W DOC AIRBUS | AMM A320F

Installation of the MLG Side Stay - Post-EV MLG

TASK 32-11-18-400-001-A-01
Installation of the MLG Side Stay - Post-EV MLG

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: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the Job
Two persons are necessary to do this task.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
2
GAGE - FEELER
No specific
AR
SAFETY BARRIER(S)
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 5 and 3 m.N (44.25 and 26.55 lbf.in ) T
No specific
Torque wrench: range to between 9.5 and 8 m.N (84.07 and 70.80 lbf.in ) T
No specific
Torque wrench: range to between 10.6 and 8.2 m.N (93.81 and 72.57 lbf.in ) T
No specific
Torque wrench: range to between 11 and 9 m.N (97.35 and 79.65 lbf.in ) T
No specific
Torque wrench: range to between 11.5 and 9.5 m.N (101.77 and 84.07 lbf.in ) T
No specific
Torque wrench: range to between 30 and 25 m.N (22.12 and 18.44 lbf.ft ) T
No specific
Torque wrench: range to between 42 and 36 m.N (30.97 and 26.55 lbf.ft ) T
No specific
Torque wrench: range to between 170.1 and 153.9 m.N (125.44 and 113.50 lbf.ft ) T
No specific
Torque wrench: range to between 203 and 162 m.N (149.70 and 119.47 lbf.ft ) T
No specific
Torque wrench: range to between 360 and 162 m.N (265.49 and 119.47 lbf.ft ) T
No specific
Torque wrench: range to between 271 and 244 m.N (199.85 and 179.94 lbf.ft ) T
No specific
Torque wrench: range to between 420 and 380 m.N (309.73 and 280.24 lbf.ft ) T
460006440
1
EXTRACTOR
460006442
1
SPANNER - HOLDING
98D32104013001
1
SPLINT ASSEMBLY - SIDE STAY (A)
98D32104013002
1
SPLINT ASSEMBLY - SIDE STAY (B)
98D32104013004
1
SPLINT ASSEMBLY - SIDE STAY
DRT69678
1
LWR CARDAN SKT
DRT69679
1
UPPER CARDAN SOCKET
DRT69680
1
LWR CARDAN SKT
DRT69681
1
UPPER CARDAN SKT
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.03GBB1)
Synthetic Oil base Grease-General Purpose Clay Thickened -
(Material No.06AAB1)
Polysulfide Sealant-General Purpose Fillet -
(Material No.06AAC5)
Polysulfide Sealant-General Purpose Interfay Landing Gear
(Material No.06ABF1)
Polysulfide Sealant-Fuel Tank Quick Curing -
(Material No.06LCG9)
Non Hardening Jointing Putty-Medium Temp. Area - -
(Material No.06LDG2)
Non Hardening Jointing Putty-High Temp. Area - Structure
(Material No.06LDG6)
Non Hardening Jointing Putty-High Temp. Area - Hydraulic
(Material No.08BBB1)
Non Aqueous Cleaner-- Petroleum Based -
(Material No.14QFB1)
Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
32
SEAL
AIPC 32-11-05-02-140
32
SEAL
AIPC 32-11-05-06-145
27
COTTER PIN
AIPC 32-11-18-01-030
29
COTTER PIN
AIPC 32-11-18-01-030
26
NUT
AIPC 32-11-18-01-040
27
COTTER PIN
AIPC 32-11-18-01-080
28
NUT
AIPC 32-11-18-01-090
13
COTTER PIN
AIPC 32-11-18-02-270
12
NUT
AIPC 32-11-18-02-280
32
SEAL
AIPC 32-11-85-01-140
27
COTTER PIN
AIPC 32-11-85-97-030
26
NUT
AIPC 32-11-85-97-040
27
COTTER PIN
AIPC 32-11-85-97-080
29
COTTER PIN
AIPC 32-11-85-97-080
28
NUT
AIPC 32-11-85-97-090
13
COTTER PIN
AIPC 32-11-85-98-300
12
NUT
AIPC 32-11-85-98-310
48
COTTER PIN
AIPC 57-51-85-67-010
47
COTTER PIN
AIPC 57-51-85-67-020
 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 12-22-32-640-001-A
Lubrication of Main Landing Gear and Doors
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 29-10-00-864-001-A
Depressurize the Green Hydraulic System
TASK 29-14-00-614-001-A
Depressurization of the Hydraulic Reservoirs
TASK 29-14-00-614-002-A
Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01
Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 29-23-00-860-001-A
Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 29-23-00-860-002-A
Connection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 32-00-00-481-001-A
Installation of the Safety Devices on the Landing Gears
TASK 32-00-00-860-002-A
Ground Configuration after Flight Configuration with Electrical Power
