DOC AIRBUS | AMM A320FRemoval of the Vapor Seal
TASK 28-13-42-000-001-A
Removal of the Vapor Seal
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 28-13-42-860-050-A Subtask 28-13-42-010-051-B ** ON A/C NOT FOR ALL
Subtask 28-13-42-020-051-B
[Rev.10 from 2021]
2026.04.02 07:02:12 UTC
Removal of the Vapor Seal
NOTE: You must take care when you work with the vapor seal. Prevent distortion of the metal attach frames and fittings. Make sure that there are no tears, scratches or folded areas on the vapor seal-membrane.
ZONE: 190
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | CAP - BLANKING |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 190 | BELLY FAIR, AIR CONDITIONING & HYD COMPT |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 21-51-41-000-001-A | Removal of the Ozone Filter |
| TASK 21-51-51-000-001-A | Removal of the Pack Flow-Control Valve/ Pack Flow-Control Unit |
| TASK 21-52-23-000-002-A | Removal of the Pipe Assembly between the Anti-Ice Valve (if installed), the Bypass Valve and the Air Cycle Machine |
| TASK 21-52-23-000-003-A | Removal of the Pipe Assembly between the Anti-Ice Valve (if installed) and the Bypass Air Duct of the Primary Heat Exchanger |
| TASK 21-52-41-000-001-A | Removal of the Air Conditioning Pack |
| TASK 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 28-13-42-300-001-A | Center-Tank Vapor-Seal-Membrane Repair |
| TASK 28-43-23-000-004-A | Removal of the Magnetic Level-Indicator Upper-Housing |
| TASK 36-12-41-000-001-A | Removal of a Bleed-Air Duct |
Trim-Air DuctSubtask 28-13-42-860-050-A Subtask 28-13-42-010-051-B ** ON A/C NOT FOR ALL
B. Get Access
(1) Remove ozone filter(s) (converter) 100HM (101HM) (Ref. AMM TASK 21-51-41-000-001).
(2) Remove the air conditioning pack(s) (Ref. AMM TASK 21-52-41-000-001).
(3) Remove the pack flow-control valve(s)/pack flow-control unit(s) (Ref. AMM TASK 21-51-51-000-001).
(4) Remove the applicable pipe assemblies (Ref. AMM TASK 21-52-23-000-002) and (Ref. AMM TASK 21-52-23-000-003).
(5) Remove the bleed air duct(s) (Ref. AMM TASK 36-12-41-000-001):
(a) Remove the bleed air duct (100)
(b) Remove the bleed air ducts (101), (102)
(a) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
Subtask 28-13-42-010-051-D ** ON A/C NOT FOR ALL (1) Remove ozone filter(s) (converter) 100HM (101HM) (Ref. AMM TASK 21-51-41-000-001).
(2) Remove the air conditioning pack(s) (Ref. AMM TASK 21-52-41-000-001).
(3) Remove the pack flow-control valve(s)/pack flow-control unit(s) (Ref. AMM TASK 21-51-51-000-001).
(4) Remove the applicable pipe assemblies (Ref. AMM TASK 21-52-23-000-002) and (Ref. AMM TASK 21-52-23-000-003).
(5) Remove the bleed air duct(s) (Ref. AMM TASK 36-12-41-000-001):
(a) Remove the bleed air duct (100)
(b) Remove the bleed air ducts (101), (102)
CAUTION:
MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
(6) Disconnect the applicable electrical harnesses from the receptacles. (a) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
NOTE: If necessary, remove the harness from the air conditioning compartment to get access to the vapor seal.
B. Get Access
(1) Remove ozone filter(s) (converter) 100HM (101HM) (Ref. AMM TASK 21-51-41-000-001).
(2) Remove the air conditioning pack(s) (Ref. AMM TASK 21-52-41-000-001).
(3) Remove the pack flow-control valve(s)/pack flow-control unit(s) (Ref. AMM TASK 21-51-51-000-001).
(4) Remove the pipe assembly (Ref. AMM TASK 21-52-23-000-002).
