W DOC AIRBUS | AMM A320F

Health Check Procedure - Temperature Control Function

TASK 36-11-00-720-802-A
Health Check Procedure - Temperature Control Function

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.
NOTE: In the health check procedures the electrical harness is in correct operating condition.
1. Reason for the Job
The Bleed Health Check procedure has a set of steps to do in order to check preventively the three primary functions of the EBAS. The initial recommended maintenance interval is every 20 months. However, as the ageing effects on EBAS equipment are linked to local parameters and operating environment, Airbus recommends to customize this interval based on operators own experience.
The temperature control function contains the Fan Air Valve (FAV) 9HA1 (9HA2), the FAV control thermostat 7170HM and the sense line that connects them.
The Bleed Health Check procedures contain a flow chart that should be used for guidance. This flow chart gives a visual idea of the procedure.
The operator can remove the components that have a drift, as given in the applicable flow chart, immediately or at the next maintenance unless there is an EWD message and the source of the CLASS1 failure is the component that has the drift. In this condition, you must refer to the MMEL/TSM for the aircraft dispatch.
The operator can remove the components that have a drift, as given in the applicable flow chart, immediately or at the next maintenance unless there is an EWD message and the source of the CLASS1 failure is the component that has the drift. In this condition, you must refer to the MMEL/TSM for the aircraft dispatch.
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
AIR SOURCE - REGULATED, FILTERED, DRY
No specific
1
SUPPLY - 28 VDC, ELECTRICAL
No specific
AR
WARNING NOTICE(S)
No specific
1
WRENCH - SPANNER
No specific
Torque wrench: range to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in ) T
No specific
Torque wrench: range to between 2.5 and 0.8 m.daN (221.24 and 70.80 lbf.in ) T
99127-231
1
TEST SET BLEED - KIT
 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 36-11-00-720-012-A
Functional Test of the Sense Line Connected between the Fan-Air Valve Control-Thermostat and the Fan Air Valve (FAV) with the Bleed Test Set P/N 99127B03
TASK 36-11-00-720-012-A-01
Functional Test of the Sense Line Connected between the Fan-Air Valve Control-Thermostat and the Fan Air Valve (FAV) with 98L36103002000 and SBE2213
TASK 36-11-43-000-001-A
Removal of the Fan-Air Valve Control-Thermostat
TASK 36-11-43-400-001-A
Installation of the Fan-Air Valve Control-Thermostat
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 36-11-54-000-001-A
Removal of the Fan Air Valve
TASK 36-11-54-400-001-A
Installation of the Fan Air Valve
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
F Sense Line Connected between the FAV Control-Thermostat and the FAV - Location ** ON A/C NOT FOR ALL
F Sense Line Connected between the FAV Control-Thermostat and the FAV - Location ** ON A/C NOT FOR ALL
F Connection of the FAV standard 6730A and 6730B with the Bleed Test Set P/N 99127B03
F Connection of the FAV standard 6730F with the Bleed Test Set P/N 99127B03
F Connection of the FAV standard 6730C with the Bleed Test Set P/N 99127B03
F Flow Diagram of the Temperature Control Function
3. Job Set-up
Subtask 36-11-00-861-106-A ** ON A/C NOT FOR ALL
A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 36-11-00-941-110-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 36-11-00-010-114-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 36-11-00-040-079-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 36-11-00-010-115-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 36-11-00-010-114-B ** ON A/C NOT FOR ALL
F. Get Access
   (1) Open the fan cowl doors (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 36-11-00-040-079-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 system for maintenance (Ref. AMM TASK 78-30-00-040-012).
Subtask 36-11-00-010-115-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 36-11-00-010-114-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 36-11-00-040-079-C ** ON A/C NOT FOR ALL
J. 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 36-11-00-010-115-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.
Subtask 36-11-00-480-086-A ** ON A/C NOT FOR ALL
L. Preparation for installation
   (1) Do a visual inspection of the FAV to find the position of the following features in the FAV actuator: sense line connection, test port and deactivation screw.
