W DOC AIRBUS | AMM A320F

Adjustment of the NLG Extension/Steering Proximity Sensors

TASK 32-31-73-820-006-A
Adjustment of the NLG Extension/Steering Proximity Sensors

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.
FIN: 24GA
FIN: 25GA
1. Reason for the Job
To set the clearances of the NLG extension proximity sensors to the correct dimensions.
NOTE: To temporarily release the aircraft to service only for 50FC, refer to the alternative AMM task 32-31-73-820-006-A01.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
CAP - BLANKING
No specific
1
GAGE - FEELER
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
SCRAPER - NON METALLIC
No specific
AR
WARNING NOTICE(S)
No specific
AR
WEDGE - NON METALLIC
No specific
Torque wrench: range to between 16 and 13 m.N (141.59 and 115.04 lbf.in ) T
No specific
Torque wrench: range to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T
98D32203502000
2
SAFETY PIN - NLG DOOR
M46214-1000
1
TOOL - ADJUSTMENT
M46214-2000
1
TOOL, ADJUSTMENT
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.05EML7)
Epoxy Adhesive-- - Legacy 3
(Material No.06ABA1)
Polysulfide Sealant-Fuel Tank Brushable -
(Material No.06ABF1)
Polysulfide Sealant-Fuel Tank Quick Curing -
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.08BBB1)
Non Aqueous Cleaner-- Petroleum Based -
(Material No.14SBA1)
Textile-Lint free Cotton -
No specific
lockwire (MS20995C32)
 C. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
68
SHIM(S)
AIPC 32-21-11-10-070
35
SHIM
AIPC 32-21-11-13-010
65
SHIM
AIPC 32-21-11-13-010
39
SHIM
AIPC 32-21-11-13-030
52
SHIM
AIPC 32-21-11-13-030
68
SHIM(S)
AIPC 32-21-11-50-250
35
SHIM
AIPC 32-21-11-53-010
65
SHIM
AIPC 32-21-11-53-010
39
SHIM
AIPC 32-21-11-53-030
52
SHIM
AIPC 32-21-11-53-030
68
SHIM(S)
AIPC 32-21-11-90-250
35
SHIM
AIPC 32-21-11-93-010
65
SHIM
AIPC 32-21-11-93-010
39
SHIM
AIPC 32-21-11-93-030
52
SHIM
AIPC 32-21-11-93-030
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 07-11-00-581-003-A
Lifting of the Aircraft at the Forward Jacking Point, MLG Wheels on the Ground
TASK 07-11-00-586-001-A
Lowering of the Aircraft at Forward Jacking Point, MLG Wheels on the Ground
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 29-10-00-864-001-A
Depressurize the Green Hydraulic System
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 31-36-00-740-008-A
Access to the Parameter Call-Up Menus
TASK 32-00-00-481-001-A
Installation of the Safety Devices on the Landing Gears
TASK 32-00-00-481-002-A
Installation of the Safety Devices on the Landing Gear Doors
TASK 32-00-00-860-001-A
Flight Configuration Precautions with Electrical Power
TASK 32-00-00-860-001-A-01
Flight Configuration Precautions without Electrical Power
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 32-22-00-010-001-A
Nose Gear Doors - Ground Doors Opening
TASK 32-22-00-410-001-A
Nose Gear Doors - Ground Doors Closing
F Dimensional Check of NLG Extension/Steering Proximity Sensors 24GA, 25GA
F Component Breakdown-NLG Extension/Steering Proximity Sensors 24GA, 25GA
3. Job Set-up
Subtask 32-31-73-941-063-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 ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
   (3) On panel 400VU:
  • Make sure that the landing-gear control-lever is in the DOWN position
  • Put a WARNING NOTICE(S) in position to tell persons not to operate the Landing Gear and the NLG doors.
Subtask 32-31-73-860-065-A
B. Aircraft Maintenance Configuration
   (1) Make sure that the Green hydraulic system is depressurized
(Ref. AMM TASK 29-10-00-864-001).
   (2) Disconnect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-001).
   (3) If the electrical power is not necessary for other maintenance tasks, de-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002). Then, it is not necessary to open the LGCIU circuit breakers.
   (4) If the electrical power is necessary, do the precautions for flight configuration (Ref. AMM TASK 32-00-00-860-001) before you open the LGCIU circuit breakers.
Subtask 32-31-73-865-079-A
C. Open, safety and tag 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 32-31-73-010-060-A
D. Get Access
   (1) Open the NLG doors (Ref. AMM TASK 32-22-00-010-001).
   (2) Make sure that a 98D32203502000 SAFETY PIN - NLG DOOR is installed in each NLG door (Ref. AMM TASK 32-00-00-481-002).
Subtask 32-31-73-582-063-A
E. Lift the Aircraft on Jacks
   (1) Lift the aircraft on jacks to fully extend the NLG shock absorber (Ref. AMM TASK 07-11-00-581-003).
4. Procedure
Subtask 32-31-73-220-087-A
A. Dimensional Check
F Dimensional Check of NLG Extension/Steering Proximity Sensors 24GA, 25GA
NOTE: This procedure is applicable for NLG leg-assembly part numbers:
  • 10-375902-001
  • D23175000-29
  • D23175001-23
  • D23175005-17
  • D23175100-27
  • D23175101-23
  • D23589520-12
  • D23757500-9
  • 10-375901-000.
