Adjustment of the NLG doors

TASK 32-22-00-820-001-A
Adjustment of the NLG doors

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE LANDING GEAR ARE CLEAR.

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

1. Reason for the Job

NOTE: This task can help you to decrease the fuel consumption.

NOTE: Two persons with the applicable communication tool are necessary to do this procedure:

One in the cockpit, and
Other in the NLG bay.

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	1	GAGE - FEELER
No specific	AR	TIE WRAP(S)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in )
No specific	Torque wrench: range to between 0.33 and 0.27 m.daN (29.20 and 23.89 lbf.in )
No specific	Torque wrench: range to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in )
No specific	Torque wrench: range to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )
No specific	Torque wrench: range to between 1.4 and 1.2 m.daN (123.89 and 106.19 lbf.in )
No specific	Torque wrench: range to between 3 and 2.5 m.daN (22.12 and 18.44 lbf.ft )
98AMS172321000	1	ADAPTOR - WRENCH
98F32304000000	4	TARGET-FALSE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
32	LOCKWASHER	AIPC 32-22-01-01-100
35	LOCKWASHER	AIPC 32-22-01-01-100
45	LOCKWASHER	AIPC 32-22-01-01-100
29	LOCKWASHER	AIPC 32-22-01-01-195
25	COTTER PIN	AIPC 32-22-01-01-260
26	COTTER PIN	AIPC 32-22-01-01-260
38	WASHERS	AIPC 32-22-01-01-290
32	LOCKWASHER	AIPC 32-22-81-01-170
35	LOCKWASHER	AIPC 32-22-81-01-170
45	LOCKWASHER	AIPC 32-22-81-01-170
29	LOCKWASHER	AIPC 32-22-81-01-230
25	COTTER PIN	AIPC 32-22-81-01-300
26	COTTER PIN	AIPC 32-22-81-01-300
38	WASHERS	AIPC 32-22-81-01-380
6	COTTER PIN	AIPC 52-82-31-02-790
3	LOCKWASHER	AIPC 52-82-31-02-830

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 29-10-00-863-001-A	Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 29-23-00-864-001-A	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 32-00-00-081-001-A	Removal of the Safety Devices from the Landing Gears
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 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
TASK 32-22-00-010-001-A	Nose Gear Doors - Ground Doors Opening
TASK 32-22-00-220-001-A	Check of the NLG Doors Clearances and Mismatches
TASK 32-31-00-720-003-A	Functional Test of the Normal Extension and Retraction of the Nose Landing Gear
TASK 32-31-41-000-001-A	Removal of the NLG main door control rod
TASK 32-31-41-400-001-A	Installation of the NLG Main-Door Control-Rod
NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL
NLG - Leg Fairing Adjustment
NLG - Aft Door Adjustment
NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL
NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 32-22-00-860-052-A

A. Aircraft Maintenance Configuration
(1) Make sure that the safety devices are installed on the landing gears (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 the WARNING NOTICE(S) in position to tell persons not to operate the landing gears.

(3) On panel 110VU:

Make sure that the free-fall control handle is folded into the center console
Put the WARNING NOTICE(S) in position to tell persons not to operate the free-fall control handle.

(4) Open the NLG doors and the MLG doors (Ref. AMM TASK 32-22-00-010-001) (Ref. AMM TASK 32-12-00-010-001).
(5) Make sure that the safety devices are installed on the MLG doors (Ref. AMM TASK 32-00-00-481-002).
(6) Obey the flight configuration precautions (Ref. AMM TASK 32-00-00-860-001).
(7) Lift the aircraft at the forward jacking point (Ref. AMM TASK 07-11-00-581-003).
(8) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below zone 123.

Subtask 32-22-00-865-051-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34

4. Procedure
Subtask 32-22-00-020-050-A

A. Disconnection of the Rotating Rod of the Aft NLG Door

NLG - Aft Door Adjustment

NOTE: You must disconnect the rotating rod (5) to replace the lockwasher (3) before adjustment of the rotating rod (5).

(1) If you do the adjustment of the NLG doors after removal/installation of the aft NLG door:

Do not disconnect the rotating rod from the replaced aft NLG door.

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.

