DOC AIRBUS | AMM A320FFunctional Check of MLG Torque Links for Excessive Play
TASK 32-11-27-200-001-A
Functional Check of MLG Torque Links for Excessive Play
Refer to the MPD TASK: 321127-01
FUNCTIONAL CHECK OF MLG TORQUE LINKS FOR EXCESSIVE PLAY
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 32-11-27-941-051-A
Subtask 32-11-27-220-059-B
Subtask 32-11-27-410-051-A
[Rev.10 from 2021]
2026.04.01 00:40:51 UTC
Functional Check of MLG Torque Links for Excessive Play
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
WARNING:
MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
1. Reason for the JobRefer to the MPD TASK: 321127-01
FUNCTIONAL CHECK OF MLG TORQUE LINKS FOR EXCESSIVE PLAY
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | MICROMETER - EXTERNAL |
| No specific | AR | MICROMETER - INTERNAL |
| No specific | AR | MICROMETER 50 TO 75 MM (2 TO 3 IN) - EXTERNAL |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 731 | L.H MAIN GEAR |
| 741 | R.H MAIN GEAR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 07-11-00-581-001-A | Lifting for Aircraft Maintenance Operations |
| TASK 07-11-00-586-002-A | Lowering of the Aircraft for Maintenance Operations |
| TASK 07-12-00-582-002-A | Jacking of the Main Landing Gear |
| TASK 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| TASK 29-14-00-614-001-A | Depressurization of the Hydraulic Reservoirs |
| TASK 32-00-00-481-001-A | Installation of the Safety Devices on the Landing Gears |
| TASK 32-11-11-000-001-A | Removal of the MLG Leg Assembly |
| TASK 32-11-11-400-001-A | Installation of the MLG Leg Assembly |
| TASK 32-11-27-000-001-A | Removal of the MLG Torque Links |
| TASK 32-11-27-400-001-A | Installation of the MLG Torque Links |
| TASK 32-11-29-000-001-A | Removal of the Torque Link Damper |
| TASK 32-11-29-400-001-A | Installation of the Torque Link Damper |
| TASK 32-41-11-000-006-A | Removal of the MLG Wheel |
| TASK 32-41-11-400-006-A | Installation of the MLG Wheel |
| TASK 32-42-27-000-001-A | Removal of the Brake |
| TASK 32-42-27-400-001-A | Installation of the Brake |
Top and Bottom Torque-Links Axial Clearance CheckSubtask 32-11-27-941-051-A
A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On panel 400VU:
(5) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic systems.
Subtask 32-11-27-860-053-A (1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On panel 400VU:
- Make sure that the landing-gear control-lever 6GA is in the DOWN position
- Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the landing gear.
(5) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic systems.
B. Aircraft Maintenance Configuration
(1) Depressurize the Yellow and the Green Hydraulic systems (Ref. AMM TASK 29-00-00-864-001).
(2) Make sure that the Yellow and the Green Hydraulic reservoirs have been depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Lift the applicable MLG axle (Ref. AMM TASK 07-12-00-582-002) or lift the aircraft on jacks (Ref. AMM TASK 07-11-00-581-001).
Subtask 32-11-27-010-052-A (1) Depressurize the Yellow and the Green Hydraulic systems (Ref. AMM TASK 29-00-00-864-001).
(2) Make sure that the Yellow and the Green Hydraulic reservoirs have been depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Lift the applicable MLG axle (Ref. AMM TASK 07-12-00-582-002) or lift the aircraft on jacks (Ref. AMM TASK 07-11-00-581-001).
C. Get Access
(1) Remove the applicable MLG wheels (Ref. AMM TASK 32-41-11-000-006) and brakes (Ref. AMM TASK 32-42-27-000-001).
4. Procedure(1) Remove the applicable MLG wheels (Ref. AMM TASK 32-41-11-000-006) and brakes (Ref. AMM TASK 32-42-27-000-001).
Subtask 32-11-27-220-059-B
A. Inspection Procedure
(1) Do a check of the axial clearances at the connections of the top and bottom torque-link hinges:
(a) At the top, make sure that the total of dimensions A + B is not more than 1.156 mm (0.046 in.).
(b) At the bottom, make sure that the total of dimensions C + D is not more than 1.156 mm (0.046 in.).
(2) If you find a dimension that is not correct:
(a) Remove the applicable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-000-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-000-001).
(b) Send the removed component to the workshop for the applicable repair procedure.
(c) Install the serviceable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-400-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-400-001).
Subtask 32-11-27-220-058-B (1) Do a check of the axial clearances at the connections of the top and bottom torque-link hinges:
(a) At the top, make sure that the total of dimensions A + B is not more than 1.156 mm (0.046 in.).
(b) At the bottom, make sure that the total of dimensions C + D is not more than 1.156 mm (0.046 in.).
(2) If you find a dimension that is not correct:
(a) Remove the applicable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-000-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-000-001).
(b) Send the removed component to the workshop for the applicable repair procedure.