   (1) For (system 1) proximity sensor 24GA:
     (a) Make sure that dimension V measures 2 mm (0.0787 in.) +/- 0.20 mm (0.0079 in.).
     (b) Make sure that dimension U measures 1.35 mm (0.0531 in.) +/- 0.75 mm (0.0295 in.).
   (2) For (system 2) proximity sensor 25GA:
     (a) Make sure that dimension U1 measures 1.35 mm (0.0531 in.) +/- 0.75 mm (0.0295 in.).
     (b) Make sure that dimension V1 measures 2 mm (0.0787 in.) +/- 0.20 mm (0.0079 in.).
   (3) If the dimensions are incorrect, do the adjustment procedure in Para. 4.D.
Subtask 32-31-73-220-091-A ** ON A/C NOT FOR ALL
B. Dimensional Check
F Dimensional Check of NLG Extension/Steering Proximity Sensors 24GA, 25GA ** ON A/C NOT FOR ALL
NOTE: This procedure is applicable for NLG leg-assembly part numbers:
  • 10-375902-002
  • D23175000-30
  • D23175001-24
  • D23175005-18
  • D23175100-28
  • D23175101-24
  • D23589520-13
  • D23757500-10
  • 10-375901-001.
   (1) For (system 1) proximity sensor 24GA:
     (a) Make sure that dimension V measures 2 mm (0.0787 in.).
     (b) Make sure that dimension U measures 3.50 mm (0.1378 in.).
   (2) For (system 2) proximity sensor 25GA:
     (a) Make sure that dimension U1 measures 3.50 mm (0.1378 in.).
     (b) Make sure that dimension V1 measures 2 mm (0.0787 in.).
   (3) If the dimensions are incorrect, do the adjustment procedure in Para. 4.E.
Subtask 32-31-73-860-067-A
C. Aircraft Maintenance Configuration
   (1) On the nose gear leg, make sure that the towing lever is in the normal (engaged) position.
   (2) On panel 400VU, make sure that the landing gear control lever is in the DOWN position.
   (3) Make sure that the rudder pedals and the two nosewheel steering handwheels are in the neutral position.
Subtask 32-31-73-820-055-A
D. Adjustment of the NLG Extension/Steering Proximity Sensors 24GA (25GA)
F Dimensional Check of NLG Extension/Steering Proximity Sensors 24GA, 25GA
F Component Breakdown-NLG Extension/Steering Proximity Sensors 24GA, 25GA
NOTE: This procedure is applicable for NLG leg-assembly part numbers:
  • 10-375902-001
  • D23175000-29
  • D23175001-23
  • D23175005-17
  • D23175100-27
  • D23175101-23
  • D23589520-12
  • D23757500-9
  • 10-375901-000.
NOTE: You can install a sensor target without a spacer/shim if the correct clearance can be set without the spacer/shim.
   (1) For system 1 (24GA), if dimension U or dimension V is incorrect, do the steps that follow:
     (a) Make sure that the target lever (53), the sensor mounting bracket (51) and the bracket (66) are in the correct condition.
     (b) Disconnect the electrical connector (60) from the proximity sensor (59).
     (c) Make sure that the electrical connector (60) is in the correct condition.
     (d) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
     (e) To get correct dimension U:
NOTE: To get correct dimension U, it is necessary to first adjust dimensions X, W and V.
       1 Use a SCRAPER - NON METALLIC to remove all the sealant from the items that follow:
  • The screws (48) and (55)
  • The washers (56) and (62)
  • The nuts (57) and (61).
       2 Remove the nuts (57), the washers (56), the screws (55) and the target (54).
       3 If the shim (52) is installed, do not remove it from the sensor mounting bracket (51).
       4 Remove the nuts (61), the washers (62), the screws (48) and the sensor mounting bracket (51).
       5 If the shim (65) is installed, carefully remove it with a WEDGE - NON METALLIC. Discard the shim (65).
       6 Install the templates -1 and -2 of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT on the target lever (53).
       7 Make sure that the target lever (53) is parallel with the center-line of the leg.
       8 Use a SCRAPER - NON METALLIC to remove all the sealant from the items that follow:
  • The nut (71)
  • The tab washer (70)
  • The threaded end of the clevis (67).
       9 Unlock the tab washer (70).
       10 Loosen the nut (71). Do not remove the nut (71).
       11 Put the location lug of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT in the applicable screw hole of the bracket (66).
       12 Use the templates -1 and -2 of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT to measure dimension X. Record dimension X.
       13 If a shim is necessary, adjust the new AIPC 32-21-11-93-010 SHIM (65) or the new AIPC 32-21-11-13-010 SHIM (65) or the new AIPC 32-21-11-53-010 SHIM (65). Make sure that you get correct dimension X recorded before, +/- 0.1 mm (0.0039 in.).
       14 Remove the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT from the target lever (53).
       15 If necessary, temporarily install:
  • The new shim (65) with the bolts (48)
  • The sensor mounting bracket (51)
  • The washers (62)
  • The nuts (61).
       16 Measure dimension W.
       17 Make sure that dimension W is 9.1 mm (0.3583 in.) +/- 0.1 mm (0.0039 in.).
       18 If dimension W is incorrect, do the steps (e) 1 to (e) 17 again.
       19 Remove the nuts (61), the washers (62), the sensor mounting bracket (51), (if necessary) the new shim (65) and the bolts (48).