(2) Remove and discard the cotter pin (6).
(3) Remove the nut (7) and the washer (8).
(4) Remove the bolt (9) and disconnect the rotating rod from the aft NLG door.
(5) Disengage the tabs of the lockwasher (3) from the nut (2).
(6) Loosen the nut (2).
(7) Remove the rotating rod (5) from the universal joint (1) and discard the lockwasher (3).
(8) Install the rotating rod (5) with the nut (2) and the new AIPC 52-82-31-02-830 LOCKWASHER (3) on the universal joint (1).
(9) Turn the nut (4) until dimension N is approximately 209 mm (8.2284 in.).

Subtask 32-22-00-020-051-A

B. Remove the Rod of the Main Door Assy (Ref. AMM TASK 32-31-41-000-001)

Subtask 32-22-00-867-054-A

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE LANDING GEAR ARE CLEAR.

C. Retraction of the NLG

NOTE: Two persons with the applicable communication tool are necessary to do this procedure:

One in the cockpit, and
Other in the NLG bay.

(1) Remove the access platform(s).
(2) Use the TIE WRAP(S) to install the 98F32304000000 TARGET-FALSE on:

Left MLG extension proximity-sensors 21GA and 23GA
Right MLG extension proximity-sensors 20GA and 22GA.

(3) Remove the safety device from the NLG (Ref. AMM TASK 32-00-00-081-001).
(4) Pressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).
(5) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(6) On panel 400VU, set the landing gear control-lever (6GA) to the UP position.
(7) Make sure that the NLG doors are fully open and the NLG is retracted and uplocked.
(8) Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(9) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(10) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below zone 123.

Subtask 32-22-00-820-051-A ** ON A/C NOT FOR ALL

D. Adjustment of the Aft NLG Doors

NLG - Aft Door Adjustment ** ON A/C NOT FOR ALL

(1) If you do the adjustment of the NLG doors after removal/installation of the aft NLG door:

Do not adjust the replaced aft NLG door.

(2) Manually close the aft NLG door and connect the rotating rod (5) to the door.
(a) If necessary, loosen the nut (2) and turn the nut (4) to increase the length of the rotating rod (5).
(3) Install the bolt (9), the washer (8) and the nut (7).

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.

(4) TORQUE the nut (7) to between 0.33 and 0.27 m.daN (29.20 and 23.89 lbf.in )

and safety it with the new AIPC 52-82-31-02-790 COTTER PIN (6).
(5) Adjust the length of the rotating rod (5) as follows:
(a) Loosen the nut (2).
(b) Turn the nut (4) to make the door touch the rear stop.
(c) Turn the nut (4) 180 deg. to tighten the rotating rod (5).
(d) TORQUE the nut (2) to between 3 and 2.5 m.daN (22.12 and 18.44 lbf.ft )

with the 98AMS172321000 ADAPTOR - WRENCH.
(e) Safety the nut (2) with the new AIPC 52-82-31-02-830 LOCKWASHER (3).

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) Safety the nut (4) with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

Subtask 32-22-00-820-051-B ** ON A/C NOT FOR ALL

D. Adjustment of the Aft NLG Doors

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

NLG - Aft Door Adjustment ** ON A/C NOT FOR ALL

(1) If you do the adjustment of the NLG doors after removal/installation of the aft NLG door:

Do not adjust the replaced aft NLG door.

(2) Manually close and hold the aft NLG door until it touches the adjustable stop (12).
(3) Adjust the length of the adjustable stop (12) to get mismatch A to between -2 mm (-0.08 in.) and +1 mm (0.04 in.):
(a) Remove the lockwire from the nut (11) of the adjustable stop (12).
(b) Loosen the nut (11).
(c) Turn the adjustable stop (12).
(d) Tighten and safety the nut (11) with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(4) Connect the rotating rod (5).
(a) If necessary, loosen the nut (2) and turn the nut (4) to increase or decrease the length of the rotating rod (5).
(5) Install the bolt (9), washer (8) and nut (7).

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.

