W DOC AIRBUS | AMM A320F

Installation of the Bleed Air Ducts


TASK 36-11-48-400-802-A
Installation of the Bleed Air Ducts


WARNING: MAKE SURE THAT THE SAFETY DEVICES AND THE WARNING NOTICES ARE IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 521
ZONE: 621
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
PLUG - BLANKING
No specific
AR
SAFETY BARRIER(S)
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 5.10 and 3.90 m.N (45.13 and 34.51 lbf.in ) T
No specific
Torque wrench: range to between 7.90 and 5.60 m.N (69.91 and 49.56 lbf.in ) T
98D27803000000
1
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.04SAB2)
Varnish Polyurethane-- Marking Structure
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.12ACC1)
Corrosion Preventive Compound-Heavy Duty Soft Film -
(Material No.14QAD1)
Wire-- Stainless Steel Braided -
(Material No.14QFB1)
Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
521
INBOARD FIXED L.E STRUCTURE
621
INBOARD FIXED L.E STRUCTURE
521AB, 521BB, 521BT, 521CB, 521EB, 621AB, 621BB, 621BT, 621CB, 621EB
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
35
SEAL
AIPC 36-11-85-01-180
37
SEAL
AIPC 36-11-85-01-180
41
SEAL
AIPC 36-11-85-01-180
70
SEAL
AIPC 36-11-85-01-180
95
SEAL
AIPC 36-11-85-01-440
97
SEAL
AIPC 36-11-85-01-440
105
COTTER PINS
AIPC 36-11-85-01-510
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 20-28-00-912-802-A
Electrical Bonding - General Maintenance Procedure
TASK 24-92-00-000-802-A
Removal of the Pylon Power Feeder-Cables
TASK 24-92-00-400-802-A
Installation of the Pylon Power Feeder-Cables
TASK 27-00-00-080-002-A
Removal of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 27-00-00-480-002-A
Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 27-80-00-866-004-A
Extending the Slats on the Ground
TASK 27-80-00-866-005-A
Retracting the Slats on the Ground
TASK 30-11-51-400-001-A
Installation of the Wing Anti-Ice Control-Valve
TASK 36-11-17-400-001-A
Installation of the Heat-Exchanger Outlet-Temperature Sensor
TASK 36-11-48-790-001-A
Perform Leak Check on Bleed Air Ducting in Wing Area between Bleed Air Precooler, Wing Anti Ice Valve and Wing/Fuselage Connection
TASK 54-51-17-000-804-A
Removal of the Pylon-to-Wing Forward Attach-Fitting at RIB5
TASK 54-51-17-400-804-A
Installation of the Pylon-to-Wing Forward Attach-Fitting at RIB5
TASK 57-41-37-000-004-A
Removal of the Pressure Relief Panels
TASK 57-41-37-000-005-A
Removal of the NACA Duct Panel
TASK 57-41-37-000-009-A
Removal of the Access Panel
TASK 57-41-37-400-002-A
Installation of the Pressure Relief Panels
TASK 57-41-37-400-005-A
Installation of the NACA Duct Panel
TASK 57-41-37-400-009-A
Installation of the Access Panel
3. Job Set-up
Subtask 36-11-48-941-061-A ** ON A/C NOT FOR ALL
A. Safety Precautions
   (1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
   (2) On AIR COND panel 30VU, make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to operate the pneumatic systems.
Subtask 36-11-48-860-065-A ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) Make sure that the slats are fully extended (Ref. AMM TASK 27-80-00-866-004).
   (2) On center pedestal panel 114VU:
     (a) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is installed in position on the flap/slat control lever (Ref. AMM TASK 27-00-00-480-002).
     (b) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to operate the flap/slat controls.
Subtask 36-11-48-865-075-A ** ON A/C NOT FOR ALL
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUENGINE/2/FADEC A/AND EIU 22KS2A05
49VUENGINE/1/FADEC A/AND EIU 12KS1A04
49VUENGINE/1 AND 2/IGN/SYS A1JHA03
49VUAIR BLEED/ENG 1/CTL2HA1D11
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C NOT FOR ALL
121VUENGINE/ENG2/FADEC B/AND EIU24KS2Q40
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R41
** ON A/C NOT FOR ALL
121VUENGINE/IGN/ENG2/SYS B3JH2P42
121VUENGINE/IGN/ENG1/SYS B3JH1P41
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
** ON A/C NOT FOR ALL
121VUENGINE/ENG2/FADEC B/AND EIU24KS2R41
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R40
** ON A/C NOT FOR ALL
122VUAIR BLEED/ENG 2/CTL2HA2Z22
Subtask 36-11-48-010-067-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position below the applicable access panels.