       20 If the shim (65) was adjusted, do the procedure in Para 4.F.
     (f) To get correct dimension V:
       1 Use a SCRAPER - NON METALLIC to remove all the sealant from the items that follow:
  • The screws (48), (55) and (58)
  • The washers (56), (62) and (63)
  • The nuts (57), (61) and (64).
       2 Remove the nuts (64), the washers (63), the screws (58) and the proximity sensor (59).
       3 If the shim (65) is installed, do not remove it.
       4 Remove the items that follow:
  • The nuts (61)
  • The washers (62)
  • The screws (48)
  • The sensor mounting bracket (51) together with the shim (65) if installed.
       5 If installed, carefully remove the shim (52) with a WEDGE - NON METALLIC. Discard the shim (52).
       6 Install the templates -1 and -2 of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT on the target lever (53).
       7 Make sure that the target lever (53) is parallel with the center-line of the leg.
       8 Put the location lug of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT in the applicable screw hole of the bracket (66).
       9 Use the templates -1 and -2 of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT to measure dimension Z. Record dimension Z.
       10 Use the equation below to calculate dimension Y +/- 0.1 mm (0.0039 in.):
Y = 21.0 mm (0.827 in.) - Z

       11 If a shim is necessary, adjust the new AIPC 32-21-11-93-030 SHIM (52) or the new AIPC 32-21-11-13-030 SHIM (52) or the new AIPC 32-21-11-53-030 SHIM (52). Make sure that you get correct dimension Y recorded before, +/- 0.1 mm (0.0039 in.).
       12 Remove the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT from the target lever (53).
       13 If the shim (52) was adjusted, do the procedure in Para. 4.F.
     (g) Do a check of dimension T:
       1 Remove the nut (71), the tab washer (70) and the clevis (67) from the support (69). Do not disconnect the link from the clevis (67).
       2 If the shim(s) (68) are installed, carefully remove them with a WEDGE - NON METALLIC. Discard the shim(s) (68).
       3 Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the mating surfaces of:
  • The clevis (67)
  • The support (69).
       4 Temporarily install the clevis (67) onto the support (69). Do not install the tab washer (70) or the nut (71).
       5 Temporarily install the sensor mounting bracket (51) with the items that follow:
  • The bolts (48)
  • The shim (65) if necessary
  • The washers (62)
  • The nut (61).
       6 Install the template -3-1000 of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT on the sensor mounting bracket (51) with:
  • The shim (52), if necessary.
       7 Move the target lever (53) until it is flush against the angular face of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT.
       8 Measure and record dimension T.
       9 If a shim is necessary, adjust the new 32211190-250SHIM(S)68 or the new 32211110-070SHIM(S)68 or the new 32211150-250SHIM(S)68. Make sure that you get correct dimension T recorded before.
       10 Remove the shim (52) if installed and the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT from the sensor mounting bracket (51).
       11 If the shim (65) is installed, do not remove it.
       12 Remove the items that follow:
  • The nuts (61)
  • The washers (62)
  • The bolts (48)
  • The sensor mounting bracket (51) together with the shim (65) if installed.
       13 Remove the clevis (67) from the support (69).
       14 If the shim(s) (68) was adjusted, do the procedure in Para. 4.F.
       15 Install the clevis (67) onto the support (69) together with:
  • The new shim(s) (68) if necessary
  • The tab washer (70)
  • The nut (71).
       16 Lock the tab washer (70).
       17 Apply a thick layer of Polysulfide Sealant-Fuel Tank Quick Curing - (Material No.06ABF1) to the threaded end of the items that follow:
  • The clevis (67)
  • The tab washer (70)
  • The nut (71).
   (2) For system 2 (25GA), if dimension U1 or dimension V1 is incorrect, do the steps that follow:
     (a) Make sure that the target lever (41), the sensor mounting bracket (38) and the bracket (50) are in the correct condition.
     (b) Disconnect the electrical connector (47) from the proximity sensor (40).
     (c) Make sure that the electrical connector (47) is in the correct condition.
     (d) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
     (e) To get correct dimension V1:
       1 Use a SCRAPER - NON METALLIC to remove all the sealant from the items that follow:
  • The screws (43), (46) and (49)
  • The washers (33), (36) and (44)
  • The nuts (34), (37) and (45).
       2 Remove the nuts (34), the washers (33), the screws (46) and the proximity sensor (40).
       3 If the shim (35) is installed, do not remove it.
       4 Remove the items that follow:
  • The nuts (37)
  • The washers (36)
  • The bolts (49)
  • The sensor mounting bracket (38) together with the shim (35) if installed.
       5 If the shim (39) is installed, carefully remove it with a WEDGE - NON METALLIC. Discard the shim (39).
       6 Install the templates -1 and -2 of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT on the target lever (41).
       7 Make sure that the target lever (41) is parallel with the center-line of the leg.
       8 Use a SCRAPER - NON METALLIC to remove all the sealant from the items that follow:
  • The nut (71)
  • The tab washer (70)
  • The threaded end of the clevis (67).
       9 Unlock the tab washer (70).
       10 Loosen the nut (71). Do not remove the nut (71).
       11 Put the location lug of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT in the applicable screw hole of the bracket (50).
       12 Use the templates -1 and -2 of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT to measure dimension Record dimension Z1.
