DOC AIRBUS | AMM A320FLoad Check of the LPC Bleed Valve Mechanism [IAE]
TASK 72-00-00-720-010-A
Load Check of the LPC Bleed Valve Mechanism
1. Reason for the Job
A. This TASK is for V2500-A5 engines.
B. This TASK gives the procedure to make sure that friction force of the LPC bleed valve mechanism is in the limits.
C. Three methods are used to measure the friction force in this TASK.
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 72-00-00-941-109-A ** ON A/C NOT FOR ALL
Subtask 72-00-00-010-153-A ** ON A/C NOT FOR ALL Subtask 72-00-00-010-154-A ** ON A/C NOT FOR ALL Subtask 72-00-00-020-063-A ** ON A/C NOT FOR ALL
Pre SBE 72-0155
(1) Align the through holes in the rear fairing with the threaded holes in the bleed duct.
(2) Attach the rear fairing to the bleed duct with the 18 screws (11).
.
SBE 72-0155: A new LPC bleed duct with improved durability features.
(4) Align the through holes in the rear fairing with the threaded holes in the bleed duct.
(5) Attach the rear fairing to the bleed duct with the 20 screws (11).
(6) TORQUE the screws to between 0.50 and 0.40 m.daN (44.25 and 35.40 lbf.in ).
Subtask 72-00-00-080-064-A ** ON A/C NOT FOR ALL
Subtask 72-00-00-410-154-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:44:00 UTC
Load Check of the LPC Bleed Valve Mechanism
1. Reason for the Job
A. This TASK is for V2500-A5 engines.
B. This TASK gives the procedure to make sure that friction force of the LPC bleed valve mechanism is in the limits.
C. Three methods are used to measure the friction force in this TASK.
- (1) Method 1 is for use of the setting fixture (IAE1J12539). For this method, it is necessary to remove actuator brackets. Operation of this fixtures requires four persons.
- (2) Method 2 is for use of the inspection fixture (IAE2J12623). For this method, it is not necessary to remove actuator brackets. Operation of this fixtures requires four persons.
- (3) Method 3 is for use of the setting fixture (IAE1J12514). For this method, it is necessary to remove actuator brackets. Operation of this fixtures requires only two persons. The setting fixture (IAE1J12514) is modified from the setting fixture (IAE1J12539).
D. Method 1, Method 2 and Method 3 are alternative to each other.
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | COVER - SHEET |
| No specific | AR | PAPER - THIN |
| No specific | AR | TAPE - ADHESIVE |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 105 and 85 lbf.in (1.19 and 0.96 m.daN ) | |
| No specific | Torque wrench: range to between 0.50 and 0.40 m.daN (44.25 and 35.40 lbf.in ) | |
| IAE1J12514 | 1 | FIXTURE-SETTING |
| IAE1J12539 | 1 | FIXTURE-SETTING |
| IAE2J12623 | 1 | FIXTURE-INSPECTION |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V02-141) | corrosion resistant steel lockwire |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-710-017-B | Ground Test Requirements after Power Plant Module/Component Repair or Replacement Procedures |
| 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 72-00-00-600-011-A | Lubrication of the LPC Bleed Valve Mechanism |
| TASK 75-31-42-000-010-B | Removal of the Low Pressure Compressor (LPC) Bleed-Master Actuator |
| TASK 75-31-42-400-010-B | Installation of the Low Pressure Compressor (LPC) Bleed-Master Actuator |
| TASK 75-31-43-000-010-B | Removal of the Low Pressure Compressor (LPC) Bleed-Slave Actuator |
| TASK 75-31-43-400-010-B | Installation of the Low Pressure Compressor (LPC) Bleed-Slave Actuator |
| 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 |
Installation of Cover Sheet on the Fan CaseSubtask 72-00-00-941-109-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 72-00-00-010-152-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010)
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
Subtask 72-00-00-040-083-A ** ON A/C NOT FOR ALL (1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010)
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
C. Deactivate the thrust reverser.
Subtask 72-00-00-010-156-A ** ON A/C NOT FOR ALL 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) Deactivate the thrust reverser hydraulic control unit (HCU) (Ref. AMM TASK 78-30-00-040-012). D. 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 72-00-00-941-110-A ** ON A/C NOT FOR ALL (1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.