     (a) For FAV standard 6730A and 6730B
F Sense Line Connected between the FAV Control-Thermostat and the FAV - Location ** ON A/C NOT FOR ALL
F Sense Line Connected between the FAV Control-Thermostat and the FAV - Location ** ON A/C NOT FOR ALL
F Connection of the FAV standard 6730A and 6730B with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL
  • The test port is close to the border of the FAV actuator.
     (b) For FAV standard 6730F
F Sense Line Connected between the FAV Control-Thermostat and the FAV - Location ** ON A/C NOT FOR ALL
F Sense Line Connected between the FAV Control-Thermostat and the FAV - Location ** ON A/C NOT FOR ALL
F Connection of the FAV standard 6730F with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL
  • The test port is close to the center of the FAV actuator.
     (c) For FAV standard 6730C
F Sense Line Connected between the FAV Control-Thermostat and the FAV - Location ** ON A/C NOT FOR ALL
F Sense Line Connected between the FAV Control-Thermostat and the FAV - Location ** ON A/C NOT FOR ALL
F Connection of the FAV standard 6730C with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL
  • The test port is close to the center of the FAV actuator.
Subtask 36-11-00-480-079-A ** ON A/C NOT FOR ALL
M. Installation of the Tool
F Connection of the FAV standard 6730A and 6730B with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL
F Connection of the FAV standard 6730F with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL
F Connection of the FAV standard 6730C with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL
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.
   (1) Cut and discard the lockwire of the deactivation screw of the FAV.
   (2) Remove the deactivation screw.
NOTE: You can use a WRENCH - SPANNER if necessary.
   (3) Connect the 99127B03 BLEED TEST SET to the sense line tester (T10).
NOTE: You can use the 99127-231 TEST SET BLEED - KIT to do this test.
   (4) Connect the sense line tester as follows:
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) Install the adaptor (T15) or (T19) to the deactivation screw port.
     (b) Use your hand to tighten the adaptor.
     (c) Connect the sense line tester (T10) to the adaptor (T15) or (T19).
     (d) Connect the sense line tester (T10) with the hose (T05) to the bleed test-set connector (14).
     (e) Connect the sense line tester (T10) with the hose (T04) to the bleed test-set connector (9).
   (5) Connect the 99127B03 BLEED TEST SET to a 28VDC power supply:
     (a) Connect the 28VDC electrical cord (T03) to the electrical inlet (11) of the 99127B03 BLEED TEST SET (T01) and an SUPPLY - 28 VDC, ELECTRICAL:
  • Start the SUPPLY - 28 VDC, ELECTRICAL.
     (b) Do the test that follows to make sure that the bleed test-set lights operate correctly:
  • Push the pushbutton (26) and make sure that the lights (15 to 21) come ON.
   (6) Do the power-up of the 99127B03 BLEED TEST SET:
     (a) Make sure that the 99127B03 BLEED TEST SET is electrically powered:
       1 If the 28VDC is supplied through an external power supply, turn the power supply to ON.
       2 Set the pressure gauge (5) to ON. The pressure value shown on the LCD screen must be equal to 0 psi (0.00 bar).
       3 If it is not equal to 0 psi (0.00 bar), push the ON button for 10 seconds.
   (7) Connect the FAV electrical connection to the 99127B03 BLEED TEST SET as follows:
     (a) Disconnect the FAV electrical connector from the aircraft harness connector (9HA-A).
CAUTION: WHEN YOU CONNECT THE BLEED TEST SET, STRICTLY OBEY THE CONNECTION SEQUENCE GIVEN. IF YOU DO NOT, DAMAGE TO THE BLEED TEST SET CAN OCCUR.
     (b) Connect the electrical connector cable (T09) from the 99127B03 BLEED TEST SET (29) to the electrical connector (9HA-A) in the aircraft harness:
       1 Make sure that the 28VDC electrical cord (T03) is connected to the connector (11) and the 99127B03 BLEED TEST SET is electrically powered with the 28VDC.
