DOC AIRBUS | AMM A320FInstallation of the Low Pressure (LP) Turbine Active Clearance Control (ACC) Manifold and Tubes [IAE]
TASK 75-24-49-400-010-B
Installation of the Low Pressure (LP) Turbine Active Clearance Control (ACC) Manifold and Tubes
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 75-24-49-860-052-A ** ON A/C NOT FOR ALL
Subtask 75-24-49-410-057-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 13:08:41 UTC
Installation of the Low Pressure (LP) Turbine Active Clearance Control (ACC) Manifold and Tubes
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.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 30 and 27 lbf.in (0.34 and 0.31 m.daN )  | |
| No specific | Torque wrench: range to between 40 and 36 lbf.in (0.45 and 0.41 m.daN ) | |
| No specific | Torque wrench: range to between 72 and 62 lbf.in (0.81 and 0.70 m.daN ) | |
| IAE1M14077 | 1 | PLUG, PROTECTIVE |
| IAE1M14083 | 1 | PLUG, PROTECTIVE |
| IAE1M14084 | 1 | FIXTURE, SUPPORT |
| IAE1M14117 | 1 | GAGE,CHECKING-GO NO GO |
| IAE1M14118 | 1 | GAGE, CHECKING - GO/NO GO |
| IAE1M14121 | 1 | GAGE, CHECKING-GO/ NO GO |
| IAE1M14122 | 1 | GAGE, CHECKING-GO/ NO GO |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V10-094) | anti-seize compound |
| (Material No.V10-129A) | anti-seize paste |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-23-11-911-013-A | General Torque Tightening Techniques |
| 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 75-24-48-400-010-A | Installation of the HP Active Clearance Control (ACC) Manifold |
| 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 |
LPT Cooling Air Duct and Support FixtureSubtask 75-24-49-860-052-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
Subtask 75-24-49-010-060-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open (Ref. AMM TASK 78-32-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 75-24-49-040-053-A ** ON A/C NOT FOR ALL (1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open (Ref. AMM TASK 78-32-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
C. Make sure that the thrust reverser Hydraulic Control Unit (HCU) is deactivated (Ref. AMM TASK 78-30-00-040-012).
Subtask 75-24-49-630-051-A ** ON A/C NOT FOR ALL D. Removal of the Protective Plugs from the Tube Openings
(1) Remove the IAE1M14077 PLUG, PROTECTIVE, from the front opening of the tube connector.
(2) Remove the IAE1M14083 PLUG, PROTECTIVE, from the rear openings of the tube connector.
(3) Remove the IAE1M14083 PLUG, PROTECTIVE, from the openings of the upper and lower LP turbine cooling air ducts.
4. Procedure(1) Remove the IAE1M14077 PLUG, PROTECTIVE, from the front opening of the tube connector.
(2) Remove the IAE1M14083 PLUG, PROTECTIVE, from the rear openings of the tube connector.
(3) Remove the IAE1M14083 PLUG, PROTECTIVE, from the openings of the upper and lower LP turbine cooling air ducts.
NOTE: PRE SBE 75-0095 spacers are no longer procurable, refer to SBE 75-0095 for more information.
Subtask 75-24-49-080-054-A ** ON A/C NOT FOR ALL A. Removal of the Upper LP Turbine Cooling Air Duct from the Support Fixture
(1) Loosen the knurled knob (1) and remove the swing bolt (6), the two screws (4) and the two washers (3) that safety the upper LP\\Turbine cooling air duct (2) to the IAE1M14084 FIXTURE, SUPPORT (5).
(2) Remove the upper LP turbine cooling air duct from the support fixture and position it on a work bench.
Subtask 75-24-49-420-061-A ** ON A/C NOT FOR ALL (1) Loosen the knurled knob (1) and remove the swing bolt (6), the two screws (4) and the two washers (3) that safety the upper LP\\Turbine cooling air duct (2) to the IAE1M14084 FIXTURE, SUPPORT (5).
(2) Remove the upper LP turbine cooling air duct from the support fixture and position it on a work bench.
B. Installation of the Supports Assembly (4) on to the Upper LP Turbine Cooling Air Duct
(2) Move the support assembly (4) above the tube ends of the upper LP turbine cooling air duct.
(3) Make sure that the support assembly (4) is correctly installed on to the upper LP turbine cooling air duct.
(4) Install the eight bolts (5) by hand until they engage the locking elements of the clip nuts (6).
(5) Safety the support assembly (4) with the eight bolts (5) to the upper LP turbine cooling air duct.
(6) Do not fully tighten the bolts at this time.
Subtask 75-24-49-420-062-A ** ON A/C NOT FOR ALL NOTE: Lubricate all threads and abutment faces of nuts and bolts with anti-seize paste (Material No.V10-129A) to prevent seizure.
CAUTION:
BE CAREFUL IF YOU BEND THE HALF LOOP CLAMP SO THAT YOU DO NOT DAMAGE THE PART.
