W DOC AIRBUS | AMM A320F

Installation of the Buffer Air Tubes [PW11]

TASK 75-26-49-400-801-A
Installation of the Buffer Air Tubes

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 400
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 1M(3 FT)
No specific
1
MALLET - SOFT FACE
No specific
1
WRENCH - STANDARD
No specific
Torque wrench: range to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T
No specific
Torque wrench: range to between 85 and 70 lbf.in (0.96 and 0.79 m.daN ) T
No specific
Torque wrench: range to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T
No specific
Torque wrench: range to between 110 and 100 lbf.in (1.24 and 1.13 m.daN ) T
No specific
Torque wrench: range to between 135 and 120 lbf.in (1.53 and 1.36 m.daN ) T
No specific
Torque wrench: range to between 525 and 475 lbf.in (5.93 and 5.37 m.daN ) T
No specific
Torque wrench: range to between 1050 and 950 lbf.in (11.87 and 10.74 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.P03-001)
lubricant, aircraft turbine engine (synthetic base)
(Material No.P05-395)
beeswax (was: P06-015)
(Material No.P05-396)
paraffin wax blend
(Material No.P06-054)
compound, paste, anti-seize
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
109
GASKET
EIPC 75-26-01-01-050
96
GASKET
EIPC 75-26-01-01-060
78
GASKET
EIPC 75-26-01-01-070
77
METERING PLATE
EIPC 75-26-01-01-080
131
GASKET
EIPC 75-26-01-01-090
54
GASKET
EIPC 75-26-49-01-010
67
METERING SEAL
EIPC 75-26-49-01-080
21
GASKET
EIPC 75-26-49-02-010
39
GASKET
EIPC 75-26-49-02-020
1
METERING SEAL
EIPC 75-26-49-02-030
44
GASKET
EIPC 75-26-49-02-030
10
METERING SEAL
EIPC 75-26-49-02-090
40
GASKET
EIPC 75-26-49-02-090
11
GASKETS
EIPC 75-26-49-02-170
85
GASKET
EIPC 75-26-49-03-010
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 71-00-00-790-802-A
Test No. 1 - Pneumatic Leak Test
TASK 71-00-00-860-833-A
Procedure to Prevent Engine Motoring
TASK 71-13-00-010-802-A
Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A
Closing of the Fan Cowl Doors
TASK 75-25-49-400-802-A
Installation of the Turbine Cooling Air System
TASK 75-26-01-400-801-A
Installation of the Buffer Air Heat Exchanger
TASK 75-26-03-400-801-A
Installation of the Buffer Air Check Valve
TASK 78-30-00-040-805-A
Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A
Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-802-A
Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A
Closing of the Thrust Reverser Cowl-Doors
F Installation of the Buffer Air Tubes - Manifold (AP26) and Tube (AP29)
F Installation of the Buffer Air Tubes - Tube (AD06)
F Installation of the Buffer Air Tubes - Tube (AP27)
F Installation of the Buffer Air Tubes - Tube (AP24)
F Installation of the Buffer Air Tubes - Tube (AP28)
F Installation of the Buffer Air Tubes - Tube (AD07)
F Installation of the Buffer Air Tubes - Tubes (AP22) and (AS41)
3. Job Set-up
Subtask 75-26-49-941-051-A ** ON A/C NOT FOR ALL
A. Safety Precautions
   (1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833)
Subtask 75-26-49-010-052-A ** ON A/C NOT FOR ALL
B. Get Access
   (1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR
   (2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 75-26-49-040-051-A ** ON A/C NOT FOR ALL
C. Deactivation of the Thrust Reverser System for Maintenance
WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
   (1) Make sure that you did the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805).
Subtask 75-26-49-010-053-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Make sure that the left thrust reverser cowl-door is open (Ref. AMM TASK 78-36-00-010-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL
4. Procedure
CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 75-26-49-420-050-D ** ON A/C NOT FOR ALL
CAUTION: USE A SECOND WRENCH TO HOLD THE MATING PARTS WHEN YOU LOOSEN OR TIGHTEN THE TUBE OR HOSE NUTS. IF YOU DO NOT OBEY THIS CAUTION, YOU CAN TWIST OR CAUSE DAMAGE TO THE TUBES OR HOSES.
A. Installation of the Buffer Air Tubes
F Installation of the Buffer Air Tubes - Tubes (AP22) and (AS41) ** ON A/C NOT FOR ALL
NOTE: Use the second WRENCH - STANDARD as necessary.
CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.
   (1) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.

