DOC AIRBUS | AMM A320FDetailed Visual Inspection of the Thrust Reverser Blocker Door Hinges and Drag Link Bearings [PW11]
TASK 78-32-00-220-801-A
Detailed Visual Inspection of the Thrust Reverser Blocker Door Hinges and Drag Link Bearings
Refer to the MPD TASK: 783200-W1
DETAILED INSPECTION OF THE BLOCKER DOOR HINGES AND DRAG LINK BEARINGS.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 78-32-00-941-083-A ** ON A/C NOT FOR ALL
Subtask 78-32-00-410-100-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:32:07 UTC
Detailed Visual Inspection of the Thrust Reverser Blocker Door Hinges and Drag Link Bearings
WARNING:
WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobRefer to the MPD TASK: 783200-W1
DETAILED INSPECTION OF THE BLOCKER DOOR HINGES AND DRAG LINK BEARINGS.
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 | LIGHT SOURCE - INSPECTION |
| No specific | 1 | MAGNIFYING GLASS POWER 10X |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.PU1-0001) | lint-free cotton cloth |
| (Material No.PU2-0001) | alcohol, isopropyl |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-860-833-A | Procedure to Prevent Engine Motoring |
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-802-A | Closing of the Fan Cowl Doors |
| TASK 78-30-00-040-805-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-30-00-440-805-A | Reactivation of the Thrust Reverser System after Ground Maintenance |
| TASK 78-32-00-860-802-A | Manual Extension of the Thrust-Reverser Translating Sleeves |
| TASK 78-32-00-860-803-A | Manual Retraction of the Thrust-Reverser Translating Sleeves |
| TASK 78-32-32-000-801-A | Removal of the Thrust Reverser Blocker Door Drag Links |
| TASK 78-32-32-400-801-A | Installation of the Thrust Reverser Blocker Door Drag Links |
| TASK 78-32-33-000-801-A | Removal of the Thrust Reverser Blocker Doors |
| TASK 78-32-33-400-801-A | Installation of the Thrust Reverser Blocker Doors |
Thrust Reverser Blocker Door Hinges and Drag LinksSubtask 78-32-00-941-083-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
Subtask 78-32-00-010-100-A ** ON A/C NOT FOR ALL (1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
Subtask 78-32-00-040-078-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
C. Deactivation of the Thrust Reverser for Ground Maintenance
Subtask 78-32-00-010-105-A ** ON A/C NOT FOR ALL WARNING:
YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
(1) Do the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805). D. Get Access
(1) Manually extend the thrust-reverser translating sleeves (Ref. AMM TASK 78-32-00-860-802).
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
4. Procedure(1) Manually extend the thrust-reverser translating sleeves (Ref. AMM TASK 78-32-00-860-802).
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 78-32-00-220-050-A ** ON A/C NOT FOR ALL A. Detailed Visual Inspection of the Thrust Reverser Blocker Door Hinges and Drag Link Bearings
(1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems (UTAS) for disposition.
(2) Examine the thrust reverser blocker door hinges.
(a) Clean the surfaces of the blocker door hinges and attaching hardware with a clean lint-free cotton cloth (Material No.PU1-0001) andPU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl
(b) Use the LIGHT SOURCE - INSPECTION and the MAGNIFYING GLASS POWER 10X and examine hinge bearings of the blocker doors. Look for dents, wear, corrosion, scratches, cracks, gouges, liner migration or other damage. If you find damage, replace the blocker door (Ref. AMM TASK 78-32-33-000-801) and (Ref. AMM TASK 78-32-33-400-801) or contact UTAS for disposition.
(c) Use the LIGHT SOURCE - INSPECTION and the MAGNIFYING GLASS POWER 10X and examine the bolts, washers and nuts on the blocker door hinge bearings. Look for cracks, gouges, wear, corrosion, missing parts or other damage. If you find damage, replace the damaged part (Ref. AMM TASK 78-32-33-000-801) and (Ref. AMM TASK 78-32-33-400-801).
(d) Make sure that the hinge pins, washers and nuts are correctly attached. Tighten or replace the parts as necessary (Ref. AMM TASK 78-32-33-000-801) and (Ref. AMM TASK 78-32-33-400-801).
(3) Examine the thrust reverser drag link bearings.