       2 Connect the cable (T09) to the connector (29).
       3 Tighten the screws of the connector (29).
       4 Connect the cable (T09) to the electrical connector (9HA-A):
NOTE: Usually, the bleed test-set light (17) comes on while you do the test of the FAV (9HA).
         a The cable (T08) must not be connected to the connector (12) at this point.
         b Make sure that you do not connect the cable (T09) to the connector (12).
     (c) Connect the electrical connector cable (T08) from the 99127B03 BLEED TEST SET connector (12) to the electrical connector of the FAV:
       1 The light (15) automatically goes off.
   (8) Use a AIR SOURCE - REGULATED, FILTERED, DRY to supply air pressure through the item (1).
4. Procedure
Subtask 36-11-00-720-070-B ** ON A/C NOT FOR ALL
A. Health Check Test of the Temperature Control Function
   (1) Do the minimum opening pressure-test of the FAV with the Bleed Test Set PN 99127B03.
WARNING: BE CAREFUL WHEN YOU PRESSURIZE THE BLEED TEST SET. THE MAXIMUM PRESSURE PERMITTED BY THE BLEED TEST SET IS 290 PSI. PRESSURE HIGHER THAN THE PRESSURE PERMITTED BY THE EQUIPMENT CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT.
     (a) Pressurize the 99127B03 BLEED TEST SET:
       1 Make sure that the two valves (1) and (2) are closed in the sense line tester (T10).
       2 Make sure that the two valves (6) and (7) are closed in the 99127B03 BLEED TEST SET.
       3 Open the main pressure-source shutoff valve slowly and pressurize the 99127B03 BLEED TEST SET (T01) to 30 psi (2.07 bar).
ACTION
RESULT
1.On the sense line tester:
  • Open valves 1 and 2.
On the sense line tester:
  • The two valves are aligned with the pneumatic ducts.
2.On the 99127B03 BLEED TEST SET:
  • Set the blue valve (7) to ON.

3.On the 99127B03 BLEED TEST SET:
  • With the pressure regulator knob A (3), increase the pressure to 4 psi (0.28 bar).
On the 99127B03 BLEED TEST SET:
  • The pressure is given on the LCD (5).
  • The FAV is closed:
    * The light (15) is off.
    * The light (17) is on.
On the FAV:
  • The visual position indicator shows that the valve is closed.
4.On the 99127B03 BLEED TEST SET:
  • With the pressure regulator knob A (3), increase the pressure to 9 psi (0.62 bar).
On the 99127B03 BLEED TEST SET:
  • The pressure is given on the LCD (5).
  • The FAV is open:
    * The light (15) is on.
    * The light (17) is off.
On the FAV:
  • The visual position indicator shows that the valve is open.
5.On the 99127B03 BLEED TEST SET:
  • With the pressure regulator knob A (3), decrease the pressure to 0 psi.
On the 99127B03 BLEED TEST SET:
  • The pressure is given on the LCD (5).
  • The FAV is closed:
    * The light (15) is off.
    * The light (17) is on.
On the FAV:
  • The visual position indicator shows that the valve is closed.
     (b) If the minimum opening pressure-test of the FAV is correct:
  • Do the steps given in the Close-up paragraph.
     (c) If the minimum opening pressure-test of the FAV is not correct:
       1 Do the functional test of the sense line connected between the FAV control thermostat and the FAV with the Bleed Test Set PN 99127B03 (Ref. AMM TASK 36-11-00-720-012).
         a If there is no leak:
         b If there is a leak:
Subtask 36-11-00-720-070-D ** ON A/C NOT FOR ALL
A. Health Check Test of the Temperature Control Function
   (1) Do the minimum opening pressure-test of the FAV with the Bleed Test Set PN 99127B03.
WARNING: BE CAREFUL WHEN YOU PRESSURIZE THE BLEED TEST SET. THE MAXIMUM PRESSURE PERMITTED BY THE BLEED TEST SET IS 290 PSI. PRESSURE HIGHER THAN THE PRESSURE PERMITTED BY THE EQUIPMENT CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT.