TASK 32-00-00-860-002-A-01
Ground Configuration after Flight Configuration without Electrical Power
TASK 32-11-00-220-003-A
Detailed Dimensional Check of the MLG Lockstay Assembly
TASK 32-11-19-400-001-A
Installation of the MLG Lock Springs
TASK 32-11-21-400-001-A
Installation of the MLG Lockstay Actuating Cylinder
TASK 32-11-21-400-001-A-02
Installation of the MLG Lockstay Actuating Cylinder
TASK 32-31-00-720-002-A
Functional Test of the Normal Extension and Retraction of the Landing Gear
TASK 32-31-73-200-001-A
Inspection of the MLG Proximity Sensor and Target Clearances
TASK 32-33-00-720-001-A
Functional Check of Free-Fall Extension
CMM 321282
CMM 321283
CMM 321289
CMM 321290
SRM 572613
 (for corrective action)
F MLG Side-Stay - Support Equipment
F Lower and Upper Cardan-Pin Assemblies
F MLG Side Stay
F Over-Wing Panel Access-Hole - Location and Detail
3. Job Set-up
Subtask 32-11-18-941-053-A
A. Safety Precautions
   (1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
   (2) Make sure that the safety devices are installed on the landing gears (Ref. AMM TASK 32-00-00-481-001).
   (3) Make sure that the WARNING NOTICE(S) is in position on the ground service connection to tell persons not to pressurize the:
  • The Green hydraulic system
  • The Yellow hydraulic system.
   (4) On panel 400VU:
  • Make sure that the landing-gear control-lever (6GA) is in the DOWN position
  • Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the landing gears.
Subtask 32-11-18-860-053-A
B. Aircraft Maintenance Configuration
   (1) Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected (Ref. AMM TASK 29-23-00-860-001).
   (2) Make sure that the reservoirs of the Green and Yellow hydraulic systems are depressurized.
(Ref. AMM TASK 29-10-00-864-001).
   (3) Make sure that the applicable hydraulic reservoirs are depressurized (Ref. AMM TASK 29-14-00-614-001).
   (4) Make sure that the aircraft is on jacks (Ref. AMM TASK 07-11-00-581-001).
   (5) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is below the applicable side stay at zone 731(741).
   (6) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position below zone 571(671).
   (7) Make sure that the lockstay is temporarily safetied in position.
Subtask 32-11-18-869-056-A
C. Flight Configuration Precautions
   (1) If you did not open the LGCIU circuit breakers:
Subtask 32-11-18-865-053-A
D. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUL/G/LGCIU/SYS1/NORM1GAC09
** ON A/C NOT FOR ALL
121VULGCIU/BAT SPLY/SYS259GAR33
121VULGCIU/BAT SPLY/SYS158GAR32
** ON A/C ALL
121VUHYDRAULIC/LGCIU/SYS22GAQ35
121VUHYDRAULIC/LGCIU/SYS1/GRND SPLY52GAQ34
** ON A/C NOT FOR ALL
121VULGCIU/BAT SPLY/SYS259GAR32
121VULGCIU/BAT SPLY/SYS158GAR31
4. Procedure
Subtask 32-11-18-560-050-A ** ON A/C NOT FOR ALL
A. Preparation of the Replacement MLG Side Stay Assembly
WARNING: BEFORE YOU INSTALL/REMOVE THE GSE-TOOL, READ THE INSTRUCTIONS IN THE APPLICABLE GSE INSTRUCTION MANUAL. WHILE YOU OPERATE THIS TOOL, CAREFULLY OBEY THEM. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY AND/OR DAMAGE CAN OCCUR.
   (1) Install the 98D32104013001 SPLINT ASSEMBLY - SIDE STAY (A) or the 98D32104013004 SPLINT ASSEMBLY - SIDE STAY on the side stay (6) with:
  • The cables to the side stay splint-assembly
  • The strap to the side stay splint-assembly
  • The center joint of the side stay in the center hole of the side stay splint-assembly.
   (2) Tighten the strap and connect the cables to the hook. Tighten the cables.
Subtask 32-11-18-560-050-B ** ON A/C NOT FOR ALL
A. Preparation of the Replacement MLG Side Stay Assembly
WARNING: BEFORE YOU INSTALL/REMOVE THE GSE-TOOL, READ THE INSTRUCTIONS IN THE APPLICABLE GSE INSTRUCTION MANUAL. WHILE YOU OPERATE THIS TOOL, CAREFULLY OBEY THEM. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY AND/OR DAMAGE CAN OCCUR.
