Solenoid (10HA1, 10HA2) Non-Return-Function with the HP ground cart and 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.

ZONE: 400

1. Reason for the Job

NOTE: Procedure given below is specified only for engine 2 bleed. The similar procedure is applicable on engine 1 bleed.

NOTE: Before you use the BLEED TEST SET and the TEST SET BLEED - KIT read the manufacturer's instructions.

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	2	GROUND AIR-SUPPLY UNIT(HIGH PRESSURE)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	2	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 0.6 and 0.4 m.daN (53.10 and 35.40 lbf.in )
98D27803000000	1	LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
99127-231	2	TEST SET BLEED - KIT
99127B03	3	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
400	POWER PLANT, NACELLES AND PYLONS
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 27-00-00-480-002-A	Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
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
TASK 36-11-00-720-010-A-01	Functional Test of the Sense Line between the Pressure Regulator Valve (PRV) and the PRV Control Solenoid with the 98L36103002000 and SBE2213
TASK 36-11-49-000-018-A	Removal of the Pneumatic Sense Lines in the Pylon
TASK 36-11-49-000-029-A	Removal of the Pneumatic Sense Lines in the Pylon
TASK 36-11-49-000-820-A	Removal of the Pneumatic Sense Lines in the Pylon
TASK 36-11-49-400-018-A	Installation of the Pneumatic Sense Lines in the Pylon
TASK 36-11-49-400-029-A	Installation of the Pneumatic Sense Lines in the Pylon
TASK 36-11-49-400-820-A	Installation of the Pneumatic Sense Lines in the Pylon
TASK 36-11-55-000-001-A	Removal of the Bleed-Pressure-Regulator Valve Control-Solenoid
TASK 36-11-55-400-001-A	Installation of the Bleed-Pressure-Regulator Valve Control-Solenoid
TASK 36-12-00-860-002-A	Pressurization of the Bleed System through the HP Ground Connector
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
Sense Line between the PRV and the PRV Control Solenoid - Location ** ON A/C NOT FOR ALL
PRV Control Solenoid (without Deactivation Screw on Regulator) with the Bleed Test Set P/N 99127B03
TEST SET BLEED - KIT (P/N 99127-231) to be used in conjuction with the Bleed Test Set (P/N 99127B03)
PRV Control Solenoid (with Deactivation Screw on Regulator) with the Bleed Test Set P/N 99127B03
Sense Line between the PRV and the PRV Control Solenoid - Location ** ON A/C NOT FOR ALL
FOR [1000EM1] (ENGINE-1)
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 78-32-00-010-010-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
FOR [1000EM2] (ENGINE-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 78-32-00-010-010-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

3. Job Set-up
Subtask 36-11-00-861-190-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-941-176-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) In the cockpit, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position.
(c) Put a WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.
(2) Make sure that both the engines are OFF.
(3) Make sure that engine 1 and engine 2 shutdown occurred atleast five minutes before you do this procedure.
(4) In the cockpit, on AIR COND panel 30VU:
(a) Make sure that the ENG 1 BLEED and ENG 2 BLEED pushbutton-switches are pushed (the OFF legends are on).
(b) Make sure that the APU BLEED pushbutton-switch is released (the ON legend is off).
(c) Make sure that the PACK 1 and PACK 2 pushbutton switches are released (the OFF legends are on).
(d) Make sure that the PACK FLOW selector-switch is set to LO.
(e) Set the X BLEED selector-switch to the OPEN position.
(f) Put the WARNING NOTICE(S) in position to tell persons not to operate the pneumatic system.
(5) In the cockpit, on FLAPS panel 114VU:
(a) Put a 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION in position on the flap/slat control lever (Ref. AMM TASK 27-00-00-480-002).
(b) Put the WARNING NOTICE(S) in position to tell persons not to operate the flap/slat controls.
(6) Connect the GROUND AIR-SUPPLY UNIT(HIGH PRESSURE) to the HP ground connector (7300HM).

Subtask 36-11-00-865-193-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20
FOR FIN: 1000EM2 (ENGINE2)
49VU	AIR BLEED/X FEED/VALVE/BAT	2HV	D13
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22

Subtask 36-11-00-010-245-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the fan cowl doors:
(a) FOR [1000EM1] (ENGINE-1)

437AL and 438AR (Ref. AMM TASK 71-13-00-010-040).

(b) FOR [1000EM2] (ENGINE-2)

447AL and 448AR (Ref. AMM TASK 71-13-00-010-040).