(1) Bend the half loop clamp: NOTE: The half loop clamp (9) and the support assembly (4) are assembled by the rivets (3) and (8) at the front and the rear ends of the parts.
(a) Bend the half loop clamp (9) lightly. (2) Move the support assembly (4) above the tube ends of the upper LP turbine cooling air duct.
(3) Make sure that the support assembly (4) is correctly installed on to the upper LP turbine cooling air duct.
(4) Install the eight bolts (5) by hand until they engage the locking elements of the clip nuts (6).
(5) Safety the support assembly (4) with the eight bolts (5) to the upper LP turbine cooling air duct.
(6) Do not fully tighten the bolts at this time.
C. Installation of the Support Assembly (7) on to the Upper LP Turbine Cooling Air Duct
(2) Move the support assembly (7) above the tube ends of the upper LP turbine cooling air duct.
(3) Make sure that the support assembly (7) is correctly installed on to the upper LP turbine cooling air duct.
(4) Install the eight bolts (1) by hand until they engage the locking elements of the clip nuts (13).
(5) Safety the support assembly (7) with the eight bolts (1) to the upper LP turbine cooling air duct.
(6) Do not fully tighten the bolts at this time.
Subtask 75-24-49-080-055-A ** ON A/C NOT FOR ALL NOTE: Lubricate all threads and abutment faces of nuts and bolts with anti-seize paste (Material No.V10-129A) to prevent seizure.
CAUTION:
BE CAREFUL IF YOU BEND THE HALF LOOP CLAMP SO THAT YOU DO NOT DAMAGE THE PART.
(1) Bend the half loop clamp: NOTE: The half loop clamp (11) and the support assembly (7) are assembled by the rivets (2) and (10) at the front and the rear ends of the parts.
(a) Bend the half loop clamp (11) lightly. (2) Move the support assembly (7) above the tube ends of the upper LP turbine cooling air duct.
(3) Make sure that the support assembly (7) is correctly installed on to the upper LP turbine cooling air duct.
(4) Install the eight bolts (1) by hand until they engage the locking elements of the clip nuts (13).
(5) Safety the support assembly (7) with the eight bolts (1) to the upper LP turbine cooling air duct.
(6) Do not fully tighten the bolts at this time.
D. Removal of the Lower LP Turbine Cooling Air Duct from the Support Fixture
(1) Loosen the knurled knob (1) and remove the swing bolt (6), the two screws (4) and the two washers (3) that safety the lower LP turbine cooling air duct (2) to the IAE1M14084 FIXTURE, SUPPORT (5).
(2) Remove the lower LP turbine cooling air duct from the support fixture and position it on a work bench.
Subtask 75-24-49-420-064-A ** ON A/C NOT FOR ALL (1) Loosen the knurled knob (1) and remove the swing bolt (6), the two screws (4) and the two washers (3) that safety the lower LP turbine cooling air duct (2) to the IAE1M14084 FIXTURE, SUPPORT (5).
(2) Remove the lower LP turbine cooling air duct from the support fixture and position it on a work bench.
E. Installation of the Support Assembly (7) on to the Lower LP Turbine Cooling Air Duct
(2) Move the support assembly (7) above the tube ends of the lower LP turbine cooling air duct.
(3) Make sure that the support assembly (7) is correctly installed on to the lower LP turbine cooling air duct.
(4) Install the eight bolts (8) by hand until they engage the locking elements of the clip nuts (9).
(5) Safety the support assembly (7) with the eight bolts (8) to the lower LP turbine cooling air duct.
(6) Do not fully tighten the bolts at this time.
Subtask 75-24-49-420-069-A ** ON A/C NOT FOR ALL NOTE: Lubricate all threads and abutment faces of nuts and bolts with anti-seize paste (Material No.V10-129A) to prevent seizure.
CAUTION:
BE CAREFUL IF YOU BEND THE HALF LOOP CLAMP SO THAT YOU DO NOT DAMAGE THE PART.
(1) Bend the half loop clamp: NOTE: The half loop clamp (10) and the support assembly (7) are assembled by the rivets (6) and (13) at the front and the rear ends of the parts.
(a) Bend the half loop clamp (10) lightly. (2) Move the support assembly (7) above the tube ends of the lower LP turbine cooling air duct.
(3) Make sure that the support assembly (7) is correctly installed on to the lower LP turbine cooling air duct.
(4) Install the eight bolts (8) by hand until they engage the locking elements of the clip nuts (9).
(5) Safety the support assembly (7) with the eight bolts (8) to the lower LP turbine cooling air duct.
(6) Do not fully tighten the bolts at this time.
F. Installation of the Brackets (1) and (3) and the Support Assembly (2) on to the Lower LP Turbine Cooling Air Duct
(2) Make sure that the brackets are correctly positioned on to the lower duct.
(3) Attach the brackets with the nut (2) and the bolt (4).
(4) Do not fully tighten the bolt at this time.
(6) Move the support assembly (2) above the tube ends of the lower LP turbine cooling air duct.
(7) Make sure that the support assembly (2) is correctly installed on to the lower LP turbine cooling air duct.
