W DOC AIRBUS | AMM A320F

Measure the Fluid Particle Content of Green, Blue and Yellow Systems with Laser Particle Analyser

TASK 12-32-29-281-803-A
Measure the Fluid Particle Content of Green, Blue and Yellow Systems with Laser Particle Analyser

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:
  • FLUSH IT AWAY WITH CLEAN WATER
  • GET MEDICAL AID.
ZONE: 147
ZONE: 195
ZONE: 196
FIN: 1187GM
FIN: 2187GM
FIN: 3187GM
1. Reason for the Job
NOTE: This procedure gives the instructions to do a fluid sampling for an on-aircraft particle-contamination analysis with the Laser Particle Analyser (LPA2) tool. This tool will give immediate and accurate result of fluid particle content, to let A/C release.
NOTE: In case of contamination most appropriate procedure is the reclaim procedure. This procedure may require new fluid analysis results to be available before A/C release into service.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
CONTAINER - CLEAN, APPLICABLE
LPA20PSTA30
1
PARTICLE COUNTER
SKAA01
1
SAMPLING VALVE ADAPTER KIT
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.08BBF1)
Non Aqueous Cleaner_- Methyl-Ethyl-Ketone -
(Material No.14QFB1)
Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
147
MAIN GEAR WELL AND HYDRAULIC COMPARTMENT
195
HYDRAULIC COMPT AND FAIRINGS
196
HYDRAULIC COMPT AND FAIRINGS
195BB, 196BB
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
11
O-RING
AIPC 29-11-34-01-020
11
O-RING
AIPC 29-12-34-01-020
11
O-RING
AIPC 29-13-34-01-020
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 12-12-29-611-001-A
Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 12-36-29-600-001-A
Change of the Hydraulic Fluid in the Green Hydraulic System - with Ground Cart Available
TASK 12-36-29-600-002-A
Change of the Hydraulic Fluid in the Yellow Hydraulic System - with Ground Cart Available
TASK 12-36-29-600-003-A
Change of the Hydraulic Fluid in the Blue Hydraulic System - with Ground Cart Available
TASK 20-11-11-911-001-A
Safetying with Lockwire
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 27-14-00-710-001-A
Operational Test of the Aileron and Hydraulic Actuation
TASK 29-00-00-910-002-A
Safety Procedures of the Hydraulic System
TASK 29-10-00-863-001-A
Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-002-A
Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A
Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01
Pressurize the Blue Hydraulic System with the Blue Electric Pump
TASK 29-10-00-864-001-A
Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A
Depressurize the Yellow Hydraulic System
TASK 29-10-00-864-003-A
Depressurize the Blue Hydraulic System
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 Sampling Valve Connection with the Laser Particle Analyser (LPA2) Tool
F Sampling Valves - Location and Operation
3. Job Set-up
Subtask 12-32-29-860-052-A
A. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (2) If the hydraulic system was not in operation for more than one hour ago:
   (3) Pressurize the applicable hydraulic system:
Subtask 12-32-29-914-050-A
B. Safety Precautions
   (1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
Subtask 12-32-29-010-052-A
C. Get Access
   (1) Open the applicable access panel/door:
  • For the Green hydraulic system, open the left MLG door (Ref. AMM TASK 32-12-00-010-001).
  • For the Yellow hydraulic system, open access panel 196BB.
  • For the Blue hydraulic system, open access panel 195BB.
4. Procedure
Subtask 12-32-29-281-060-A
A. Collect a sample from the sampling valve with the Laser Particle Analyser (LPA2) Tool for an on-aircraft particle-contamination analysis
   (1) Flushing of the manifold and the sampling valve (10):
     (a) Remove the cap (8) from the sampling valve (10):
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
       1 Remove and discard the lockwire from the applicable sampling valve (10):
  • For the Green hydraulic system, sampling valve 1187GM
  • For the Blue hydraulic system, sampling valve 2187GM
  • For the Yellow hydraulic system, sampling valve 3187GM.