     (a) Pressurize the 99127B03 BLEED TEST SET:
       1 Make sure that the two valves (1) and (2) are closed in the sense line tester (T10).
       2 Make sure that the two valves (6) and (7) are closed in the 99127B03 BLEED TEST SET.
       3 Open the main pressure-source shutoff valve slowly and pressurize the 99127B03 BLEED TEST SET (T01) to 30 psi (2.07 bar).
ACTION
RESULT
1.On the sense line tester:
  • Open valves 1 and 2.
On the sense line tester:
  • The two valves are aligned with the pneumatic ducts.
2.On the 99127B03 BLEED TEST SET:
  • Set the blue valve (7) to ON.

3.On the 99127B03 BLEED TEST SET:
  • With the pressure regulator knob A (3), increase the pressure to 4 psi (0.28 bar).
On the 99127B03 BLEED TEST SET:
  • The pressure is given on the LCD (5).
  • The FAV is closed:
    * The light (15) is off.
    * The light (17) is on.
On the FAV:
  • The visual position indicator shows that the valve is closed.
4.On the 99127B03 BLEED TEST SET:
  • With the pressure regulator knob A (3), increase the pressure to 9 psi (0.62 bar).
On the 99127B03 BLEED TEST SET:
  • The pressure is given on the LCD (5).
  • The FAV is open:
    * The light (15) is on.
    * The light (17) is off.
On the FAV:
  • The visual position indicator shows that the valve is open.
5.On the 99127B03 BLEED TEST SET:
  • With the pressure regulator knob A (3), decrease the pressure to 0 psi.
On the 99127B03 BLEED TEST SET:
  • The pressure is given on the LCD (5).
  • The FAV is closed:
    * The light (15) is off.
    * The light (17) is on.
On the FAV:
  • The visual position indicator shows that the valve is closed.
     (b) If the minimum opening pressure-test of the FAV is correct:
  • Do the steps given in the Close-up paragraph.
     (c) If the minimum opening pressure-test of the FAV is not correct:
       1 Do the functional test of the sense line connected between the FAV control thermostat and the FAV with the Bleed Test Set PN 99127B03 (Ref. AMM TASK 36-11-00-720-012).
         a If there is no leak:
         b If there is a leak:
Subtask 36-11-00-720-070-E ** ON A/C NOT FOR ALL
A. Health Check Test of the Temperature Control Function
   (1) Do the minimum opening pressure-test of the FAV with the Bleed Test Set PN 99127B03.
WARNING: BE CAREFUL WHEN YOU PRESSURIZE THE BLEED TEST SET. THE MAXIMUM PRESSURE PERMITTED BY THE BLEED TEST SET IS 290 PSI. PRESSURE HIGHER THAN THE PRESSURE PERMITTED BY THE EQUIPMENT CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT.
     (a) Pressurize the 99127B03 BLEED TEST SET:
       1 Make sure that the two valves (1) and (2) are closed in the sense line tester (T10).
       2 Make sure that the two valves (6) and (7) are closed in the 99127B03 BLEED TEST SET.
       3 Open the main pressure-source shutoff valve slowly and pressurize the 99127B03 BLEED TEST SET (T01) to 30 psi (2.07 bar).
ACTION
RESULT
1.On the sense line tester:
  • Open valves 1 and 2.
On the sense line tester:
  • The two valves are aligned with the pneumatic ducts.
2.On the 99127B03 BLEED TEST SET:
  • Set the blue valve (7) to ON.

3.On the 99127B03 BLEED TEST SET:
  • With the pressure regulator knob A (3), increase the pressure to 4 psi (0.28 bar).
On the 99127B03 BLEED TEST SET:
  • The pressure is given on the LCD (5).
  • The FAV is closed:
    * The light (15) is off.
    * The light (17) is on.
On the FAV:
  • The visual position indicator shows that the valve is closed.
4.On the 99127B03 BLEED TEST SET:
  • With the pressure regulator knob A (3), increase the pressure to 9 psi (0.62 bar).