   (2) Make sure that the applicable access panels are removed:
     (a) For the left wing:
     (b) For the right wing:
4. Procedure
NOTE: During the installation of the ducts, the dimension X stays constant plus or minus 2.0 mm (0.08 in.). You can examine the dimension around the full circumference of the duct.
Subtask 36-11-48-420-097-A ** ON A/C NOT FOR ALL
A. Preparation for Installation
F Bleed-air Duct Connections ** ON A/C NOT FOR ALL
   (1) Remove the PLUG - BLANKING from the bleed air ducts and the anti ice valve.
   (2) Clean the component interfaces and the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
   (3) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (4) Do an inspection of the component interfaces and the adjacent area.
   (5) For the right wing only, do the steps that follow:
     (a) Examine the Integrated Drive Generator (IDG) cables and the pylon forward fitting for signs of damage.
       1 As necessary, replace the worn components:
Subtask 36-11-48-420-098-A ** ON A/C NOT FOR ALL
B. Installation of the Bleed Air Ducts between the Pylon and the Anti Ice Valve
   (1) Put the duct assembly (123) in position.
   (2) Install the insulation gasket (124), the washers (125) and the bolts (126).
   (3) Carefully put the duct assembly (130) through the vapor seal (129) into position with the duct assembly (123).
   (4) Install the clamp (127).
   (5) TORQUE the clamp (127) to between 5.10 and 3.90 m.N (45.13 and 34.51 lbf.in ) T.
   (6) Make sure that the clamp (127) is installed in the correct position.
   (7) Tighten the vapor seal (129) around the duct assembly (130).
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
   (8) Safety the vapor seal (129) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (9) Put the half clamps (138) and (139) into position on the duct assembly (130).
   (10) Install the washers (133) and (132) between the half clamps (138) and (139) with the screws (131) and the nuts (134).
   (11) Adjust the quantity of washers (132) and (133) to hold the duct assembly (130) tightly with the half clamps (138) and (139).
   (12) Install the link assemblies of the half clamp (138) in position with the bolts (137), the washers (136) and the nuts (135).
   (13) Connect the bonding leads (120) and (119) with the bolt (118), the washer (121) and the nut (122).
   (14) Do a check of the electrical bonding (
Ref. AMM TASK 20-28-00-912-802).
   (15) Install the anti ice valve on the duct assembly (130) (Ref. AMM TASK 30-11-51-400-001).
   (16) If you removed the only bleed air duct, then:
     (a) Install the seals in the flexible connector (96) that follow:
     (b) Install the flexible connector (96) on the duct assembly (123).
     (c) Install the duct assembly (94) in the flexible connector (96).
     (d) Install the clamp (104) on the bleed air duct (89).
     (e) TORQUE the clamp (104) to between 5.10 and 3.90 m.N (45.13 and 34.51 lbf.in ) T.
     (f) Make sure that the clamp (104) is installed in the correct position.
     (g) Connect the bonding lead (99) with the screw (93), the washer (100) and the nut (101) on the duct assembly (94).
     (h) Do a check of the electrical bonding (
Ref. AMM TASK 20-28-00-912-802).
     (i) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the clamp (104).
   (17) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the items that follow:
  • The washers (125) and the bolts (126)
  • The clamp (127)
  • The nuts (134), the washers (132) and (133) and the screws (131)
  • The nuts (135), the washers (136) and the bolts (137).
Subtask 36-11-48-420-099-A ** ON A/C NOT FOR ALL
C. Installation of the Bleed Air Ducts between the Closing Rib and the Pylon
   (1) Install the seals in the flexible connector (96) that follow:
   (2) Install the flexible connector (96) on the duct assembly (123).
   (3) Install the duct assembly (94) in the flexible connector (96).
   (4) Install the clamp (104) on the bleed air duct (89).
   (5) TORQUE the clamp (104) to between 5.10 and 3.90 m.N (45.13 and 34.51 lbf.in ) T.
   (6) Make sure that the clamp (104) is installed in the correct position.
   (7) Connect the bonding lead (99) with the screw (93), the washer (100) and the nut (101) on the duct assembly (94).
