DOC AIRBUS | AMM A320FRemoval of the Drift Pin Mechanism
TASK 52-31-21-000-008-A
Removal of the Drift Pin Mechanism
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 52-31-21-010-065-A
Subtask 52-31-21-020-064-E ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:27:52 UTC
Removal of the Drift Pin Mechanism
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 |
| No specific | AR | PIN - RIGGING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 825AR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 52-30-00-860-001-A | Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-31-13-000-001-A | Removal of the Lining and the Insulation |
Drift Pin MechanismSubtask 52-31-21-010-065-A
A. Get Access
(1) Open the FWD cargo-compartment door (referred to as cargo door) and install the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(2) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the opened cargo door.
Subtask 52-31-21-865-071-A (1) Open the FWD cargo-compartment door (referred to as cargo door) and install the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(2) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the opened cargo door.
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 52-31-21-010-066-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 |
C. Get Access
(1) Remove the access panel 825AR from the cargo door to get access to the safety shaft of the locking mechanism.
(2) Remove the lining and insulation of the cargo door to get access to the affected drift pin mechanism (Ref. AMM TASK 52-31-13-000-001).
4. Procedure(1) Remove the access panel 825AR from the cargo door to get access to the safety shaft of the locking mechanism.
(2) Remove the lining and insulation of the cargo door to get access to the affected drift pin mechanism (Ref. AMM TASK 52-31-13-000-001).
Subtask 52-31-21-020-064-E ** ON A/C NOT FOR ALL
A. Removal of the Drift Pin Assembly
(1) Remove and discard the cotter pin (285) from the nut (286).
(2) Remove the nut (286), the washers (287) and (289) and the bolt (282) to disconnect the drift pin (283) from the linkage (281).
(3) Move the drift pin (283) out of the edge member bearing (284).
(4) If necessary, remove the bush (288) from the fork end of the drift pin (283).
Subtask 52-31-21-020-065-E ** ON A/C NOT FOR ALL (1) Remove and discard the cotter pin (285) from the nut (286).
(2) Remove the nut (286), the washers (287) and (289) and the bolt (282) to disconnect the drift pin (283) from the linkage (281).
(3) Move the drift pin (283) out of the edge member bearing (284).
(4) If necessary, remove the bush (288) from the fork end of the drift pin (283).
B. Removal of the Linkage Assembly
(a) Disconnect the rod-end (292) from the bellcrank lever (299) as follows:
1 Remove and discard the cotter pin (301) from the nut (300).
2 Remove the nut (300), the washers (297) and the bolt (298).
3 Remove the rod-end (292) from the bellcrank lever (299).
(b) Disconnect the rod-end (281) from the drift pin (283) as follows:
1 Remove and discard the cotter pin (285) from the nut (286).
2 Remove the nut (286), the washers (287) and (289) and the bolt (282).
3 Disconnect the rod-end (281) from the drift pin (283).
4 If necessary, remove the bush (288) from the drift pin (283).
(c) Disassemble the horizontal connection rod (290) for the removal as follows:
1 Remove the nuts (295), the washers (294) and the bolts (293).
2 Disconnect the rod-ends (281) and (292) from the center rod (291) and remove all parts from the door structure.
(2) Do the same steps to remove the horizontal connection rod (296).
(3) Remove the vertical control rod (328) as follows:
(a) Install the PIN - RIGGING (311) into the bearing assy (329) and the shaft lever (332).
(b) Disconnect the lower fork-end of the control rod (328) from the shaft lever (327) as follows:
1 Remove and discard the cotter pin (325) from the nut (326).
2 Remove the nut (326), the washers (312) and the bolt (311).
3 Disconnect the connection rod (328) from the shaft lever (327).
(c) Disconnect the upper fork-end of the connection rod (328) from the shaft lever (332) as follows:
1 Remove and discard the cotter pin (335) from the nut (333).
2 Remove the nut (333), the washers (331) and the bolt (330).
3 Disconnect the connection rod (328) from the shaft lever (332).
(4) Remove the vertical control rod (317) as follows:
(a) Disconnect the lower fork-end of the connection rod (317) from the drift pin lever (321) as follows:
1 Remove and discard the cotter pin (318) from the nut (319).
2 Remove the nut (319), the washers (320) and the bolt (322).
3 Disconnect the connection rod (317) from the drift pin lever (321).
(b) Disconnect the upper fork-end of the connection rod (317) from the shaft lever (314) as follows:
1 Remove and discard the cotter pin (323) from the nut (324).
2 Remove the nut (324), the washers (316) and the bolt (315).
3 Disconnect the connection rod (317) from the shaft lever (314).
(5) Disassemble the bearing housing (329) as follows:
(a) Remove the rigging pin (311) from the bearing housing (329).