(6) TORQUE the nut (7) to between 0.33 and 0.27 m.daN (29.20 and 23.89 lbf.in )

and safety it with the new AIPC 52-82-31-02-790 COTTER PIN (6).
(7) Adjust the length of the rotating rod (5) as follows:
(a) Loosen the nut (2) .
(b) Turn the nut (4) to make sure that the NLG door touches the adjustable stop (12).
(c) Turn the nut (4) by 180 degrees to tighten the rotating rod (5).
(d) TORQUE the nut (2) to between 3 and 2.5 m.daN (22.12 and 18.44 lbf.ft )

with the 98AMS172321000 ADAPTOR - WRENCH.
(e) Safety the nut (2) with the new AIPC 52-82-31-02-830 LOCKWASHER (3).
(f) Safety the nut (4) with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

Subtask 32-22-00-820-057-A ** ON A/C NOT FOR ALL

E. Adjustment of the Adjustable Stop of the Forward NLG doors

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

(1) Manually close and hold the forward NLG door until it touches the adjustable stop (14). During this step, make sure that the forward NLG door does not touch the leg door roller.
(2) Adjust the length of the adjustable stop (14) to get mismatch B to between -1 mm (-0.04 in.) and +1.4 mm (0.06 in.).

(a) Remove and discard the lockwire from the nut (13).
(b) Loosen the nut (13).
(c) Turn the adjustable stop (14).
(d) Tighten and safety the nut (13) with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

Subtask 32-22-00-820-052-A

F. Remove the lockwashers (35), (29), (32) and (45).

NLG - Leg Fairing Adjustment

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) Remove and discard the cotter pin (25).
(2) Remove the nut (24), the washer (23) and the screw (22).
(3) Remove and discard the cotter pin (26).
(4) Remove the nut (27), the washer (28), the bolt (40) and the washers (38).
(5) Disconnect the rod ends (34) and (37) from the NLG leg.
(6) Measure and record dimensions M and N to help the adjustment.
(7) Loosen the nut (33), remove the rod end (34), remove and discard the lockwasher (32).
(8) Loosen the nut (30), remove the nut (31), remove and discard the lockwasher (29).
(9) Install the new AIPC 32-22-01-01-195 LOCKWASHER (29) or AIPC 32-22-81-01-230 LOCKWASHER (29) and tighten the nut (31).
(10) Install the new AIPC 32-22-01-01-100 LOCKWASHER (32) or AIPC 32-22-81-01-170 LOCKWASHER (32). Tighten the rod end (34) and adjust it approximately to dimension N recorded before.
(11) Do not tighten and safety the nuts (30) and (33) at this step.
(12) Loosen the nut (36), remove the rod end (37), remove and discard the lockwasher (35).
(13) Install the new AIPC 32-22-01-01-100 LOCKWASHER (35) or AIPC 32-22-81-01-170 LOCKWASHER (35). Tighten the rod end (37) and adjust it approximately to dimension M recorded before.
(14) Do not tighten and safety the nut (36) at this step.
(15) Connect the rod ends (34) and (37) to the NLG leg.
(16) Make sure that the bush (39) is in position. Install the washers (38), the bolt (40), the washer (28) and the nut (27).
(17) Install the screw (22), the washer (23) and the nut (24).
(18) Do not tighten and safety the nuts (24) and (27) at this step.
(19) Remove the nut (51) and the bolt (48).
(20) Disconnect the rod end (47) from the NLG leg door.
(21) Measure and record dimension L to help the adjustment.
(22) Loosen the nut (46), remove the rod end (47), remove and discard the lockwasher (45).
(23) Install the new AIPC 32-22-01-01-100 LOCKWASHER (45) or AIPC 32-22-81-01-170 LOCKWASHER (45). Tighten the rod end (47) and adjust it approximately to dimension L recorded before.
(24) Do not tighten and safety the nut (46) at this step.
(25) Connect the rod end (47) to the leg door of the nose landing gear.
(26) Make sure that the bushes (49) and (50) and the rod (43) are in position. Install the bolt (48) and the nut (51).
(27) Do not tighten and safety the nut (51) at this step.

