W DOC AIRBUS | AMM A320F

Hydraulic Replenishment of the MLG Two-Stage Shock Absorber

TASK 12-12-32-611-008-A
Hydraulic Replenishment of the MLG Two-Stage Shock Absorber

WARNING: MAKE SURE THAT THE SAFETY DEVICES AND THE WARNING NOTICES ARE IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 3M (10 FT)
No specific
AR
JACK - AXLE
No specific
1
WARNING NOTICE(S)
No specific
Torque wrench: range to between 0.79 and 0.57 m.daN (69.91 and 50.44 lbf.in ) T
No specific
Torque wrench: range to between 1.25 and 1.00 m.daN (110.62 and 88.50 lbf.in ) T
No specific
Torque wrench: range to between 1.58 and 1.13 m.daN (139.82 and 100.00 lbf.in ) T
98F32001006000
2
GEAR FILLING KIT S-ABSOR
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.02BBB9)
Mineral Hydraulic Fluid-Damper - -
(Material No.02CBB1)
Mineral Hydraulic Fluid & Additives-Damper Shock Struts -
(Material No.02CCC1)
Mineral Hydraulic Fluid & Additives-Damper Landing Gear -
(Material No.14QFB1)
Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
 C. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
5
PACKING
AIPC 32-11-13-01-015
 D. Referenced Information
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 12-14-32-200-001-A
Inspection of the MLG Shock Absorbers before Flight
TASK 12-14-32-614-003-A
Functional Check of MLG Shock Absorber Charge Pressure
TASK 32-00-00-481-001-A
Installation of the Safety Devices on the Landing Gears
F MLG Two-Stage Shock Absorber - Replenishment Location and Detail ** ON A/C NOT FOR ALL
F MLG Two Stage Shock Absorber - Filling System
F MLG Two-Stage Shock Absorber - Replenishment Location and Detail ** ON A/C NOT FOR ALL
F MLG Two-Stage Shock Absorber - Replenishment Location and Detail ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 12-12-32-941-068-A
A. Safety Precautions
   (1) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
   (2) On panel 400VU:
  • make sure that the landing-gear control-lever 6GA is in the DOWN position
  • put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.
   (3) Put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear doors.
Subtask 12-12-32-582-055-A
B. Lift the Aircraft
   (1) Lift the aircraft on jacks (Ref. AMM TASK 07-11-00-581-001).
   (2) Put the ACCESS PLATFORM 3M (10 FT) in position at the applicable shock absorber.
4. Procedure
Subtask 12-12-32-611-059-A ** ON A/C NOT FOR ALL
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.
A. Hydraulic Replenishment of the MLG Two-Stage Shock Absorber

NOTE: As an alternative procedure to fill the MLG, you can use the vacuum procedure in Para. 4.B. The vacuum procedure will let the MLG be filled without extension and compression of the MLG again and again.
   (1) Remove the blanking cap (2) from the bottom charging valve (1).
   (2) Remove the blanking cap (3) from the top charging valve (4).
   (3) Release the nitrogen pressure as follows:
     (a) Slowly open the bottom charging valve (1).
     (b) Slowly open the top charging valve (4).
   (4) Remove and discard the lockwire from the body of the top charging valve (4).
   (5) Remove the top charging valve (4).
NOTE: It is possible that some oil can come out of the top charging valve (4).
   (6) Remove and discard the packing (5) from the top charging valve (4).
   (7) Install the 98F32001006000 GEAR FILLING KIT S-ABSOR on the two-stage shock absorber as follows:
     (a) Install the filler adaptor (16) in the port of the top charging valve (4).
     (b) TORQUE the filler adaptor (16) to between 1.58 and 1.13 m.daN (139.82 and 100.00 lbf.in ) T.
     (c) Connect the elbow-fitting (17) to the filler adaptor (16).
     (d) Connect the filling hose (15) to the elbow fitting (17).
     (e) Connect the three-way valve (18) to the filling hose (15).
     (f) Connect the hydraulic pump (23) and the hydraulic fluid reservoir (22) to the three-way valve (18) with the supply hose (24).
WARNING: DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.
     (g) Fill the hydraulic fluid reservoir with Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) or Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) or Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) .
NOTE: Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) , Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) and Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) can be mixed in all applicable maintenance tasks and in quantities.
     (h) Connect the bleed hose (20) between the three-way valve (18) and the drain container (21).
     (i) Open the control valves (19) and (25).
     (j) Bleed the filling system with the hydraulic pump (23).
   (8) Put the JACK - AXLE in position below the jacking dome (6) of the applicable landing gear. Make sure that the JACK - AXLE is free to move forward and aft.
NOTE: The extension of JACK - AXLE is necessary to fully compress the shock absorber is between 494 mm (19.4 in.) and 504 mm (19.8 in.).
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 22 BAR (319 PSI). IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SHOCK ABSORBER.