   (1) Install the 98D32104013001 SPLINT ASSEMBLY - SIDE STAY (A) or the 98D32104013004 SPLINT ASSEMBLY - SIDE STAY or the 98D32104013002 SPLINT ASSEMBLY - SIDE STAY (B) on the side stay (6) with:
  • The cables to the side stay splint-assembly
  • The strap to the side stay splint-assembly
  • The center joint of the side stay in the center hole of the side stay splint-assembly.
   (2) Tighten the strap and connect the cables to the hook. Tighten the cables.
Subtask 32-11-18-420-055-A ** ON A/C NOT FOR ALL
B. Preparation for Installation
   (1) Clean the component interfaces and/or the adjacent area with the Textile-Lint free Cotton - (Material No.14SBA1) made moist with the Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (4) Make sure that the hydraulic line end-fittings are serviceable.
   (5) Examine these components for corrosion, damage and wear:
  • The pins (22) and (23)
  • The bore of the MLG attachment lug.
   (6) Examine the bushes in the side stay bracket for corrosion, damage and wear.
     (a) If you find corrosion, damage and wear, SRM 572613 for wear dimensions (or damage) and repair procedures.
   (7) Lubricate the parts that follow with the Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) :
Subtask 32-11-18-420-055-B ** ON A/C NOT FOR ALL
B. Preparation for Installation
   (1) Clean the component interfaces and/or the adjacent area with the Textile-Lint free Cotton - (Material No.14SBA1) made moist with the Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (4) Make sure that the hydraulic line end-fittings are serviceable.
   (5) Examine these components for corrosion, damage and wear:
  • The pins (22) and (23)
  • The bore of the MLG attachment lug.
   (6) Examine the bushes in the side stay bracket for corrosion, damage and wear.
     (a) If you find corrosion, damage and wear, SRM 572613 for wear dimensions (or damage) and repair procedures.
   (7) Lubricate the parts that follow with the Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) :
Subtask 32-11-18-420-055-D ** ON A/C NOT FOR ALL
B. Preparation for Installation
   (1) Clean the component interfaces and/or the adjacent area with the Textile-Lint free Cotton - (Material No.14SBA1) made moist with the Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (4) Make sure that the hydraulic line end-fittings are serviceable.
   (5) Examine these components for corrosion, damage and wear:
  • The pins (22) and (23)
  • The bore of the MLG attachment lug.
   (6) Examine the bushes in the side stay bracket for corrosion, damage and wear.
     (a) If you find corrosion, damage and wear, SRM 572613 for wear dimensions (or damage) and repair procedures.
   (7) Lubricate the parts that follow with the Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) :
Subtask 32-11-18-420-056-A ** ON A/C NOT FOR ALL
C. Installation of the MLG Side Stay
WARNING: BE CAREFUL WHEN YOU REMOVE OR INSTALL THE MLG SIDE-STAY. IT WEIGHS 62.5kg (137.5lb).
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) Disengage the cardan pin (15) from the side stay (6) as follows:
     (a) Remove and discard the nut (12).
     (b) Remove the washer (11) from the bolt (7).
     (c) Hold the end-cap (10) with the 460006442 SPANNER - HOLDING and remove the bolt (7).
     (d) Remove the end-caps (8) and (10).
     (e) Hold the side stay (6) in position.
     (f) Use the 460006440 EXTRACTOR to remove the pin (9).
     (g) Remove the washers (14).
   (2) Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) to clean the threads of the cardan pin (15).
   (3) Apply Non Hardening Jointing Putty-High Temp. Area - Hydraulic (Material No.06LDG6) to the threads and splines of the cardan pin (15).
   (4) Install the cardan pin (15) in the MLG attachment lugs.
   (5) Install the nut (16).
   (6) Torque the nut (16) as follows:
     (a) Use the DRT69678 LWR CARDAN SKT to TORQUE the nut (16) to between 271 and 244 m.N (199.85 and 179.94 lbf.ft ) T.
     (b) Loosen the nut (16).
     (c) Do steps (a) and (b) two more times.
     (d) Use the DRT69678 LWR CARDAN SKT to TORQUE the nut (16) to between 170.1 and 153.9 m.N (125.44 and 113.50 lbf.ft ) T.
       1 If necessary, TORQUE the nut (16) to a maximum of 203 m.N (149.70 lbf.ft) to flush the lock washer (17) with the cardan pin (15).