Subtask 32-22-00-820-053-A ** ON A/C NOT FOR ALL

G. Adjustment of the Lateral Clearance of the Leg Door

NLG - Leg Fairing Adjustment ** ON A/C NOT FOR ALL

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

(1) Manually close the forward NLG doors until they touch the forward stops.
(2) Use the GAGE - FEELER to measure clearance U.
(3) Manually open the forward NLG doors.
(4) Adjust transversal clearance U to between 8.5 mm (0.3346 in.) and 11.5 mm (0.4528 in.) with the washer (38) as follows:
(a) Remove the nut (27) and the washer (28).
(b) Remove the bolt (40) and the washer (38).
(c) Find the correct number of washer(s) (38) to get clearance U (washer thickness 0.5 mm (0.0197 in.)).
(d) Install the AIPC 32-22-01-01-290 WASHERS (38), the bolt (40), the washer (28) and the nut (27). Do not fully tighten the nut (27) at this step.
(5) Use the nut (31) to adjust the leg door until it is parallel to the forward NLG doors as follows:
(a) Manually close one forward NLG door until it touches the forward stop.
(b) Turn the nut (31) to adjust and make sure that the leg door is parallel to the forward NLG doors.
(c) Manually open the forward NLG door.
(d) Tighten the nut (33) but do not fully tighten it at this step.
(6) Manually close the forward NLG doors until they touch the forward stops.
(7) Use the GAGE - FEELER to measure clearances U, R and V. Make sure that:

Clearance U is between 8.5 mm (0.3346 in.) and 11.5 mm (0.4528 in.).
Clearance R is between 2.5 mm (0.0984 in.) and 5.5 mm (0.2165 in.).
Clearance V is between 5.5 mm (0.2165 in.) and 8.5 mm (0.3346 in.).

(8) Manually open the forward NLG doors.
(9) If necessary, do the adjustment of the lateral clearance again.

Subtask 32-22-00-820-053-B ** ON A/C NOT FOR ALL

G. Adjustment of the Lateral Clearance of the Leg Door

NLG - Leg Fairing Adjustment ** ON A/C NOT FOR ALL

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

(1) Manually close the forward NLG doors until they touch the forward stops.
(2) Use the GAGE - FEELER to measure clearance U.
(3) Manually open the forward NLG doors.
(4) Adjust transversal clearance U to between 0 mm (0.0000 in.) and 3 mm (0.1181 in.) with the washer (38) as follows:
(a) Remove the nut (27) and the washer (28).
(b) Remove the bolt (40) and the washer (38).
(c) Find the correct number of washer(s) (38) to get clearance U (washer thickness 0.5 mm (0.0197 in.)).
(d) Install the new AIPC 32-22-01-01-290 WASHERS (38) or the new AIPC 32-22-81-01-380 WASHERS (38), the bolt (40), the washer (28) and the nut (27). Do not fully tighten the nut (27) at this step.
(5) Use the nut (31) to adjust the leg door until it is parallel to the forward NLG doors as follows:
(a) Manually close one forward NLG door until it touches the forward stop.
(b) Turn the nut (31) to adjust and make sure that the leg door is parallel to the forward NLG doors.
(c) Manually open the forward NLG door.
(d) Tighten the nut (33) but do not fully tighten it at this step.
(6) Manually close the forward NLG doors until they touch the forward stops.
(7) Use the GAGE - FEELER to measure clearances U, R and V. Make sure that:

Clearance U is between 0 mm (0.0000 in.) and 3 mm (0.1181 in.).
Clearance R is between 2.5 mm (0.0984 in.) and 5.5 mm (0.2165 in.).
Clearance V is between 5.5 mm (0.2165 in.) and 8.5 mm (0.3346 in.).

(8) Manually open the forward NLG doors.
(9) If necessary, do the adjustment of the lateral clearance again.

Subtask 32-22-00-820-054-A

H. Adjustment of the Clearance Q between the Leg Door Roller and the Stop with the Rod Ends (34) and (37)

NLG - Leg Fairing Adjustment

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

(1) Manually close the forward NLG doors until they touch the forward stops.
(2) Use the GAGE - FEELER to measure clearance Q.
(3) Manually open the forward NLG doors.
(4) Adjust clearance Q to between 0.83 mm (0.0327 in.) and 2.83 mm (0.1114 in.) as follows:
(a) Remove the nut (24), the washer (23) and the screw (22).
(b) Remove the nut (27), the washer (28), the bolt (40) and the washers (38).
(c) Disconnect the rod ends (34) and (37) from the NLG leg.
(d) Adjust symmetrically the rod ends (34) and (37) to get clearance Q between 0.83 mm (0.0327 in.) and 2.83 mm (0.1114 in.).
(e) Tighten the nuts (33) and (36) but do not fully tighten and safety them at this step.
(f) Connect the rod ends (34) and (37) to the NLG leg.
(g) Make sure that the bush (39) is in position, install the washers (38), the bolt (40), the washer (28) and the nut (27).
(h) Install the screw (22), the washer (23) and the nut (24).
(i) Tighten the nuts (24) and (27) but do not fully tighten and safety them at this step.
(j) Manually close the forward NLG doors until they touch the forward stops.
(k) Use the GAGE - FEELER to measure clearance Q. Make sure that clearance Q is between 0.83 mm (0.0327 in.) and 2.83 mm (0.1114 in.).
(l) Manually open the forward NLG doors.
(m) If necessary, do the adjustment again.

