Airbus a320 Mlg Doors Gvi

Customer : AEEType : TF-NRev. Date : Aug 01, 2015

Manual : AMMSelected applicability : ALL

52-81-18 PB 801 CONF 00 - DOOR - MAINLANDING GEAR, COMMON RAMP - REPAIRS

Print Date: October 30, 2015 Page 1 of 6© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.

** ON A/C 001-018, 025-025, 027-028, 053-104, 201-500, 513-700

52-81-18 PB 801 CONF 00 - DOOR - MAIN LANDING GEAR, COMMON RAMP - REPAIRS

TASK 52-81-18-300-802-AMain Landing-Gear Door - Replacement of the Central-Ramp Teflon Paint

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIALMANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOUSTART 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 CANCAUSE DAMAGE TO THE EQUIPMENT.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARECLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDINGGEAR.

CAUTION: DO NOT CAUSE DAMAGE TO THE SURFACES. THE COMPONENTS ARE MADE OF CARBON-FIBER REINFORCED PLASTIC.

1. Reason for the JobSelf explanatory

2Job Set-up Information

A. Fixtures, Tools, Test and Support Equipment REFERENCE QTY DESIGNATIONNo specific 1 ACCESS PLATFORM 2M (6 FT)No specific AR CLOTH-EMERY (GRADE 240)No specific AR CLOTH-EMERY (GRADE 280)No specific AR CLOTH-EMERY (GRADE 400)No specific AR SAFETY BARRIER(S)No specific AR SAFETY CLIP - CIRCUIT BREAKERNo specific 1 SCRAPER - NON METALLICNo specific 1 VACUUM CLEANERNo specific AR WARNING NOTICE(S)

B. Consumable Materials REFERENCE DESIGNATION(Material No. 04-DAB2) Primer Epoxy Paint-- Corrosion Inhibiting Structure(Material No. 04-EAC2) Primer Polyurethane Paint-- Corrosion Inhibiting Structure





REFERENCE DESIGNATION(Material No. 04-PAD2) Polyurethane Coating-- Abrasion Resistant Structure(Material No. 06-ABB1) Polysulfide Sealant-Fuel Tank Fillet -(Material No. 08-BBF1) Non Aqueous Cleaner-- Methyl-Ethyl-Ketone -(Material No. 10-ABC1) Surface Pretreatment-Light Alloys Chemical Conversion Yellow -

C. Referenced Information REFERENCE DESIGNATION(Ref. 12-34-24-869-002-A). Aircraft Bonding and Grounding (Earthing) for the Maintenance Opera-

tions(Ref. 12-34-24-869-002-A-01). Aircraft Grounding (Earthing) during Transit, Turnaround or Overnight

Stop(Ref. 29-10-00-864-001-A). Depressurize the Green Hydraulic System(Ref. 32-00-00-860-001-A). Flight Configuration Precautions with Electrical Power(Ref. 32-00-00-860-001-A-01). Flight Configuration Precautions without Electrical Power(Ref. 32-12-00-010-001-A). Open the Main Gear Doors for Access(Ref. 32-12-00-410-001-A). Close the Main Gear Doors after AccessMain Landing-Gear Door - Replacement of the Central-Ramp Teflon Paint SHEET 1

A

TEFLON PAINT

MLG DOORCENTRAL RAMP

RAMPBLISTER

T-SECTION

T-SECTION

A

A

A A15 mm

(0.591 in)

A

N_MM_528118_8_AEN0_01_01





Figure 52-81-18-991-00300-A / SHEET 1/1 - Main Landing-Gear Door - Replacement of the Central-Ramp Teflon Paint

** ON A/C 001-018, 025-025, 027-028, 053-104, 201-500, 513-700





3. Job Set-up

Subtask 52-81-18-941-052-A

A. Safety Precautions

(1) Make sure that the aircraft is electrically grounded (Ref. AMM TASK 12-34-24-869-002) .

(2) Put the safety barriers in position.

(3) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the mainlanding-gear (MLG) doors in case not properly secured the door levers.

(4) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the hydraulicsystems.

(5) Put the ACCESS PLATFORM 2M (6 FT) in position at zone 734 for the left (LH) MLG door and/orzone 744 for the right (RH) MLG door.

(6) Prevent the damage to the anti-ice heat elements (Ref. AMM TASK 32-00-00-860-001) .

Subtask 52-81-18-860-052-A

B. Depressurize the Aircraft Hydraulic Systems

(1) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) .