   (7) Use the GAGE - FEELER to measure dimensions Y and Z as follows:
     (a) For the in-service components:
  • Make sure that the total clearance is between 0.043 mm (0.0017 in.) and 0.5 mm (0.0197 in.).
     (b) For the repaired or overhauled components:
  • Make sure that the total clearance is between 0.043 mm (0.0017 in.) and 0.143 mm (0.0056 in.).
     (c) If the total clearance measured in steps (a) and (b) are not in the limits, do the steps that follow:
       1 Remove the nut (16) and the cardan pin (15).
       2 Measure dimensions T and V:
  • Make sure that dimension T is between 137.917 mm (5.4298 in.) and 137.957 mm (5.4314 in.)
  • Make sure that dimension V is between138.0 mm (5.4331 in.) and 138.06 mm (5.4354 in.).
       3 Replace the bottom cardan bushes CMM 321282 and/or the lower cardan sub-assembly CMM 321283, as necessary.
     (d) If the total clearance measured in steps (a) and (b) are in the limits:
  • Remove the nut (16) and the cardan pin (15).
   (8)
F Lower and Upper Cardan-Pin Assemblies ** ON A/C NOT FOR ALL
   (9) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the chromium plated diameter of the cardan pin (5).
   (10) Lift the side stay (6) into position with the hoist and install the cardan pin (5) in the side stay bracket.
   (11) Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) to clean the threads of the cardan pin (5).
   (12) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the threads of:
  • The cardan pin (5)
  • The nut (1)
  • The lock washer (2)
  • The bolts (4).
   (13) Install the nut (1) and tighten with your hand.
   (14) Loosen the strap (but not fully) on the 98D32104013001 SPLINT ASSEMBLY - SIDE STAY (A) or the 98D32104013004 SPLINT ASSEMBLY - SIDE STAY.
   (15) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the chromium plated diameter of the cardan pin (15).
   (16) Install the cardan pin (15) in the MLG attachment lugs.
   (17) Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) to clean the threads of the cardan pin (15).
   (18) Apply Non Hardening Jointing Putty-High Temp. Area - Hydraulic (Material No.06LDG6) to the threads of the cardan pin (15).
   (19) Install the nut (16) and tighten with your hand.
   (20) Put the lower cardan sub-assembly and the washers (14) in position between the lugs of the side stay (6).
   (21) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the external diameter of the pin (9).
   (22) Install the pin (9) as follows:
     (a) Install the pin (9).
     (b) Install the end-caps (10) and (8).
     (c) Install the bolt (7), the washer (11) and the new AIPC 32-11-18-02-280 NUT (12) or AIPC 32-11-85-98-310 NUT (12).
     (d) TORQUE the nut (12) to between 11.5 and 9.5 m.N (101.77 and 84.07 lbf.in ) T.
     (e) Safety the nut (12) with the new AIPC 32-11-18-02-270 COTTER PIN (13) or AIPC 32-11-85-98-300 COTTER PIN (13).
   (23) Apply Polysulfide Sealant-General Purpose Interfay Landing Gear (Material No.06AAC5) or Polysulfide Sealant-Fuel Tank Quick Curing - (Material No.06ABF1) or the Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the head of the bolt (7) and the nut (12).
   (24) Release the lockstay from the side stay (6) and extend the lockstay actuator to hold the lockstay in the open position.
   (25) Disconnect the cables of the 98D32104013001 SPLINT ASSEMBLY - SIDE STAY (A) or the 98D32104013004 SPLINT ASSEMBLY - SIDE STAY from the hook.
   (26) Disconnect the strap and remove the 98D32104013001 SPLINT ASSEMBLY - SIDE STAY (A) or the 98D32104013004 SPLINT ASSEMBLY - SIDE STAY.
   (27) Torque the nut (1) as follows:
     (a) Push the MLG as far as possible to the closed position.
NOTE: This will make sure that the cardan pin (5) is installed fully in the side stay bracket.
     (b) Use the DRT69679 UPPER CARDAN SOCKET to TORQUE the nut (1) to between 271 and 244 m.N (199.85 and 179.94 lbf.ft ) T.
     (c) Loosen the nut (1).
     (d) Do steps (b) and (c) two more times.
     (e) Use the DRT69679 UPPER CARDAN SOCKET to TORQUE the nut (1) to between 203 and 162 m.N (149.70 and 119.47 lbf.ft ) T.
   (28) Torque the nut (16) as follows:
     (a) Push the MLG as far as possible to the closed position.
NOTE: This will make sure that the cardan pin (15) is installed fully in the MLG leg assembly.
     (b) Use the DRT69678 LWR CARDAN SKT to TORQUE the nut (16) to between 271 and 244 m.N (199.85 and 179.94 lbf.ft ) T.