(8) Install the eight bolts (9) by hand until they engage the locking elements of the clip nuts (8).
(9) Safety the support assembly (2) with the eight bolts (9) to the lower LP turbine cooling air duct.
(10) Do not fully tighten the bolts at this time.
Subtask 75-24-49-420-071-A ** ON A/C NOT FOR ALL NOTE: Lubricate all threads and abutment faces of nuts and bolts with anti-seize paste (Material No.V10-129A) to prevent seizure.
(1) Move the brackets (1) and (3) above the tube ends of the lower duct (2) Make sure that the brackets are correctly positioned on to the lower duct.
(3) Attach the brackets with the nut (2) and the bolt (4).
(4) Do not fully tighten the bolt at this time.
CAUTION:
BE CAREFUL IF YOU BEND THE HALF LOOP CLAMP SO THAT YOU DO NOT DAMAGE THE PART.
(5) Bend the half loop clamp: NOTE: The half loop clamp (6) and the support assembly (2) are assembled by the rivets (7) and (10) at the front and the rear ends of the parts.
(a) Bend the half loop clamp (6) lightly (6) Move the support assembly (2) above the tube ends of the lower LP turbine cooling air duct.
(7) Make sure that the support assembly (2) is correctly installed on to the lower LP turbine cooling air duct.
(8) Install the eight bolts (9) by hand until they engage the locking elements of the clip nuts (8).
(9) Safety the support assembly (2) with the eight bolts (9) to the lower LP turbine cooling air duct.
(10) Do not fully tighten the bolts at this time.
G. Installation of the Support Assembly (8) on to the Lower LP Turbine Cooling Air Duct
(2) Move the support assembly (8) above the tube ends of the lower LP turbine cooling air duct.
(3) Make sure that the support assembly (8) is approximately 0.2 in. (5.08 mm) from the tube ends.
(4) Install the 16 bolts (10) by hand until they engage the locking elements of the clip nuts (9).
(5) Safety the support assembly (8) with the 16 bolts (10) to the lower LP turbine cooling air duct.
(6) Do not fully tighten the bolts at this time.
Subtask 75-24-49-420-072-A ** ON A/C NOT FOR ALL NOTE: Lubricate all threads and abutment faces of nuts and bolts with anti-seize paste (Material No.V10-129A) to prevent seizure.
CAUTION:
BE CAREFUL IF YOU BEND THE HALF LOOP CLAMP SO THAT YOU DO NOT DAMAGE THE PART.
(1) Bend the half loop clamp: NOTE: The half loop clamp (11) and the support assembly (8) are assembled by the rivets (7) and (12) at the front and the rear ends of the parts.
(a) Bend the half loop clamp (11) lightly. (2) Move the support assembly (8) above the tube ends of the lower LP turbine cooling air duct.
(3) Make sure that the support assembly (8) is approximately 0.2 in. (5.08 mm) from the tube ends.
(4) Install the 16 bolts (10) by hand until they engage the locking elements of the clip nuts (9).
(5) Safety the support assembly (8) with the 16 bolts (10) to the lower LP turbine cooling air duct.
(6) Do not fully tighten the bolts at this time.
H. Installation of the Support Assembly (6) on to the Lower LP Turbine Cooling Air Duct
(2) Move the support assembly (6) above the tube ends of the lower LP turbine cooling air duct.
(3) Make sure that the support assembly (6) is approximately 0.2 in. (5.08 mm) from the tube ends.
(4) Install the 16 bolts (5) by hand until they engage the locking elements of the clip nuts (8).
(5) Safety the support assembly (6) with the 16 bolts (5) to the lower LP turbine cooling air duct.
(6) Do not fully tighten the bolts at this time.
Subtask 75-24-49-420-073-A ** ON A/C NOT FOR ALL NOTE: Lubricate all threads and abutment faces of nuts and bolts with anti-seize paste (Material No.V10-129A) to prevent seizure.
CAUTION:
BE CAREFUL IF YOU BEND THE HALF LOOP CLAMP SO THAT YOU DO NOT DAMAGE THE PART.
(1) Bend the half loop clamp: NOTE: The half loop clamp (7) and the support assembly (6) are assembled by the rivets (4) and (9) at the front and the rear ends of the parts.
(a) Bend the half loop clamp (7) lightly. (2) Move the support assembly (6) above the tube ends of the lower LP turbine cooling air duct.
(3) Make sure that the support assembly (6) is approximately 0.2 in. (5.08 mm) from the tube ends.
(4) Install the 16 bolts (5) by hand until they engage the locking elements of the clip nuts (8).
(5) Safety the support assembly (6) with the 16 bolts (5) to the lower LP turbine cooling air duct.
(6) Do not fully tighten the bolts at this time.
I. Attach the Clamps, the Periseal Connectors and the Periseal Housing
(1) Install the two clamps (7) and (2) on to the tube connector (11).
(2) Make sure that the attaching flanges of the clamps are pointing to the rear inner side.