E. Put the ACCESS PLATFORM 1M(3 FT) in position to give access to the fan case rear end.
Subtask 72-00-00-420-065-A ** ON A/C NOT FOR ALL F. Install an applicable COVER - SHEET on the ACOC inlet hole in the fan case not to let unwanted materials go in to the ACOC.
4. ProcedureSubtask 72-00-00-010-153-A ** ON A/C NOT FOR ALL Subtask 72-00-00-010-154-A ** ON A/C NOT FOR ALL Subtask 72-00-00-020-063-A ** ON A/C NOT FOR ALL
C. Method 1 and Method 3: Remove the actuator brackets
(1) Remove the master actuator bracket (1)
(a) Cut and discard the lockwire which safeties the bolts (3) and (5).
(b) Remove the bolts (3) and (5) and the bracket (4).
(c) Remove the bracket (4) and the master actuator bracket (1) from the fan frame.
(2) Remove the slave actuator bracket (7)
(a) Cut and discard the lockwire which safeties the bolts (8).
(b) Remove the bolts (8).
(c) Remove the master actuator bracket from the fan frame.
Subtask 72-00-00-480-071-A ** ON A/C NOT FOR ALL (1) Remove the master actuator bracket (1)
(a) Cut and discard the lockwire which safeties the bolts (3) and (5).
(b) Remove the bolts (3) and (5) and the bracket (4).
(c) Remove the bracket (4) and the master actuator bracket (1) from the fan frame.
(2) Remove the slave actuator bracket (7)
(a) Cut and discard the lockwire which safeties the bolts (8).
(b) Remove the bolts (8).
(c) Remove the master actuator bracket from the fan frame.
D. Method 1: Install the IAE1J12539 FIXTURE-SETTING
(1) Install the brackets A and B (part of the setting fixture) on to the fan frame.
(a) Align the two aligning holes in each bracket with the aligning pins on the fan frame.
(b) Attach each bracket to the fan frame. Safety each bracket with the four socket head cap screws (part of the setting fixture). Tighten the socket head cap screws.
(2) Connect the setting fixture to the end rods
(a) Install the set pins A (part of the setting fixture) in to the holes in the cranks and the holes in the end rods.
(b) Attach an applicable TAPE - ADHESIVE to the pins A and the cranks not to let the pins A disengage from the crank.
(3) Put a torque wrench with an universal joint and a wrench extension adapter in to the wrench hole in each crank.
(4) Turn the two cranks in direction H with the torque wrenches at the same time until the holes F in the cranks are aligned with the holes G in the brackets A and B and install the set pins B (part of the setting fixture) in to the holes F thru the holes G.
Subtask 72-00-00-480-072-A ** ON A/C NOT FOR ALL (1) Install the brackets A and B (part of the setting fixture) on to the fan frame.
(a) Align the two aligning holes in each bracket with the aligning pins on the fan frame.
(b) Attach each bracket to the fan frame. Safety each bracket with the four socket head cap screws (part of the setting fixture). Tighten the socket head cap screws.
(2) Connect the setting fixture to the end rods
(a) Install the set pins A (part of the setting fixture) in to the holes in the cranks and the holes in the end rods.
(b) Attach an applicable TAPE - ADHESIVE to the pins A and the cranks not to let the pins A disengage from the crank.
(3) Put a torque wrench with an universal joint and a wrench extension adapter in to the wrench hole in each crank.
(4) Turn the two cranks in direction H with the torque wrenches at the same time until the holes F in the cranks are aligned with the holes G in the brackets A and B and install the set pins B (part of the setting fixture) in to the holes F thru the holes G.
NOTE: Do not install the set pins B in to the holes G when you turn the cranks.
E. Method 2: Install the IAE2J12623 FIXTURE-INSPECTION
(1) Install the base L (part of the inspection fixture)
(a) Align the aligning holes in the base with the aligning pins on the master actuator bracket.
