W DOC AIRBUS | AMM A320F

Cleaning of the Main Landing Gear

TASK 32-11-00-100-002-A
Cleaning of the Main Landing Gear

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.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
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.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 731
ZONE: 741
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
AIR SOURCE 0.3 TO 0.7 BAR (5 TO 10 PSI)- FILTERED, DRY
No specific
AR
BRUSH - BRISTLED
No specific
AR
COVER - WATERPROOF
No specific
1
PAINTBRUSH
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SCRAPER - PLASTIC
No specific
AR
SCRAPER - WOODEN
No specific
AR
SPONGE
No specific
1
SPRAYING EQUIPMENT - LOW PRESSURE
No specific
1
WARNING NOTICE(S)
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.02ABA1)
Phosphate Ester Hydraulic Fluid-General Power - -
(Material No.02BBB9)
Mineral Hydraulic Fluid-Damper - -
(Material No.08BBB1)
Non Aqueous Cleaner-- Petroleum Based -
(Material No.12ABE2)
Corrosion Preventive Compound-Water Displacing Oily Film System
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
731
L.H MAIN GEAR
741
R.H MAIN GEAR
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 12-22-32-640-001-A
Lubrication of Main Landing Gear and Doors
TASK 29-10-00-864-001-A
Depressurize the Green Hydraulic System
TASK 32-00-00-081-001-A
Removal of the Safety Devices from the Landing Gears
TASK 32-00-00-481-001-A
Installation of the Safety Devices on the Landing Gears
TASK 32-12-00-010-001-A
Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A
Close the Main Gear Doors after Access
F Chromium Surfaces of the MLG
3. Job Set-up
Subtask 32-11-00-941-087-A
A. Safety Precautions
   (1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
   (2) On panel 400VU:
     (a) Make sure that the landing-gear control lever 6GA is in the DOWN position.
     (b) Put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.
   (3) Make sure that the safety devices are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
   (4) Make sure that the Green Hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
   (5) Put an applicable COVER - WATERPROOF on:
  • The wheels and their tires
  • All rubber items
  • The hinges
  • The chromium surfaces.
NOTE: Make sure the covers you use give sufficient protection during the procedure to clean the MLG.
Subtask 32-11-00-010-076-A
B. Get Access
   (1) Open the applicable MLG doors (Ref. AMM TASK 32-12-00-010-001).
   (2) If necessary, put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE adjacent to the applicable MLG leg.
4. Procedure
Subtask 32-11-00-100-051-A
A. Cleaning of the Main Landing Gear
CAUTION: DO NOT USE HIGH-PRESSURE SPRAYING EQUIPMENT TO CLEAN THE LANDING GEAR AND THE LANDING GEAR BAYS. IF YOU USE HIGH-PRESSURE EQUIPMENT, THIS CAN CAUSE WATER TO GO INTO ELECTRICAL EQUIPMENT.
   (1) Remove mud with the SPONGE soaked in water and the SCRAPER - PLASTIC or the SCRAPER - WOODEN.
   (2) Compressed air procedure:
WARNING: WHEN YOU USE COMPRESSED AIR:
  • USE THE CORRECT PROTECTION (FACE SHIELD OR GOGGLES)
  • DO NOT POINT THE AIRFLOW AT YOURSELF OR OTHER PERSONS.
LOOSE PARTICLES AND/OR HIGH PRESSURE AIR CAN CAUSE INJURY.
     (a) Dry the areas where you removed mud with the AIR SOURCE 0.3 TO 0.7 BAR (5 TO 10 PSI)- FILTERED, DRY or a clean Textile-Lint free Cotton - (Material No.14SBA1) .
   (3) Application of the cleaning agents:
CAUTION: MAKE SURE THAT THE CLEANING AGENTS OR SOLVENTS DO NOT GET IN OR ON :
  • COMPONENT PARTS
  • PROTECTIVE COVERS
  • ELECTRICAL WIRING AND CONNECTORS.
     (a) Clean the MLG with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) . Use one of the items that follow to clean the MLG:
  • The SPONGE
  • A clean Textile-Lint free Cotton - (Material No.14SBA1)
  • The BRUSH - BRISTLED
  • The SPRAYING EQUIPMENT - LOW PRESSURE.
Start the cleaning from top of the MLG.
   (4) Dry the MLG with the AIR SOURCE 0.3 TO 0.7 BAR (5 TO 10 PSI)- FILTERED, DRY or a clean Textile-Lint free Cotton - (Material No.14SBA1) .
   (5) Use the PAINTBRUSH or SPRAYING EQUIPMENT - LOW PRESSURE to apply Corrosion Preventive Compound-Water Displacing Oily Film System (Material No.12ABE2) on the areas where the corrosion preventive compound was removed during the cleaning procedure.
   (6) Lubricate the items that you have cleaned (Ref. AMM TASK 12-22-32-640-001).
Subtask 32-11-00-100-052-A
B. Cleaning of the Chromium Surfaces
F Chromium Surfaces of the MLG
   (1) Remove the covers that you put on the chromium surfaces of the MLG.
   (2) Remove the safety devices from the applicable MLG (Ref. AMM TASK 32-00-00-081-001).
   (3) Clean the chromium surfaces with a clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
NOTE: It is not recommended to use Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) to clean the chromium surface of the MLG sliding tube. If necessary, use only a clean Textile-Lint free Cotton - (Material No.14SBA1) to clean the MLG sliding tube.
     (a) If Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) is used to clean the chromium surface of the MLG sliding tube:
  • Restore the MLG sliding tube with a clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) .
   (4) Apply the hydraulic fluid as follows:
     (a) Do not apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the chromium surface of the MLG sliding tube.
     (b) Put a small quantity of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) on a clean Textile-Lint free Cotton - (Material No.14SBA1) .
     (c) Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) only to the chromium surface of the lock-stay actuating cylinder.
   (5) Install the safety devices on the applicable MLG (Ref. AMM TASK 32-00-00-481-001).
5. Close-up
Subtask 32-11-00-410-073-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) If necessary, remove the access platform.
   (3) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
Subtask 32-11-00-942-088-A
B. Removal of Equipment
   (1) Remove the safety barriers.
   (2) Remove the WARNING NOTICE(S).
   (3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 00:39:48 UTC
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