(3) Remove the nuts and bolts from the two retaining clamps (10) and (15).
(4) Install the two retaining clamps (10) and (15), one on to each periseal connector.
(5) Engage the two periseal connectors (9) and (16) on to the tube ends of the tube connector (11) until the second seal ring touches the end of the tube connector.
(6) Install the periseal housing (14) on to the ACC rear duct in the retracted position.
Subtask 75-24-49-420-074-A ** ON A/C NOT FOR ALL (1) Install the two clamps (7) and (2) on to the tube connector (11).
(2) Make sure that the attaching flanges of the clamps are pointing to the rear inner side.
(3) Remove the nuts and bolts from the two retaining clamps (10) and (15).
(4) Install the two retaining clamps (10) and (15), one on to each periseal connector.
(5) Engage the two periseal connectors (9) and (16) on to the tube ends of the tube connector (11) until the second seal ring touches the end of the tube connector.
(6) Install the periseal housing (14) on to the ACC rear duct in the retracted position.
J. Installation of the Upper LP Turbine Cooling Air Duct on to the LP Turbine Case
(2) Attach the upper LP turbine cooling air duct (1) to the LP turbine case with the bolts (2) and (6), the spacer with a small diameter (7), two spacers (5) between the cooling air duct and the case, two spacers (4) between the cooling air duct and the washer (3) at the bolt (2) and the washer (3).
(3) Do not fully tighten the bolts at this time.
(4) Attach the support assembly (4) to the LP turbine case with the bolts (2) and (10), the spacer with a small diameter (11), two spacers (12) between the support assembly (4) and the LP turbine case, two spacers (13) between the support assembly (4) and the washer (1) at the bolt (2) and the washer (1).
(5) Do not fully tighten the bolts at this time.
(6) Attach the support assembly (7) to the LP turbine case with the bolts (9) and (3), the spacer with a small diameter (8), two spacers (6) between the support assembly (7) and the LP turbine case, two spacers (5) between the support assembly (7) and the washer (4) at the bolt (3) and the washer (4).
(7) Do not fully tighten the bolts at this time.
Subtask 75-24-49-420-075-A ** ON A/C NOT FOR ALL NOTE: Lubricate all threads and abutment faces of nuts and bolts with anti-seize paste (Material No.V10-129A) to prevent seizure.
(1) Put the upper LP turbine cooling air duct in to position on the LP turbine case. (2) Attach the upper LP turbine cooling air duct (1) to the LP turbine case with the bolts (2) and (6), the spacer with a small diameter (7), two spacers (5) between the cooling air duct and the case, two spacers (4) between the cooling air duct and the washer (3) at the bolt (2) and the washer (3).
(3) Do not fully tighten the bolts at this time.
(4) Attach the support assembly (4) to the LP turbine case with the bolts (2) and (10), the spacer with a small diameter (11), two spacers (12) between the support assembly (4) and the LP turbine case, two spacers (13) between the support assembly (4) and the washer (1) at the bolt (2) and the washer (1).
(5) Do not fully tighten the bolts at this time.
(6) Attach the support assembly (7) to the LP turbine case with the bolts (9) and (3), the spacer with a small diameter (8), two spacers (6) between the support assembly (7) and the LP turbine case, two spacers (5) between the support assembly (7) and the washer (4) at the bolt (3) and the washer (4).
(7) Do not fully tighten the bolts at this time.
K. Installation of the Lower LP Turbine Cooling Air Duct on to the LP Turbine Case
(2) Make sure that the gaps on both sides of the separation line of the support assemblies, in the 3 o'clock and 9 o'clock positions are equal.
(3) Attach the lower LP turbine cooling air duct (4) to the LP turbine case with bolts (2) and (7), two spacers (1), the spacer with a small diameter (3), two spacers (5) and the washer (6).
(4) Do not fully tighten the bolts at this time.
(5) Attach the support assembly (2) to the LP turbine case with the bolts (4) and (11), the spacer with a small diameter (5), two spacers (1) between the support assembly (2) and the LP turbine case, two spacers (13) between the support assembly (2) and the washer (12) at the bolt (11) and the washer (12).
(6) Do not fully tighten the bolts at this time.
(7) Attach the support assembly (7) to the LP turbine case with the bolts (1) and (4), two spacers (2) between the support assembly (7) and the LP turbine case, two spacers (3) between the support assembly (7) and the washer (5), the spacer with a small diameter (11) and the washer (5).
(8) Do not fully tighten the bolts at this time.
(9) Engage the support assembly (6) on to the upper LP turbine cooling air duct tube ends.
(10) Engage the support assembly (8) on to the upper LP turbine cooling air duct tube ends.
(11) Attach the support assembly (6) to the LP turbine case with the bolts (11) and (3), the spacer with a small diameter (12), two spacers (13) between the support assembly (6) and the LP turbine case, two spacers (1) between the support assembly (6) and the washer (2) at the bolt (3) and the washer (2).
(12) Do not fully tighten the bolts at this time.