       2 Put the CONTAINER - CLEAN, APPLICABLE below the sampling valve (10).
       3 Remove the cap (8) from the sampling valve (10).
     (b) Make sure that the o-ring (11) of the sampling valve (10) is in the correct condition. If the o-ring (11) is damaged replace it:
       1 Remove and discard the o-ring (11).
       2 Install the new o-ring (11):
     (c) Carefully clean the sampling valve (10) with the petroleum ether, Non Aqueous Cleaner_- Methyl-Ethyl-Ketone - (Material No.08BBF1) and the Textile-Lint free Cotton - (Material No.14SBA1) .
     (d) Put the notch (13) in the head of the cap (8) below the head of the needle valve (7).
     (e) Move the cap (8) to pull the needle valve (7) down and drain 0.2 l (0.0528 USgal) into the applicable container.
     (f) Remove the cap (8) from the needle valve (7).
     (g) Discard the hydraulic fluid (refer to the local regulations).
     (h) Depressurize the hydraulic system:
       1 For the Green Hydraulic System (Ref. AMM TASK 29-10-00-864-001).
       2 For the Yellow Hydraulic System (Ref. AMM TASK 29-10-00-864-002).
       3 For the Blue Hydraulic System (Ref. AMM TASK 29-10-00-864-003).
   (2) Connection of the LPA20PSTA30 PARTICLE COUNTER LPA2 (1):
WARNING: DO NOT PULL THE ADAPTER DOWN. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.
CAUTION: WHEN THE ADAPTER IS ENGAGED, MAKE SURE THAT IT STAYS FULLY VERTICAL. IF IT DOES NOT STAY VERTICAL, THE LASER PARTICLE ANALYSER 2 WILL NOT OPERATE CORRECTLY.
     (a) Make sure that the last calibration of the LPA2 (1) occurred in the last 12 months.
     (b) Remove the cap (12) from the adapter SKAA01 SAMPLING VALVE ADAPTER KIT (9).
     (c) Connect the adapter SKAA01 SAMPLING VALVE ADAPTER KIT (9) to the sampling valve (10):
       1 Engage the adapter SKAA01 SAMPLING VALVE ADAPTER KIT (9) on the sampling valve (10).
       2 Lift the adapter SKAA01 SAMPLING VALVE ADAPTER KIT (9) and turn the bottom part of the adapter SKAA01 SAMPLING VALVE ADAPTER KIT (9) counterclockwise.
WARNING: TO DRAIN THE HYDRAULIC FLUID, CONNECT THE WASTE FLUID HOSE TO THE WASTE BOTTLE ONLY. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.
     (d) Put the waste fluid hose (3) into the waste bottle (4) to collect the fluid.
     (e) Push the quick-coupling outer ring back and connect the waste fluid hose (3) to the LPA2 waste connector (2).
     (f) Connect the fluid sampling hose (6) to the LPA2 HP connector (5).
     (g) Connect the fluid sampling hose (6) to the adapter SKAA01 SAMPLING VALVE ADAPTER KIT (9). Tighten the connector with your hand.
     (h) Put the notch of the cap (8) below the needle valve (7) of the adapter SKAA01 SAMPLING VALVE ADAPTER KIT (9).
   (3) Do an on-aircraft particle-contamination analysis:
WARNING: MAKE SURE THAT:
  • THE TWO M16X2 CONNECTORS ARE FULLY ENGAGED WITH THEIR APPLICABLE MATING COMPONENTS
  • THE PRESSURE IN THE SYSTEM THAT YOU MONITOR IS NOT MORE THAN 350 BAR AND NOT LESS THAN 2 BAR.
IF YOU DO NOT OBEY THESE INSTRUCTIONS, INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.
WARNING: DO NOT TRY TO DISCONNECT THE SAMPLING VALVE ADAPTER OR THE LASER PARTICLE ANALYSER 2 WHILE THEY ARE PRESSURIZED. IF YOU DO NOT OBEY THIS INSTRUCTION, HYDRAULIC FLUID CAN CAUSE INJURY AND/OR DAMAGE.
     (a) Pressurize the applicable hydraulic system:
     (b) Move the cap (8) and pull the needle valve (7) down to open the sampling valve (10).
     (c) On the LPA2 (1), make sure that the correct standard (NSA307110/NAS1638) is selected.
