DOC AIRBUS | AMM A320FInstallation of the Door Support Arm, the Door Buffer, the Door Unlocking Handle and the Door Stay Mechanism
TASK 52-11-12-400-001-A
Installation of the Door Support Arm, the Door Buffer, the Door Unlocking Handle and the Door Stay Mechanism
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 52-11-12-860-051-A
Subtask 52-11-12-420-057-A
Subtask 52-11-12-420-056-A
[Rev.10 from 2021]
2026.04.01 04:11:24 UTC
Installation of the Door Support Arm, the Door Buffer, the Door Unlocking Handle and the Door Stay Mechanism
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03HBD9) | Synthetic Ester base Grease-General Purpose Low Temp - |
| (Material No.03QDB1) | Dry lubricant-Anti Seizing PTFE Loaded - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 831, 841 |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 2 | COTTER PIN | AIPC 52-11-01-04-320 |
| 7 | LOCKWASHER | AIPC 52-11-01-04-370 |
| 57 | COTTER PIN | AIPC 52-11-01-05-040 |
| 40 | COTTER PIN | AIPC 52-11-01-06-010 |
| 2 | COTTER PIN | AIPC 52-11-81-02-320 |
| 7 | LOCKWASHER | AIPC 52-11-81-02-370 |
| 40 | COTTER PINS | AIPC 52-11-81-03-010 |
| 51 | BOLT | AIPC 52-13-04-05-040 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 52-10-00-410-001-A | Closing of the Passenger/Crew Door |
| TASK 52-10-00-720-001-A | Functional Check of Door Suspension |
| TASK 52-10-00-860-001-A | Special Precautions before Work on the Passenger/Crew Door |
| TASK 52-11-11-400-001-A | Installation of the Forward Passenger/Crew Door |
| TASK 52-11-12-220-001-A | Detailed Visual Inspection of the Door Suspension Mechanism |
| TASK 52-11-14-400-001-B | Installation of the Door-Damper and Emergency-Operation Cylinder |
Door Buffer and Door Unlocking HandleSubtask 52-11-12-860-051-A
A. Aircraft Maintenance Configuration
(1) Make sure that the access platform is in position.
(2) Make sure that the special precautions are obeyed (Ref. AMM TASK 52-10-00-860-001)
Subtask 52-11-12-220-055-A (1) Make sure that the access platform is in position.
(2) Make sure that the special precautions are obeyed (Ref. AMM TASK 52-10-00-860-001)
B. Preparation for Installation
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(Ref. AMM TASK 52-11-12-220-001)
4. Procedure(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(Ref. AMM TASK 52-11-12-220-001)
Subtask 52-11-12-420-057-A
A. Installation of the Buffer and the Door Pushbutton Switch
(1) Put the buffer (26) in position.
(2) Install the screws (25) and the nuts (27) and tighten them.
(3) Install the pushbutton switch assembly (23) in the support arm (1).
(4) Put the fitting (20) in position.
(5) Install the washers (22), the screws (21) and tighten them.
Subtask 52-11-12-820-051-A (1) Put the buffer (26) in position.
(2) Install the screws (25) and the nuts (27) and tighten them.
(3) Install the pushbutton switch assembly (23) in the support arm (1).
(4) Put the fitting (20) in position.
(5) Install the washers (22), the screws (21) and tighten them.
B. Adjustment of the Buffer
(1) Fully open the door against the fuselage.
(2) Make sure that the door stay mechanism locks the door in the open position.
(3) Make sure that clearance R1 between the stop (65) and the fuselage is 1 +0.5 mm or -0.5 mm (0.0394 +0.0197 in. or -0.0197 in.).
(4) If the clearance R1 is not correct do the adjustment below:
(a) Push the button of the door stay mechanism and move the door away from the fuselage.
(b) Remove and discard the cotter pin (57).
(c) Remove the nut (58), the washer (59) and the spherical cup (60).
(d) Remove the bolt (51), the washer (52), the buffer (65) and the spherical cup (64).
(e) Remove the guide bush (63) and the washers (53) and (62).
(f) Remove the guide bush (56) and the washers (55) and (61).
(g) Adjust the adjustable washers (61) and (62) to get the correct clearance R1.
(h) Install the washers (55) and (61) and the guide bush (56).
(i) Install the washers (53) and (62) and the guide bush (63).
(j) Install the spherical cup (64), the buffer (65), the washer (52) and the bolt (51).
(k) Make sure that the bolt (51) is in good condition:
1 If yes, install the removed bolt (51).
2 If no, install a new AIPC 52-13-04-05-040 BOLT (51).
(l) Install the spherical cup (60), the washer (59) and the nut (58).
(m) Fully open the door against the fuselage (door locked) and make sure that the clearance R1 is correct.
(n) If necessary, do another adjustment procedure.
(o) Tighten the nut (58).
(p) If you have installed a new bolt (51), drill it with DRILL DIA. 2 mm (0.0787 in.).
(q) Safety the nut (58) with AIPC 52-11-01-05-040 COTTER PIN (57).
Subtask 52-11-12-220-051-A (1) Fully open the door against the fuselage.
(2) Make sure that the door stay mechanism locks the door in the open position.
(3) Make sure that clearance R1 between the stop (65) and the fuselage is 1 +0.5 mm or -0.5 mm (0.0394 +0.0197 in. or -0.0197 in.).
(4) If the clearance R1 is not correct do the adjustment below:
(a) Push the button of the door stay mechanism and move the door away from the fuselage.
(b) Remove and discard the cotter pin (57).
(c) Remove the nut (58), the washer (59) and the spherical cup (60).
(d) Remove the bolt (51), the washer (52), the buffer (65) and the spherical cup (64).
(e) Remove the guide bush (63) and the washers (53) and (62).