       13 Use the equation below to calculate dimension Y1 +/- 0.1 mm (0.0039 in.):
Y1 = 21.0 mm (0.827 in.) - Z1

       14 If a shim is necessary, adjust the new AIPC 32-21-11-93-030 SHIM (39) or the new AIPC 32-21-11-13-030 SHIM (39) or the new AIPC 32-21-11-53-030 SHIM (39). Make sure that you get correct dimension Y1 recorded before, +/- 0.1 mm (0.0039 in.).
       15 Remove the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT from the target lever (41).
       16 If the shim (39) was adjusted, do the procedure in Para. 4.F.
     (f) To get correct dimension U1:
NOTE: To get correct dimension U1, it is necessary to first adjust dimensions X1, W1 and V1.
       1 Use a SCRAPER - NON METALLIC to remove all the sealant from the items that follow:
  • The screws (43) and (49)
  • The washers (36) and (44)
  • The nuts (37) and (45).
       2 Remove the nuts (45), the washers (44), the screws (43) and the target (42).
       3 Remove the nuts (37), the washers (36), the screws (49) and the sensor mounting bracket (38).
       4 If the shim (39) is installed, carefully remove it from the sensor mounting bracket (38).
       5 If the shim (35) is installed, carefully remove it with a WEDGE - NON METALLIC. Discard the shim (35).
       6 Install the templates -1 and -2 of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT on the target lever (41).
       7 Make sure that the target lever (41) is parallel with the center-line of the leg.
       8 Put the location lug of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT in the applicable screw hole of the bracket (50).
       9 Use the templates -1 and -2 of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT to measure dimension X1. Record dimension X1.
       10 If a shim is necessary, adjust the new AIPC 32-21-11-93-010 SHIM (35) or the new AIPC 32-21-11-13-010 SHIM (35) or the new AIPC 32-21-11-53-010 SHIM (35). Make sure that you get correct dimension X1 recorded before, +/- 0.1 mm (0.0039 in.).
       11 Remove the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT from the target lever (41).
       12 If necessary, temporarily install:
  • The new shim (35) with the bolts (49)
  • The sensor mounting bracket (38)
  • The washers (36)
  • The nuts (37).
       13 Measure dimension W1.
       14 Make sure that dimension W1 is 9.1 mm (0.3583 in.) +/- 0.1 mm (0.0039 in.).
       15 If dimension W1 is incorrect, do steps (f) 1 to (f) 14 again.
       16 Remove the items that follow:
  • The nuts (37)
  • The washers (36)
  • The sensor mounting bracket (38)
  • The new shim (35) if installed
  • The bolts (49).
       17 If the shim (63) was adjusted, do the procedure in Para. 4.F.
     (g) Do a check of dimension T:
       1 Remove the nut (71), the tab washer (70) and the clevis (67) from the support (69). Do not disconnect the link from the clevis (67).
       2 If the shim(s) (68) are installed carefully remove them with a WEDGE - NON METALLIC. Discard the shim(s) (68).
       3 Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the mating surfaces of:
  • The clevis (67)
  • The support (69).
       4 Temporarily install the clevis (67) onto the support (69). Do not install the tab washer (70) or the nut (71).
       5 Temporarily install the sensor mounting bracket (38) with:
  • The bolts (49)
  • The shim (35) if necessary
  • The washers (36)
  • The nuts (37).
       6 Install the template -3-1000 of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT on the sensor mounting bracket (38) with:
  • The shim (39) if necessary.
       7 Move the target lever (41) until it is flush against the angular face of the M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT.
       8 Measure dimension T.
       9 If a shim is necessary, adjust the new 32211190-250SHIM(S)68 or the new 32211110-070SHIM(S)68 or the new 32211150-250SHIM(S)68. Make sure that you get correct dimension T recorded before.
       10 Remove:
  • The shim (39) if installed
  • The M46214-1000 TOOL - ADJUSTMENT or the M46214-2000 TOOL, ADJUSTMENT from the sensor mounting bracket (38).
       11 If the shim (35) is installed, do not remove it.
       12 Remove items that follow:
  • The nuts (37)
  • The washers (36)
  • The bolts (49)
  • The sensor mounting bracket (38) together with the shim (35) if installed.
       13 Remove the clevis (67) from the support (69).
       14 If the shim(s) (68) was adjusted, do the procedure in Para. 4.F.
       15 Install the clevis (67) onto the support (69) together with:
  • The new shim(s) (68) if necessary
  • The tab washer (70)
  • The nut (71).
       16 Lock the tab washer (70).
       17 Apply a thick layer of Polysulfide Sealant-Fuel Tank Quick Curing - (Material No.06ABF1) to the threaded end of the clevis (67), the tab washer (70) and the nut (71).
Subtask 32-31-73-820-064-A ** ON A/C NOT FOR ALL
E. Adjustment of the NLG Extension/Steering Proximity Sensors 24GA (25GA) with Adjustment Tool (F28276000)

NOTE: This procedure is applicable for NLG leg-assembly part numbers:
  • 10-375902-002
  • D23175000-30
  • D23175001-24
  • D23175005-18
  • D23175100-28
  • D23175101-24
  • D23589520-13
  • D23757500-10
  • 10-375901-001.
NOTE: You can install a sensor target without a spacer/shim if the correct clearance can be set without the spacer/shim.
NOTE: The Adjustment Tool (F28276000) contains:
  • The Y-setting shim (GS48354) and the X-setting shim (GS48363) to do a check of the clearance between the proximity sensors and targets.
