DOC AIRBUS | AMM A320FRemoval of the Pitch Trim Control Stop and Gearset Unit
TASK 27-41-43-000-001-A
Removal of the Pitch Trim Control Stop and Gearset Unit
1. Reason for the Job
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 27-41-43-010-055-A
Subtask 27-41-43-020-050-A
[Rev.10 from 2021]
2026.03.31 23:51:01 UTC
Removal of the Pitch Trim Control Stop and Gearset Unit
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | 1 | CAP - BLANKING |
| 0U190360 | 1 | PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER |
| 98D27403000000 | 1 | HOLDING TOOL-TRIM CTL LOWER SHAFT |
| 98D27403500000 | 1 | PITCH TRIM CONTROL LOCKING |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 120 | AVIONICS COMPARTMENT |
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| 811 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 23-13-13-000-001-A | Removal of the Radio Management Panel (RMP) |
| TASK 23-51-12-000-001-A | Removal of the Audio Control Panel (ACP) |
| TASK 27-41-00-820-002-A | Adjustment of the THS Control-Cables Length |
| TASK 29-24-00-863-001-A | Pressurize the Yellow Hydraulic System with the Electric Pump |
| TASK 29-24-00-864-001-A | Depressurize the Yellow Hydraulic System |
| TASK 34-41-12-000-001-A | Removal of the Weather-Radar Control Unit |
FLOOD LT/INTEG LT Panel 111VUSubtask 27-41-43-010-055-A
A. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zone 121.
(2) Open the access door 811.
Subtask 27-41-43-860-050-A (1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zone 121.
(2) Open the access door 811.
B. Aircraft Maintenance Configuration
(1) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-24-00-863-001).
(2) On the center pedestal, make sure that the pitch-trim control wheels are in the neutral position.
(3) Install the 98D27403500000 PITCH TRIM CONTROL LOCKING on the pitch-trim control wheels.
(4) Put the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER on the input lever of the Trimmable Horizontal Stabilizer (THS) actuator.
(5) Adjust the cable length. To do this, adjust one turnbuckle in one direction and adjust the other turnbuckle in the opposite direction to keep the cable tension.
(6) Do a check of the cable tension on the cable tension-compensator indicator (Ref. AMM TASK 27-41-00-820-002).
(7) Remove the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER on the THS actuator mechanical-input.
(8) Do a check of the spring back of the THS control wheel on the nose-up and nose-down positions.
(9) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-24-00-864-001).
(10) Install the 98D27403000000 HOLDING TOOL-TRIM CTL LOWER SHAFT on the drive shaft (23).
(11) Install the standard locking bolt on the chain (1).
(12) Remove the Radio Management Panel (1RG1) (Ref. AMM TASK 23-13-13-000-001).
(13) Remove the Audio Control Panel (2RN1) (Ref. AMM TASK 23-51-12-000-001).
(14) Remove FLOOD LT/INTEG LT panel 111VU:
(a) Release the fasteners (29) of the panel (30) and disengage the panel (30) from its housing.
(b) Disconnect the connector (32) from the panel (30).
(c) Remove the panel (30).
(d) Put the CAP - BLANKING on the connectors (31) and (32).
(15) Remove the weather radar control-unit (3SQ) (Ref. AMM TASK 34-41-12-000-001).
4. Procedure(1) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-24-00-863-001).
(2) On the center pedestal, make sure that the pitch-trim control wheels are in the neutral position.
(3) Install the 98D27403500000 PITCH TRIM CONTROL LOCKING on the pitch-trim control wheels.
(4) Put the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER on the input lever of the Trimmable Horizontal Stabilizer (THS) actuator.
(5) Adjust the cable length. To do this, adjust one turnbuckle in one direction and adjust the other turnbuckle in the opposite direction to keep the cable tension.
(6) Do a check of the cable tension on the cable tension-compensator indicator (Ref. AMM TASK 27-41-00-820-002).
(7) Remove the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER on the THS actuator mechanical-input.
(8) Do a check of the spring back of the THS control wheel on the nose-up and nose-down positions.
(9) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-24-00-864-001).
(10) Install the 98D27403000000 HOLDING TOOL-TRIM CTL LOWER SHAFT on the drive shaft (23).
(11) Install the standard locking bolt on the chain (1).
(12) Remove the Radio Management Panel (1RG1) (Ref. AMM TASK 23-13-13-000-001).
(13) Remove the Audio Control Panel (2RN1) (Ref. AMM TASK 23-51-12-000-001).
(14) Remove FLOOD LT/INTEG LT panel 111VU:
(a) Release the fasteners (29) of the panel (30) and disengage the panel (30) from its housing.
(b) Disconnect the connector (32) from the panel (30).
(c) Remove the panel (30).
(d) Put the CAP - BLANKING on the connectors (31) and (32).
(15) Remove the weather radar control-unit (3SQ) (Ref. AMM TASK 34-41-12-000-001).
Subtask 27-41-43-020-050-A
A. Removal of the Stop and Gearset Unit
(1) Remove the lateral panel to get access to the chain
(2) Remove and discard the locwire from the nut (27) and the srew (28).
(3) Loosen the nut (27).
(4) Loosen the srew (28) to release the chain tension adjuster (26).
(5) Remove and discard the cotter pins (8), remove the nuts (9) and the washers (7).
(6) Remove the screws (3) and remove the cover (4).
(7) Remove and discard the cotter pins (17), remove the nuts (18), the washers (16) and the screws (11).
(8) Remove and discard the cotter pin (13), remove the nut (14), the washer (15) and the tapered pin (19).
(9) Remove and discard the five nuts (6), remove the four screws (10) and the screw (21). Release the chain (22) from the gear (2), remove the stop unit (5) and the yoke (12).
(1) Remove the lateral panel to get access to the chain
(2) Remove and discard the locwire from the nut (27) and the srew (28).
(3) Loosen the nut (27).
(4) Loosen the srew (28) to release the chain tension adjuster (26).
(5) Remove and discard the cotter pins (8), remove the nuts (9) and the washers (7).
(6) Remove the screws (3) and remove the cover (4).
(7) Remove and discard the cotter pins (17), remove the nuts (18), the washers (16) and the screws (11).
(8) Remove and discard the cotter pin (13), remove the nut (14), the washer (15) and the tapered pin (19).
(9) Remove and discard the five nuts (6), remove the four screws (10) and the screw (21). Release the chain (22) from the gear (2), remove the stop unit (5) and the yoke (12).