(13) Attach the support assembly (8) to the LP turbine case with the bolts (1) and (6), two spacers (3) between the support assembly (8) and the LP turbine case, two spacers (4) between the support assembly (8) and the washer (5), the spacer with a small diameter (2) and the washer (5).
(14) Do not fully tighten the bolts at this time.
Subtask 75-24-49-820-053-A ** ON A/C NOT FOR ALL NOTE: Lubricate all threads and abutment faces of nuts and bolts with anti-seize paste (Material No.V10-129A) to prevent seizure.
(1) Put the lower LP turbine cooling air duct in to position on the LP turbine case. (2) Make sure that the gaps on both sides of the separation line of the support assemblies, in the 3 o'clock and 9 o'clock positions are equal.
(3) Attach the lower LP turbine cooling air duct (4) to the LP turbine case with bolts (2) and (7), two spacers (1), the spacer with a small diameter (3), two spacers (5) and the washer (6).
(4) Do not fully tighten the bolts at this time.
(5) Attach the support assembly (2) to the LP turbine case with the bolts (4) and (11), the spacer with a small diameter (5), two spacers (1) between the support assembly (2) and the LP turbine case, two spacers (13) between the support assembly (2) and the washer (12) at the bolt (11) and the washer (12).
(6) Do not fully tighten the bolts at this time.
(7) Attach the support assembly (7) to the LP turbine case with the bolts (1) and (4), two spacers (2) between the support assembly (7) and the LP turbine case, two spacers (3) between the support assembly (7) and the washer (5), the spacer with a small diameter (11) and the washer (5).
(8) Do not fully tighten the bolts at this time.
(9) Engage the support assembly (6) on to the upper LP turbine cooling air duct tube ends.
(10) Engage the support assembly (8) on to the upper LP turbine cooling air duct tube ends.
(11) Attach the support assembly (6) to the LP turbine case with the bolts (11) and (3), the spacer with a small diameter (12), two spacers (13) between the support assembly (6) and the LP turbine case, two spacers (1) between the support assembly (6) and the washer (2) at the bolt (3) and the washer (2).
(12) Do not fully tighten the bolts at this time.
(13) Attach the support assembly (8) to the LP turbine case with the bolts (1) and (6), two spacers (3) between the support assembly (8) and the LP turbine case, two spacers (4) between the support assembly (8) and the washer (5), the spacer with a small diameter (2) and the washer (5).
(14) Do not fully tighten the bolts at this time.
L. Adjust the Upper and the Lower LP Turbine Cooling Air Ducts
(2) Start the examination at the upper and lower LP Turbine cooling air ducts at positions 4 and 8. Continue at the support assemblies at positions 1, 3. 5 and 7. Finally, examine the support assemblies at positions 2 and 6. Use the applicable support equipment
(3) Adjust the radial and axial clearances.
(a) Examine the clearances at tubes No. 3 between the LP turbine case and the tubes with the IAE1M14121 GAGE, CHECKING-GO/ NO GO. (Dimension C), identified by the green area, 0.24 in. (6.1 mm).
(b) Examine the clearances at tubes No. 8 between the LP turbine case and the tubes with the IAE1M14122 GAGE, CHECKING-GO/ NO GO. (Dimension D), identified by the green area, 0.24 in. (6.1 mm).
(c) Make sure that it is possible to put the checking gages between the LP turbine case and the tubes at positions 1 thru 8.
(d) If the radial dimensions C and D are incorrect, use the extended holes at the ACC front mounting flanges.
(e) If the axial dimensions D is incorrect, remove or insert spacers at the ACC front mounting flange.
(Ref. AMM TASK 70-23-11-911-013).
(5) TORQUE the bolts at the front flange to between 30 and 27 lbf.in (0.34 and 0.31 m.daN ) (Ref. AMM TASK 70-23-11-911-013).
(6) TORQUE the bolts at the rear to between 72 and 62 lbf.in (0.81 and 0.70 m.daN ) (Ref. AMM TASK 70-23-11-911-013).
(7) Examine the radial and axial clearances again and adjust them, if necessary, using the above procedure.
(8) TORQUE the bolt (4) to between 30 and 27 lbf.in (0.34 and 0.31 m.daN ). (Ref. AMM TASK 70-23-11-911-013)
Subtask 75-24-49-420-076-A ** ON A/C NOT FOR ALL NOTE: The adjustment is correct if:
(1) Examine the radial and axial clearances on tubes No. 3 and 8 next to the ducts at positions 4 and 8, and directly adjacent to the support assemblies at positions 1, 2, 3, 5, 6 and 7. - The go gage or the gage end of the checking gage, identified by the green area, can be put in between the LP turbine case and the LP turbine cooling air duct.
- The no go gage or the gage end of the checking gage, identified by the red area, cannot be put in between the LP turbine case and the LP turbine cooling air duct.
(2) Start the examination at the upper and lower LP Turbine cooling air ducts at positions 4 and 8. Continue at the support assemblies at positions 1, 3. 5 and 7. Finally, examine the support assemblies at positions 2 and 6. Use the applicable support equipment
(3) Adjust the radial and axial clearances.