  • One Go/No Go gage (T47948) to do a check if the adjustment is satisfactory.
   (1) For system 1 (24GA), if dimension U or dimension V is incorrect, do the steps that follow:
     (a) Make sure that the target lever (53), the sensor mounting bracket (51) and the bracket (66) are in the correct condition.
     (b) Disconnect the electrical connector (60) from the proximity sensor (59).
     (c) Make sure that the electrical connector (60) is in the correct condition.
     (d) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
     (e) To get correct dimension U, do the steps that follow:
NOTE: To get correct dimension U, it is necessary to first adjust dimensions X, W and V.
       1 Use a SCRAPER - NON METALLIC to remove all the sealant from the items that follow:
  • The screws (48), (55) and (58)
  • The washers (56), (62) and (63)
  • The nuts (57), (61) and (64).
       2 Remove the nuts (57), the washers (56), the screws (55) and the target (54) from the target lever (53).
       3 Remove the nuts (64), the washers (63), the screws (58), the proximity sensor (59) from the sensor mounting bracket (51).
       4 If the shim (52) is installed, do not remove it from the sensor mounting bracket (51).
       5 Remove the nuts (61), the washers (62), the screws (48) from the sensor mounting bracket (51).
       6 If the shim (65) is installed, carefully remove it with a WEDGE - NON METALLIC. Discard the shim (65).
       7 Put the Y-setting shim (GS48354) in position on the lever (53) and the mounting bracket (51) together with the shim (52).
       8 Attach the Y-setting shim (GS48354) with the two pins and the two screws to the target lever (53) and the sensor mounting bracket (51).
       9 Measure and record dimension B between the sensor mounting bracket (51) and the bracket (66).
       10 Measure the new AIPC 32-21-11-93-010 SHIM (65) or the new AIPC 32-21-11-13-010 SHIM (65) or the new AIPC 32-21-11-53-010 SHIM (65) and adjust it to dimension B.
       11 Remove the two screws, the two pins and the Y-setting shim (GS48354).
       12 If the shim (65) was adjusted, do the procedure in para 4.F.
     (f) To get correct dimension V, do the steps that follow:
       1 If the shim (52) is installed, carefully remove it with a WEDGE - NON METALLIC. Discard the shim (52).
       2 Temporarily install the proximity sensor (59) with:
  • The screws (58)
  • The washers (63)
  • The nuts (64).
       3 Put the largest face of the X-setting shim (GS48363) on the proximity sensor (59). Hold the straps of the X-setting shim (GS48363) with the pliers.
       4 Align the proximity sensor (59) and the target (54) with the X-setting shim (GS48363).
       5 Use a GAGE - FEELER to measure the clearance between the proximity sensor (59) and the target (54).
       6 Measure the new AIPC 32-21-11-93-030 SHIM (52) or the new AIPC 32-21-11-13-030 SHIM (52) or the new AIPC 32-21-11-53-030 SHIM (52) and adjust it to the clearance value measured in step 5_.
       7 Remove the nuts (64), the washers (63), the screws (58) and the proximity sensor (59).
       8 Temporarily, install the proximity sensor (59) with the new shim (52), the screws (58), the washers (63) and the nuts (64).
       9 Put the GO face of the GO/NO GO gage (T47948) in the clearance between the proximity sensor (59) and the target (54).
       10 Put the NO GO face of the GO/NO GO gage (T47948) and make sure that:
  • It does not go in the clearance between the proximity sensor (59) and the target (54).
       11 Remove the X-setting shim (GS48363).
       12 Remove the nuts (64), the washers (63), the screws (58), the proximity sensor (59) and the shim (52).
       13 If the shim (52) was adjusted, do the procedure in para 4.F.
     (g) To get the correct dimension A, do the steps that follow:
       1 Temporarily install the proximity sensor (59) with:
  • The screws (58)
  • The new shim (52)
  • The washers (63)
  • The nuts (64).
       2 Put the largest face of the X-setting shim (GS48363) on the proximity sensor (59). Hold the straps of the X-setting shim (GS48363) with the pliers.
       3 Use a SCRAPER - NON METALLIC to remove the sealant from the nut (71), the lock washer (70) and the threaded end of the clevis (67).
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.
       4 Cut, remove and discard the lockwire from the nut (71).
       5 Unlock the lock washer (70).
       6 Remove the nut (71), the lock washer (70) and the clevis (67) from the support (69).
         a Do not disconnect the link from the clevis (67).
       7 If the shim(s) (68) is(are) installed, carefully remove it(them) with a WEDGE - NON METALLIC. Discard the shim(s) (68).
       8 Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the mating surfaces of:
  • The clevis (67)
  • The support (69).
       9 Put the clevis (67) onto the support (69) and temporarily install the nut (71).
       10 Turn the nut (71) and adjust the target (54) until it touches the smallest face of the X-setting shim (GS48363).
       11 Measure and record dimension A.
       12 Measure the new 32211190-250SHIM(S)68 or the new 32211110-070SHIM(S)68 or the new 32211150-250SHIM(S)68 and adjust it to get dimension A.
       13 Remove the X-setting shim (GS48363).
       14 Remove the nut (71) and the lock washer (70) from the clevis (67).
       15 Remove the clevis (67) from the support (69).
       16 If the shim(s) (68) is(are) adjusted, do the procedure in para 4.F.
       17 Install the clevis (67) onto the support (69) with:
  • The new shim(s) (68), if necessary
  • The lock washer (70)
  • The nut (71).