(b) Attach the base to actuator bracket with the four bolts (part of the inspection fixture). Tighten the bolts.
(2) Install the base R (part of the inspection fixture)
(a) Align the aligning holes in the base with the aligning pins on the slave actuator bracket.
(b) Attach the base to actuator bracket with the three bolts (parts of the inspection fixture). Tighten the bolts.
(3) Connect the rods (part of the inspection fixture) to the actuating rods with the set pins A (part of the inspection fixture). Attach an applicable adhesive tape to the set pins A and the rods not to let the pins A disengage from the crank.
(4) Put a torque wrench in to the wrench hole in each crank (part of the inspection fixture).
(5) Turn the two cranks in direction H with the torque wrenches at the same time until the holes A in the cranks are aligned with the holes "OPEN" in the brackets and install the set pins B in to the holes A thru the holes "OPEN".
Subtask 72-00-00-480-077-A ** ON A/C NOT FOR ALL (1) Install the base L (part of the inspection fixture)
(a) Align the aligning holes in the base with the aligning pins on the master actuator bracket.
(b) Attach the base to actuator bracket with the four bolts (part of the inspection fixture). Tighten the bolts.
(2) Install the base R (part of the inspection fixture)
(a) Align the aligning holes in the base with the aligning pins on the slave actuator bracket.
(b) Attach the base to actuator bracket with the three bolts (parts of the inspection fixture). Tighten the bolts.
(3) Connect the rods (part of the inspection fixture) to the actuating rods with the set pins A (part of the inspection fixture). Attach an applicable adhesive tape to the set pins A and the rods not to let the pins A disengage from the crank.
(4) Put a torque wrench in to the wrench hole in each crank (part of the inspection fixture).
(5) Turn the two cranks in direction H with the torque wrenches at the same time until the holes A in the cranks are aligned with the holes "OPEN" in the brackets and install the set pins B in to the holes A thru the holes "OPEN".
NOTE: Do not install the set pins B in to the holes A when you turn the cranks.
F. Method 3: Install the IAE1J12514 FIXTURE-SETTING
(1) Install the two brackets (part of the setting fixture) on to the fan frame.
(a) Align the two aligning holes in each bracket with the aligning pins on the fan frame.
(b) Attach the brackets to the fan frame assembly. Safety each bracket with the four socket head cap screws (part of the setting fixture). Tighten the socket head cap screws.
(2) Connect the end rods to the cranks of the setting fixture.
(a) Set the plungers (part of setting fixture) to the position A.
(b) Connect each end rod to the setting fixture with the set pin.
(3) Set the plungers to position B.
(4) Put a torque wrench with an universal joint and a wrench extension adapter in to the wrench hole in each cranck.
(5) Turn the two crancks in direction H with the torque wrenches at the same time until the holes F are aligned to the plungers (position C). Make sure that the plungers go in to holes F.
Subtask 72-00-00-640-053-A ** ON A/C NOT FOR ALL (1) Install the two brackets (part of the setting fixture) on to the fan frame.
(a) Align the two aligning holes in each bracket with the aligning pins on the fan frame.
(b) Attach the brackets to the fan frame assembly. Safety each bracket with the four socket head cap screws (part of the setting fixture). Tighten the socket head cap screws.
(2) Connect the end rods to the cranks of the setting fixture.
(a) Set the plungers (part of setting fixture) to the position A.
(b) Connect each end rod to the setting fixture with the set pin.
(3) Set the plungers to position B.
(4) Put a torque wrench with an universal joint and a wrench extension adapter in to the wrench hole in each cranck.
(5) Turn the two crancks in direction H with the torque wrenches at the same time until the holes F are aligned to the plungers (position C). Make sure that the plungers go in to holes F.
NOTE: The plungers go into the holes F when they are correctly aligned.
G. Apply lubricant to the LPC bleed valve mechanism (Ref. AMM TASK 72-00-00-600-011).
Subtask 72-00-00-640-054-A ** ON A/C NOT FOR ALL NOTE: Do not close the rear fairing in this subtask. Close the rear fairing in step M.