NOTE: The LPA2 (1) is now synchronized with the pressure of the hydraulic system. This is shown on the right side of the LPA2 display.
     (d) On the LPA2 (1), select the DYNAMIC TEST type.
     (e) Push the ON pushbutton to start the analyser. The main/test progress screen comes into view.
     (f) Push the Start pushbutton "1". The analyser starts the sampling cycle, with a 30-second flush.
NOTE: The progress bar shows the status of the sampling.
NOTE: The test result comes into view when the sampling and emptying cycle is completed.
     (g) Print the result, as applicable.
     (h) Compare the result with the permitted particle contamination limits given in Para.4.B.:
       1 If the measured value with the LPA2 (1) is a class 9 result or higher, do a second sampling with the LPA2 (1):
         a If the measured value is a class 9 result or higher and is confirmed:
  • Contact Airbus and do the applicable reclaim procedure.
  • Send a fluid sample for laboratory analysis.
       2 If there is a contamination of more than class 9 in one system, apply the applicable contamination procedure and go back to the primary base for maintenance.
   (4) Depressurize the applicable hydraulic systems:
   (5) Disconnection of the LPA2 (1):
     (a) On the LPA2 tool (1), push the Flush Valve pushbutton. The pushbutton light comes on.
     (b) Make sure that the pressure value shown on the LPA2 (1) is 0 bar (0.00 psi).
     (c) Installation of the adapter cap (12):
       1 Install the adapter cap (12) on the needle valve (7) of the adapter SKAA01 SAMPLING VALVE ADAPTER KIT (9).
WARNING: CONTINUE TO TURN THE ADAPTER CAP UNTIL THE PRESSURE INDICATION ON THE DISPLAY OF THE LASER PARTICLE ANALYSER 2 IS 0 BAR. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.
       2 Turn the adapter cap (12) clockwise.
     (d) Disconnect the fluid sampling hose (6) from the adapter SKAA01 SAMPLING VALVE ADAPTER KIT (9).
     (e) Disconnect the fluid sampling hose (6) from the LPA2 HP connector (5).
     (f) Push the quick-coupling outer ring back and disconnect the waste fluid hose (3) from the LPA2 waste connector (2).
     (g) Push the Flush Valve pushbutton and stop the LPA2 (1).
     (h) Disconnect the adapter SKAA01 SAMPLING VALVE ADAPTER KIT (9) from the sampling valve (10).
   (6) Discard the hydraulic fluid from the waste bottle (4) (refer to the local regulations) and clean the waste bottle (4).
   (7) Install the cap (8) on the sampling valve (10).
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
   (8) Safety the cap (8) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy - (Ref. AMM TASK 20-11-11-911-001).
Subtask 12-32-29-281-061-A
B. Contamination Analysis by LPA2
   (1) The number of particles contained in 100 cm3 (6.10 in.3) must not be more than:
  • The class 8 requirements of NSA 307110 specifications for an on-aircraft particle-contamination analysis with the LPA2.
   (2) In case of class 9 or higher with the LPA2, a second sampling by using the tool shall be performed.
   (3) If the contamination is confirmed complete reclaim procedure (Ref. AMM TASK 12-36-29-600-001), (Ref. AMM TASK 12-36-29-600-002), (Ref. AMM TASK 12-36-29-600-003).
   (4) Do another sampling with the LPA2:
  • If the result is not more than class 8, the A/C can be released.
  • If the result is more than class 8, do a second sampling by using the tool.
If contamination is confirmed take a sample for laboratory investigation as tool accuracy can be suspected. Wait for the result before A/C release into service.
5. Close-up
Subtask 12-32-29-611-052-A
A. Make sure that the fluid level in the hydraulic reservoirs is correct. If necessary, fill the reservoirs (Ref. AMM TASK 12-12-29-611-001).
Subtask 12-32-29-410-052-A
B. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the applicable access panel/door:
  • For the Green hydraulic system, close the left MLG door (Ref. AMM TASK 32-12-00-410-001).
  • For the Yellow hydraulic system, close access door 196BB.
  • For the Blue hydraulic system, close access door 195BB.
Subtask 12-32-29-862-050-A
C. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)
[Rev.10 from 2021] 2026.04.02 06:46:29 UTC
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