(5) Remove the bleed air duct(s) (Ref. AMM TASK 36-12-41-000-001):
(a) Remove the bleed air duct (100)
(b) Remove the bleed air ducts (101), (102)
(a) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
4. Procedure(1) Remove ozone filter(s) (converter) 100HM (101HM) (Ref. AMM TASK 21-51-41-000-001).
(2) Remove the air conditioning pack(s) (Ref. AMM TASK 21-52-41-000-001).
(3) Remove the pack flow-control valve(s)/pack flow-control unit(s) (Ref. AMM TASK 21-51-51-000-001).
(4) Remove the pipe assembly (Ref. AMM TASK 21-52-23-000-002).
(5) Remove the bleed air duct(s) (Ref. AMM TASK 36-12-41-000-001):
(a) Remove the bleed air duct (100)
(b) Remove the bleed air ducts (101), (102)
CAUTION:
MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
(6) Disconnect the applicable electrical harnesses from the receptacles. (a) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
NOTE: If necessary, remove the harness from the air conditioning compartment to get access to the vapor seal.
(7) Remove the magnetic level-indicator upper-housing (Ref. AMM TASK 28-43-23-000-004).Subtask 28-13-42-020-051-B
A. Removal of the Vapor Seal
(a) Remove the nuts (2) and the washers (3) from the studs (4) around the heat shield (5) and from some positions at the attach frames (12), (13), (14) and (15).
(b) Remove the heat shield (5) from the studs (4).
(c) Remove the studs (4), the washers (3) and the spring washers (8) from the attach frames (9), (10), (11), (12), (13), (14) and (15).
(d) Remove the attach frames, the seals (76) and the sealing strips (75) from the LH vapor seal-membrane (1).
(e) Remove the studs (4), the washers (3) and the spring washers (8) from the longitudinal fittings (16), (17), (18), (19), (20), (21), (22), (23) and (24).
(f) Remove the screws (6) and the washers (7) from the lateral fittings (25), (26), (27), (28), (29) and (30).
(g) Remove the lateral fittings , seals (76) and the sealing strips (75) from the LH vapor seal-membrane (1).
(h) Remove the studs (4), the washers (3) and the spring washers (8) from the longitudinal fittings (31), (32), (33) and (34) where the vapor seal is divided.
(i) Remove the longitudinal fittings, seals (76) and the sealing strips (75) from the LH vapor seal-membrane (1).
(j) Remove the LH vapor seal-membrane (1) from the lower surface of the center-tank.
(2) Remove the CTR Vapor Seal-Membrane:
(a) Remove the studs (4), the washers (3) and the spring washers (8) from the attach frame (36) and from the longitudinal fittings (37), (38), (39) and (40).
(b) Remove the attach frame, the longitudinal fittings and the sealing strips (75) from the CTR vapor seal-membrane (35).
(c) Remove the screws (6) and the washers (7) from the lateral fittings (41), (42), (43), (44) and (45).
(d) Remove the lateral fittings and the sealing strips (75) from the CTR vapor seal-membrane (35).
(e) Remove the CTR vapor seal-membrane (35) from the center-tank lower surface.
(3) Remove the RH Vapor Seal-Membrane:
(a) Remove the nuts (2) and the washers (3) from the studs (4) around the heat shield (47) and from some positions at the attach frames (48), (49), (53) and (55).
(b) Remove the heat shield (47) from the studs (4).
(c) Remove the studs (4), the washers (3) and the spring washers (8) from the attach frames (48), (49), (50), (51), (52), (53), (54) and (55).
(d) Remove the attach frames, seals (77) and the sealing strips (75) from the RH vapor seal-membrane (46).
(e) Remove the studs (4), the washers (3) and the spring washers (8) from the longitudinal fittings (56), (57), (58), (59), (60), (61), (62), (63), (64), (65) and (66).
(f) Remove the longitudinal fittings, seals (77) and the sealing strips (75) from the RH vapor seal-membrane (46).