POST SB C-72-00-0058A

   (2) Install the manifold (AP21) (6) on the Compressor Intermediate Case (CIC) and the CIC firewall as follows:
     (a) Apply the P06-054compound, paste, anti-seize to the threads of the three bolts (3), the bolt (5), the two bolts (8) and the three bolts (9).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (b) Apply the paraffin wax blend (Material No.P05-396) or the P05-395beeswax (was: P06-015) to the new EIPC 75-26-49-02-030 METERING SEAL (1) and the EIPC 75-26-49-02-090 METERING SEAL (10) and the two new EIPC 75-26-49-02-170 GASKETS (11).
     (c) Install the two gaskets (11) and the two metering seals (1) and (10) on the manifold (AP21) (6).
     (d) Install the manifold (AP21) (6) and the bracket (2) on the CIC with the three bolts (3).
     (e) Install the manifold (AP21) (6) on the CIC with the three bolts (9).
     (f) Install the manifold (AP21) (6) on the CIC firewall with the two bolts (8).
     (g) Install the bracket (2) on the clamp (4) with the bolt (5).
     (h) TORQUE the three bolts (3) and (9) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
     (i) TORQUE the two bolts (8) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
     (j) TORQUE the bolt (5) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T.

END OF POST SB C-72-00-0058A

   (3) Install the duct (AP34) (7) on the CIC firewall as follows:
     (a) Apply the P06-054compound, paste, anti-seize to the threads of the three bolts (8).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (b) Install the duct (AP34) (7) on the CIC firewall with the three bolts (8).
     (c) TORQUE the three bolts (8) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
   (4) Install the buffer air check valve (Ref. AMM TASK 75-26-03-400-801).
   (5) Install the tube (AP23) (22) on the duct (AP34) and the CIC as follows:
     (a) Apply the paraffin wax blend (Material No.P05-396) or the P05-395beeswax (was: P06-015) to the new EIPC 75-26-49-02-030 METERING SEAL (1) and the two new EIPC 75-26-49-02-170 GASKETS (11) and the new EIPC 75-26-49-02-010 GASKET (21).
     (b) Install the metering seal (1) and the gaskets (11) and (21) on the tube (AP23) (22).
     (c) Apply the P06-054compound, paste, anti-seize to the threads of the six bolts (3) and the bolt (24).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (d) Install the tube (AP23) (22) on the duct (AP34) with the three bolts (3).
     (e) TORQUE the three bolts (3) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
     (f) Install the tube (AP23) (22) and the bracket (25) on the CIC with the three bolts (3).
     (g) TORQUE the three bolts (3) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
     (h) Install the tubes (CR16) and (CP16) on the bracket (25) with the clamp (23) and the bolt (24).
     (i) TORQUE the bolt (24) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T.

POST SB C-75-00-0007A

   (6) Install the tube (AP22) (38) on the duct (AP34) and the Low Pressure Compressor (LPC) buffer air valve as follows:
     (a) Apply the paraffin wax blend (Material No.P05-396) or the P05-395beeswax (was: P06-015) to the new EIPC 75-26-49-02-020 GASKET (39) and the EIPC 75-26-49-02-030 GASKET (44).
     (b) Install the two gaskets (39) and (44) on the tube (AP22) (38).
     (c) Apply the P03-001lubricant, aircraft turbine engine (synthetic base) to the threads of the three nuts (42).
     (d) Install the tube (AP22) (38) and the bracket (35) on the LPC buffer air valve with the three bolts (36) and the nuts (42).
     (e) TORQUE the three nuts (42) to between 135 and 120 lbf.in (1.53 and 1.36 m.daN ) T.
     (f) Apply the P06-054compound, paste, anti-seize to the threads of the three bolts (3) and the two bolts (5).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (g) Install the tube (AP22) (38) and the bracket (43) on the duct (AP34) with the three bolts (3).
     (h) TORQUE the three bolts (3) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
     (i) Install the tube (AP22) (38) on the bracket with the clamp (37) and the two bolts (5).
     (j) TORQUE the two bolts (5) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T.