     (c) Loosen the nut (16).
     (d) Do steps (b) and (c) two more times.
     (e) Use the DRT69678 LWR CARDAN SKT to TORQUE the nut (16) to between 170.1 and 153.9 m.N (125.44 and 113.50 lbf.ft ) T.
       1 If necessary, TORQUE the nut (16) to a maximum of 203 m.N (149.70 lbf.ft) to flush the lock washer (17) with the cardan pin (15).
   (29) Use the GAGE - FEELER to measure dimensions W and X as follows:
     (a) For the in-service components:
  • Make sure that the total clearance is between 0.05 mm (0.0020 in.) and 0.5 mm (0.0197 in.).
     (b) For the repaired or overhauled components:
  • Make sure that the total clearance is between 0.05 mm (0.0020 in.) and 0.2 mm (0.0079 in.).
   (30) Align the key slot of the lock washer (2) with the chamfered slot on the nut (1) and install the lock washer (2).
   (31) Make sure that the space between the lock washer (2) and the nut (1) is full of Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) .
   (32) Apply Non Hardening Jointing Putty-High Temp. Area - Structure (Material No.06LDG2) to the shank and the threads of the bolts (4).
   (33) Install the washers (3) and the bolts (4). TORQUE the bolts (4) to between 10.6 and 8.2 m.N (93.81 and 72.57 lbf.in ) T.
   (34) Safety the bolts (4) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (35) Align the key slot of the lock washer (17) with the chamfered slot on the nut (16) and install the lock washer (17). Make sure that the lock washer (17) is flush with the cardan pin (15).
   (36) Apply Non Hardening Jointing Putty-High Temp. Area - Hydraulic (Material No.06LDG6) to the shank and the threads of the bolts (19).
   (37) Install the washers (18) and the bolts (19). TORQUE the bolts (19) to between 11 and 9 m.N (97.35 and 79.65 lbf.in ) T.
   (38) Safety the bolts (18) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
   (39) Release the lockstay and put it in position on the side stay (6).
   (40) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the external diameter of the pin (22).
   (41) Put the washers (20) between the attachment of the lockstay and the center joint lugs of the side stay (6) to install the pin (22).
   (42) Put the washer (21) on the pin (22) and install the pin (22).
   (43) Install the washer (30) and the new AIPC 32-11-18-01-090 NUT (28) or AIPC 32-11-85-97-090 NUT (28).
   (44) TORQUE the nut (28) to between 42 and 36 m.N (30.97 and 26.55 lbf.ft ) T.
   (45) Safety the nut (28) with the new AIPC 32-11-18-01-030 COTTER PIN (27) or AIPC 32-11-85-97-030 COTTER PIN (27).
   (46) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the external diameter of the pin (23).
   (47) Put the washers (24) between the lock spring link and the lockstay attachment lug and install the pin (23).
   (48) Install the washer (25) and the nut (26).
   (49) TORQUE the nut (26) to between 9.5 and 8 m.N (84.07 and 70.80 lbf.in ) T.
   (50) Safety the nut (26) with the new AIPC 32-11-18-01-080 COTTER PIN (27) or AIPC 32-11-85-97-080 COTTER PIN (27).
   (50) Install the MLG lockstay actuating-cylinder (Ref. AMM TASK 32-11-21-400-001).
   (51) Install the MLG lock springs (Ref. AMM TASK 32-11-19-400-001).
   (52) Do the dimensional check of the proximity sensors on the side stay (6) (Ref. AMM TASK 32-31-73-200-001).
   (53) Do the detailed dimensional check of the MLG lockstay assembly (Ref. AMM TASK 32-11-00-220-003).
   (54) Apply Polysulfide Sealant-General Purpose Interfay Landing Gear (Material No.06AAC5) or the Polysulfide Sealant-Fuel Tank Quick Curing - (Material No.06ABF1) or the Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to:
  • The ends of the cardan pin (15)
  • The heads of the pins (22) and (23)
  • The heads of the bolts (4) and (19)
  • The nuts (16), (26) and (28)
  • The washers (3), (18) and (30)
  • The lock washer (2).
   (55) Lubricate the side stay (6) through the greasers (Ref. AMM TASK 12-22-32-640-001).
Subtask 32-11-18-420-056-B ** ON A/C NOT FOR ALL
C. Installation of the MLG Side Stay
WARNING: BE CAREFUL WHEN YOU REMOVE OR INSTALL THE MLG SIDE-STAY. IT WEIGHS 62.5kg (137.5lb).