(a) Examine the clearances at tubes No. 3 between the LP turbine case and the tubes with the IAE1M14121 GAGE, CHECKING-GO/ NO GO. (Dimension C), identified by the green area, 0.24 in. (6.1 mm).
(b) Examine the clearances at tubes No. 8 between the LP turbine case and the tubes with the IAE1M14122 GAGE, CHECKING-GO/ NO GO. (Dimension D), identified by the green area, 0.24 in. (6.1 mm).
(c) Make sure that it is possible to put the checking gages between the LP turbine case and the tubes at positions 1 thru 8.
(d) If the radial dimensions C and D are incorrect, use the extended holes at the ACC front mounting flanges.
(e) If the axial dimensions D is incorrect, remove or insert spacers at the ACC front mounting flange.
NOTE: For axial adjustment, a maximum of four spacers is permitted at positions 1, 2, 3, 5, 6 and 7, and a maximum of two spacers at positions 4 and 8.
(4) TORQUE the bolts which attach the support assemblies to the half loop clamps to between 30 and 27 lbf.in (0.34 and 0.31 m.daN ) (Ref. AMM TASK 70-23-11-911-013). (5) TORQUE the bolts at the front flange to between 30 and 27 lbf.in (0.34 and 0.31 m.daN )
(Ref. AMM TASK 70-23-11-911-013). (6) TORQUE the bolts at the rear to between 72 and 62 lbf.in (0.81 and 0.70 m.daN )
(Ref. AMM TASK 70-23-11-911-013). (7) Examine the radial and axial clearances again and adjust them, if necessary, using the above procedure.
(8) TORQUE the bolt (4) to between 30 and 27 lbf.in (0.34 and 0.31 m.daN )
. (Ref. AMM TASK 70-23-11-911-013)M. Install the left and the right High Pressure (HP) ACC Manifold tubes (Ref. AMM TASK 75-24-48-400-010).
Subtask 75-24-49-420-077-A ** ON A/C NOT FOR ALL N. Installation of the Tube Connector on to the LP Turbine ACC
PRE SBE 75-0051
(2) Put the tube connector (11) in position between the upper and lower LP turbine cooling air ducts.
(3) Attach the clamps (7) and (2) loosely with the bolts (6) and (4) and the washers (5) and (3) to the support assemblies.
(4) Move the periseal connectors (9) and (16), from their retracted positions, above the upper and lower LP turbine cooling air ducts.
(5) Make sure that each pin of the retaining clamps (10) and (15) engages in the location holes in the tube connector (11).
END OF PRE SBE 75-0051
Subtask 75-24-49-820-054-A ** ON A/C NOT FOR ALL PRE SBE 75-0051
NOTE: Lubricate all the threads and the abutment faces of the nuts and the bolts with anti-seize paste (Material No.V10-129A) to prevent seizure.
(1) Install the bolts (17), the washers (18) and the spacer (12) that attach the T-piece angle bracket of the tube connector (11) to the support assembly. (2) Put the tube connector (11) in position between the upper and lower LP turbine cooling air ducts.
(3) Attach the clamps (7) and (2) loosely with the bolts (6) and (4) and the washers (5) and (3) to the support assemblies.
(4) Move the periseal connectors (9) and (16), from their retracted positions, above the upper and lower LP turbine cooling air ducts.
(5) Make sure that each pin of the retaining clamps (10) and (15) engages in the location holes in the tube connector (11).
END OF PRE SBE 75-0051
O. Adjustment of the Tube Connector
PRE SBE 75-0051
(1) Examine and adjust the radial clearance, Dimension B.
(a) Examine the radial clearance with the IAE1M14118 GAGE, CHECKING - GO/NO GO.
(b) Put the checking gage between the front flange outer diameter of the LP turbine case and the front flange of the tube connector front opening.
(c) Make sure that the checking gage, identified by the green area, can be put in easily.
(d) If it is not possible, adjust the radial clearance by changing the spacers on the T-piece angle bracket.
(e) Make sure that it is not possible to put in the red area of the checking gage.
(f) If it is possible, adjust the radial clearance by changing the spacers on the T-piece angle bracket.
(2) Examine and adjust the axial clearance, Dimension A.
(a) Examine the axial clearance with the IAE1M14117 GAGE,CHECKING-GO NO GO.
(b) Put the checking gage between the rear side of the LP turbine case front flange and the tube connector front flange.
(c) Make sure that the checking gage, identified by the green area, can be put in easily.
(d) If it is not possible, adjust the axial clearance with the elongated holes at the T-piece angle bracket.
(e) Make sure that it is not possible to put in the red area of the checking gage.
(f) If it is possible, adjust the axial clearance with the elongated holes at the T-piece angle bracket.
(3) TORQUE the bolts (6) and (4) of the clamps (7) and (2) to between 40 and 36 lbf.in (0.45 and 0.41 m.daN ) (Ref. AMM TASK 70-23-11-911-013).