END OF POST SB C-75-00-0007A

   (7) Install the tube (AS41) (41) on the air pressure sensor and the duct (AP34) as follows:
     (a) Apply the paraffin wax blend (Material No.P05-396) or the P05-395beeswax (was: P06-015) to the new EIPC 75-26-49-02-090 GASKET (40).
     (b) Install the gasket (40) on the tube (AS41) (41).
     (c) Connect the tube (AS41) (41) B-nut to the air pressure sensor fingertight.
     (d) Apply the P06-054compound, paste, anti-seize to the threads of the two bolts (3).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (e) Install the tube (AS41) (41) on the duct (AP34) with the two bolts (3).
     (f) TORQUE the two bolts (3) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
     (g) TORQUE the tube (AS41) (41) B-nut to between 110 and 100 lbf.in (1.24 and 1.13 m.daN ) T.
   (8) Install the manifold (AP26) (55) on the manifold (AP21) and the duct (AP34) as follows:
     (a) Apply the paraffin wax blend (Material No.P05-396) or the P05-395beeswax (was: P06-015) to the new EIPC 75-26-49-02-020 GASKET (39) and the EIPC 75-26-49-01-010 GASKET (54).
     (b) Install the gasket (39) on the duct (AP34).
     (c) Install the gasket (54) on the manifold (AP21).
     (d) Apply the P06-054compound, paste, anti-seize to the threads of the three bolts (3) and the three bolts (8).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (e) Install the manifold (AP26) (55) on the manifold (AP21) with the three bolts (8) fingertight.
     (f) Install the manifold (AP26) (55) on the duct (AP34) with the three bolts (3).
     (g) TORQUE the three bolts (3) and the three bolts (8) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
   (9) Install the tube (AP29) (66) on the manifold (AP30) and the manifold (AP26) as follows:
     (a) Apply the paraffin wax blend (Material No.P05-396) or the P05-395beeswax (was: P06-015) to the new EIPC 75-26-49-01-080 METERING SEAL (67) and the new EIPC 75-26-49-02-010 GASKET (21).
     (b) Install the metering seal (67) and the gasket (21) on the tube (AP29) (66).
     (c) Apply the P06-054compound, paste, anti-seize on the threads of the three bolts (3) and the two bolts (5).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (d) Connect the tube (AP29) (66) B-nut to the manifold (AP30) fingertight.
     (e) Install the tube (AP29) (66) on the manifold (AP26) with the three bolts (3).
     (f) TORQUE the three bolts (3) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
     (g) Install the tube (AP29) (66) on the two brackets with the two clamps (65) and the bolts (5).
     (h) TORQUE the two bolts (5) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T.
     (i) TORQUE the tube (AP29) (66) B-nut to between 1050 and 950 lbf.in (11.87 and 10.74 m.daN ) T.
   (10) Install the buffer air heat exchanger (Ref. AMM TASK 75-26-01-400-801).
   (11) Install the tube (AD06) (82) on the CIC and the buffer air heat exchanger as follows:
     (a) Apply the paraffin wax blend (Material No.P05-396) or the P05-395beeswax (was: P06-015) to the new EIPC 75-26-01-01-080 METERING PLATE (77) and the new EIPC 75-26-01-01-070 GASKET (78) and the EIPC 75-26-49-03-010 GASKET (85).
     (b) Install the metering plate (77) and the two gaskets (78) and (85) on the tube (AD06) (82).
     (c) Apply the P06-054compound, paste, anti-seize to the threads of the two bolts (80) and the four bolts (83).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (d) Install the tube (AD06) (82) and the bracket (84) on the CIC with the four bolts (83).
     (e) TORQUE the four bolts (83) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T in small increments until the same TORQUE indication holds.
     (f) Apply the P03-001lubricant, aircraft turbine engine (synthetic base) on the thread of the coupling (79).
     (g) Install the tube (AD06) (82) on the heat exchanger with the coupling (79).
     (h) TORQUE the coupling (79) to between 85 and 70 lbf.in (0.96 and 0.79 m.daN ) T.
     (i) Tap the coupling with the MALLET - SOFT FACE.
     (j) TORQUE the coupling (79) again to between 85 and 70 lbf.in (0.96 and 0.79 m.daN ) T.
     (k) Install the tube (AD06) (82) on the two brackets with the two clamps (81) and the bolts (80).
     (l) TORQUE the two bolts (80) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T.
     (m) Install the wiring harness (WC11) on the spring clip.
   (12) Install the tube (AP27) (95) on the buffer air heat exchanger and the tube (AP102) as follows:
     (a) Apply the paraffin wax blend (Material No.P05-396) or the P05-395beeswax (was: P06-015) to the new EIPC 75-26-01-01-060 GASKET (96).