Subtask 32-22-00-820-055-A

I. Adjust the mismatch at rear of the leg door with the rod end (47).

NLG - Leg Fairing Adjustment

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

(1) Remove the nut (51) and the bolt (48).
(2) Disconnect the rod end (47) from the leg door of the nose landing gear.
(3) Adjust the rod end (47) to get the dimension X = 0 plus or minus 1 mm (0.0394 in.).

NOTE: One turn of the rod end (47) causes a 1 mm movement of the door.

(4) Tighten the nut (46) but do not TORQUE and safety it at this time.
(5) Connect the rod end (47) to the leg door of the nose landing gear.
(6) Make sure that the bushes (49), (50) and the rod (43) are in position, install the bolt (48) and the nut (51).
(7) Tighten the nut (51) but do not TORQUE and safety it at this time.
(8) Make sure that the dimension X is equal to 0 plus or minus 1 mm (0.0394 in.).
(9) Do again the adjustment if necessary.

Subtask 32-22-00-820-056-A ** ON A/C NOT FOR ALL

J. Adjustment of the Longitudinal Clearances of the Leg Door

NLG - Leg Fairing Adjustment ** ON A/C NOT FOR ALL

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

(1) Adjust clearance P to between 7 mm (0.2756 in.) and 9 mm (0.3543 in.) with the rod (43).

(a) Cut and remove the lockwire and loosen the nuts (41).
(b) Loosen the lockwashers (42) and turn the rod (43) to adjust clearance P to between 7 mm (0.2756 in.) and 9 mm (0.3543 in.).
(c) Do not tighten and safety the nuts (41) at this step.
(2) Manually close the forward NLG doors until they touch the forward stops.
(3) Use the GAGE - FEELER to measure clearances T and W. Make sure that:

Clearance T is between 4 mm (0.1575 in.) and 6 mm (0.2362 in.).
Clearance W is between 7.5 mm (0.2953 in.) and 10.5 mm (0.4134 in.).

(4) Manually open the forward NLG doors.
(5) If necessary, do the adjustment again.

Subtask 32-22-00-820-056-B ** ON A/C NOT FOR ALL

J. Adjustment of the Longitudinal Clearances of the Leg Door

NLG - Leg Fairing Adjustment ** ON A/C NOT FOR ALL

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

(1) Adjust clearance P to between 7 mm (0.2756 in.) and 9 mm (0.3543 in.) with the rod (43).

Clearance T is between 4 mm (0.1575 in.) and 6 mm (0.2362 in.).
Clearance W is between 0 mm (0.0000 in.) and 3 mm (0.1181 in.).

(4) Manually open the forward NLG doors.
(5) If necessary, do the adjustment again.

Subtask 32-22-00-220-052-A ** ON A/C NOT FOR ALL

K. Check of the NLG Doors Clearances and Mismatches

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

(1) Manually close the forward NLG doors until they touch the forward stops.
(2) Use the GAGE - FEELER to measure clearances P, Q, R, S, T, U, V, W and mismatch X. Make sure that:

Clearance P is between 7 mm (0.2756 in.) and 9 mm (0.3543 in.).
Clearance Q is between 0.83 mm (0.0327 in.) and 2.83 mm (0.1114 in.).
Clearance R is between 2.5 mm (0.0984 in.) and 5.5 mm (0.2165 in.).
Clearance S is between 0 mm (0.0000 in.) and 1.4 mm (0.0551 in.).
Clearance T is between 4 mm (0.1575 in.) and 6 mm (0.2362 in.).
Clearance U is between 8.5 mm (0.3346 in.) and 11.5 mm (0.4528 in.).
Clearance V is between 5.5 mm (0.2165 in.) and 8.5 mm (0.3346 in.).
Clearance W is between 7.5 mm (0.2953 in.) and 10.5 mm (0.4134 in.).
Mismatch dimension X is equal to 0 plus or minus 1 mm (0.0394 in.).