H. Turn the two crancks in direction H and I with the torque wrenches at the same time 10 or more times to let the lubricant extend to all outer diameter faces on the pins.
Subtask 72-00-00-720-051-A ** ON A/C NOT FOR ALL I. Method 1: Do a check of the force necessary to move the LPC bleed valve mechanism
(1) Measure the force necessary to move the mechanism until the bleed valve touches the bleed duct seal lightly
(a) Move the rear fairing forward until it touches the FEGVs.
(b) Turn the two cranks in direction H with the torque wrenches at the same time to make a space between the bleed valve and the rubber seal.
(c) Put a PAPER - THIN between the bleed valve and the rubber seal at the bottom position.
(d) Turn the two cranks in direction I with the torque wrenches at the same time until the bleed valve touches the rubber seal lightly. Do the followings while you turn the cranks.
1 Slowly move the thin paper up and down to find if the bleed valve touches the rubber seal.
3 Stop moving the paper when you feel that the bleed valve catches the paper.
(2) Make sure that the maximum torque value of the each torque wrench is 124 lbf.in (1.40 m.daN) or less
(a) If the torque value is in the limit, go to step J.(3).
(b) If the torque value is not in the limit, the lubrication is not sufficient. Go to step G.
(3) Measure the force necessary to move the actuating rods until the bleed valve pushes the rubber seal strongly
(a) Turn the two cranks in direction H with the torque wrenches at the same time to open the bleed valve. Remove the thin paper.
(b) Turn the two cranks in direction I with the torque wrenches at the same time until the holes E in the cranks are aligned with the holes G in the brackets A and B. Make sure that the pins B are not installed the holes E through the holes G and read the maximum torque values of the torque wrenches and write on an applicable record sheet.
(a) If the torque value is in the limit, lubrication is sufficient. Go to step M.
(b) If the torque value is not in the limit, lubrication is not sufficient. Go to step G.
Subtask 72-00-00-720-052-A ** ON A/C NOT FOR ALL (1) Measure the force necessary to move the mechanism until the bleed valve touches the bleed duct seal lightly
(a) Move the rear fairing forward until it touches the FEGVs.
(b) Turn the two cranks in direction H with the torque wrenches at the same time to make a space between the bleed valve and the rubber seal.
(c) Put a PAPER - THIN between the bleed valve and the rubber seal at the bottom position.
(d) Turn the two cranks in direction I with the torque wrenches at the same time until the bleed valve touches the rubber seal lightly. Do the followings while you turn the cranks.
1 Slowly move the thin paper up and down to find if the bleed valve touches the rubber seal.
NOTE: You feel that the bleed valve catches the paper when the bleed valve touches the rubber seal.
2 Read the maximum torque value of each torque wrench. Write the values on an applicable record sheet. 3 Stop moving the paper when you feel that the bleed valve catches the paper.
(2) Make sure that the maximum torque value of the each torque wrench is 124 lbf.in (1.40 m.daN) or less
(a) If the torque value is in the limit, go to step J.(3).
(b) If the torque value is not in the limit, the lubrication is not sufficient. Go to step G.
(3) Measure the force necessary to move the actuating rods until the bleed valve pushes the rubber seal strongly
(a) Turn the two cranks in direction H with the torque wrenches at the same time to open the bleed valve. Remove the thin paper.
(b) Turn the two cranks in direction I with the torque wrenches at the same time until the holes E in the cranks are aligned with the holes G in the brackets A and B. Make sure that the pins B are not installed the holes E through the holes G and read the maximum torque values of the torque wrenches and write on an applicable record sheet.
NOTE: You can make sure of the aligned holes easily with the set pins B (Part of the setting fixture). If the holes are aligned, the set pins B can go in to the holes E through the holes G.
(4) Make sure that the torque value of the each torque wrench is 570 lbf.in (6.44 m.daN) or less (a) If the torque value is in the limit, lubrication is sufficient. Go to step M.