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 14 BAR (203 PSI) IF THE CHARGING EQUIPMENT HAS A SIGHT GLASS. IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SIGHT GLASS.
   (9) Fill the shock absorber with hydraulic fluid as follows:

NOTE: 20 l (5 USgal) of hydraulic fluid is necessary to fill each shock absorber. It is possible that more than 20 l (5 USgal) of hydraulic fluid will be necessary for the hydraulic replenishment of each shock absorber.
     (a) Make sure that:
  • The bottom charging valve (1) is open.
  • The control valve (19) is open.
  • The control valve (25) is closed.
     (b) Use the JACK - AXLE to fully compress the shock absorber. At the same time, monitor the hydraulic fluid that goes into the drain container (21).
NOTE: It is possible that no hydraulic fluid will bleed into the drain container (21) when you initially compress the shock absorber.
     (c) Close the control valve (19) and open the control valve (25).
     (d) Use the hydraulic pump (23) to slowly increase the pressure of the hydraulic supply to 13.8 bar (200 psi). Let the pressure become stable.
     (e) Keep the pressure of the hydraulic supply at 13.8 bar (200 psi). At the same time, slowly lower the JACK - AXLE to let the shock absorber fully extend.
     (f) When the shock absorber is fully extended, let the pressure become stable at 13.8 bar (200 psi).
     (g) Release the hydraulic supply pressure.
     (h) Close the control valve (25) and open the control valve (19).
   (10) Do step (9) again until the hydraulic fluid from the bleed hose (20) contains no air (there are no bubbles in the fluid).
   (11) Use the JACK - AXLE to fully compress the shock absorber.
   (12) Keep the shock absorber compressed and the hydraulic pressure released.
   (13) Disconnect the hydraulic supply hose (24) from the three-way valve (18).
   (14) Loosen the elbow fitting (17) at the filler adaptor (16) and let the hydraulic fluid drain into the drain container (21).
   (15) Remove the elbow fitting (17) from the filler adaptor (16).
   (16) Close the control valve (19) and remove the bleed hose (20) and the drain container (21).
   (17) Remove the filler adaptor (16).
   (18) Remove the 98F32001006000 GEAR FILLING KIT S-ABSOR.
   (19) Install a new AIPC 32-11-13-01-015 PACKING (5) to the top charging valve (4).
   (20) Install the top charging valve (4).
   (21) TORQUE the body of the top charging valve (4) to between 1.58 and 1.13 m.daN (139.82 and 100.00 lbf.in ) T.
   (22) Safety the body of the top charging valve (4) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (23) Make sure that the bottom charging valve (1) and the top charging valve (4) are closed.
   (24) Install the blanking cap (2) on the bottom charging valve (1).
   (25) Install the blanking cap (3) on the top charging valve (4).
   (26) Lower and remove the JACK - AXLE.
   (27) Do the nitrogen filling of the MLG two-stage shock absorber (aircraft on jacks) (Ref. AMM TASK 12-14-32-614-003).
   (28) Record in the aircraft log that:
  • It is recommended that you do a weight on wheels pressure 'H' dimension check (Ref. AMM TASK 12-14-32-200-001), in not less than 24 hours after you lower the aircraft off the jacks.
NOTE:
  • New hydraulic fluid can absorb nitrogen.
  • Shock-absorber nitrogen pressure can decrease.
Subtask 12-12-32-611-069-A ** ON A/C NOT FOR ALL
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.
B. Hydraulic Replenishment of the MLG Two-Stage Shock Absorber with the Vacuum Procedure
NOTE: This procedure will let the MLG be filled without extension and compression of the MLG again and again.
   (1) Remove the blanking cap (2) from the bottom charging valve (1).
   (2) Remove the blanking cap (3) from the top charging valve (4).
   (3) Release the nitrogen pressure as follows:
     (a) Slowly open the bottom charging valve (1).
     (b) Slowly open the top charging valve (4).
   (4) Remove the gas from the oil as follows:
     (a) Put the JACK - AXLE in position below the jacking dome (6) of the applicable landing gear. Make sure that the JACK - AXLE is free to move forward and aft.
NOTE: The extension of JACK - AXLE is necessary to fully compress the shock absorber is between 494 mm (19.4 in.) and 504 mm (19.8 in.).
     (b) Release all the nitrogen from the bottom charging valve (1).
     (c) Close the bottom charging valve (1).
     (d) Make sure that:
  • The top charging valve (4) is open
  • The bottom charging valve (1) is closed.
     (e) Use the JACK - AXLE to fully compress the shock absorber.
     (f) Close the top charging valve (4).
     (g) Slowly lower the JACK - AXLE to fully extend the shock absorber.
     (h) When the shock absorber is fully extended, do not continue the procedure for a minimum of 30 minutes (to let the shock absorber become stable).
NOTE: There is a vacuum in the shock absorber chamber 1 for 30 minutes.
     (i) Slowly open the top charging valve (4) to release the nitrogen.