(b) Remove the nut (347), the spacer (346) and the tapered pin (345) from the bellcrank lever (299).
(c) Remove the bellcrank lever (299) from the support shaft (344).
(d) Remove the nut (341), the spacer (342) and the tapered pin (343) from the shaft lever (332).
(e) Remove the support shaft (344) from the bearing housing (329) and collect the shaft lever (332).
(6) Disassemble the housing assy (359) as follows:
(a) Remove the screws (358), the washers (357) and the housing assy (359) from the beam (349).
(b) Remove the nut (356), the spacer (355) and the tapered pin (354) from the shaft lever (327).
(c) Remove the shaft lever (327) and the spacer (353) from the support shaft (348).
(d) Remove the nut (350), the spacer (351 and the tapered pin (352) from the shaft lever (314).
(e) Remove the support shaft (348) from the housing (359) and collet the shaft lever (314).
Subtask 52-31-21-020-064-G ** ON A/C NOT FOR ALL NOTE: The linkage assembly includes the horizontal connection rods (290) and (296) and the vertical control rods (328) and (317).
(1) Remove the horizontal connection rod (290) as follows: (a) Disconnect the rod-end (292) from the bellcrank lever (299) as follows:
1 Remove and discard the cotter pin (301) from the nut (300).
2 Remove the nut (300), the washers (297) and the bolt (298).
3 Remove the rod-end (292) from the bellcrank lever (299).
(b) Disconnect the rod-end (281) from the drift pin (283) as follows:
1 Remove and discard the cotter pin (285) from the nut (286).
2 Remove the nut (286), the washers (287) and (289) and the bolt (282).
3 Disconnect the rod-end (281) from the drift pin (283).
4 If necessary, remove the bush (288) from the drift pin (283).
(c) Disassemble the horizontal connection rod (290) for the removal as follows:
1 Remove the nuts (295), the washers (294) and the bolts (293).
2 Disconnect the rod-ends (281) and (292) from the center rod (291) and remove all parts from the door structure.
(2) Do the same steps to remove the horizontal connection rod (296).
(3) Remove the vertical control rod (328) as follows:
(a) Install the PIN - RIGGING (311) into the bearing assy (329) and the shaft lever (332).
(b) Disconnect the lower fork-end of the control rod (328) from the shaft lever (327) as follows:
1 Remove and discard the cotter pin (325) from the nut (326).
2 Remove the nut (326), the washers (312) and the bolt (311).
3 Disconnect the connection rod (328) from the shaft lever (327).
(c) Disconnect the upper fork-end of the connection rod (328) from the shaft lever (332) as follows:
1 Remove and discard the cotter pin (335) from the nut (333).
2 Remove the nut (333), the washers (331) and the bolt (330).
3 Disconnect the connection rod (328) from the shaft lever (332).
(4) Remove the vertical control rod (317) as follows:
(a) Disconnect the lower fork-end of the connection rod (317) from the drift pin lever (321) as follows:
1 Remove and discard the cotter pin (318) from the nut (319).
2 Remove the nut (319), the washers (320) and the bolt (322).
3 Disconnect the connection rod (317) from the drift pin lever (321).
(b) Disconnect the upper fork-end of the connection rod (317) from the shaft lever (314) as follows:
1 Remove and discard the cotter pin (323) from the nut (324).
2 Remove the nut (324), the washers (316) and the bolt (315).
3 Disconnect the connection rod (317) from the shaft lever (314).
(5) Disassemble the bearing housing (329) as follows:
(a) Remove the rigging pin (311) from the bearing housing (329).
(b) Remove the nut (347), the spacer (346) and the tapered pin (345) from the bellcrank lever (299).
(c) Remove the bellcrank lever (299) from the support shaft (344).
(d) Remove the nut (341), the spacer (342) and the tapered pin (343) from the shaft lever (332).