       18 Torque the nut (71) to between 16 and 13 m.N (141.59 and 115.04 lbf.in ) T.
       19 Safety the nut (71) with the lockwire (MS20995C32).
       20 Lock the lockwasher (70).
       21 Apply a layer of Polysulfide Sealant-Fuel Tank Quick Curing - (Material No.06ABF1) to:
  • The threaded end of the clevis (67)
  • The lock washer (70)
  • The nut (71).
       22 Remove the nuts (64), the washers (63), the screws (58), the proximity sensor (59) and the shim (52).
   (2) For system 2 (25GA), if dimension U1 or dimension V1 is incorrect, do the steps that follow:
     (a) Make sure that the target lever (41), the sensor mounting bracket (38) and the bracket (50) are in the correct condition.
     (b) Disconnect the electrical connector (47) from the proximity sensor (40).
     (c) Make sure that the electrical connector (47) is in the correct condition.
     (d) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
     (e) To get correct dimension U1, do the steps that follow:
NOTE: To get correct dimension U1, it is necessary to first adjust dimensions X1, W1 and V1.
       1 Use a SCRAPER - NON METALLIC to remove all the sealant from the items that follow:
  • The screws (43), (46) and (49)
  • The washers (44), (33) and (36)
  • The nuts (45), (34) and (37).
       2 Remove the nuts (45), the washers (44), the screws (43) and the target (42) from the target lever (41).
       3 Remove the nuts (34), the washers (33), the screws (46) and the proximity sensor (40) from the sensor mounting bracket (38).
       4 If the shim (39) is installed, do not remove it from the sensor mounting bracket (38).
       5 Remove the nuts (37), the washers (36), the screws (49) from the sensor mounting bracket (38).
       6 If the shim (35) is installed, carefully remove it with a WEDGE - NON METALLIC. Discard the shim (35).
       7 Put the Y-setting shim (GS48354) in position on the target lever (41) and the sensor mounting bracket (38) together with the shim (39).
       8 Attach the Y-setting shim (GS48354) with the two pins and the two screws to the target lever (41) and the sensor mounting bracket.
       9 Measure and record dimension B between the sensor mounting bracket (38) and the bracket (50).
       10 Measure the new AIPC 32-21-11-93-010 SHIM (35) or the new AIPC 32-21-11-13-010 SHIM (35) or the new AIPC 32-21-11-53-010 SHIM (35) and adjust it to dimension B.
       11 Remove the two screws, the two pins and the Y-setting shim (GS48354).
       12 If the shim (35) was adjusted, do the procedure in para 4.F.
     (f) To get correct dimension V1, do the steps that follow:
       1 If the shim (39) is installed, carefully remove it with a WEDGE - NON METALLIC. Discard the shim (39).
       2 Temporarily install the proximity sensor (40) with:
  • The screws (46)
  • The washers (33)
  • The nuts (34).
       3 Put the largest face of the X-setting shim (GS48363) on the proximity sensor (40). Hold the straps of the X-setting shim (GS48363) with the pliers.
       4 Align the proximity sensor (40) and the target (42) with the X-setting shim (GS48363).
       5 Use a GAGE - FEELER to measure the clearance between the proximity sensor (40) and the target (42).
       6 Measure the new AIPC 32-21-11-93-030 SHIM (39) or the new AIPC 32-21-11-13-030 SHIM (39) or the new AIPC 32-21-11-53-030 SHIM (39) and adjust it to the clearance value measured in step 5_.
       7 Remove the nuts (34), the washers (33), the screws (46) and the proximity sensor (40).
       8 Temporarily, install the proximity sensor (40) with the new shim (39), the screws (46), the washers (33) and the nuts (34).
       9 Put the GO face of the GO/NO GO gage (T47948) in the clearance between the proximity sensor (40) and the target (42).
       10 Put the NO GO face of the GO/NO GO gage (T47948) and make sure that:
  • It does not go in the clearance between the proximity sensor (40) and the target (42).
       11 Remove the X-setting shim (GS48363).
       12 Remove the nuts (34), the washers (33), the screws (46), the proximity sensor (40) and the shim (39).
       13 If the shim (39) was adjusted, do the procedure in para 4.F.
     (g) To get the correct dimension A, do the steps that follow:
       1 Temporarily install the proximity sensor (40) with:
  • The screws (46)
  • The new shim (39)
  • The washers (33)
  • The nuts (34).
       2 Put the largest face of the X-setting shim (GS48363) against the proximity sensor (40). Hold the straps of the X-setting shim (GS48363) with the pliers.
       3 Use a SCRAPER - NON METALLIC to remove the sealant from the nut (71), the lock washer (70) and the threaded end of the clevis (67).
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.
       4 Cut, remove and discard the lockwire from the nut (71).
       5 Unlock the lock washer (70).
       6 Remove the nut (71), the lock washer (70) and the clevis (67) from the support (69).
         a Do not disconnect the link from the clevis (67).
       7 If the shim(s) (68) is(are) installed, carefully remove them with a WEDGE - NON METALLIC. Discard the shim(s) (68).
       8 Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the mating surface of:
  • The clevis (67)
  • The support (69).