   (5) Remove and discard the lockwire from the body of the top charging valve (4).
   (6) Remove the top charging valve (4).
NOTE: It is possible that some oil can come out of the top charging valve (4).
   (7) Remove and discard the packing (5) from the top charging valve (4).
   (8) Install the 98F32001006000 GEAR FILLING KIT S-ABSOR on the two-stage shock absorber as follows:
     (a) Install the filler adaptor (16) in the port of the top charging valve (4).
     (b) TORQUE the filler adaptor (16) to between 1.58 and 1.13 m.daN (139.82 and 100.00 lbf.in ) T.
     (c) Connect the elbow fitting (17) to the filler adaptor (16).
     (d) Connect the filling hose (15) to the elbow fitting (17).
     (e) Connect the three-way valve (18) to the filling hose (15).
     (f) Connect the hydraulic pump (23) and the hydraulic fluid reservoir (22) to the three-way valve (18) with the supply hose (24).
WARNING: DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.
     (g) Fill the hydraulic fluid reservoir with Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) or Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) or Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) .
NOTE: Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) , Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) and Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) can be mixed in all applicable maintenance tasks and in all quantities.
     (h) Connect the bleed hose (20) between the three-way valve (18) and the drain container (21).
     (i) Open the control valves (19) and (25).
     (j) Bleed the filling system with the hydraulic pump (23).
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 22 BAR (319 PSI). IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SHOCK ABSORBER.
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 14 BAR (203 PSI) IF THE CHARGING EQUIPMENT HAS A SIGHT GLASS. IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SIGHT GLASS.
   (9) Fill the shock absorber with hydraulic fluid as follows:

NOTE: 20 l (5 USgal) of hydraulic fluid is necessary to fill each shock absorber. It is possible that more than 20 l (5 USgal) of hydraulic fluid will be necessary for the hydraulic replenishment of each shock absorber.
     (a) Make sure that:
  • The bottom charging valve (1) is open.
  • The control valve (19) is open.
  • The control valve (25) is closed.
     (b) Use the JACK - AXLE to fully compress the shock absorber. At the same time, monitor the hydraulic fluid that goes into the drain container (21).
NOTE: It is possible that no hydraulic fluid will bleed into the drain container (21) when you initially compress the shock absorber.
     (c) Close the control valve (19) and open the control valve (25).
     (d) Use the hydraulic pump (23) to slowly increase the pressure of the hydraulic supply to 13.8 bar (200 psi). Let the pressure become stable.
     (e) Keep the pressure of the hydraulic supply at 13.8 bar (200 psi). At the same time, slowly lower the JACK - AXLE to let the shock absorber fully extend.
     (f) When the shock absorber is fully extended, let the pressure becomes stable at 13.8 bar (200 psi). When the pressure becomes stable, do not continue the procedure for a minimum of 5 minutes.
     (g) Release the hydraulic supply pressure.
     (h) Close the control valve (25) and open the control valve (19).
   (10) Use the JACK - AXLE to slowly and fully compress the shock absorber.
NOTE: Oil that comes out must not contain bubbles.
   (11) Keep the shock absorber compressed and the hydraulic pressure release.
   (12) Disconnect the hydraulic supply hose (24) from the three-way valve (18).
   (13) Loosen the elbow-fitting (17) at the filler adaptor (16) and let the hydraulic fluid drain into the drain container (21).
   (14) Remove the elbow-fitting (17) from the filler adaptor (16).
   (15) Close the control valve (19) and remove the bleed hose (20) and the drain container (21).
   (16) Remove the filler adaptor (16).
   (17) Remove the 98F32001006000 GEAR FILLING KIT S-ABSOR.
   (18) Install a new AIPC 32-11-13-01-015 PACKING (5) to the top charging valve (4).
   (19) Install the top charging valve (4).
   (20) TORQUE the body of the top charging valve (4) to between 1.58 and 1.13 m.daN (139.82 and 100.00 lbf.in ) T.
   (21) Safety the body of the top charging valve (4) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (22) Make sure that the bottom charging valve (1) and the top charging valve (4) are closed.
   (23) Install the blanking cap (2) on the bottom charging valve (1).
   (24) Install the blanking cap (3) on the top charging valve (4).
   (25) Slowly lower and remove the JACK - AXLE.
   (26) Do the nitrogen filling of the MLG two-stage shock absorber (aircraft on jacks) (Ref. AMM TASK 12-14-32-614-003).
   (27) Record in the aircraft log that:
  • It is recommended that you do a weight on wheels pressure 'H' dimension check (Ref. AMM TASK 12-14-32-200-001), in not less than 24 hours after you lower the aircraft off the jacks.
NOTE:
  • New hydraulic fluid can absorb nitrogen.
  • Shock-absorber nitrogen pressure can decrease.
Subtask 12-12-32-611-059-C ** ON A/C NOT FOR ALL
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.