(b) If the torque value is not in the limit, lubrication is not sufficient. Go to step G.
J. Method 2: Do a check of the force necessary to move the LPC bleed valve mechanism
(1) Measure the force necessary to move the mechanism until the bleed valve touches the bleed duct seal lightly
(a) Move the rear fairing forward until it touches the FEGVs.
(b) Turn the two cranks in direction H with the torque wrenches at the same time to make a space between the bleed valve and the rubber seal.
(c) Put a thin paper between the bleed valve and the rubber seal.
(d) Turn the two cranks in direction I with the torque wrenches at the same time until the bleed valve touches the rubber seal lightly. Do the followings while you turn the cranks.
1 Slowly move the thin paper up and down to find if the bleed valve touches the rubber seal.
3 Stop moving the paper when you feel that the bleed valve catches the paper.
(2) Make sure that the maximum torque value of the each torque wrench is 159 lbf.in (1.80 m.daN) or less
(a) If the torque value is in the limit, go to step (3).
(b) If the torque value is not in the limit, the lubrication is not sufficient. Go to step G.
(3) Measure the force necessary to move the mechanism until the bleed valve pushes the rubber seal strongly
(a) Turn the two cranks in direction H with the torque wrenches at the same time to open the bleed valve. Remove the thin paper.
(b) Turn the two cranks in direction I with the torque wrenches at the same time until you align the two holes A in the cranks with the holes "CLOSE" in the brackets. Make sure that the pins B are not installed the holes A through the holes "CLOSE" and read the torque values of the torque wrenches and write on an applicable record sheet.
(a) If the torque value is in the limit, lubrication is sufficient. go to step M.
(b) If the torque values is not in the limit, lubrication is not sufficient. Go to step G.
Subtask 72-00-00-720-054-A ** ON A/C NOT FOR ALL (1) Measure the force necessary to move the mechanism until the bleed valve touches the bleed duct seal lightly
(a) Move the rear fairing forward until it touches the FEGVs.
(b) Turn the two cranks in direction H with the torque wrenches at the same time to make a space between the bleed valve and the rubber seal.
(c) Put a thin paper between the bleed valve and the rubber seal.
(d) Turn the two cranks in direction I with the torque wrenches at the same time until the bleed valve touches the rubber seal lightly. Do the followings while you turn the cranks.
1 Slowly move the thin paper up and down to find if the bleed valve touches the rubber seal.
NOTE: You feel that the bleed valve catches the paper when the bleed valve touches the rubber seal.
2 Read the maximum torque value of each torque wrench. Write the values on an applicable record sheet. 3 Stop moving the paper when you feel that the bleed valve catches the paper.
(2) Make sure that the maximum torque value of the each torque wrench is 159 lbf.in (1.80 m.daN) or less
(a) If the torque value is in the limit, go to step (3).
(b) If the torque value is not in the limit, the lubrication is not sufficient. Go to step G.
(3) Measure the force necessary to move the mechanism until the bleed valve pushes the rubber seal strongly
(a) Turn the two cranks in direction H with the torque wrenches at the same time to open the bleed valve. Remove the thin paper.
(b) Turn the two cranks in direction I with the torque wrenches at the same time until you align the two holes A in the cranks with the holes "CLOSE" in the brackets. Make sure that the pins B are not installed the holes A through the holes "CLOSE" and read the torque values of the torque wrenches and write on an applicable record sheet.
NOTE: You can make sure of the aligned holes easily with the set pins B (Part of the inspection fixture). If the holes are aligned, the set pins B can go in to the holes A through the holes "CLOSE".
(4) Make sure that the torque value of the each torque wrench is 732 lbf.in (8.27 m.daN) or less (a) If the torque value is in the limit, lubrication is sufficient. go to step M.
(b) If the torque values is not in the limit, lubrication is not sufficient. Go to step G.
K. Method 3: Do a check of the force necessary to move the LPC bleed valve mechanism.
(1) Make sure that plungers are set at position A.
(2) Measure the force necessary to move the mechanism until the bleed valve touches the bleed duct seal lightly.