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) Disengage the cardan pin (15) from the side stay (6) as follows:
     (a) Remove and discard the nut (12).
     (b) Remove the washer (11) from the bolt (7).
     (c) Hold the end-cap (10) with the 460006442 SPANNER - HOLDING and remove the bolt (7).
     (d) Remove the end-caps (8) and (10).
     (e) Hold the side stay (6) in position.
     (f) Use the 460006440 EXTRACTOR to remove the pin (9).
     (g) Remove the washers (14).
   (2) Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) to clean the threads of the cardan pin (15).
   (3) Apply Non Hardening Jointing Putty-High Temp. Area - Hydraulic (Material No.06LDG6) to the threads and splines of the cardan pin (15).
   (4) Install the cardan pin (15) in the MLG attachment lugs.
   (5) Install the nut (16).
   (6) Torque the nut (16) as follows:
     (a) Use the DRT69680 LWR CARDAN SKT and TORQUE the nut (16) to between 420 and 380 m.N (309.73 and 280.24 lbf.ft ) T.
     (b) Loosen the nut (16).
     (c) Do steps (a) and (b) two more times.
     (d) Use the DRT69680 LWR CARDAN SKT and TORQUE the nut (16) to between 360 and 162 m.N (265.49 and 119.47 lbf.ft ) T.
       1 If necessary, TORQUE the nut (16) to a maximum of 360 m.N (265.49 lbf.ft) to flush the lock washer (17) with the cardan pin (15).
   (7) Use the GAGE - FEELER to measure dimensions Y and Z as follows:
     (a) For the in-service components:
  • Make sure that the total clearance is between 0.043 mm (0.0017 in.) and 0.5 mm (0.0197 in.).
     (b) For the repaired or overhauled components:
  • Make sure that the total clearance is between 0.043 mm (0.0017 in.) and 0.143 mm (0.0056 in.).
     (c) If the total clearance measured in steps (a) and (b) are not in the limits, do the steps that follow:
       1 Remove the nut (16) and the cardan pin (15).
       2 Measure dimensions T and V:
  • Make sure that dimension T is between 137.917 mm (5.4298 in.) and 137.957 mm (5.4314 in.)
  • Make sure that dimension V is between138.0 mm (5.4331 in.) and 138.06 mm (5.4354 in.).
       3 Replace the bottom cardan bushes CMM 321289 and/or the lower cardan sub-assembly CMM 321290 as necessary.
     (d) If the total clearance measured in steps (a) and (b) are in the limits:
  • Remove the nut (16) and the cardan pin (15).
   (8)
F Lower and Upper Cardan-Pin Assemblies ** ON A/C NOT FOR ALL
   (9) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the chromium plated diameter of the cardan pin (5).
   (10) Lift the side stay (6) into position with the hoist and install the cardan pin (5) in the side stay bracket.
   (11) Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) to clean the threads of the cardan pin (5).
   (12) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the threads of:
  • The cardan pin (5)
  • The nut (1).
  • The lock washer (2)
  • The bolts (4).
   (13) Install the nut (1) and tighten with your hand.
   (14) Loosen the strap (but not fully) on the 98D32104013004 SPLINT ASSEMBLY - SIDE STAY or the 98D32104013001 SPLINT ASSEMBLY - SIDE STAY (A) or the 98D32104013002 SPLINT ASSEMBLY - SIDE STAY (B).
   (15) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the chromium plated diameter of the cardan pin (15).
   (16) Install the cardan pin (15) in the MLG attachment lugs.
   (17) Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) to clean the threads of the cardan pin (15).
   (18) Apply Non Hardening Jointing Putty-High Temp. Area - Hydraulic (Material No.06LDG6) to the threads of the cardan pin (15).
   (19) Install the nut (16) and tighten with your hand.
   (20) Put the lower cardan sub-assembly and the washers (14) in position between the lugs of the side stay (6).
   (21) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the external diameter of the pin (9).
   (22) Install the pin (9) as follows:
     (a) Install the pin (9).
     (b) Install the end-caps (10) and (8).
     (c) Install the bolt (7), the washer (11) and the new AIPC 32-11-18-02-280 NUT (12) or AIPC 32-11-85-98-310 NUT (12).
     (d) TORQUE the nut (12) to between 30 and 25 m.N (22.12 and 18.44 lbf.ft ) T.
     (e) Safety the nut (12) with a new AIPC 32-11-18-02-270 COTTER PIN (13) or AIPC 32-11-85-98-300 COTTER PIN (13).