C. Hydraulic Replenishment of the MLG Two-Stage Shock Absorber

NOTE: As an alternative procedure to fill the MLG, you can use the vacuum procedure in Para. 4.B. The vacuum procedure will let the MLG be filled without extension and compression of the MLG again and again.
   (1) Remove the blanking cap (2) from the bottom charging valve (1).
   (2) Remove the blanking cap (3) from the top charging valve (4).
   (3) Release the nitrogen pressure as follows:
     (a) Slowly open the bottom charging valve (1).
     (b) Slowly open the top charging valve (4).
   (4) Remove and discard the lockwire from the body of the top charging valve (4).
   (5) Remove the top charging valve (4).
NOTE: It is possible that some oil can come out of the top charging valve (4).
   (6) Install the 98F32001006000 GEAR FILLING KIT S-ABSOR on the two-stage shock absorber as follows:
     (a) Install the filler adaptor (16) in the port of the top charging valve (4).
     (b) TORQUE the filler adaptor (16) to between 1.58 and 1.13 m.daN (139.82 and 100.00 lbf.in ) T.
     (c) Connect the elbow-fitting (17) to the filler adaptor (16).
     (d) Connect the filling hose (15) to the elbow fitting (17).
     (e) Connect the three-way valve (18) to the filling hose (15).
     (f) Connect the hydraulic pump (23) and the hydraulic fluid reservoir (22) to the three-way valve (18) with the supply hose (24).
WARNING: DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.
     (g) Fill the hydraulic fluid reservoir with Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) or Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) or Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) .
NOTE: Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) , Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) and Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) can be mixed in all the applicable maintenance tasks all quantities.
     (h) Connect the bleed hose (20) between the three-way valve (18) and the drain container (21).
     (i) Open the control valves (19) and (25).
     (j) Bleed the filling system with the hydraulic pump (23).
   (7) Put the JACK - AXLE in position below the jacking dome (5) of the applicable landing gear. Make sure that the JACK - AXLE is free to move forward and aft.
NOTE: The extension of JACK - AXLE is necessary to fully compress the shock absorber is between 494 mm (19.4 in.) and 504 mm (19.8 in.).
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 22 BAR (319 PSI). IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SHOCK ABSORBER.
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 14 BAR (203 PSI) IF THE CHARGING EQUIPMENT HAS A SIGHT GLASS. IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SIGHT GLASS.
   (8) Fill the shock absorber with hydraulic fluid as follows:

NOTE: 20 l (5 USgal) of hydraulic fluid is necessary to fill each shock absorber. It is possible that more than 20 l (5 USgal) of hydraulic fluid will be necessary for the hydraulic replenishment of each shock absorber.
     (a) Make sure that:
  • The bottom charging valve (1) is open.
  • The control valve (19) is open.
  • The control valve (25) is closed.
     (b) Use the JACK - AXLE to fully compress the shock absorber. At the same time, monitor the hydraulic fluid that goes into the drain container (21).
NOTE: It is possible that no hydraulic fluid will bleed into the drain container (21) when you initially compress the shock absorber.
     (c) Close the control valve (19) and open the control valve (25).
     (d) Use the hydraulic pump (23) to slowly increase the pressure of the hydraulic supply to 13.8 bar (200 psi). Let the pressure become stable.
     (e) Keep the pressure of the hydraulic supply at 13.8 bar (200 psi). At the same time, slowly lower the JACK - AXLE to let the shock absorber fully extend.
     (f) When the shock absorber is fully extended, let the pressure become stable at 13.8 bar (200 psi).
     (g) Release the hydraulic supply pressure.
     (h) Close the control valve (25) and open the control valve (19).
   (9) Do step (8) again until the hydraulic fluid from the bleed hose (20) contains no air (there are no bubbles in the hydraulic fluid).
   (10) Use the JACK - AXLE to fully compress the shock absorber.
   (11) Keep the shock absorber compressed and the hydraulic pressure released.
   (12) Disconnect the hydraulic supply hose (24) from the three-way valve (18).
   (13) Loosen the elbow fitting (17) at the filler adaptor (16) and let the hydraulic fluid drain into the drain container (21).
   (14) Remove the elbow fitting (17) from the filler adaptor (16).
   (15) Close the control valve (19) and remove the bleed hose (20) and the drain container (21).
   (16) Remove the filler adaptor (16).
   (17) Remove the 98F32001006000 GEAR FILLING KIT S-ABSOR.
   (18) Install the top charging valve (4).
   (19) TORQUE the top charging valve (4) to between 0.79 and 0.57 m.daN (69.91 and 50.44 lbf.in ) T.
   (20) Safety the body of the top charging valve (4) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (21) Make sure that the bottom charging valve (1) and the top charging valve (4) are closed.
   (22) Install the blanking cap (2) on the bottom charging valve (1).
   (23) Install the blanking cap (3) on the top charging valve (4).
   (24) Lower and remove the JACK - AXLE.