(4) TORQUE the bolts (17) on the T-piece angle bracket to between 40 and 36 lbf.in (0.45 and 0.41 m.daN ) (Ref. AMM TASK 70-23-11-911-013).
(5) Install the nuts and the bolts of the two retaining clamps (10) and (15).
(6) Tighten the nuts of the retaining clamps (10) and (15) until the lugs of the clamps attach the opposite flange.
(7) Examine the radial and axial clearances again and adjust them, if necessary, using the above procedure.
(8) Install the ACC rear duct.
(9) Move the periseal housing (14) from the retracted position on the ACC rear duct to the T-piece of the tube connector.
(10) Make sure that the periseal housing engages below the three spring clips at the T-piece of the tube connector.
(11) Safety the spring clips with anti-seize compound (Material No.V10-094) .
END OF PRE SBE 75-0051
Subtask 75-24-49-420-078-A ** ON A/C NOT FOR ALL PRE SBE 75-0051
(1) Examine and adjust the radial clearance, Dimension B.
(a) Examine the radial clearance with the IAE1M14118 GAGE, CHECKING - GO/NO GO.
(b) Put the checking gage between the front flange outer diameter of the LP turbine case and the front flange of the tube connector front opening.
(c) Make sure that the checking gage, identified by the green area, can be put in easily.
(d) If it is not possible, adjust the radial clearance by changing the spacers on the T-piece angle bracket.
(e) Make sure that it is not possible to put in the red area of the checking gage.
(f) If it is possible, adjust the radial clearance by changing the spacers on the T-piece angle bracket.
(2) Examine and adjust the axial clearance, Dimension A.
(a) Examine the axial clearance with the IAE1M14117 GAGE,CHECKING-GO NO GO.
(b) Put the checking gage between the rear side of the LP turbine case front flange and the tube connector front flange.
(c) Make sure that the checking gage, identified by the green area, can be put in easily.
(d) If it is not possible, adjust the axial clearance with the elongated holes at the T-piece angle bracket.
(e) Make sure that it is not possible to put in the red area of the checking gage.
(f) If it is possible, adjust the axial clearance with the elongated holes at the T-piece angle bracket.
(3) TORQUE the bolts (6) and (4) of the clamps (7) and (2) to between 40 and 36 lbf.in (0.45 and 0.41 m.daN )
(Ref. AMM TASK 70-23-11-911-013). (4) TORQUE the bolts (17) on the T-piece angle bracket to between 40 and 36 lbf.in (0.45 and 0.41 m.daN )
(Ref. AMM TASK 70-23-11-911-013). (5) Install the nuts and the bolts of the two retaining clamps (10) and (15).
(6) Tighten the nuts of the retaining clamps (10) and (15) until the lugs of the clamps attach the opposite flange.
(7) Examine the radial and axial clearances again and adjust them, if necessary, using the above procedure.
(8) Install the ACC rear duct.
(9) Move the periseal housing (14) from the retracted position on the ACC rear duct to the T-piece of the tube connector.
(10) Make sure that the periseal housing engages below the three spring clips at the T-piece of the tube connector.
(11) Safety the spring clips with anti-seize compound (Material No.V10-094) .
NOTE: Lubricate all the threads and the abutment faces of the nuts and the bolts with anti-seize compound (Material No.V10-094) to prevent seizure.
END OF PRE SBE 75-0051
P. Installation of the Tube Connector on to the LP Turbine ACC
POST SBE 75-0051: LP Turbine ACC Connector (T-piece) as precision casting
(2) Put the tube connector (11) in position between the upper and lower LP turbine cooling air ducts.
(3) Attach the clamps (7) and (2) loosely with the bolts (6) and (4) and the washer (5) and (3) to the support assemblies.
(4) Move the periseal connectors (9) and (17) from their retracted positions above the upper and lower LP turbine cooling air ducts.
(5) Make sure that each pin of the retaining clamps (10) and (16) engages in the location holes in the tube connector (11).
END OF POST SBE 75-0051
Subtask 75-24-49-820-055-A ** ON A/C NOT FOR ALL POST SBE 75-0051: LP Turbine ACC Connector (T-piece) as precision casting
NOTE: Lubricate all the threads and the abutment faces of the nuts and the bolts with anti-seize paste (Material No.V10-129A) to prevent seizure.
(1) Install the bolts (18), the washers(19) and the spacer (12) that attach the T-piece angle bracket of the tube connector (11) to the support assembly. (2) Put the tube connector (11) in position between the upper and lower LP turbine cooling air ducts.
(3) Attach the clamps (7) and (2) loosely with the bolts (6) and (4) and the washer (5) and (3) to the support assemblies.
(4) Move the periseal connectors (9) and (17) from their retracted positions above the upper and lower LP turbine cooling air ducts.
(5) Make sure that each pin of the retaining clamps (10) and (16) engages in the location holes in the tube connector (11).
END OF POST SBE 75-0051
Q. Adjustment of the Tube Connector
POST SBE 75-0051: LP Turbine ACC Connector (T-piece) as precision casting
(1) Examine and adjust the radial clearance, dimension B.