       9 Put the clevis (67) onto the support (69) and temporarily install the nut (71).
       10 Turn the nut (71) and adjust the target (54) until it touches the smallest face of the X-setting shim (GS48363).
       11 Measure and record dimension A.
       12 Measure the new 32211190-250SHIM(S)68 or the new 32211110-070SHIM(S)68 or the new 32211150-250SHIM(S)68 or and adjust it to dimension A.
       13 Remove the X-setting shim (GS48363).
       14 Remove the nut (71) and the lock washer (70) from the clevis (67).
       15 Remove the clevis (67) from the support (69).
       16 If the shim(s) (68) is(are) adjusted, do the procedure in para 4.F.
       17 Install the clevis (67) onto the support (69) with:
  • The new shim(s) (68), if necessary
  • The lock washer (70)
  • The nut (71).
       18 Torque the nut (71) to between 16 and 13 m.N (141.59 and 115.04 lbf.in ) T.
       19 Safety the nut (71) with the lockwire (MS20995C32).
       20 Lock the lock washer (70).
       21 Apply a layer of Polysulfide Sealant-Fuel Tank Quick Curing - (Material No.06ABF1) to:
  • The threaded end of the clevis (67)
  • The lock washer (70)
  • The nut (71).
       22 Remove the nuts (34), the washers (33), the screws (46), the proximity sensor (40) and the shim (39).
Subtask 32-31-73-916-051-A
F. Preparation of the Shims After Material Removal
   (1) Before installation of the shims (35), (39), (52), (65) or (68), do the steps that follow:
     (a) Clean the shims (35), (39), (52), (65) or (68) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
     (b) Flush the applicable shim(s) with cold water.
WARNING: DO NOT LET COMPRESSED GAS TOUCH YOUR SKIN. THE GAS CAN GO THROUGH THE SKIN AND MAKE BUBBLES IN THE BLOOD. THIS CONDITION CAN KILL YOU.
WARNING: WHEN YOU USE COMPRESSED AIR:
  • USE THE CORRECT PROTECTION (FACE SHIELD OR GOGGLES)
  • DO NOT POINT THE AIRFLOW AT YOURSELF OR OTHER PERSONS.
LOOSE PARTICLES AND/OR HIGH PRESSURE AIR CAN CAUSE INJURY.
     (c) Flush the applicable shim(s) with hot water and then dry with compressed air.
Subtask 32-31-73-410-063-A
G. Installation of the NLG Extension/Steering Proximity Sensors 24GA (25GA) After Adjustment
F Dimensional Check of NLG Extension/Steering Proximity Sensors 24GA, 25GA
F Component Breakdown-NLG Extension/Steering Proximity Sensors 24GA, 25GA
NOTE: You can install a sensor target without a spacer/shim if the correct clearance can be set without the spacer/shim.
   (1) For system 1 (24GA), if dimension U was adjusted:
     (a) Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the mating faces of:
  • The sensor mounting bracket (51)
  • The bracket (66).
NOTE: If the shim is to be installed, make sure that it is installed in the correct position.
     (b) Apply Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) to both sides of the shim (65).
     (c) If applicable, put the shim (65) in position on the bracket (66).
     (d) Align the sensor mounting bracket (51) with the shim (65) if applicable, and install with the bolts (48), the washers (62) and the nuts (61).
     (e) TORQUE the nuts (61) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T.
     (f) Install the target (54) with the bolts (55), the washers (56) and the nuts (57).
     (g) TORQUE the nuts (57) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T.
     (h) Remove the CAP - BLANKING from the applicable electrical connectors.
     (i) Connect the electrical connector (60) to the proximity sensor (59).
     (j) Apply a layer of Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) to the bolts (48) and (55), the washers (56) and (62) and the nuts (57) and (61).
   (2) For system 1 (24GA), if dimension V was adjusted:
     (a) Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the mating faces of:
  • The sensor mounting bracket (51)
  • The bracket (66).
NOTE: If the shim is to be installed, make sure that it is installed in the correct position.
     (b) If applicable, apply Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) to the shim (65).
     (c) Put the sensor mounting bracket (51) together with the shim (65) if applicable, in position on the bracket (66).
     (d) Install the sensor mounting bracket (51) together with the shim (65) if necessary, with the bolts (48), the washers (62) and the nuts (61).
     (e) TORQUE the nuts (61) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T.
NOTE: If the shim is to be installed, make sure that it is installed in the correct position.
     (f) If applicable, apply Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) to both sides of the shim (52).
     (g) If necessary, put the shim (52) in position on the sensor mounting bracket (51).
     (h) Install the shim (52) if necessary, and the sensor (59) with the bolts (58), the washers (63) and the nuts (64).
     (i) TORQUE the nuts (64) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T.
     (j) Install the target (54) with the bolts (55), the washers (56) and the nuts (57).
     (k) TORQUE the nuts (57) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T.
     (l) Remove the CAP - BLANKING from the applicable electrical connectors.
     (m) Connect the electrical connector (60) to the proximity sensor (59).
     (n) Apply a layer of Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) to the bolts (48), (55) and (58), the washers (56), (62) and (63) and the nuts (57), (61) and (64).
   (3) For system 2 (25GA), if dimension V1 was adjusted:
     (a) Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the mating faces of:
  • The sensor mounting bracket (38)
  • The bracket (50).
NOTE: If the shim is to be installed, make sure that it is installed in the correct position.
     (b) If applicable, apply Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) to the shim (35).
     (c) Put the sensor mounting bracket (38) together with the shim (35) if applicable, in position on the bracket (50).