   (25) Do the nitrogen filling of the MLG two-stage shock absorber (aircraft on jacks) (Ref. AMM TASK 12-14-32-614-003).
   (26) Record in the aircraft log that:
  • It is recommended to do a weight on wheels pressure 'H' dimension check (Ref. AMM TASK 12-14-32-200-001), in not less than 24 hours after you lower the aircraft off the jacks.
NOTE:
  • New hydraulic fluid can absorb nitrogen.
  • Shock-absorber nitrogen pressure can decrease.
Subtask 12-12-32-611-069-B ** ON A/C NOT FOR ALL
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.
D. Hydraulic Replenishment of the MLG Two-Stage Shock Absorber with the Vacuum Procedure
NOTE: This procedure will let the MLG be filled without extension and compression of the MLG again and again.
   (1) Remove the blanking cap (2) from the bottom charging valve (1).
   (2) Remove the blanking cap (3) from the top charging valve (4).
   (3) Release the nitrogen pressure as follows:
     (a) Slowly open the bottom charging valve (1).
     (b) Slowly open the top charging valve (4).
   (4) Remove the gas from the oil as follows:
     (a) Put the JACK - AXLE in position below the jacking dome (5) of the applicable landing gear. Make sure that the JACK - AXLE is free to move forward and aft.
NOTE: The extension of JACK - AXLE is necessary to fully compress the shock absorber is between 494 mm (19.4 in.) and 504 mm (19.8 in.).
     (b) Release all the nitrogen from the bottom charging valve (1).
     (c) Close the bottom charging valve (1).
     (d) Make sure that:
  • The top charging valve (4) is open
  • The bottom charging valve (1) is closed.
     (e) Use the JACK - AXLE to fully compress the shock absorber.
     (f) Close the top charging valve (4).
     (g) Slowly lower the JACK - AXLE to fully extend the shock absorber.
     (h) When the shock absorber is fully extended, do not continue the procedure for a minimum of 30 minutes (to let the shock absorber become stable).
NOTE: There is a vacuum in the shock absorber chamber 1 for 30 minutes.
     (i) Slowly open the top charging valve assembly to release the nitrogen.
   (5) Remove and discard the lockwire from the body of the top charging valve (4).
   (6) Remove the top charging valve (4).
NOTE: It is possible that some oil can come out of the top charging valve (4).
   (7) Install the 98F32001006000 GEAR FILLING KIT S-ABSOR on the two-stage shock absorber as follows:
     (a) Install the filler adaptor (16) in the port of the top charging valve (4).
     (b) TORQUE the filler adaptor (16) to between 1.58 and 1.13 m.daN (139.82 and 100.00 lbf.in ) T.
     (c) Connect the elbow fitting (17) to the filler adaptor (16).
     (d) Connect the filling hose (15) to the elbow fitting (17).
     (e) Connect the three-way valve (18) to the filling hose (15).
     (f) Connect the hydraulic pump (23) and the hydraulic fluid reservoir (22) to the three-way valve (18) with the supply hose (24).
WARNING: DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.
     (g) Fill the hydraulic fluid reservoir with Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) or Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) or Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) .
NOTE: Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) , Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) and Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) can be mixed in all the applicable maintenance tasks and in all quantities.
     (h) Connect the bleed hose (20) between the three-way valve (18) and the drain container (21).
     (i) Open the control valves (19) and (25).
     (j) Bleed the filling system with the hydraulic pump (23).
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 22 BAR (319 PSI). IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SHOCK ABSORBER.
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 14 BAR (203 PSI) IF THE CHARGING EQUIPMENT HAS A SIGHT GLASS. IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SIGHT GLASS.
   (8) Fill the shock absorber with hydraulic fluid as follows:

NOTE: 20 l (5 USgal) of hydraulic fluid is necessary to fill each shock absorber. It is possible that more than 20 l (5 USgal) of hydraulic fluid will be necessary for the hydraulic replenishment of each shock absorber.

     (a) Make sure that:
  • The bottom charging valve (1) is open.
  • The control valve (19) is open.
  • The control valve (25) is closed.
     (b) Use the JACK - AXLE to fully compress the shock absorber. At the same time, monitor the hydraulic fluid that goes into the drain container (21).
NOTE: It is possible that no hydraulic fluid will bleed into the drain container (21) when you initially compress the shock absorber.
     (c) Close the control valve (19) and open the control valve (25).
     (d) Use the hydraulic pump (23) to slowly increase the pressure of the hydraulic supply to 13.8 bar (200 psi). Let the pressure become stable.
     (e) Keep the pressure of the hydraulic supply at 13.8 bar (200 psi). At the same time, slowly lower the JACK - AXLE to let the shock absorber fully extend.
     (f) When the shock absorber is fully extended, let the pressure become stable at 13.8 bar (200 psi). When the pressure becomes stable, do not continue the procedure for a minimum of 5 minutes.