(a) Examine the radial clearance with the IAE1M14118 GAGE, CHECKING - GO/NO GO.
(b) Put the checking gage between the front flange outer diameter of the LP turbine case and the front flange of the tube connector front opening.
(c) Make sure that the checking gage, identified by the green area, can be put in easily.
(d) If it is not possible, adjust the radial clearance by changing the spacers on the T-piece angle bracket.
(e) Make sure that it is not possible to put in the red area of the checking gage.
(f) If it is possible, adjust the radial clearance by changing the spacers on the T-piece angle bracket.
(2) Examine and adjust the axial clearance, dimension A.
(a) Examine the axial clearance with the IAE1M14117 GAGE,CHECKING-GO NO GO.
(b) Put the checking gage between the rear side of the LP turbine case front flange and the tube connector front flange.
(c) Make sure that the checking gage, identified by the green area, can be put in easily.
(d) If it is not possible, adjust the axial clearance with the elongated holes at the T-piece angle bracket.
(e) Make sure that it is not possible to put in the red area of the checking gage.
(f) If it is possible, adjust the axial clearance with the elongated holes at the T-piece angle bracket.
(3) TORQUE the bolts (6) and (4) of the clamps (7) and (2) to between 30 and 27 lbf.in (0.34 and 0.31 m.daN ) (Ref. AMM TASK 70-23-11-911-013).
(4) TORQUE the bolt (18) on the T-piece angle bracket to between 30 and 27 lbf.in (0.34 and 0.31 m.daN ) (Ref. AMM TASK 70-23-11-911-013).
(5) Install the nuts and the bolts of the two retaining clamps (10) and (16).
(6) Tighten the nuts of the retaining clamps (10) and (16) until the lugs of the clamps attach the opposite flange.
(7) Examine the radial and axial clearances again and adjust them, if necessary, using the above procedure.
(8) Install the ACC rear duct.
(9) Move the periseal housing (15) from the retracted position on the ACC rear duct to the T-piece of the tube connector.
(10) Install the two bolts (14) and the two periseal clamps (13) which safety the periseal the housing at the T-piece of the tube connector.
(11) TORQUE the bolts to between 40 and 36 lbf.in (0.45 and 0.41 m.daN ) (Ref. AMM TASK 70-23-11-911-013).
END OF POST SBE 75-0051
5. Close-upPOST SBE 75-0051: LP Turbine ACC Connector (T-piece) as precision casting
(1) Examine and adjust the radial clearance, dimension B.
(a) Examine the radial clearance with the IAE1M14118 GAGE, CHECKING - GO/NO GO.
(b) Put the checking gage between the front flange outer diameter of the LP turbine case and the front flange of the tube connector front opening.
(c) Make sure that the checking gage, identified by the green area, can be put in easily.
(d) If it is not possible, adjust the radial clearance by changing the spacers on the T-piece angle bracket.
(e) Make sure that it is not possible to put in the red area of the checking gage.
(f) If it is possible, adjust the radial clearance by changing the spacers on the T-piece angle bracket.
(2) Examine and adjust the axial clearance, dimension A.
(a) Examine the axial clearance with the IAE1M14117 GAGE,CHECKING-GO NO GO.
(b) Put the checking gage between the rear side of the LP turbine case front flange and the tube connector front flange.
(c) Make sure that the checking gage, identified by the green area, can be put in easily.
(d) If it is not possible, adjust the axial clearance with the elongated holes at the T-piece angle bracket.
(e) Make sure that it is not possible to put in the red area of the checking gage.
(f) If it is possible, adjust the axial clearance with the elongated holes at the T-piece angle bracket.
(3) TORQUE the bolts (6) and (4) of the clamps (7) and (2) to between 30 and 27 lbf.in (0.34 and 0.31 m.daN )
(Ref. AMM TASK 70-23-11-911-013). (4) TORQUE the bolt (18) on the T-piece angle bracket to between 30 and 27 lbf.in (0.34 and 0.31 m.daN )
(Ref. AMM TASK 70-23-11-911-013). (5) Install the nuts and the bolts of the two retaining clamps (10) and (16).
(6) Tighten the nuts of the retaining clamps (10) and (16) until the lugs of the clamps attach the opposite flange.
(7) Examine the radial and axial clearances again and adjust them, if necessary, using the above procedure.
(8) Install the ACC rear duct.
(9) Move the periseal housing (15) from the retracted position on the ACC rear duct to the T-piece of the tube connector.
(10) Install the two bolts (14) and the two periseal clamps (13) which safety the periseal the housing at the T-piece of the tube connector.
(11) TORQUE the bolts to between 40 and 36 lbf.in (0.45 and 0.41 m.daN )
(Ref. AMM TASK 70-23-11-911-013). END OF POST SBE 75-0051
Subtask 75-24-49-410-057-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 75-24-49-440-051-A ** ON A/C NOT FOR ALL Subtask 75-24-49-410-054-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