(a) Clean the surfaces of the drag link ends and attaching hardware with a clean lint-free cotton cloth (Material No.PU1-0001) andPU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl PU2-0001 alcohol, isopropyl
(b) Use the LIGHT SOURCE - INSPECTION and the MAGNIFYING GLASS POWER 10X and examine the drag link bearings. Look for dents, wear, corrosion, scratches, cracks, gouges, liner migration or other damage. If you find damage, replace the drag link bearings (Ref. AMM TASK 78-32-32-000-801) and (Ref. AMM TASK 78-32-32-400-801) or contact UTAS for disposition.
(c) Use the LIGHT SOURCE - INSPECTION and the MAGNIFYING GLASS POWER 10X and examine the T-bolt and cap on the drag link fitting on the inner fixed structure. Use the LIGHT SOURCE - INSPECTION and the MAGNIFYING GLASS POWER 10X and examine the bolt, washers and nut on the blocker door end of the drag link. Look for cracks, gouges, wear, corrosion, missing parts or other damage. If you find damage, replace the damaged or missing part (Ref. AMM TASK 78-32-32-000-801) and (Ref. AMM TASK 78-32-32-400-801).
(d) Make sure that the T-bolt, cap, bolt, washers and nut are correctly attached. Tighten or replace the parts as necessary (Ref. AMM TASK 78-32-32-000-801) and (Ref. AMM TASK 78-32-32-400-801).
5. Close-up(1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems (UTAS) for disposition.
(2) Examine the thrust reverser blocker door hinges.
(a) Clean the surfaces of the blocker door hinges and attaching hardware with a clean lint-free cotton cloth (Material No.PU1-0001) and
(b) Use the LIGHT SOURCE - INSPECTION and the MAGNIFYING GLASS POWER 10X and examine hinge bearings of the blocker doors. Look for dents, wear, corrosion, scratches, cracks, gouges, liner migration or other damage. If you find damage, replace the blocker door (Ref. AMM TASK 78-32-33-000-801) and (Ref. AMM TASK 78-32-33-400-801) or contact UTAS for disposition.
(c) Use the LIGHT SOURCE - INSPECTION and the MAGNIFYING GLASS POWER 10X and examine the bolts, washers and nuts on the blocker door hinge bearings. Look for cracks, gouges, wear, corrosion, missing parts or other damage. If you find damage, replace the damaged part (Ref. AMM TASK 78-32-33-000-801) and (Ref. AMM TASK 78-32-33-400-801).
(d) Make sure that the hinge pins, washers and nuts are correctly attached. Tighten or replace the parts as necessary (Ref. AMM TASK 78-32-33-000-801) and (Ref. AMM TASK 78-32-33-400-801).
(3) Examine the thrust reverser drag link bearings.
(a) Clean the surfaces of the drag link ends and attaching hardware with a clean lint-free cotton cloth (Material No.PU1-0001) and
(b) Use the LIGHT SOURCE - INSPECTION and the MAGNIFYING GLASS POWER 10X and examine the drag link bearings. Look for dents, wear, corrosion, scratches, cracks, gouges, liner migration or other damage. If you find damage, replace the drag link bearings (Ref. AMM TASK 78-32-32-000-801) and (Ref. AMM TASK 78-32-32-400-801) or contact UTAS for disposition.
(c) Use the LIGHT SOURCE - INSPECTION and the MAGNIFYING GLASS POWER 10X and examine the T-bolt and cap on the drag link fitting on the inner fixed structure. Use the LIGHT SOURCE - INSPECTION and the MAGNIFYING GLASS POWER 10X and examine the bolt, washers and nut on the blocker door end of the drag link. Look for cracks, gouges, wear, corrosion, missing parts or other damage. If you find damage, replace the damaged or missing part (Ref. AMM TASK 78-32-32-000-801) and (Ref. AMM TASK 78-32-32-400-801).
(d) Make sure that the T-bolt, cap, bolt, washers and nut are correctly attached. Tighten or replace the parts as necessary (Ref. AMM TASK 78-32-32-000-801) and (Ref. AMM TASK 78-32-32-400-801).
Subtask 78-32-00-410-100-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Manually retract the thrust-reverser translating sleeves (Ref. AMM TASK 78-32-00-860-803).
Subtask 78-32-00-440-073-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Manually retract the thrust-reverser translating sleeves (Ref. AMM TASK 78-32-00-860-803).
B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 78-32-00-410-095-A ** ON A/C NOT FOR ALL