   (23) Apply Polysulfide Sealant-General Purpose Interfay Landing Gear (Material No.06AAC5) or Polysulfide Sealant-Fuel Tank Quick Curing - (Material No.06ABF1) or the Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the head of the bolt (7) and the nut (12).
   (24) Release the lockstay from the side stay (6) and extend the lockstay actuator to hold the lockstay in the open position.
   (25) Disconnect the cables of the 98D32104013004 SPLINT ASSEMBLY - SIDE STAY or the 98D32104013001 SPLINT ASSEMBLY - SIDE STAY (A) or the 98D32104013002 SPLINT ASSEMBLY - SIDE STAY (B) from the hook.
   (26) Disconnect the strap and remove the 98D32104013004 SPLINT ASSEMBLY - SIDE STAY or the 98D32104013001 SPLINT ASSEMBLY - SIDE STAY (A) or the 98D32104013002 SPLINT ASSEMBLY - SIDE STAY (B).
   (27) Torque the nut (1) as follows:
     (a) Push the MLG as far as possible to the closed position.
NOTE: This will make sure that the cardan pin (5) is installed fully in the side stay bracket.
     (b) Use the DRT69681 UPPER CARDAN SKT and TORQUE the nut (1) to between 271 and 244 m.N (199.85 and 179.94 lbf.ft ) T.
     (c) Loosen the nut (1).
     (d) Do steps (b) and (c) two more times.
     (e) Use the DRT69681 UPPER CARDAN SKT and TORQUE the nut (1) to between 203 and 162 m.N (149.70 and 119.47 lbf.ft ) T.
   (28) Torque the nut (16) as follows:
     (a) Push the MLG as far as possible to the closed position.
NOTE: This will make sure that the cardan pin (15) is installed fully in the side stay bracket.
     (b) Use the DRT69680 LWR CARDAN SKT and TORQUE the nut (16) to between 420 and 380 m.N (309.73 and 280.24 lbf.ft ) T.
     (c) Loosen the nut (16).
     (d) Do steps (b) and (c) two more times.
     (e) Use the DRT69680 LWR CARDAN SKT and TORQUE the nut (16) to between 360 and 162 m.N (265.49 and 119.47 lbf.ft ) T.
       1 If necessary, TORQUE the nut (16) to a maximum of 360 m.N (265.49 lbf.ft) to flush the lock washer (17) with the cardan pin (15).
   (29) Use the GAGE - FEELER to measure dimensions W and X as follows:
     (a) For the in-service components:
  • Make sure that the total clearance is between 0.05 mm (0.0020 in.) and 0.5 mm (0.0197 in.).
     (b) For the repaired or overhauled components:
  • Make sure that the total clearance is between 0.05 mm (0.0020 in.) and 0.2 mm (0.0079 in.).
   (30) Align the key slot of the lock washer (2) with the chamfered slot on the nut (1) and install the lock washer (2).
   (31) Make sure that the space between the lock washer (2) and the nut (1) is full of Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) .
   (32) Apply Non Hardening Jointing Putty-High Temp. Area - Structure (Material No.06LDG2) to the shank and the threads of the bolts (4).
   (33) Install the washers (3) and the bolts (4).
   (34) TORQUE the bolts (4) to between 10.6 and 8.2 m.N (93.81 and 72.57 lbf.in ) T.
   (35) Safety the bolts (4) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (36) Align the key slot of the lock washer (17) with the chamfered slot on the nut (16) and install the lock washer (17). Make sure that the lock washer (17) is flush with the cardan pin (15).
   (37) Apply Non Hardening Jointing Putty-High Temp. Area - Hydraulic (Material No.06LDG6) to the threads and splines of bolts (19).
   (38) Install the washers (18) and the bolts (19).
   (39) TORQUE the bolts (19) to between 11 and 9 m.N (97.35 and 79.65 lbf.in ) T.
   (40) Safety the bolts (19) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (41) Release the lockstay and put it in position on the side stay (6).
   (42) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the external diameter of the pin (22).
   (43) Put the washers (20) between the attachment of the lockstay and the center joint lugs of the side stay (6) to install pin (22).
   (44) Put the washer (21) on the pin (22) and install the pin (22).
   (45) Install the washer (30) and the new AIPC 32-11-18-01-090 NUT (28) or AIPC 32-11-85-97-090 NUT (28).
   (46) TORQUE the nut (28) to between 42 and 36 m.N (30.97 and 26.55 lbf.ft ) T.
   (47) Safety the nut (28) with a new AIPC 32-11-18-01-030 COTTER PIN (29) or AIPC 32-11-85-97-080 COTTER PIN (29).
   (48) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the external diameter of the pin (23).