     (d) Install the sensor mounting bracket (38) together with the shim (35) if installed, with the bolts (49), the washers (36) and the nuts (37).
     (e) TORQUE the nuts (37) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T.
NOTE: If the shim is to be installed, make sure that it is installed in the correct position.
     (f) If applicable, apply Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) to both sides of the shim (39).
     (g) If applicable, put the shim (39) in position on the sensor mounting bracket (38).
     (h) Install the shim (39) as necessary, and the sensor (40) with the bolts (46), the washers (33) and the nuts (34).
     (i) TORQUE the nuts (34) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T.
     (j) Install the target (42) with the bolts (43), the washers (44) and the nuts (45).
     (k) TORQUE the nuts (45) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T.
     (l) Remove the CAP - BLANKING from the applicable electrical connectors.
     (m) Connect the electrical connector (47) to the proximity sensor (40).
     (n) Apply a layer of Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) to the bolts (43), (46) and (49), the washers (33), (36) and (44) and the nuts (34), (37) and (45).
   (4) For system 2 (25GA), if dimension U1 was adjusted:
     (a) Use Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the mating faces of:
  • The sensor mounting bracket (38)
  • The bracket (50).
NOTE: If the shim is to be installed, make sure that it is installed in the correct position.
     (b) If applicable, apply Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) to both sides of the shim (35).
     (c) If applicable, put the shim (35) in position on the bracket (50).
     (d) Align the sensor mounting bracket (38) with the shim (35) if installed, and install with the bolts (49), the washers (36) and the nuts (37).
     (e) TORQUE the nuts (37) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T.
     (f) Install the target (42) with the bolts (43), the washers (44) and the nuts (45).
     (g) TORQUE the nuts (45) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in ) T.
     (h) Remove the blanking caps from the applicable electrical connectors.
     (i) Connect the electrical connector (47) to the proximity sensor (40).
     (j) Apply a layer of Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) to the bolts (43) and (49), the washers (36) and (44) and the nuts (37) and (45).
Subtask 32-31-73-860-066-A
H. Aircraft Maintenance Configuration
   (1) If you did the flight configuration precautions, put the aircraft back to the ground configuration (Ref. AMM TASK 32-00-00-860-002).
   (2) Connect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-002).
Subtask 32-31-73-865-080-A
I. Make sure that this(these) circuit breaker(s) is(are) closed:
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 32-31-73-710-051-A
J. Test of the Landing-Gear Proximity Sensors
   (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (2) Do a test of the landing-gear proximity sensors with the NLG extended:
     (a) Do a check of the LGCIU1 and LGCIU2 label 021 as follows:
       1 Get access to the parameter call-up menus (Ref. AMM TASK 31-36-00-740-008).
ACTION
RESULT
1.With the MCDU keyboard, on the AIDS PAR LAB CALL-UP page, enter the parameter labels with the alphanumeric keys:
NOTE: The format is EQ/SYS/LAB/SDI.

  • You can enter the equipment number (EQ) with two digits (6D) or three digits (06D). The format changes with the FDIMU or DMU configuration.
NOTE: You can enter the two parameter labels, left for LGCIU1 and right for LGCIU2, on the same page.

  • For the LGCIU1, enter
    06D/1/021/01 or
    6D/1/021/01.
If 24GA senses the weight-off-wheels condition, bit 12 in the DATABITS column shows 0.
  • For the LGCIU2, enter
    06D/2/021/10 or
    6D/2/021/10.
If 25GA senses the weight-off-wheels condition, bit 12 in the DATABITS column shows 0.
   (3) Do a test of the landing-gear proximity sensors with the NLG compressed as follows:
     (a) Lower the aircraft at the forward jacking point (Ref. AMM TASK 07-11-00-586-001).
     (b) Do a check of the LGCIU1 and LGCIU2 label 021 as follows:
       1 Get access to the parameter call-up menus (Ref. AMM TASK 31-36-00-740-008).
ACTION
RESULT
1.With the MCDU keyboard, on the AIDS PAR LAB CALL-UP page, enter the parameter labels with the alphanumeric keys:
NOTE: The format is EQ/SYS/LAB/SDI.

  • You can enter the equipment number (EQ) with two digits (6D) or three digits (06D). The format changes with the FDIMU or DMU configuration.
NOTE: You can enter the two parameter labels, left for LGCIU1 and right for LGCIU2, on the same page.

  • For the LGCIU1, enter
    06D/1/021/01 or
    6D/1/021/01.
If 24GA senses the weight-on-wheels condition, bit 12 in the DATABITS column shows 1.
  • For the LGCIU2, enter
    06D/2/021/10 or
    6D/2/021/10.
If 25GA senses the weight-on-wheels condition, bit 12 in the DATABITS column shows 1.
   (4) De-energize the aircraft circuits (Ref. AMM TASK 24-41-00-861-002).
5. Close-up
Subtask 32-31-73-410-061-A
A. Close Access
   (1) Remove the 98D32203502000 SAFETY PIN - NLG DOOR from each of the NLG doors.
   (2) Close the NLG doors (Ref. AMM TASK 32-22-00-410-001).
Subtask 32-31-73-942-062-A
B. Removal of Equipment
   (1) Remove the SAFETY BARRIER(S).
   (2) Remove the WARNING NOTICE(S).
   (3) Remove the access platform(s).
   (4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 00:46:03 UTC
"Aviabrain" 2025