DOC AIRBUS | AMM A320FInstallation of the Vent Door
TASK 52-31-22-400-001-A
Installation of the Vent Door
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Expendable Parts
D. Referenced Information
3. Job Set-up
Subtask 52-31-22-860-050-A
Subtask 52-31-22-420-050-C ** ON A/C NOT FOR ALL
Subtask 52-31-22-865-052-A
[Rev.10 from 2021]
2026.04.02 06:27:55 UTC
Installation of the Vent Door
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION:
IMMEDIATELY AFTER YOU OPEN THE CARGO COMPARTMENT DOOR, RECORD ON THE WORK CARD ON THE DOOR, THE DATE AND TIME WHEN YOU OPENED IT. IF THE CARGO COMPARTMENT DOOR STAYS OPEN FOR 12 HOURS OR MORE, YOU MUST BLEED THE HYDRAULIC SYSTEM RELATED TO IT. IF YOU DO NOT OBEY THESE PRECAUTIONS, THE DOOR CAN CLOSE SUDDENLY WHEN YOU SET THE DOOR TO "CLOSE". THIS CAN CAUSE DAMAGE TO THE DOOR AND TO THE AIRCRAFT STRUCTURE.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.12ABC1) | Corrosion Preventive Compound_Water Displacing Soft Film - |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 17 | COTTER PIN | AIPC 52-31-21-42-020 |
| 17 | COTTER PIN | AIPC 52-31-22-12-030 |
| 1 | COTTER PINS | AIPC 52-31-22-12-140 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-22-52-640-002-A | Lubrication of Cargo Door |
| TASK 52-30-00-860-001-A | Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-30-00-860-002-A | Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-31-11-820-003-A | Adjustment of the Vent Door |
| TASK 52-31-13-000-001-A | Removal of the Lining and the Insulation |
| TASK 52-31-13-400-001-A | Installation of the Lining and the Insulation |
Vent DoorSubtask 52-31-22-860-050-A
A. Aircraft Maintenance Configuration
(1) Make sure that the FWD cargo-compartment door (referred to as cargo door) is opened and safetied with the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(2) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the opened cargo door.
(3) Make sure that the lining and insulation are removed from the inner side of the cargo door (Ref. AMM TASK 52-31-13-000-001).
Subtask 52-31-22-865-051-A (1) Make sure that the FWD cargo-compartment door (referred to as cargo door) is opened and safetied with the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(2) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the opened cargo door.
(3) Make sure that the lining and insulation are removed from the inner side of the cargo door (Ref. AMM TASK 52-31-13-000-001).
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| ** ON A/C ALL | |||
| 122VU | DOORS/CARGO | 1MJ | T12 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
Subtask 52-31-22-420-050-C ** ON A/C NOT FOR ALL
A. Installation of the Vent Door
(1) Put the vent door (10) in position on the vent door frame.
(2) Install the bolt (8), the washer (3) and the sleeve (9) to attach the vent door (10) to the upper hinge bracket.
(3) Install the bolt (8) and the nut (2) to attach the vent door (10) temporarily to the lower hinge bracket.
(4) Adjust the upper and lower clearances between the vent door (10) and the vent door frame as follows:
(a) Put the vent door (10) in the middle of the opening so that the clearance is between 1.0 mm (0.0394 in.) and 3.0 mm (0.1181 in.).
(b) Measure the clearance between the lower hinge bracket and the lower hinge arm to get the thickness of the shim set.
(c) Remove the nut (2) and the bolt (8) from the lower hinge arm.
(d) Install the shim set of washers (3) and (4) with the correct thickness between the hinge bracket and the lower hinge arm.
(5) Install the sleeves (5) and the springs (6) and (7) to the bolts (8).
(6) Install the bolt (8) and the washer (3) to the lower hinge bracket and the spring (6).
(7) Install the remaining washers (3) and (4) and the nuts (2) to the bolts (8). Tighten the nut (2).
(8) Safety the nuts (2) with the new AIPC 52-31-22-12-140 COTTER PINS (1).