     (b) Install the gasket (96) on the tube (AP27) (95).
     (c) Apply the P06-054compound, paste, anti-seize to the threads of the three bolts (8).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (d) Install the tube (AP27) (95) to the buffer air heat exchanger with the three bolts (8).
     (e) TORQUE the three bolts (8) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T in small increments until the same TORQUE indication holds.
     (f) Connect the tube (AP27) (95) B-nut to the tube (AP102).
     (g) TORQUE the B-nut to between 525 and 475 lbf.in (5.93 and 5.37 m.daN ) T.
   (13) Install the tube (AP24) (110) on the buffer air heat exchanger and the duct (AP31) as follows:
     (a) Apply the paraffin wax blend (Material No.P05-396) or the P05-395beeswax (was: P06-015) to the new EIPC 75-26-01-01-060 GASKET (96) and the EIPC 75-26-01-01-050 GASKET (109).
     (b) Install the gaskets (96) and (109) on the tube (AP24) (110).
     (c) Apply the P06-054compound, paste, anti-seize to the threads of the bolt (5), the three bolts (8), the bolt (80) and the three nuts (106).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (d) Install the tube (AP24) (110) and the bracket (112) to the duct (AP31) with the three bolts (111) and the three nuts (106).
     (e) TORQUE the three nuts (106) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T in small increments until the same TORQUE indication holds.
     (f) Install the tube (AP24) (110) and the bracket (108) on the buffer air heat exchanger with the three bolts (8).
     (g) TORQUE the three bolts (8) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T in small increments until the same TORQUE indication holds.
     (h) Install the tube (AP24) (110) on the bracket with the clamp (107) and the bolt (80).
     (i) TORQUE the bolt (80) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T.
     (j) Install the clamp and the manifold (DR121) on the bracket (108) with the bolt (5).
     (k) TORQUE the bolt (5) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T.
     (l) Connect the wiring harness (WC05) to the two spring clips.
     (m) Connect the Environmental Control System (ECS) harness to the two spring clips.
   (14) Install the tube (AP28) (121) on the tube (AP27) and the tube (AP101) as follows:
     (a) Connect the tube (AP28) (121) B-nut to the tube (AP27) fingertight.
     (b) Connect the tube (AP28) (121) B-nut to the tube (AP101).
     (c) TORQUE the tube (AP28) (121) B-nuts to between 525 and 475 lbf.in (5.93 and 5.37 m.daN ) T.
   (15) Install the tube (AP43) (Ref. AMM TASK 75-25-49-400-802).
   (16) Install the tube (AD07) (133) on the buffer air heat exchanger as follows:
     (a) Apply the paraffin wax blend (Material No.P05-396) or the P05-395beeswax (was: P06-015) to the new EIPC 75-26-01-01-090 GASKET (131).
     (b) Install the gasket (131) on the buffer air heat exchanger.
     (c) Apply the P03-001lubricant, aircraft turbine engine (synthetic base) to the threads of the coupling (132).
     (d) Install the tube (AD07) (133) on the buffer air heat exchanger with the coupling (132).
     (e) TORQUE the coupling (132) to between 85 and 70 lbf.in (0.96 and 0.79 m.daN ) T.
     (f) Tap the coupling with the MALLET - SOFT FACE.
     (g) TORQUE the coupling (132) again to between 85 and 70 lbf.in (0.96 and 0.79 m.daN ) T.
     (h) Apply the P06-054compound, paste, anti-seize to the threads of the two bolts (5).
       1 For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet-application.
     (i) Install the tube (AD07) (133) on the bracket with the clamp (134) and the two bolts (5).
     (j) TORQUE the two bolts (5) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T.
   (17) Examine the assembly for the foreign objects, damage and correct assembly.
5. Close-up
Subtask 75-26-49-410-050-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 left thrust reverser cowl-door (Ref. AMM TASK 78-36-00-410-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL
Subtask 75-26-49-440-050-A ** ON A/C NOT FOR ALL
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 75-26-49-410-051-A ** ON A/C NOT FOR ALL
C. Close Access
   (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
   (2) Remove the access platform(s).
   (3) Remove the WARNING NOTICE(S).
Subtask 75-26-49-790-050-A ** ON A/C NOT FOR ALL
D. Test
   (1) Do the test No.1 - Pneumatic Leak Test (Ref. AMM TASK 71-00-00-790-802).
[Rev.10 from 2021] 2026.04.01 03:13:25 UTC
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