     (g) Release the hydraulic supply pressure.
     (h) Close the control valve (25) and open the control valve (19).
   (9) Use the JACK - AXLE to slowly and fully compress the shock absorber.
NOTE: Oil that comes out must not contain bubbles.
   (10) Keep the shock absorber compressed and the hydraulic pressure released.
   (11) Disconnect the hydraulic supply hose (24) from the three-way valve (18).
   (12) Loosen the elbow-fitting (17) at the filler adaptor (16) and let the hydraulic fluid drain into the drain container (21).
   (13) Remove the elbow-fitting (17) from the filler adaptor (16).
   (14) Close the control valve (19) and remove the bleed hose (20) and the drain container (21).
   (15) Remove the filler adaptor (16).
   (16) Remove the 98F32001006000 GEAR FILLING KIT S-ABSOR.
   (17) Install the top charging valve (4).
   (18) TORQUE the top charging valve (4) to between 0.79 and 0.57 m.daN (69.91 and 50.44 lbf.in ) T.
   (19) Safety the body of the top charging valve (4) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (20) Make sure that the bottom charging valve (1) and the top charging valve (4) are closed.
   (21) Install the blanking cap (2) on the bottom charging valve (1).
   (22) Install the blanking cap (3) on the top charging valve (4).
   (23) Slowly lower and remove the JACK - AXLE.
   (24) Do the nitrogen filling of the MLG two-stage shock absorber (aircraft on jacks) (Ref. AMM TASK 12-14-32-614-003).
   (25) Record in the aircraft log that:
  • It is recommended to do a weight on wheels pressure 'H' dimension check (Ref. AMM TASK 12-14-32-200-001), in not less than 24 hours after you lower the aircraft off the jacks.
NOTE:
  • New hydraulic fluid can absorb nitrogen.
  • Shock-absorber nitrogen pressure can decrease.
Subtask 12-12-32-611-059-E ** ON A/C NOT FOR ALL
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.
E. Hydraulic Replenishment of the MLG Two-Stage Shock Absorber

NOTE: As an alternative procedure to fill the MLG, you can use the vacuum procedure in Para. 4.B. The vacuum procedure will let the MLG be filled without extension and compression of the MLG again and again.
   (1) Remove the blanking cap (2) from the bottom charging valve (1).
   (2) Remove the blanking cap (3) from the top charging valve (4).
   (3) Slowly open the bottom charging valve (1) and the top charging valve (4) to release the nitrogen pressure.
   (4) Remove and discard the lockwire from the body of the top charging valve (4).
   (5) Remove the top charging valve (4).
NOTE: It is possible that some oil can come out of the top charging valve (4).
   (6) Install the 98F32001006000 GEAR FILLING KIT S-ABSOR on the two-stage shock absorber as follows:
     (a) Install the filler adaptor (16) in the port of the top charging valve (4).
     (b) TORQUE the filler adaptor (16) to between 1.58 and 1.13 m.daN (139.82 and 100.00 lbf.in ) T.
     (c) Connect the elbow-fitting (17) to the filler adaptor (16).
     (d) Connect the filling hose (15) to the elbow fitting (17).
     (e) Connect the three-way valve (18) to the filling hose (15).
     (f) Connect the hydraulic pump (23) and the hydraulic fluid reservoir (22) to the three-way valve (18) with the supply hose (24).
WARNING: DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.
     (g) Fill the hydraulic fluid reservoir with Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) or Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) or Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) .
NOTE: Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) , Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) and Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) can be mixed in all the applicable maintenance tasks all quantities.
     (h) Connect the bleed hose (20) between the three-way valve (18) and the drain container (21).
     (i) Open the control valves (19) and (25).
     (j) Bleed the filling system with the hydraulic pump (23).
   (7) Put the JACK - AXLE in position below the jacking dome (5) of the applicable landing gear. Make sure that the JACK - AXLE is free to move forward and aft.
NOTE: The extension of JACK - AXLE is necessary to fully compress the shock absorber is between 494 mm (19.4 in.) and 504 mm (19.8 in.).
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 22 BAR (319 PSI). IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SHOCK ABSORBER.
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 14 BAR (203 PSI) IF THE CHARGING EQUIPMENT HAS A SIGHT GLASS. IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SIGHT GLASS.
   (8) Fill the shock absorber with hydraulic fluid as follows:

NOTE: 20 l (5 USgal) of hydraulic fluid is necessary to fill each shock absorber. It is possible that more than 20 l (5 USgal) of hydraulic fluid will be necessary for the hydraulic replenishment of each shock absorber.
     (a) Make sure that:
  • The bottom charging valve (1) is open.
  • The control valve (19) is open.
  • The control valve (25) is closed.
     (b) Use the JACK - AXLE to fully compress the shock absorber. At the same time, monitor the hydraulic fluid that goes into the drain container (21).
NOTE: It is possible that no hydraulic fluid will bleed into the drain container (21) when you initially compress the shock absorber.