Subtask 52-81-18-865-054-A

C. Open, safety and tag this(these) circuit breaker(s):

PANEL DESIGNATION FIN LOCATION49VU L/G/LGCIU/SYS1/NORM 1GA C09121VU HYDRAULIC/BRAKING AND STEER-

ING/SYS2/SPLY4GG M36

121VU HYDRAULIC/BRAKING AND STEER-ING/SYS2/CTL

3GG M35


1GG M34

121VU HYDRAULIC/BRAKING AND STEER-ING/SYS1/IND AND/SPLY

2GG M33

121VU HYDRAULIC/Y HYD/PUMP ENG2/MONG 3700GD Q37121VU HYDRAULIC/Y HYD/PUMP ENG2/CTL 3701GD Q36121VU HYDRAULIC/LGCIU/SYS2 2GA Q35121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34121VU HYDRAULIC/G HYD/PUMP ENG1/CTL 1701GK R35121VU HYDRAULIC/G HYD/PUMP ENG1/

MONG1702GK R34

Subtask 52-81-18-010-052-A

D. Get Access

(1) Open the MLG door of the each side (Ref. AMM TASK 32-12-00-010-001) .

4. Procedure(Ref. Fig. Main Landing-Gear Door - Replacement of the Central-Ramp Teflon Paint SHEET 1)

Subtask 52-81-18-370-050-A

A. Replacement of the Central-Ramp Teflon Paint





NOTE: The following procedure gives the replacement for the LH side. Replacement for the RH side isequivalent.

(1) Remove the damaged teflon paint:

(a) Remove the damaged teflon paint from the ramp blister and the T-sections with a SCRAPER -NON METALLIC.

(b) Remove the bonding primer of the ramp blister and the T-sections with a CLOTH-EMERY(GRADE 240).

(c) Remove all unwanted material using a VACUUM CLEANER.

(d) Clean the mating surfaces of the ramp blister and the T-sections with Non Aqueous Cleaner--Methyl-Ethyl-Ketone - (Material No. 08-BBF1).

(2) Replace sealant:

(a) Fill any gaps between the ramp blister and the T-sections with Polysulfide Sealant-Fuel TankFillet - (Material No. 06-ABB1).

(b) Cure the sealant (refer to the manufacturer's instructions).

(c) Sand the surface of the sealant with CLOTH-EMERY (GRADE 280) and finish with CLOTH-EMERY (GRADE 400).· Make sure that you do not remove the remaining sealant from the gaps between T-sections.

(d) Remove all the unwanted material using a VACUUM CLEANER.

(e) Clean the mating surfaces of the ramp blister and the T-sections with Non Aqueous Cleaner--Methyl-Ethyl-Ketone - (Material No. 08-BBF1).

(3) Paint the central-ramp:

(a) Apply Surface Pretreatment-Light Alloys Chemical Conversion Yellow - (Material No. 10-ABC1).

(b) Apply Primer Polyurethane Paint-- Corrosion Inhibiting Structure (Material No. 04-EAC2) orPrimer Epoxy Paint-- Corrosion Inhibiting Structure (Material No. 04-DAB2) to the matingsurfaces of the ramp blister and the T-sections.

(c) Apply Polyurethane Coating-- Abrasion Resistant Structure (Material No. 04-PAD2) to thesurface of the ramp blister and the T-sections.

(d) Let the paint dry (refer to the manufacturer's instructions).

5. Close-up

Subtask 52-81-18-410-052-A

A. Close Access

(1) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001) .

Subtask 52-81-18-865-055-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL DESIGNATION FIN LOCATION49VU L/G/LGCIU/SYS1/NORM 1GA C09121VU HYDRAULIC/BRAKING AND STEER-

ING/SYS2/SPLY4GG M36


3GG M35


1GG M34





PANEL DESIGNATION FIN LOCATION121VU HYDRAULIC/BRAKING AND STEER-

ING/SYS1/IND AND/SPLY2GG M33

121VU HYDRAULIC/LGCIU/SYS2 2GA Q35121VU HYDRAULIC/G HYD/PUMP ENG1/CTL 1701GK R35121VU HYDRAULIC/G HYD/PUMP ENG1/

MONG1702GK R34

Subtask 52-81-18-942-052-A

C. Removal of Equipment

(1) Make sure that the work area is clean and clear of tools and other items.

(2) Remove the warning notice(s).

(3) Remove the access platform(s).

(4) Remove the safety barriers.Figure 52-81-18-991-00300-A / SHEET 1/1 - Main Landing-Gear Door - Replacement of the Central-Ramp TeflonPaint

End of document

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Airbus a320 Mlg Doors Gvi