(9) Install the springs (6) and (7) to the spring bolts (21) and to the fittings of the vent door frame.
(10) Install the connection rod (13) on the vent door (10) as follows:
(a) Put the connection rod (13) to the actuator arm and install the bolt (11) together with the washers (12) and (15), the bush (14), and the nut (16).
(b) Tighten the nut (16) and safety it with the new AIPC 52-31-22-12-030 COTTER PIN (17).
(11) Put the cover assembly (20) on the cargo door structure and attach it with the bolts (18), the washers (19) and the nuts (21).
Subtask 52-31-22-420-050-D ** ON A/C NOT FOR ALL (1) Put the vent door (10) in position on the vent door frame.
(2) Install the bolt (8), the washer (3) and the sleeve (9) to attach the vent door (10) to the upper hinge bracket.
(3) Install the bolt (8) and the nut (2) to attach the vent door (10) temporarily to the lower hinge bracket.
(4) Adjust the upper and lower clearances between the vent door (10) and the vent door frame as follows:
(a) Put the vent door (10) in the middle of the opening so that the clearance is between 1.0 mm (0.0394 in.) and 3.0 mm (0.1181 in.).
(b) Measure the clearance between the lower hinge bracket and the lower hinge arm to get the thickness of the shim set.
(c) Remove the nut (2) and the bolt (8) from the lower hinge arm.
(d) Install the shim set of washers (3) and (4) with the correct thickness between the hinge bracket and the lower hinge arm.
(5) Install the sleeves (5) and the springs (6) and (7) to the bolts (8).
(6) Install the bolt (8) and the washer (3) to the lower hinge bracket and the spring (6).
(7) Install the remaining washers (3) and (4) and the nuts (2) to the bolts (8). Tighten the nut (2).
(8) Safety the nuts (2) with the new AIPC 52-31-22-12-140 COTTER PINS (1).
(9) Install the springs (6) and (7) to the spring bolts (21) and to the fittings of the vent door frame.
(10) Install the connection rod (13) on the vent door (10) as follows:
(a) Put the connection rod (13) to the actuator arm and install the bolt (11) together with the washers (12) and (15), the bush (14), and the nut (16).
(b) Tighten the nut (16) and safety it with the new AIPC 52-31-22-12-030 COTTER PIN (17).
(11) Put the cover assembly (20) on the cargo door structure and attach it with the bolts (18), the washers (19) and the nuts (21).
A. Installation of the Vent Door
(1) Put the vent door (10) in position at the vent door frame.
(2) Install the bolt (8), the washer (3) and the bush (9) to attach the vent door (10) to the upper hinge bracket.
(3) Install the bolt (8) and the nut (2) to attach the vent door temporarily to the lower hinge bracket.
(4) Adjust the upper and lower clearances between the vent door (10) and the vent door frame as follows:
(a) Put the vent door (10) in the middle of the opening so that the clearance is between 1.0 mm (0.0394 in.) and 3.0 mm (0.1181 in.).
(b) Measure the clearance between the lower hinge bracket and the lower hinge arm to get the thickness of the shim set.
(c) Remove the nut (2) and the bolt (8) from the lower hinge bracket.
(d) Install the shim set of washers (4) with the correct thickness between the lower hinge brackets and the lower hinge arm.
(5) Install the sleeves (5) and the springs (6) and (7) on the bolts (8).
(6) Install the bolt (8) and the washer (3) at the lower hinge bracket.
(7) Install the remaining washers (3) and (4) and the nuts (2) on the bolts (8).
(8) Tighten the nuts (2) and safety them with the new AIPC 52-31-22-12-140 COTTER PINS (1).
(9) Install the springs (6) and (7) at the spring bolts (21) and the fittings of the vent door frame.
(10) Install the connection rod (13) at the vent door (10) as follows:
(a) Put the connection rod (13) in the actuator arm and install the bolt (11), the washers (12) and (15), the bush (14) and the nut (16).
(b) Tighten the nut (16) and safety it with the new AIPC 52-31-21-42-020 COTTER PIN (17).
(11) Put the cover assembly (20) in position at to the brackets of the cargo door and install the bolts (18) and the washers (19).