(2) Open access door 191MB.

Subtask 36-11-00-040-157-A ** ON A/C NOT FOR ALL

E. Deactivation of the Thrust Reverser (T/R)

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make the T/R unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).

Subtask 36-11-00-010-244-A ** ON A/C NOT FOR ALL

F. Open the T/R doors:
(1) FOR [1000EM1] (ENGINE-1)

451AL and 452AR (Ref. AMM TASK 78-36-00-010-040).

(2) FOR [1000EM2] (ENGINE-2)

461AL and 462AR (Ref. AMM TASK 78-36-00-010-040).

(3) Put an ACCESS PLATFORM 1M(3 FT) in position below the engine.

Subtask 36-11-00-010-245-B ** ON A/C NOT FOR ALL

G. Get Access
(1) Open the fan cowl doors:
(a) FOR [1000EM1] (ENGINE-1)

437AL and 438AR (Ref. AMM TASK 71-13-00-010-010).

(b) FOR [1000EM2] (ENGINE-2)

447AL and 448AR (Ref. AMM TASK 71-13-00-010-010).

(2) Open access door 191MB.

Subtask 36-11-00-040-157-B ** ON A/C NOT FOR ALL

H. Deactivation of the Thrust Reverser (T/R)

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 T/R Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 36-11-00-010-244-B ** ON A/C NOT FOR ALL

I. Open the T/R halves:
(1) FOR [1000EM1] (ENGINE-1)

451AL and 452AR (Ref. AMM TASK 78-32-00-010-010).

(2) FOR [1000EM2] (ENGINE-2)

461AL and 462AR (Ref. AMM TASK 78-32-00-010-010).

(3) Put an ACCESS PLATFORM 1M(3 FT) in position below the engine.

Subtask 36-11-00-010-245-D ** ON A/C NOT FOR ALL

J. Get Access
(1) Open the fan cowl doors:
(a) FOR [1000EM1] (ENGINE-1)

437AL and 438AR (Ref. AMM TASK 71-13-00-010-040).

(b) FOR [1000EM2] (ENGINE-2)

447AL and 448AR (Ref. AMM TASK 71-13-00-010-040).

(2) Open access door 191MB.

Subtask 36-11-00-040-157-D ** ON A/C NOT FOR ALL

K. Deactivation of the Thrust Reverser (T/R)

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make the T/R unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).

Subtask 36-11-00-010-244-D ** ON A/C NOT FOR ALL

L. Open the T/R doors:
(1) FOR [1000EM1] (ENGINE-1)

451AL and 452AR (Ref. AMM TASK 78-36-00-010-040).

(2) FOR [1000EM2] (ENGINE-2)

461AL and 462AR (Ref. AMM TASK 78-36-00-010-040).

(3) Put an ACCESS PLATFORM 1M(3 FT) in position below the engine.

4. Procedure
Subtask 36-11-00-480-158-A ** ON A/C NOT FOR ALL

A. Connection of the Test Set (with Deactivation Screw on Regulator)

PRV Control Solenoid (with Deactivation Screw on Regulator) with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL

(1) Connect the 99127B03 BLEED TEST SET (T01) to the sense line tester (T10):
(a) Use a 99127-231 TEST SET BLEED - KIT to do this test.
(b) Set the pressure gauge (5) to ON:
1 Make sure that the pressure value shown on the Liquid Crystal Display (LCD) screen is equal to 0 psi (0 bar).
2 If it is not equal to 0 psi (0 bar), push the ON button for 10 seconds.
(2) 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.

(3) On engine 2, remove 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 PRV.
(4) Remove the deactivation screw.

NOTE: If necessary, you can use a WRENCH 5/16 IN (8MM) - SPANNER.

(5) Connect 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 PRV with the adaptor (T15) or (T19).
(b) Apply force when you tighten the adaptor (T15) or (T19) with your hand.
(6) Connect the pressure source to the pressure supply port (T02) of the 99127B03 BLEED TEST SET (T01).
(7) Slowly pressurize the 99127B03 BLEED TEST SET (T01) to 30 psi (2.07 bar) with the pressure source shutoff-valve.

Subtask 36-11-00-480-157-A ** ON A/C NOT FOR ALL

B. Connection of the Test Set (without Deactivation Screw on Regulator)

PRV Control Solenoid (without Deactivation Screw on Regulator) with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL

Start the SUPPLY - 28 VDC, ELECTRICAL.

(3) On engine 2, remove the lockwire:

(a) Cut and discard the lockwire of the plug of the PRV.
(4) Remove the plug.