     (c) Close the control valve (19) and open the control valve (25).
     (d) Use the hydraulic pump (23) to slowly increase the pressure of the hydraulic supply to 13.8 bar (200 psi). Let the pressure become stable.
     (e) Keep the pressure of the hydraulic supply at 13.8 bar (200 psi). At the same time, slowly lower the JACK - AXLE to let the shock absorber fully extend.
     (f) When the shock absorber is fully extended, let the pressure become stable at 13.8 bar (200 psi).
     (g) Release the hydraulic supply pressure.
     (h) Close the control valve (25) and open the control valve (19).
   (9) Do step (8) again until the hydraulic fluid from the bleed hose (20) contains no air (there are no bubbles in the hydraulic fluid).
   (10) Use the JACK - AXLE to fully compress the shock absorber.
   (11) Keep the shock absorber compressed to release the hydraulic pressure.
   (12) Disconnect the hydraulic supply hose (24) from the three-way valve (18).
   (13) Loosen the elbow fitting (17) at the filler adaptor (16) and let the hydraulic fluid drain into the drain container (21).
   (14) Remove the elbow fitting (17) from the filler adaptor (16).
   (15) Close the control valve (19) and remove the bleed hose (20) and the drain container (21).
   (16) Remove the filler adaptor (16).
   (17) Remove the 98F32001006000 GEAR FILLING KIT S-ABSOR.
   (18) Install the top charging valve (4).
   (19) TORQUE the body of the top charging valve (4) to between 1.25 and 1.00 m.daN (110.62 and 88.50 lbf.in ) T.
   (20) TORQUE the nut of the top charging valve (4) to between 0.79 and 0.57 m.daN (69.91 and 50.44 lbf.in ) T.
   (21) Safety the body of the charging valve (4) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (22) Make sure that the bottom charging valve (1) and the top charging valve (4) are closed.
   (23) Install the blanking cap (2) on the bottom charging valve (1).
   (24) Install the blanking cap (3) on the top charging valve (4).
   (25) Lower and remove the JACK - AXLE.
   (26) Do the nitrogen filling of the MLG two-stage shock absorber (aircraft on jacks) (Ref. AMM TASK 12-14-32-614-003).
   (27) Record in the aircraft log that:
  • It is recommended to do a weight on wheels pressure 'H' dimension check (Ref. AMM TASK 12-14-32-200-001), in not less than 24 hours after you lower the aircraft off the jacks.
NOTE:
  • New hydraulic fluid can absorb nitrogen.
  • Shock-absorber nitrogen pressure can decrease.
Subtask 12-12-32-611-069-C ** ON A/C NOT FOR ALL
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.
F. Hydraulic Replenishment of the MLG Two-Stage Shock Absorber with the Vacuum Procedure
NOTE: This procedure will let the MLG be filled without extension and compression of the MLG again and again.
   (1) Remove the blanking cap (2) from the bottom charging valve (1).
   (2) Remove the blanking cap (3) from the top charging valve (4).
   (3) Slowly open the bottom charging valve (1) and the top charging valve (4) to release the nitrogen pressure.
   (4) Remove the gas from the oil as follows:
     (a) Put the JACK - AXLE in position below the jacking dome (5) of the applicable landing gear. Make sure that the JACK - AXLE is free to move forward and aft.
NOTE: The extension of JACK - AXLE is necessary to fully compress the shock absorber is between 494 mm (19.4 in.) and 504 mm (19.8 in.).
     (b) Release all the nitrogen from the bottom charging valve (1).
     (c) Close the bottom charging valve (1).
     (d) Make sure that:
  • The top charging valve (4) is open
  • The bottom charging valve (1) is closed.
     (e) Use the JACK - AXLE to fully compress the shock absorber.
     (f) Close the top charging valve (4).
     (g) Slowly lower the JACK - AXLE to fully extend the shock absorber.
     (h) When the shock absorber is fully extended, do not continue the procedure for a minimum of 30 minutes (to let the shock absorber become stable).
NOTE: There will be a vacuum in the shock absorber chamber 1 for 30 minutes.
     (i) Slowly open the top charging valve (4) to release the nitrogen.
   (5) Remove and discard the lockwire from the body of the top charging valve (4).
   (6) Remove the top charging valve (4).
NOTE: It is possible that some oil can come out of the top charging valve (4).
   (7) Install the 98F32001006000 GEAR FILLING KIT S-ABSOR on the two-stage shock absorber as follows:
     (a) Install the filler adaptor (16) in the port of the top charging valve (4).
     (b) TORQUE the filler adaptor (16) to between 1.58 and 1.13 m.daN (139.82 and 100.00 lbf.in ) T.
     (c) Connect the elbow fitting (17) to the filler adaptor (16).
     (d) Connect the filling hose (15) to the elbow fitting (17).
     (e) Connect the three-way valve (18) to the filling hose (15).