   (8) Do a check of the electrical bonding (
Ref. AMM TASK 20-28-00-912-802).
   (9) Remove the PLUG - BLANKING from the pre cooler duct.
   (10) Put the insulation gasket (80) and the duct assembly (84) in position.
   (11) Install the bolts (83), facing washers (82), insulation washers (81) and the nuts (79).
   (12) Install the cable support bracket (78) with the facing washers (77), the bolts (76), insulation washers (85) and the nuts (86).
   (13) Put the duct assembly (89) in position on the duct assembly (84).
   (14) Install the clamp (87) on the duct assembly (84).
   (15) TORQUE the clamp (87) to between 7.90 and 5.60 m.N (69.91 and 49.56 lbf.in ) T.
   (16) Make sure that the clamp (87) is installed in the correct position.
   (17) Install the clamp (102).
   (18) Tighten the clamp (102).
   (19) Put the structural rods (90), (91) and (92) in position on the duct assembly (89).
   (20) Install the bolts (108), the washers (107) and the nuts (106).
   (21) Tighten the nuts (106).
WARNING: USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
   (22) Safety the nuts (106) with the new
AIPC 36-11-85-01-510 COTTER PINS (105).
   (23) For the RH wing only, do the steps that follow:
CAUTION: MAKE SURE THAT THE IDG CABLES DO NOT TOUCH THE PYLON FITTING. IF THE IDG CABLES TOUCH THE PYLON FITTING, DAMAGE WILL OCCUR TO THE CABLES AND/OR PYLON FITTING.
     (a) Install the bracket (113), bolts (109), washers (117) and the nuts (116).
     (b) Install the bolts (112) and the nuts (114).
     (c) Put the cable carrier (111) in position on the bracket (113).
     (d) Install the bolts (110) and the nuts (115).
     (e) If necessary, connect the IDG cables (Ref. AMM TASK 24-92-00-400-802).
     (f) Make sure the cable carrier (111) and the IDG cables are correctly positioned.
NOTE: This is necessary for the sufficient clearance between the IDG cables and the pylon fittings after the installation of the duct.
     (g) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to:
  • The nuts (116), the washers (117) and the bolts (109)
  • The bolts (112) and the nuts (114)
  • The bolts (110) and the nuts (115).
   (24) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to:
  • The nuts (79), bolts (83), facing washers (82) and the insulation washers (81)
  • The nuts (86), insulation washers (85), facing washers (77) and the bolts (76)
  • The clamps (87), (104) and (102)
  • The nuts (106), the bolts (108) and the washers (107).
   (25) Install the temperature sensor (103) on the bleed air duct (89) (Ref. AMM TASK 36-11-17-400-001).
   (26) If you removed the only bleed air ducts, then:
     (a) Connect the bonding leads (69) and (75) with the screw (72), the washer (74) and the nut (73).
   (27) Do a check of the electrical bonding (Ref. AMM TASK 20-28-00-912-802).
Subtask 36-11-48-420-100-A ** ON A/C NOT FOR ALL Subtask 36-11-48-420-101-A ** ON A/C NOT FOR ALL
E. Installation of the Bleed Air Ducts between Slat Track 1 and the Intermediate Rib
   (1) Put the tube assembly (15) into position on the aircraft.
   (2) Install the duct assembly (16).
   (3) Install the bolts (21), the facing washers (20) and the insulation washers (19).
   (4) Connect the bonding leads (25) and (18) with the screw (17), the washer (24) and the nut (23).
   (5) Do a check of the electrical bonding (Ref. AMM TASK 20-28-00-912-802).
   (6) Install a new two-piece AIPC 36-11-85-01-180 SEAL (35) in the duct assembly (28).
   (7) Carefully put the duct assembly (28) through the tube assembly (27) and into position with the duct assembly (16).
   (8) Install the rib assembly (56) with the bolts (55) and the nuts (57).
   (9) Install a new two-piece
AIPC 36-11-85-01-180 SEAL (37) in the connector assembly (40).
   (10) Install a new two-piece
AIPC 36-11-85-01-180 SEAL (41) in the connector assembly (40).
   (11) Install the connector assembly (40) into the intermediate rib and the duct assembly (28).
   (12) Install the bolts (48), the facing washers (49) and the insulation washers (50).
   (13) Connect the bonding lead (25) with the screw (26), the washer (34) and the nut (33) on the duct assembly (28).