(c) Install the serviceable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-400-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-400-001).
B. Inspection Procedure
(1) Do a check of the radial clearance at the top torque-link joint as follows:
(a) Carefully remove the top torque-link pin (Ref. AMM TASK 32-11-27-000-001).
(b) Use the MICROMETER 50 TO 75 MM (2 TO 3 IN) - EXTERNAL to measure diameter X of the pin and record the minimum dimension.
1 Measure the diameter of the pin where it touches the bushes in the top torque link and the MLG leg.
(c) Use the MICROMETER - INTERNAL to measure the internal diameters E and F of the bushes in the:
(d) Subtract dimension X from the maximum dimension E or F to give the clearance at the top pin position. A maximum in-service clearance of 0.119 mm (0.0047 in.) is permitted.
(e) Install the top torque-link pin (Ref. AMM TASK 32-11-27-400-001).
(2) Do a check of the radial clearance at the bottom torque-link joint as follows:
(a) Carefully remove the bottom torque-link pin (Ref. AMM TASK 32-11-27-000-001).
(b) Use the MICROMETER 50 TO 75 MM (2 TO 3 IN) - EXTERNAL to measure diameter Y of the pin and record the minimum dimension.
1 Measure the diameter of the pin where it touches the bushes in the bottom torque link and the shock absorber.
(c) Use the MICROMETER - INTERNAL to measure the internal diameters G and H of the bushes in the:
(d) Subtract dimension Y from the maximum dimension G or H to give the clearance at the bottom pin position. A maximum in-service clearance of 0.119 mm (0.0047 in.) is permitted.
(e) Install the bottom torque-link pin (Ref. AMM TASK 32-11-27-400-001).
(3) If you find a dimension that is not correct:
(a) Remove the applicable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-000-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-000-001).
(b) Send the removed component to the workshop for the applicable repair procedure.
(c) Install the serviceable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-400-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-400-001).
Subtask 32-11-27-220-060-C (1) Do a check of the radial clearance at the top torque-link joint as follows:
(a) Carefully remove the top torque-link pin (Ref. AMM TASK 32-11-27-000-001).
(b) Use the MICROMETER 50 TO 75 MM (2 TO 3 IN) - EXTERNAL to measure diameter X of the pin and record the minimum dimension.
1 Measure the diameter of the pin where it touches the bushes in the top torque link and the MLG leg.
(c) Use the MICROMETER - INTERNAL to measure the internal diameters E and F of the bushes in the:
- Top torque link
- MLG leg.
(d) Subtract dimension X from the maximum dimension E or F to give the clearance at the top pin position. A maximum in-service clearance of 0.119 mm (0.0047 in.) is permitted.
(e) Install the top torque-link pin (Ref. AMM TASK 32-11-27-400-001).
(2) Do a check of the radial clearance at the bottom torque-link joint as follows:
(a) Carefully remove the bottom torque-link pin (Ref. AMM TASK 32-11-27-000-001).
(b) Use the MICROMETER 50 TO 75 MM (2 TO 3 IN) - EXTERNAL to measure diameter Y of the pin and record the minimum dimension.
1 Measure the diameter of the pin where it touches the bushes in the bottom torque link and the shock absorber.
(c) Use the MICROMETER - INTERNAL to measure the internal diameters G and H of the bushes in the:
- Bottom torque link
- Shock absorber.
(d) Subtract dimension Y from the maximum dimension G or H to give the clearance at the bottom pin position. A maximum in-service clearance of 0.119 mm (0.0047 in.) is permitted.
(e) Install the bottom torque-link pin (Ref. AMM TASK 32-11-27-400-001).
(3) If you find a dimension that is not correct:
(a) Remove the applicable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-000-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-000-001).
(b) Send the removed component to the workshop for the applicable repair procedure.
(c) Install the serviceable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-400-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-400-001).
C. Inspection Procedure
(1) Do a check of the radial clearances at the torque-link apex joint as follows:
(a) Carefully remove the torque-link apex pin (1) and the torque-link sleeves (2) and (3) (Ref. AMM TASK 32-11-29-000-001). Make sure that each sleeve is correctly identified with the applicable torque link.
(b) At the top torque-link bushes:
1 Use the MICROMETER - INTERNAL to measure the internal diameters R and S of the bushes and record the maximum dimension.
2 Use the MICROMETER - EXTERNAL to measure the external diameters P of the sleeve (2) and record the minimum dimension.
3 Subtract dimension P from the maximum dimension R or S to give the sleeve clearance. A maximum in-service sleeve clearance of 0.50 mm (0.0197 in.) is permitted.
4 Use the MICROMETER - INTERNAL to measure the internal diameter Q of the sleeve (2) and record the maximum dimension.
5 Use the MICROMETER - EXTERNAL to measure the external diameter N of the pin (1) and record the minimum dimension.
a Measure the diameter of the pin where it touches the top torque link.
6 Subtract dimension N from the maximum dimension Q to give the pin clearance. A maximum in-service pin clearance of 0.134 mm (0.0053 in.) is permitted.