NOTE: If necessary, you can use a WRENCH 5/16 IN (8MM) - SPANNER.

(5) Connect the sense line tester:
(a) Connect the sense line tester (T10) to the PRV with the adaptor (T25) and the hose (T18).
(b) Apply force when you tighten the adaptor (T25) and the hose (T18) with your hand.
(6) Slowly depressurize the 99127B03 BLEED TEST SET (T01) with the pressure source shutoff-valve
(7) Connect the pressure source to the pressure supply port (T02) of the 99127B03 BLEED TEST SET (T01).
(8) Slowly pressurize the 99127B03 BLEED TEST SET (T01) to 30 psi (2.07 bar) with the pressure source shutoff-valve.

Subtask 36-11-00-720-115-A ** ON A/C NOT FOR ALL

C. Functional Test of the Sense Line between the PRV and the PRV control solenoid
(1) Make sure that there are no leaks on the sense line connected between the PRV and the PRV control solenoid (Ref. AMM TASK 36-11-00-720-010).

Subtask 36-11-00-720-114-A ** ON A/C NOT FOR ALL

D. Functional Check of the PRV Control-Solenoid Non-Return-Function
(1) Do the functional check:

ACTION	RESULT
1.On the PRV of engine 2: Disconnect the sense line between the PRV control solenoid and the pylon duct interface (sense line 2) (Ref. AMM TASK 36-11-49-000-029). Put the PLUG-BLANKING in each disconnected line end.
2.On the sense line tester (T10): Open valves 1 and 2.	On the sense line tester (T10): Put valve 1 to the ON position. Put valve 2 to the ON position.
3.On the 99127B03 BLEED TEST SET (T01): Set the blue valve (7) to ON.
4.On the 99127B03 BLEED TEST SET (T01): Slowly pressurize the system between 21 psi (1.45 bar) and 22 psi (1.52 bar) with the pressure gauge A (3).	On the 99127B03 BLEED TEST SET (T01): The pressure value shows on the LCD (5).
5.On the sense line tester (T10): Maintain the sense line tester (T10) in the low flow mode (close valve 1).	On the sense line tester: Put valve 1 to the OFF position. Put valve 2 to the ON position.
6.Pressurize the Bleed System through the HP Ground Connector (7300HM) GROUND AIR-SUPPLY UNIT(HIGH PRESSURE) (Ref. AMM TASK 36-12-00-860-002): Make sure that the supplied air pressure is between 40 psi (2.76 bar) and 45 psi (3.10 bar).
7.On the 99127B03 BLEED TEST SET (T01): Do a check of the pressure value of sense line 3 shown on the LCD (5).	On the 99127B03 BLEED TEST SET (T01): Make sure that the pressure value is less than or equal to 1.5 psi (0.10 bar), then go to step 8. If the pressure value is greater than 1.5 psi (0.10 bar), replace the PRV control solenoid (Ref. AMM TASK 36-11-55-000-001) and (Ref. AMM TASK 36-11-55-400-001). In such conditions, examine the installation of the 99127B03 BLEED TEST SET (T01) and do the procedure again carefully.
8.Stop the pressurization from the GROUND AIR-SUPPLY UNIT(HIGH PRESSURE).
9.Disconnect the GROUND AIR-SUPPLY UNIT(HIGH PRESSURE) to the HP ground connector (7300HM).
WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL. 10.On the PRV: Remove the PLUG-BLANKING from each disconnected line end. Connect the sense line between the PRV control solenoid and the pylon duct interface (sense line 2) (Ref. AMM TASK 36-11-49-400-029).