(a) Move the rear fairing forward until it touches the FEGVs.
(b) Turn the two cranks in direction H with the torque wrenches at the same time to make a space between the bleed valve and the rubber seal.
(c) Put a thin paper between the bleed valve and the rubber seal at the bottom position.
(d) Turn the two cranks in direction I with the torque wrenches at the same time until the bleed valve touches the rubber seal lightly. Do the followings while you turn the cranks.
1 Slowly move the thin paper up and down to find if the bleed valve touches the rubber seal.
3 Stop moving the paper when you feel that the bleed valve catches the paper.
(3) Make sure that the maximum torque value of the each torque wrench is 124 lbf.in (1.40 m.daN) or less.
(a) If the torque value is in the limit, go to step (4).
(b) If the torque value is not in the limit, the lubrication is not sufficient. Go to step G.
(4) Measure the force necessary to move the actuating rods until the bleed valve pushes the rubber seal strongly.
(a) Turn the two cranks in direction H with the torque wrenches at the same time to open the bleed valve. Remove the thin paper.
(b) Set plungers to position B.
(c) Turn the two cranks in direction I with the torque wrenches at the same time until the holes E in the cranks are aligned with the plungers (position C). Read the maximum torque values of the torque wrenches and write on an applicable sheet.
(a) If the torque value is in the limit, lubrication is sufficient. Go to step M.
(b) If the torque value is not in the limit, lubrication is not sufficient. Go to step G.
Subtask 72-00-00-410-151-A ** ON A/C NOT FOR ALL (1) Make sure that plungers are set at position A.
(2) Measure the force necessary to move the mechanism until the bleed valve touches the bleed duct seal lightly.
(a) Move the rear fairing forward until it touches the FEGVs.
(b) Turn the two cranks in direction H with the torque wrenches at the same time to make a space between the bleed valve and the rubber seal.
(c) Put a thin paper between the bleed valve and the rubber seal at the bottom position.
(d) Turn the two cranks in direction I with the torque wrenches at the same time until the bleed valve touches the rubber seal lightly. Do the followings while you turn the cranks.
1 Slowly move the thin paper up and down to find if the bleed valve touches the rubber seal.
NOTE: You feel that the bleed valve catches the paper when the bleed valve touches the rubber seal.
2 Read the maximum torque value of each torque wrench. Write the values on an applicable record sheet. 3 Stop moving the paper when you feel that the bleed valve catches the paper.
(3) Make sure that the maximum torque value of the each torque wrench is 124 lbf.in (1.40 m.daN) or less.
(a) If the torque value is in the limit, go to step (4).
(b) If the torque value is not in the limit, the lubrication is not sufficient. Go to step G.
(4) Measure the force necessary to move the actuating rods until the bleed valve pushes the rubber seal strongly.
(a) Turn the two cranks in direction H with the torque wrenches at the same time to open the bleed valve. Remove the thin paper.
(b) Set plungers to position B.
(c) Turn the two cranks in direction I with the torque wrenches at the same time until the holes E in the cranks are aligned with the plungers (position C). Read the maximum torque values of the torque wrenches and write on an applicable sheet.
NOTE: You can make sure of the aligned holes and plunger easily with the plungers (part of the setting fixture). If the hole and plunger are aligned, the plungers can go in to the holes E.
(5) Make sure that the force value of the each torque wrench is 570 lbf.in (6.44 m.daN) or less. (a) If the torque value is in the limit, lubrication is sufficient. Go to step M.
(b) If the torque value is not in the limit, lubrication is not sufficient. Go to step G.
CAUTION:
CAREFULLY INSTALL THE SCREWS NOT TO LET THEM FALL IN THE BLEED AIR PASSAGE IN THE BLEED DUCT. THE SCREWS GO INTO THE HP COMPRESSOR AND BREAK THE BLADES AND THE VANES. DISASSEMBLE THE ENGINE AND REMOVE THE SCREWS IF THEY FALL IN THE BLEED AIR PASSAGE.
L. Close the rear fairing Pre SBE 72-0155
(1) Align the through holes in the rear fairing with the threaded holes in the bleed duct.