   (14) Connect the bonding lead (32) with the screw (29), the washer (31) and the nut (30) on the duct assembly (28).
   (15) Connect the bonding lead (32) with the screw (38), the washer (54) and the nut (53) on the connector assembly (40).
   (16) Connect the bonding lead (47) with the screw (39), the washer (51) and the nut (52) on the connector assembly (40).
   (17) Connect the bonding leads (47) and (44) with the screw (43), the washer (46) and the nut (45) on the sleeve assembly (59).
   (18) Do a check of the electrical bonding (
Ref. AMM TASK 20-28-00-912-802).
   (19) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to these items:
  • The bolts (21) and the washers (20) and (19)
  • The bolts (55) and the nuts (57)
  • The bolts (48) and the washers (49) and (50).
Subtask 36-11-48-420-102-A ** ON A/C NOT FOR ALL
F. Installation of the Bleed Air Ducts between Slat Track 1 and the Fuselage
   (1) Remove the PLUG - BLANKING from the bleed air duct in the fuselage.
   (2) Put the bleed air duct (1) in position.
   (3) Install the clamp (3).
   (4) Tighten the clamp (3).
   (5) Put the link assembly (10) in position on the bleed air duct (1).
   (6) Install the facing washer (8) and the insulation washer (9) on the bolt (14).
   (7) Install the bolt (14), insulation washer (13), facing washer (11) and the nut (12).
   (8) Put the bleed air duct (5) in position.
   (9) Install the clamps (4) and (6).
   (10) Tighten the clamps (4) and (6).
   (11) Apply a layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to these items:
  • The clamps (3), (4) and (6)
  • The washers (8), (9), (11) and (13), the nut (12) and the bolt (14).
Subtask 36-11-48-930-052-A ** ON A/C NOT FOR ALL
G. Identification of the Clamps
   (1) Use Varnish Polyurethane-- Marking Structure (Material No.04SAB2) to make a mark 2.0 mm (0.08 in.) wide and 8.0 mm (0.31 in.) long on the applicable clamps as follows:
Subtask 36-11-48-420-103-A ** ON A/C NOT FOR ALL
H. Installation of the Insulation Muffs
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
   (1) Install the applicable insulation muffs, as follows:
   (2) Safety the applicable insulation muffs with Wire-- Stainless Steel Braided - (Material No.14QAD1) .
     (a) Cut unwanted ends of the Wire-- Stainless Steel Braided - (Material No.14QAD1) to approximately 20 mm (0.79 in.).
5. Close-up
Subtask 36-11-48-865-076-A ** ON A/C NOT FOR ALL
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR BLEED/ENG 1/CTL2HA1D11
121VUENGINE/IGN/ENG2/SYS B3JH2P42
121VUENGINE/IGN/ENG1/SYS B3JH1P41
122VUAIR BLEED/ENG 2/CTL2HA2Z22
Subtask 36-11-48-790-064-A ** ON A/C NOT FOR ALL
B. Leak Test
   (1) Do a leak test of the applicable bleed air ducts (Ref. AMM TASK 36-11-48-790-001).
Subtask 36-11-48-410-062-A ** ON A/C NOT FOR ALL
C. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the removed access panels:
     (a) For the left wing:
     (b) For the right wing:
Subtask 36-11-48-865-092-A ** ON A/C NOT FOR ALL
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUENGINE/2/FADEC A/AND EIU 22KS2A05
49VUENGINE/1/FADEC A/AND EIU 12KS1A04
49VUENGINE/1 AND 2/IGN/SYS A1JHA03
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C NOT FOR ALL
121VUENGINE/ENG2/FADEC B/AND EIU24KS2Q40
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R41
** ON A/C NOT FOR ALL
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
** ON A/C NOT FOR ALL
121VUENGINE/ENG2/FADEC B/AND EIU24KS2R41
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R40
Subtask 36-11-48-860-066-A ** ON A/C NOT FOR ALL
E. Aircraft Maintenance Configuration
   (1) Remove the WARNING NOTICE(S).
   (2) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION (Ref. AMM TASK 27-00-00-080-002).
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (3) Retract the slats (Ref. AMM TASK 27-80-00-866-005).
Subtask 36-11-48-942-058-A ** ON A/C NOT FOR ALL
F. Removal of Equipment
   (1) If used, remove the safety barriers.
   (2) Remove the access platform(s).
   (3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 01:09:44 UTC