(c) At the bottom torque-link bushes:
1 Use the MICROMETER - INTERNAL to measure the internal diameters T and U of the bushes and record the maximum dimension.
2 Use the MICROMETER - EXTERNAL to measure the external diameters W and X of the sleeve (3). Make sure that the measurements are taken at a position 20 mm (0.7874 in.) from each end of the sleeve (3).
4 Subtract dimension X from the maximum dimension U to give the sleeve clearance. A maximum in-service sleeve clearance of 0.25 mm (0.0098 in.) is permitted.
5 Use the MICROMETER - INTERNAL to measure the internal diameter V of the sleeve (3) and record the maximum dimension.
6 Use the MICROMETER - EXTERNAL to measure the external diameter N of the pin (1) and record the minimum dimension.
8 Install the sleeves (2) and (3) and the torque-link apex pin (1) (Ref. AMM TASK 32-11-29-400-001).
(2) If you find a dimension that is not correct:
(a) Remove the applicable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-000-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-000-001).
(b) Send the removed component to the workshop for the applicable repair procedure.
(c) Install the serviceable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-400-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-400-001).
5. Close-up(1) Do a check of the radial clearances at the torque-link apex joint as follows:
(a) Carefully remove the torque-link apex pin (1) and the torque-link sleeves (2) and (3) (Ref. AMM TASK 32-11-29-000-001). Make sure that each sleeve is correctly identified with the applicable torque link.
(b) At the top torque-link bushes:
1 Use the MICROMETER - INTERNAL to measure the internal diameters R and S of the bushes and record the maximum dimension.
2 Use the MICROMETER - EXTERNAL to measure the external diameters P of the sleeve (2) and record the minimum dimension.
3 Subtract dimension P from the maximum dimension R or S to give the sleeve clearance. A maximum in-service sleeve clearance of 0.50 mm (0.0197 in.) is permitted.
4 Use the MICROMETER - INTERNAL to measure the internal diameter Q of the sleeve (2) and record the maximum dimension.
5 Use the MICROMETER - EXTERNAL to measure the external diameter N of the pin (1) and record the minimum dimension.
a Measure the diameter of the pin where it touches the top torque link.
6 Subtract dimension N from the maximum dimension Q to give the pin clearance. A maximum in-service pin clearance of 0.134 mm (0.0053 in.) is permitted.
(c) At the bottom torque-link bushes:
1 Use the MICROMETER - INTERNAL to measure the internal diameters T and U of the bushes and record the maximum dimension.
2 Use the MICROMETER - EXTERNAL to measure the external diameters W and X of the sleeve (3). Make sure that the measurements are taken at a position 20 mm (0.7874 in.) from each end of the sleeve (3).
NOTE: The dimensions are taken at positions W and X to make sure that only the parallel part of the sleeve is measured.
3 Subtract dimension W from the maximum dimension T to give the sleeve clearance. A maximum in-service sleeve clearance of 0.25 mm (0.0098 in.) is permitted. 4 Subtract dimension X from the maximum dimension U to give the sleeve clearance. A maximum in-service sleeve clearance of 0.25 mm (0.0098 in.) is permitted.
5 Use the MICROMETER - INTERNAL to measure the internal diameter V of the sleeve (3) and record the maximum dimension.
6 Use the MICROMETER - EXTERNAL to measure the external diameter N of the pin (1) and record the minimum dimension.
NOTE: Measure the diameter of the pin where it touches the bottom torque link.
7 Subtract dimension N from the maximum dimension V to give the pin clearance. A maximum in-service pin clearance of 0.144 mm (0.0057 in.) is permitted. 8 Install the sleeves (2) and (3) and the torque-link apex pin (1) (Ref. AMM TASK 32-11-29-400-001).
(2) If you find a dimension that is not correct:
(a) Remove the applicable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-000-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-000-001).
(b) Send the removed component to the workshop for the applicable repair procedure.
(c) Install the serviceable component:
1 For the MLG torque link (Ref. AMM TASK 32-11-27-400-001).
2 For the MLG leg assembly (Ref. AMM TASK 32-11-11-400-001).
Subtask 32-11-27-410-051-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable MLG brakes (Ref. AMM TASK 32-42-27-400-001) and the wheels (Ref. AMM TASK 32-41-11-400-006).
Subtask 32-11-27-860-054-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable MLG brakes (Ref. AMM TASK 32-42-27-400-001) and the wheels (Ref. AMM TASK 32-41-11-400-006).
B. Aircraft Maintenance Configuration
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Lower the applicable MLG off the jack (Ref. AMM TASK 07-12-00-582-002) or lower the aircraft off jacks (Ref. AMM TASK 07-11-00-586-002).
Subtask 32-11-27-942-052-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Lower the applicable MLG off the jack (Ref. AMM TASK 07-12-00-582-002) or lower the aircraft off jacks (Ref. AMM TASK 07-11-00-586-002).
C. Remove the Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.