On the 99127B03 BLEED TEST SET:
  • The pressure is given on the LCD (5).
  • The FAV is open:
    * The light (15) is on.
    * The light (17) is off.
On the FAV:
  • The visual position indicator shows that the valve is open.
5.On the 99127B03 BLEED TEST SET:
  • With the pressure regulator knob A (3), decrease the pressure to 0 psi.
On the 99127B03 BLEED TEST SET:
  • The pressure is given on the LCD (5).
  • The FAV is closed:
    * The light (15) is off.
    * The light (17) is on.
On the FAV:
  • The visual position indicator shows that the valve is closed.
     (b) If the minimum opening pressure-test of the FAV is correct:
  • Do the steps given in the Close-up paragraph.
     (c) If the minimum opening pressure-test of the FAV is not correct:
       1 Do the functional test of the sense line connected between the FAV control thermostat and the FAV with the Bleed Test Set PN 99127B03 (Ref. AMM TASK 36-11-00-720-012).
         a If there is no leak:
         b If there is a leak:
5. Close-up
Subtask 36-11-00-080-077-A ** ON A/C NOT FOR ALL
A. Removal of the Tool
F Connection of the FAV standard 6730A and 6730B with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL
F Connection of the FAV standard 6730F with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL
F Connection of the FAV standard 6730C with the Bleed Test Set P/N 99127B03 ** ON A/C NOT FOR ALL
   (1) Close and disconnect the main pressure source.
   (2) Open the pressure gauge A (3) to decrease the pressure to 0 psi.
   (3) Stop the SUPPLY - 28 VDC, ELECTRICAL.
   (4) 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.
   (5) Disconnect and removal of the FAV electrical connection to the 99127B03 BLEED TEST SET:
  • Disconnect the electrical connector cable (T08) between the 99127B03 BLEED TEST SET (12) and the electrical connector of the FAV.
  • Disconnect the electrical connector cable (T09) from the electrical connector (9HA-A) in aircraft harness.
  • Loosen the screws from connector (29).
  • Disconnect the electrical connector cable (T09) from the 99127B03 BLEED TEST SET.
  • Connect the FAV electrical connector from the Aircraft harness connector (9HA-A).
   (6) Disconnect the hose (T04) from the bleed-test set connector (9) and the sense line tester (T10).
   (7) Disconnect the hose (T05) from the bleed-test set connector (14) and the sense line tester (T10).
   (8) Disconnect the sense line tester (T10) from the adaptor (T15) or (T19).
   (9) Disconnect the adaptor (T15) or (T19) from the deactivation screw port.
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.
   (10) Install the deactivation screw:
NOTE: If the adaptor (T19) is installed, the deactivation screw has a preformed packing.
     (a) Replace the preformed packing.
     (b) Install the deactivation screw on the FAV.
     (c) TORQUE the deactivation screw to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in ) T and.
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.
     (d) Safety the deactivation screw on its support with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
Subtask 36-11-00-410-113-A ** ON A/C NOT FOR ALL
B. 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 36-11-00-440-077-A ** ON A/C NOT FOR ALL
C. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).
Subtask 36-11-00-410-114-A ** ON A/C NOT FOR ALL
D. 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 36-11-00-410-113-B ** ON A/C NOT FOR ALL
E. 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 36-11-00-440-077-B ** ON A/C NOT FOR ALL
F. Do the activation of the thrust reverser HCU (Ref. AMM TASK 78-30-00-440-012).
Subtask 36-11-00-410-114-B ** ON A/C NOT FOR ALL
G. 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 36-11-00-410-113-C ** ON A/C NOT FOR ALL
H. 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 36-11-00-440-077-C ** ON A/C NOT FOR ALL
I. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).
Subtask 36-11-00-410-114-C ** ON A/C NOT FOR ALL
J. 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 WARNING NOTICE(S).
   (4) Remove the access platform(s).
Subtask 36-11-00-862-092-A ** ON A/C NOT FOR ALL
K. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 01:07:10 UTC
"Aviabrain" 2025