Subtask 36-11-00-720-114-B ** ON A/C NOT FOR ALL

D. Functional Check of the PRV Control-Solenoid Non-Return-Function
(1) Do the functional check:

ACTION	RESULT
1.On the PRV of engine 2: Disconnect the sense line between the PRV control solenoid and the pylon duct interface (sense line 2) (Ref. AMM TASK 36-11-49-000-018). Put the PLUG-BLANKING in each disconnected line end.
2.On the sense line tester (T10): Open valves 1 and 2.	On the sense line tester (T10): Put valve 1 to the ON position. Put valve 2 to the ON position.
3.On the 99127B03 BLEED TEST SET (T01): Set the blue valve (7) to ON.
4.On the 99127B03 BLEED TEST SET (T01): Slowly pressurize the system between 21 psi (1.45 bar) and 22 psi (1.52 bar) with the pressure gauge A (3).	On the 99127B03 BLEED TEST SET (T01): The pressure value shows on the LCD (5).
5.On the sense line tester (T10): Maintain the sense line tester (T10) in the low flow mode (close valve 1).	On the sense line tester: Put valve 1 to the OFF position. Put valve 2 to the ON position.
6.Pressurize the bleed system through the HP ground connector (7300HM) GROUND AIR-SUPPLY UNIT(HIGH PRESSURE) (Ref. AMM TASK 36-12-00-860-002): Make sure that the supplied air pressure is between 40 psi (2.76 bar) and 45 psi (3.10 bar).
7.On the 99127B03 BLEED TEST SET (T01): Do a check of the pressure value of sense line 3 shown on the LCD (5).	On the 99127B03 BLEED TEST SET (T01), If the pressure value is: Make sure that the pressure value is less than or equal to 1.5 psi (0.10 bar), then go to step 8. If the pressure value is greater than 1.5 psi (0.10 bar), replace the PRV control solenoid (Ref. AMM TASK 36-11-55-000-001) and (Ref. AMM TASK 36-11-55-400-001). In such conditions, examine the installation of the 99127B03 BLEED TEST SET (T01) and do the procedure again carefully.
8.Stop the pressurization from the GROUND AIR-SUPPLY UNIT(HIGH PRESSURE).
9.Disconnect the GROUND AIR-SUPPLY UNIT(HIGH PRESSURE) to the HP ground connector (7300HM).
WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL. 10.On the PRV: Remove the PLUG-BLANKING from each disconnected line end. Connect the sense line between the PRV control solenoid and the pylon duct interface (sense line 2) (Ref. AMM TASK 36-11-49-400-018).

Subtask 36-11-00-720-114-D ** ON A/C NOT FOR ALL

D. Functional Check of the PRV Control-Solenoid Non-Return-Function
(1) Do the functional check:

ACTION	RESULT
1.On the PRV of engine 2: Disconnect the sense line between the PRV control solenoid and the pylon duct interface (sense line 2) (Ref. AMM TASK 36-11-49-000-820). Put the PLUG-BLANKING in each disconnected line end.
2.On the sense line tester (T10): Open valves 1 and 2.	On the sense line tester (T10): Put valve 1 to the ON position. Put valve 2 to the ON position.
3.On the 99127B03 BLEED TEST SET (T01): Set the blue valve (7) to ON.
4.On the 99127B03 BLEED TEST SET (T01): Slowly pressurize the system between 21 psi (1.45 bar) and 22 psi (1.52 bar) with the pressure gauge A (3).	On the 99127B03 BLEED TEST SET (T01): The pressure value shows on the LCD (5).
5.On the sense line tester (T10): Maintain the sense line tester (T10) in the low flow mode (close valve 1).	On the sense line tester: Put valve 1 to the OFF position. Put valve 2 to the ON position.
6.Pressurize the bleed system through the HP ground connector (7300HM) GROUND AIR-SUPPLY UNIT(HIGH PRESSURE) (Ref. AMM TASK 36-12-00-860-002): Make sure that the supplied air pressure is between 40 psi (2.76 bar) and 45 psi (3.10 bar).
7.On the 99127B03 BLEED TEST SET (T01): Do a check of the pressure value of sense line 3 shown on the LCD (5).	On the 99127B03 BLEED TEST SET (T01), if the pressure value is: Make sure that the pressure value is less than or equal to 1.5 psi (0.10 bar), then go to step 8. If the pressure value is greater than 1.5 psi (0.10 bar), replace the PRV control solenoid (Ref. AMM TASK 36-11-55-000-001) and (Ref. AMM TASK 36-11-55-400-001). In such conditions, examine the installation of the 99127B03 BLEED TEST SET (T01) and do the procedure again carefully.
8.Stop the pressurization from the GROUND AIR-SUPPLY UNIT(HIGH PRESSURE).
9.Disconnect the GROUND AIR-SUPPLY UNIT(HIGH PRESSURE) to the HP ground connector (7300HM).
WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL. 10.On the PRV: Remove the PLUG-BLANKING from each disconnected line end. Connect the sense line between the PRV control solenoid and the pylon duct interface (sense line 2) (Ref. AMM TASK 36-11-49-400-820).