Subtask 52-31-22-710-050-B (1) Put the vent door (10) in position at the vent door frame.
(2) Install the bolt (8), the washer (3) and the bush (9) to attach the vent door (10) to the upper hinge bracket.
(3) Install the bolt (8) and the nut (2) to attach the vent door temporarily to the lower hinge bracket.
(4) Adjust the upper and lower clearances between the vent door (10) and the vent door frame as follows:
(a) Put the vent door (10) in the middle of the opening so that the clearance is between 1.0 mm (0.0394 in.) and 3.0 mm (0.1181 in.).
(b) Measure the clearance between the lower hinge bracket and the lower hinge arm to get the thickness of the shim set.
(c) Remove the nut (2) and the bolt (8) from the lower hinge bracket.
(d) Install the shim set of washers (4) with the correct thickness between the lower hinge brackets and the lower hinge arm.
(5) Install the sleeves (5) and the springs (6) and (7) on the bolts (8).
(6) Install the bolt (8) and the washer (3) at the lower hinge bracket.
(7) Install the remaining washers (3) and (4) and the nuts (2) on the bolts (8).
(8) Tighten the nuts (2) and safety them with the new AIPC 52-31-22-12-140 COTTER PINS (1).
(9) Install the springs (6) and (7) at the spring bolts (21) and the fittings of the vent door frame.
(10) Install the connection rod (13) at the vent door (10) as follows:
(a) Put the connection rod (13) in the actuator arm and install the bolt (11), the washers (12) and (15), the bush (14) and the nut (16).
(b) Tighten the nut (16) and safety it with the new AIPC 52-31-21-42-020 COTTER PIN (17).
(11) Put the cover assembly (20) in position at to the brackets of the cargo door and install the bolts (18) and the washers (19).
B. Adjustment/Test
(1) Close the vent door of the opened FWD cargo door as follows:
(a) Press the roller lever of the interlock mechanism outboards to release the blockage of the latching shaft.
(b) Pull the door handle down to the locked position and push it into the recess of the door structure.
(2) Make sure that the skin offset between the vent door and the cargo door contour is correct (Ref. AMM TASK 52-31-11-820-003).
(3) Make sure that the clearance between the stop bolts of the vent door and the related stops is correct (Ref. AMM TASK 52-31-11-820-003).
(4) Push the handle flap in and pull the door handle up to the unlocked position.
5. Close-up(1) Close the vent door of the opened FWD cargo door as follows:
(a) Press the roller lever of the interlock mechanism outboards to release the blockage of the latching shaft.
(b) Pull the door handle down to the locked position and push it into the recess of the door structure.
(2) Make sure that the skin offset between the vent door and the cargo door contour is correct (Ref. AMM TASK 52-31-11-820-003).
(3) Make sure that the clearance between the stop bolts of the vent door and the related stops is correct (Ref. AMM TASK 52-31-11-820-003).
(4) Push the handle flap in and pull the door handle up to the unlocked position.
Subtask 52-31-22-865-052-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 52-31-22-410-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| ** ON A/C ALL | |||
| 122VU | DOORS/CARGO | 1MJ | T12 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Make sure that the springs of the hinge arms are correctly lubricated (Ref. AMM TASK 12-22-52-640-002).
(3) Apply Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) to all the components of the vent door and to the adjacent cargo door structure.
(4) Install the removed parts of the lining and insulation (Ref. AMM TASK 52-31-13-400-001).
(5) Remove the actuator safety locks and close the FWD cargo door (Ref. AMM TASK 52-30-00-860-002).
(6) Remove the access platform(s).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Make sure that the springs of the hinge arms are correctly lubricated (Ref. AMM TASK 12-22-52-640-002).
(3) Apply Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) to all the components of the vent door and to the adjacent cargo door structure.
(4) Install the removed parts of the lining and insulation (Ref. AMM TASK 52-31-13-400-001).
(5) Remove the actuator safety locks and close the FWD cargo door (Ref. AMM TASK 52-30-00-860-002).
(6) Remove the access platform(s).