(e) Remove the support shaft (344) from the bearing housing (329) and collect the shaft lever (332).
(6) Disassemble the housing assy (359) as follows:
(a) Remove the screws (358), the washers (357) and the housing assy (359) from the beam (349).
(b) Remove the nut (356), the spacer (355) and the tapered pin (354) from the shaft lever (327).
(c) Remove the shaft lever (327) and the spacer (353) from the support shaft (348).
(d) Remove the nut (350), the spacer (351 and the tapered pin (352) from the shaft lever (314).
(e) Remove the support shaft (348) from the housing (359) and collet the shaft lever (314).
C. Removal of the Drift Pin Assembly
(1) Remove and discard the cotter pin (1) from the nut (2).
(2) Remove the nut (2), the washers (3) and (5) and the bolt (7) to disconnect the drift pin (8) from the linkage (6).
(3) Move the drift pin (8) out of the edge member bearing (9).
(4) If necessary, remove the bush (4) from the fork end of the drift pin (8).
Subtask 52-31-21-020-065-G ** ON A/C NOT FOR ALL (1) Remove and discard the cotter pin (1) from the nut (2).
(2) Remove the nut (2), the washers (3) and (5) and the bolt (7) to disconnect the drift pin (8) from the linkage (6).
(3) Move the drift pin (8) out of the edge member bearing (9).
(4) If necessary, remove the bush (4) from the fork end of the drift pin (8).
D. Removal of the Linkage Assembly
(a) Disconnect the rod-end from the bellcrank lever (37) as follows:
1 Remove and discard the cotter pin (27) from the nut (26).
2 Remove the nut (26), the washers (25) and the bolt (24).
3 Remove the horizontal connection rod (28) from the bellcrank lever (37).
(2) Remove the horizontal connection rod (42) as follows:
(a) Disconnect the rod-end from the bellcrank lever (41) as follows:
1 Remove and discard the cotter pin (27) from the nut (26).
2 Remove the nut (26), the washers (25) and the bolt (24).
3 Remove the horizontal connection rod (42) from the bellcrank lever (41).
(3) Remove the horizontal connection rod (29) as follows:
(a) Disconnect the rod-end from the bellcrank levers (37) and (41) as follows:
1 Remove and discard the cotter pins (20) from the nuts (21).
2 Remove the nuts (21), the washers (22) and the bolts (23).
3 Remove the horizontal connection rod (29).
(4) Remove the vertical control rod (35) as follows:
(a) Disconnect the rod-end from the bellcrank lever (40) as follows:
1 Remove and discard the cotter pins (34) from the nuts (33).
2 Remove the nuts (33), the washers (32) and the bolts (31).
3 Remove the vertical control rod (35) from the bellcrank lever (40) and the lever of the cover assembly (36).
NOTE: The linkage assembly includes the horizontal connection rods (28), (29) and (42) and the vertical control rod (35).
(1) Remove the horizontal connection rod (28) as follows: (a) Disconnect the rod-end from the bellcrank lever (37) as follows:
1 Remove and discard the cotter pin (27) from the nut (26).
2 Remove the nut (26), the washers (25) and the bolt (24).
3 Remove the horizontal connection rod (28) from the bellcrank lever (37).
(2) Remove the horizontal connection rod (42) as follows:
(a) Disconnect the rod-end from the bellcrank lever (41) as follows:
1 Remove and discard the cotter pin (27) from the nut (26).
2 Remove the nut (26), the washers (25) and the bolt (24).
3 Remove the horizontal connection rod (42) from the bellcrank lever (41).
(3) Remove the horizontal connection rod (29) as follows:
(a) Disconnect the rod-end from the bellcrank levers (37) and (41) as follows:
1 Remove and discard the cotter pins (20) from the nuts (21).
2 Remove the nuts (21), the washers (22) and the bolts (23).
3 Remove the horizontal connection rod (29).
(4) Remove the vertical control rod (35) as follows:
(a) Disconnect the rod-end from the bellcrank lever (40) as follows:
1 Remove and discard the cotter pins (34) from the nuts (33).
2 Remove the nuts (33), the washers (32) and the bolts (31).
3 Remove the vertical control rod (35) from the bellcrank lever (40) and the lever of the cover assembly (36).