(f) Remove the guide bush (56) and the washers (55) and (61).
(g) Adjust the adjustable washers (61) and (62) to get the correct clearance R1.
(h) Install the washers (55) and (61) and the guide bush (56).
(i) Install the washers (53) and (62) and the guide bush (63).
(j) Install the spherical cup (64), the buffer (65), the washer (52) and the bolt (51).
(k) Make sure that the bolt (51) is in good condition:
1 If yes, install the removed bolt (51).
2 If no, install a new AIPC 52-13-04-05-040 BOLT (51).
(l) Install the spherical cup (60), the washer (59) and the nut (58).
(m) Fully open the door against the fuselage (door locked) and make sure that the clearance R1 is correct.
(n) If necessary, do another adjustment procedure.
(o) Tighten the nut (58).
(p) If you have installed a new bolt (51), drill it with DRILL DIA. 2 mm (0.0787 in.).
(q) Safety the nut (58) with AIPC 52-11-01-05-040 COTTER PIN (57).
C. Check of the Load of the Door Locking Mechanism
(1) Make sure that the load needed to unlock the door when open does not exceed 6 daN (13.4885 lbf) (Ref. AMM TASK 52-10-00-720-001).
Subtask 52-11-12-420-052-B (1) Make sure that the load needed to unlock the door when open does not exceed 6 daN (13.4885 lbf) (Ref. AMM TASK 52-10-00-720-001).
D. Not Applicable
Subtask 52-11-12-420-058-A E. Installation of the Door Stay Mechanism
(1) Put the mechanism (43) on the pins (44).
(2) Install the nuts (41) with the washers (42). TORQUE the nuts to between 0.35 and 0.3 m.daN (30.97 and 26.55 lbf.in )
.
(3) Install the AIPC 52-11-01-06-010 COTTER PIN (40) or AIPC 52-11-81-03-010 COTTER PINS (40).
Subtask 52-11-12-420-055-A (1) Put the mechanism (43) on the pins (44).
(2) Install the nuts (41) with the washers (42). TORQUE the nuts to between 0.35 and 0.3 m.daN (30.97 and 26.55 lbf.in )
. (3) Install the AIPC 52-11-01-06-010 COTTER PIN (40) or AIPC 52-11-81-03-010 COTTER PINS (40).
F. Installation of the Support Arm
(1) Apply Dry lubricant-Anti Seizing PTFE Loaded - (Material No.03QDB1) on the sliding surface of the ball joints (14).
(2) Put the door support arm (1) in position at the level of the attach fittings.
Hold it in position.
(3) Install the bushes (5), (16), (6) and (9) and the adjustment washer (10) 2.5 -1.5 mm or +1.5 mm (0.10 -0.06 in. or +0.06 in.).
(4) Apply Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) on the bolts (8) and (15) before you install them.
(5) Install the bolts (8) and (15), the washers (4) and the lockwasher (7) and the nuts (3).
. If it was not possible to install the safety pin, lightly over torque the nuts (3) to align the nut slot with the safety pin hole.
(7) Safety the bolt (8) with the AIPC 52-11-01-04-370 LOCKWASHER (7) or AIPC 52-11-81-02-370 LOCKWASHER (7).
(8) Install a new AIPC 52-11-01-04-320 COTTER PIN (2) or AIPC 52-11-81-02-320 COTTER PIN (2).
(9) Install the bonding leads (11) on the supports, the washers (13) and the screws (12).
5. Close-up(1) Apply Dry lubricant-Anti Seizing PTFE Loaded - (Material No.03QDB1) on the sliding surface of the ball joints (14).
(2) Put the door support arm (1) in position at the level of the attach fittings.
Hold it in position.
(3) Install the bushes (5), (16), (6) and (9) and the adjustment washer (10) 2.5 -1.5 mm or +1.5 mm (0.10 -0.06 in. or +0.06 in.).
(4) Apply Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) on the bolts (8) and (15) before you install them.
(5) Install the bolts (8) and (15), the washers (4) and the lockwasher (7) and the nuts (3).
NOTE: If you install new bolts (8) and (15) drill a hole of 2 mm (0.0787 in.).
(6) TORQUE the nuts (3) to between 1.35 and 1.2 m.daN (119.47 and 106.19 lbf.in ) . If it was not possible to install the safety pin, lightly over torque the nuts (3) to align the nut slot with the safety pin hole. (7) Safety the bolt (8) with the AIPC 52-11-01-04-370 LOCKWASHER (7) or AIPC 52-11-81-02-370 LOCKWASHER (7).
(8) Install a new AIPC 52-11-01-04-320 COTTER PIN (2) or AIPC 52-11-81-02-320 COTTER PIN (2).
(9) Install the bonding leads (11) on the supports, the washers (13) and the screws (12).
NOTE: When you install the bonding leads (11), do an electrical bonding (Ref. AMM TASK 20-28-00-912-802).
Subtask 52-11-12-420-056-A
A. Installation of the Component
(1) Install the door-damper and emergency-operation cylinder (Ref. AMM TASK 52-11-14-400-001).
(2) Install the FWD passenger/crew door (Ref. AMM TASK 52-11-11-400-001).
Subtask 52-11-12-410-054-A (1) Install the door-damper and emergency-operation cylinder (Ref. AMM TASK 52-11-14-400-001).
(2) Install the FWD passenger/crew door (Ref. AMM TASK 52-11-11-400-001).
B. Close Access
(1) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2) Close the FWD passenger/crew door 831 or 841. (Ref. AMM TASK 52-10-00-410-001)
(3) Remove the access platform(s).
(1) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2) Close the FWD passenger/crew door 831 or 841. (Ref. AMM TASK 52-10-00-410-001)
(3) Remove the access platform(s).