(2) Attach the rear fairing to the bleed duct with the 18 screws (11).
NOTE: Do not install the screws in to the holes N°6 and 16.
(3) TORQUE the screws to between 0.50 and 0.40 m.daN (44.25 and 35.40 lbf.in ) . SBE 72-0155: A new LPC bleed duct with improved durability features.
(4) Align the through holes in the rear fairing with the threaded holes in the bleed duct.
(5) Attach the rear fairing to the bleed duct with the 20 screws (11).
(6) TORQUE the screws to between 0.50 and 0.40 m.daN (44.25 and 35.40 lbf.in )
. M. Method 1: Remove the setting fixture
(1) Remove the set pins A which connect the cranks to the end rods.
(2) Remove the eight socket head cap screws which attach the brackets A and B to the fan frame.
Subtask 72-00-00-080-065-A ** ON A/C NOT FOR ALL (1) Remove the set pins A which connect the cranks to the end rods.
(2) Remove the eight socket head cap screws which attach the brackets A and B to the fan frame.
N. Method 2: Remove the inspection fixture
(1) Remove the set pins A which connect the rods of the fixture to the end rods.
(2) Remove the seven bolts which attach the bases L and R to the master actuator bracket and the slave actuator bracket.
Subtask 72-00-00-080-069-A ** ON A/C NOT FOR ALL (1) Remove the set pins A which connect the rods of the fixture to the end rods.
(2) Remove the seven bolts which attach the bases L and R to the master actuator bracket and the slave actuator bracket.
O. Method 3: Remove the setting fixture.
(1) Remove the two set pins which attach the end rods to the brackets.
(2) Remove the eight socket head cap screws which attach the brackets to the fan frame.
Subtask 72-00-00-420-066-A ** ON A/C NOT FOR ALL (1) Remove the two set pins which attach the end rods to the brackets.
(2) Remove the eight socket head cap screws which attach the brackets to the fan frame.
P. Method 1 and Method 3: Install the actuator brackets
(1) Install the master actuator bracket (1)
(a) Attach the master actuator bracket (1) to the fan frame with the two bolts (3).
(b) Install the two bolts (5) which attach the bracket (4) and the master actuator bracket (1).
(c) TORQUE the bolts (3) and (5) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )
(d) Safety the bolts with corrosion resistant steel lockwire (Material No.V02-141) .
(2) Install the slave actuator bracket (7)
(a) Attach the slave actuator bracket (7) to the fan frame with the four bolts (8).
(b) TORQUE the bolts (8) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN ).
(c) Safety the bolts with corrosion resistant steel lockwire (Material No.V02-141) .
Subtask 72-00-00-410-152-A ** ON A/C NOT FOR ALL Subtask 72-00-00-410-153-A ** ON A/C NOT FOR ALL Subtask 72-00-00-020-064-A ** ON A/C NOT FOR ALL (1) Install the master actuator bracket (1)
(a) Attach the master actuator bracket (1) to the fan frame with the two bolts (3).
(b) Install the two bolts (5) which attach the bracket (4) and the master actuator bracket (1).
(c) TORQUE the bolts (3) and (5) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )
(d) Safety the bolts with corrosion resistant steel lockwire (Material No.V02-141) .
(2) Install the slave actuator bracket (7)
(a) Attach the slave actuator bracket (7) to the fan frame with the four bolts (8).
(b) TORQUE the bolts (8) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )
. (c) Safety the bolts with corrosion resistant steel lockwire (Material No.V02-141) .
S. Remove the cover sheet from the fan case.
5. Close-upSubtask 72-00-00-410-154-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 72-00-00-440-084-A ** ON A/C NOT FOR ALL Subtask 72-00-00-410-157-A ** ON A/C NOT FOR ALL (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.
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) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
Subtask 72-00-00-710-063-A ** ON A/C NOT FOR ALL (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) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
D. Do the idle leak check for the fuel tubes of the LPC bleed actuators (Ref. AMM TASK 71-00-00-710-017).