   (49) Put the washers (24) between the lock spring link and the lockstay attachment lug.
   (50) Install the pin (23), with the head of the pin aft, the washer (25) and the new AIPC 32-11-18-01-040 NUT (26) or AIPC 32-11-85-97-040 NUT (26).
   (50) TORQUE the nut (26) to between 9.5 and 8 m.N (84.07 and 70.80 lbf.in ) T.
   (51) Safety the nut (26) with a new AIPC 32-11-18-01-030 COTTER PIN (27) or AIPC 32-11-85-97-030 COTTER PIN (27).
   (52) Install the MLG lockstay actuating-cylinder (Ref. AMM TASK 32-11-21-400-001).
   (53) Install the MLG lock springs (Ref. AMM TASK 32-11-19-400-001).
   (54) Do the dimensional check of the proximity sensors on the side stay (Ref. AMM TASK 32-31-73-200-001).
   (55) Do the detailed dimensional check of the MLG lockstay assembly (Ref. AMM TASK 32-11-00-220-003).
   (56) Apply Polysulfide Sealant-General Purpose Interfay Landing Gear (Material No.06AAC5) or the Polysulfide Sealant-Fuel Tank Quick Curing - (Material No.06ABF1) or the Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the areas around:
  • The ends of the cardan pin (15)
  • The heads of the pins (22) and (23)
  • The heads of the bolts (4) and (19)
  • The nuts (16), (26) and (28)
  • The washers (3), (18) and (30)
  • The lock washer (2).
   (57) Lubricate the side stay (6) through the greasers (Ref. AMM TASK 12-22-32-640-001).
Subtask 32-11-18-410-052-A
D. Close Access
WARNING: USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
   (1) Install the cover plates (41) and (42) as follows:
F Over-Wing Panel Access-Hole - Location and Detail
     (a) Put the cover plates (41) and (42) in position and install the bridge plates (43) and (44) and the nuts (45) and (46).
     (b) Torque the nuts (45) and (46) as follows:
       1 TORQUE the nuts (45) and (46) to between 5 and 3 m.N (44.25 and 26.55 lbf.in ) T.
       2 If necessary, loosen the nuts (45) and (46) until you can align the holes for the cotter pins (47) and (48).
       3 To make sure that the nuts (45) and (46) are sufficiently tight:
  • Use the 0.05 MM (0.0020 IN.) GAGE - FEELER and make sure that it does not go in the space between the nuts (45) and (46) and the bridge plates (43) and (44).
     (c) Safety the nut (45) with the new AIPC 57-51-85-67-020 COTTER PIN (47).
     (d) Safety the nut (46) with the new AIPC 57-51-85-67-010 COTTER PIN (48).
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) Remove the access platform(s).
Subtask 32-11-18-865-054-A
E. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUL/G/LGCIU/SYS1/NORM1GAC09
** ON A/C NOT FOR ALL
121VULGCIU/BAT SPLY/SYS259GAR33
121VULGCIU/BAT SPLY/SYS158GAR32
** ON A/C ALL
121VUHYDRAULIC/LGCIU/SYS22GAQ35
121VUHYDRAULIC/LGCIU/SYS1/GRND SPLY52GAQ34
** ON A/C NOT FOR ALL
121VULGCIU/BAT SPLY/SYS259GAR32
121VULGCIU/BAT SPLY/SYS158GAR31
Subtask 32-11-18-860-054-A
F. Aircraft Maintenance Configuration
   (1) If you did not de-energize the aircraft electrical circuits, put the aircraft back to the ground configuration (Ref. AMM TASK 32-00-00-860-002) (Ref. AMM TASK 32-00-00-860-002).
   (2) Connect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-002).
   (3) Pressurize the applicable hydraulic reservoirs (Ref. AMM TASK 29-14-00-614-002) (Ref. AMM TASK 29-14-00-614-002).
Subtask 32-11-18-720-051-A
G. Functional Test
   (1) Do a functional test of the normal extension and retraction of the landing gear (Ref. AMM TASK 32-31-00-720-002).
   (2) Do a functional test of the free-fall extension system (Ref. AMM TASK 32-33-00-720-001).
Subtask 32-11-18-790-051-A
H. Leak Test
   (1) Make sure that all the connections that you have moved are tightened, and that there are no hydraulic leakage.
5. Close-up
Subtask 32-11-18-586-051-A
A. Aircraft Jacking
   (1) Lower the aircraft off jacks (Ref. AMM TASK 07-11-00-586-002).
Subtask 32-11-18-942-052-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 00:40:32 UTC
"Aviabrain" 2025