     (f) Connect the hydraulic pump (23) and the hydraulic fluid reservoir (22) to the three-way valve (18) with the supply hose (24).
WARNING: DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.
     (g) Fill the hydraulic fluid reservoir with Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) or Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) or Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) .
NOTE: Mineral Hydraulic Fluid-Damper - - (Material No.02BBB9) , Mineral Hydraulic Fluid & Additives-Damper Shock Struts - (Material No.02CBB1) and Mineral Hydraulic Fluid & Additives-Damper Landing Gear - (Material No.02CCC1) can be mixed in all the applicable maintenance tasks and in all quantities.
     (h) Connect the bleed hose (20) between the three-way valve (18) and the drain container (21).
     (i) Open the control valves (19) and (25).
     (j) Bleed the filling system with the hydraulic pump (23).
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 22 BAR (319 PSI). IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SHOCK ABSORBER.
CAUTION: DO NOT LET THE HYDRAULIC PRESSURE INCREASE TO MORE THAN 14 BAR (203 PSI) IF THE CHARGING EQUIPMENT HAS A SIGHT GLASS. IF THE PRESSURE IS MORE THAN THIS VALUE, IT CAN CAUSE DAMAGE TO THE SIGHT GLASS.
   (8) Fill the shock absorber with hydraulic fluid as follows:

NOTE: 20 l (5 USgal) of hydraulic fluid is necessary to fill each shock absorber. It is possible that more than 20 l (5 USgal) of hydraulic fluid will be necessary for the hydraulic replenishment of each shock absorber.
     (a) Make sure that:
  • The bottom charging valve (1) is open.
  • The control valve (19) is open.
  • The control valve (25) is closed.
     (b) Use the JACK - AXLE to fully compress the shock absorber. At the same time, monitor the hydraulic fluid that goes into the drain container (21).
NOTE: It is possible that no hydraulic fluid will bleed into the drain container (21) when you initially compress the shock absorber.
     (c) Close the control valve (19) and open the control valve (25).
     (d) Use the hydraulic pump (23) to slowly increase the pressure of the hydraulic supply to 13.8 bar (200 psi). Let the pressure become stable.
     (e) Keep the pressure of the hydraulic supply at 13.8 bar (200 psi). At the same time, slowly lower the JACK - AXLE to let the shock absorber fully extend.
     (f) When the shock absorber is fully extended, let the pressure become stable at 13.8 bar (200 psi). When the pressure becomes stable, do not continue the procedure for a minimum of 5 minutes.
     (g) Release the hydraulic supply pressure.
     (h) Close the control valve (25) and open the control valve (19).
   (9) Use the JACK - AXLE to slowly and fully compress the shock absorber.
NOTE: Oil that comes out must not contain bubbles.
   (10) Keep the shock absorber compressed to release the hydraulic pressure.
   (11) Disconnect the hydraulic supply hose (24) from the three-way valve (18).
   (12) Loosen the elbow-fitting (17) at the filler adaptor (16) and let the hydraulic fluid drain into the drain container (21).
   (13) Remove the elbow-fitting (17) from the filler adaptor (16).
   (14) Close the control valve (19) and remove the bleed hose (20) and the drain container (21).
   (15) Remove the filler adaptor (16).
   (16) Remove the 98F32001006000 GEAR FILLING KIT S-ABSOR.
   (17) Install the top charging valve (4).
   (18) TORQUE the body of the top charging valve (4) to between 1.25 and 1.00 m.daN (110.62 and 88.50 lbf.in ) T.
   (19) TORQUE the nut of the top charging valve (4) to between 0.79 and 0.57 m.daN (69.91 and 50.44 lbf.in ) T.
   (20) Safety the body of the top charging valve (4) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (21) Make sure that the bottom charging valve (1) and the top charging valve (4) are closed.
   (22) Install the blanking cap (2) on the bottom charging valve (1).
   (23) Install the blanking cap (3) on the top charging valve (4).
   (24) Slowly lower and remove the JACK - AXLE.
   (25) Do the nitrogen filling of the MLG two-stage shock absorber (aircraft on jacks) (Ref. AMM TASK 12-14-32-614-003).
   (26) Record in the aircraft log that:
  • It is recommended to do a weight on wheels pressure 'H' dimension check (Ref. AMM TASK 12-14-32-200-001), in not less than 24 hours after you lower the aircraft off the jacks.
NOTE:
  • New hydraulic fluid can absorb nitrogen.
  • Shock-absorber nitrogen pressure can decrease.
5. Close-up
Subtask 12-12-32-586-053-A
A. Lower the Aircraft
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the access platform(s).
   (3) Lower the aircraft onto its wheels (Ref. AMM TASK 07-11-00-586-002).
Subtask 12-12-32-942-067-A
B. Remove the Equipment
   (1) Remove the WARNING NOTICE(S).
   (2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 04:31:45 UTC
"Aviabrain" 2025