(g) Remove the screws (6) and the washers (7) from the lateral fittings (67), (68), (69), (70), (71) and (72).
(h) Remove the lateral fittings, seals (77) and the sealing strips (75) from the RH vapor seal-membrane (46).
(i) Remove the RH vapor seal-membrane (46) from the lower surface of the center-tank.
Subtask 28-13-42-210-053-A NOTE: Identify the positions of different lengths of screws and studs before you start the removal. Also identify the positions of the attach frames, of the lateral and longitudinal attach fittings and of the sealing strips.
(1) Remove the LH Vapor Seal-Membrane: (a) Remove the nuts (2) and the washers (3) from the studs (4) around the heat shield (5) and from some positions at the attach frames (12), (13), (14) and (15).
(b) Remove the heat shield (5) from the studs (4).
(c) Remove the studs (4), the washers (3) and the spring washers (8) from the attach frames (9), (10), (11), (12), (13), (14) and (15).
(d) Remove the attach frames, the seals (76) and the sealing strips (75) from the LH vapor seal-membrane (1).
(e) Remove the studs (4), the washers (3) and the spring washers (8) from the longitudinal fittings (16), (17), (18), (19), (20), (21), (22), (23) and (24).
(f) Remove the screws (6) and the washers (7) from the lateral fittings (25), (26), (27), (28), (29) and (30).
(g) Remove the lateral fittings , seals (76) and the sealing strips (75) from the LH vapor seal-membrane (1).
(h) Remove the studs (4), the washers (3) and the spring washers (8) from the longitudinal fittings (31), (32), (33) and (34) where the vapor seal is divided.
(i) Remove the longitudinal fittings, seals (76) and the sealing strips (75) from the LH vapor seal-membrane (1).
(j) Remove the LH vapor seal-membrane (1) from the lower surface of the center-tank.
(2) Remove the CTR Vapor Seal-Membrane:
(a) Remove the studs (4), the washers (3) and the spring washers (8) from the attach frame (36) and from the longitudinal fittings (37), (38), (39) and (40).
(b) Remove the attach frame, the longitudinal fittings and the sealing strips (75) from the CTR vapor seal-membrane (35).
(c) Remove the screws (6) and the washers (7) from the lateral fittings (41), (42), (43), (44) and (45).
(d) Remove the lateral fittings and the sealing strips (75) from the CTR vapor seal-membrane (35).
(e) Remove the CTR vapor seal-membrane (35) from the center-tank lower surface.
(3) Remove the RH Vapor Seal-Membrane:
(a) Remove the nuts (2) and the washers (3) from the studs (4) around the heat shield (47) and from some positions at the attach frames (48), (49), (53) and (55).
(b) Remove the heat shield (47) from the studs (4).
(c) Remove the studs (4), the washers (3) and the spring washers (8) from the attach frames (48), (49), (50), (51), (52), (53), (54) and (55).
(d) Remove the attach frames, seals (77) and the sealing strips (75) from the RH vapor seal-membrane (46).
(e) Remove the studs (4), the washers (3) and the spring washers (8) from the longitudinal fittings (56), (57), (58), (59), (60), (61), (62), (63), (64), (65) and (66).
(f) Remove the longitudinal fittings, seals (77) and the sealing strips (75) from the RH vapor seal-membrane (46).
(g) Remove the screws (6) and the washers (7) from the lateral fittings (67), (68), (69), (70), (71) and (72).
(h) Remove the lateral fittings, seals (77) and the sealing strips (75) from the RH vapor seal-membrane (46).
(i) Remove the RH vapor seal-membrane (46) from the lower surface of the center-tank.
B. Examine the Vapor Seal/Attachment Fitting Seals
(1) Examine the seals (3) of the vapor seals (1)/attachment fittings (2) for damage/wear, if they have damage/wear, replace them (Ref. AMM TASK 28-13-42-300-001).
(1) Examine the seals (3) of the vapor seals (1)/attachment fittings (2) for damage/wear, if they have damage/wear, replace them (Ref. AMM TASK 28-13-42-300-001).