Subtask 36-11-00-080-135-A ** ON A/C NOT FOR ALL

E. Disconnection of the Test Set (with Deactivation Screw on Regulator)

PRV Control Solenoid (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 of the 99127B03 BLEED TEST SET to 0 psi (0.00 bar).
(2) Stop the SUPPLY - 28 VDC, ELECTRICAL.
(3) Disconnect 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 PRV.
(5) Install the deactivation screw:

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.

(a) Install the deactivation screw on the PRV.
(b) TORQUE the deactivation screw to between 0.6 and 0.4 m.daN (53.10 and 35.40 lbf.in )

Subtask 36-11-00-080-134-A ** ON A/C NOT FOR ALL

F. Disconnection of the Test Set (without Deactivation Screw on Regulator)

PRV Control Solenoid (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 of the 99127B03 BLEED TEST SET to 0 psi (0.00 bar).
(2) Stop the SUPPLY - 28 VDC, ELECTRICAL.
(3) Disconnect 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) and the hose (T18), the sense line tester (T10) and the 99127B03 BLEED TEST SET (T01) from the PRV.
(5) Install the plug:
(a) Install the plug on the PRV.

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

5. Close-up
Subtask 36-11-00-410-235-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) Remove the ACCESS PLATFORM 1M(3 FT).
(3) Close the T/R doors:
(a) FOR [1000EM1] (ENGINE-1)

451AL and 452AR (Ref. AMM TASK 78-36-00-410-040).

(b) FOR [1000EM2] (ENGINE-2)

461AL and 462AR (Ref. AMM TASK 78-36-00-410-040).

Subtask 36-11-00-440-146-A ** ON A/C NOT FOR ALL

B. Reactivation of the T/R
(1) Make the T/R serviceable after maintenance (Ref. AMM TASK 78-30-00-081-041).

Subtask 36-11-00-410-234-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors:
(a) FOR [1000EM1] (ENGINE-1)

437AL and 438AR (Ref. AMM TASK 71-13-00-410-040).

(b) FOR [1000EM2] (ENGINE-2)

447AL and 448AR (Ref. AMM TASK 71-13-00-410-040).

(2) Close access door 191MB.

Subtask 36-11-00-410-235-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) Remove the ACCESS PLATFORM 1M(3 FT).
(3) Close the T/R halves:
(a) FOR [1000EM1] (ENGINE-1)

451AL and 452AR (Ref. AMM TASK 78-32-00-410-010).

(b) FOR [1000EM2] (ENGINE-2)

461AL and 462AR (Ref. AMM TASK 78-32-00-410-010).

Subtask 36-11-00-440-146-B ** ON A/C NOT FOR ALL

E. Reactivation of the T/R
(1) Do the re-activation of the T/R HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 36-11-00-410-234-B ** ON A/C NOT FOR ALL

F. Close Access
(1) Close the fan cowls:
(a) FOR [1000EM1] (ENGINE-1)

437AL and 438AR (Ref. AMM TASK 71-13-00-410-010).

(b) FOR [1000EM2] (ENGINE-2)

447AL and 448AR (Ref. AMM TASK 71-13-00-410-010).

(2) Close access door 191MB.

Subtask 36-11-00-410-235-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) Remove the ACCESS PLATFORM 1M(3 FT).
(3) Close the T/R doors:
(a) FOR [1000EM1] (ENGINE-1)
451AL and 452AR (Ref. AMM TASK 78-36-00-410-040).
(b) FOR [1000EM2] (ENGINE-2)
461AL and 462AR (Ref. AMM TASK 78-36-00-410-040).

Subtask 36-11-00-440-146-D ** ON A/C NOT FOR ALL

H. Reactivation of the T/R
(1) Make the T/R serviceable after maintenance (Ref. AMM TASK 78-30-00-081-041).

Subtask 36-11-00-410-234-D ** ON A/C NOT FOR ALL

I. Close Access
(1) Close the fan cowl doors:
(a) FOR [1000EM1] (ENGINE-1)

437AL and 438AR (Ref. AMM TASK 71-13-00-410-040).

(b) FOR [1000EM2] (ENGINE-2)
447AL and 448AR (Ref. AMM TASK 71-13-00-410-040).
(2) Close access door 191MB.

Subtask 36-11-00-865-196-A ** ON A/C NOT FOR ALL

J. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20
FOR FIN: 1000EM2 (ENGINE2)
49VU	AIR BLEED/X FEED/VALVE/BAT	2HV	D13
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22

Subtask 36-11-00-862-169-A ** ON A/C NOT FOR ALL

K. Put the aircraft back to its initial configuration.
(1) Remove the WARNING NOTICE(S).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 01:07:23 UTC