(3) Manually open the forward NLG doors.
(4) If necessary, do the adjustment again.

Subtask 32-22-00-220-052-B ** ON A/C NOT FOR ALL

K. Check of the NLG Doors Clearances and Mismatches

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

(1) Manually close the forward NLG doors until they touch the forward stops.
(2) Use the GAGE - FEELER to measure clearances P, Q, R, S, T, U, V, W and mismatch X. Make sure that:

Clearance P is between 7 mm (0.2756 in.) and 9 mm (0.3543 in.).
Clearance Q is between 0.83 mm (0.0327 in.) and 2.83 mm (0.1114 in.).
Clearance R is between 2.5 mm (0.0984 in.) and 5.5 mm (0.2165 in.).
Clearance S is between 0 mm (0.0000 in.) and 1.4 mm (0.0551 in.).
Clearance T is between 4 mm (0.1575 in.) and 6 mm (0.2362 in.).
Clearance U is between 0 mm (0.0000 in.) and 3 mm (0.1181 in.).
Clearance V is between 5.5 mm (0.2165 in.) and 8.5 mm (0.3346 in.).
Clearance W is between 0 mm (0.0000 in.) and 3 mm (0.1181 in.).
Mismatch dimension X is equal to 0 plus or minus 1 mm (0.0394 in.).

(3) Manually open the forward NLG doors.
(4) If necessary, do the adjustment again.

Subtask 32-22-00-220-052-C ** ON A/C NOT FOR ALL

K. Check of the NLG Doors Clearances and Mismatches

NLG Doors - Clearances and Mismatches ** ON A/C NOT FOR ALL

(1) Manually close the forward NLG doors until they touch the forward stops.
(2) Use the GAGE - FEELER to measure clearances P, Q, R, S, T, U, V, W and mismatches X, A and B. Make sure that:

Clearance P is between 7 mm (0.2756 in.) and 9 mm (0.3543 in.).
Clearance Q is between 0.83 mm (0.0327 in.) and 2.83 mm (0.1114 in.).
Clearance R is between 2.5 mm (0.0984 in.) and 5.5 mm (0.2165 in.).
Clearance S is between 0 mm (0.0000 in.) and 1.4 mm (0.0551 in.).
Clearance T is between 4 mm (0.1575 in.) and 6 mm (0.2362 in.).
Clearance U is between 0 mm (0.0000 in.) and 3 mm (0.1181 in.).
Clearance V is between 5.5 mm (0.2165 in.) and 8.5 mm (0.3346 in.).
Clearance W is between 0 mm (0.0000 in.) and 3 mm (0.1181 in.).
Mismatch dimension X is between -1 mm (-0.0394 in.) and +1 mm (0.0394 in.).
Mismatch dimension A is between -2 mm (-0.0787 in.) and +1 mm (0.0394 in.).
Mismatch dimension B is between -1 mm (-0.0394 in.) and +1.4 mm (0.0551 in.).

(3) Manually open the forward NLG doors.
(4) If necessary, do the adjustment again.

Subtask 32-22-00-867-055-A

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE LANDING GEAR ARE CLEAR.

L. Extension of the NLG

NOTE: Two persons with the applicable communication tool are necessary to do this procedure:

One in the cockpit, and
Other in the NLG bay.

(1) Remove the access platform(s).
(2) Make sure that the travel range of the NLG is clear.
(3) Pressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).
(4) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(5) On panel 400VU, put the landing gear control-lever (6GA) in the DOWN position.
(6) On the aircraft, make sure that the NLG is extended and downlocked.
(7) Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(8) Install the safety device on the NLG (Ref. AMM TASK 32-00-00-481-001).

Subtask 32-22-00-420-050-A

M. Installation of the rod of the Main Door assy (Ref. AMM TASK 32-31-41-400-001)

Subtask 32-22-00-220-053-A

N. Check of the Main Doors Gaps and Mismatches on the NLG (Ref. AMM TASK 32-22-00-220-001).

Subtask 32-22-00-420-051-A

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.

O. Tighten the nuts.

NLG - Leg Fairing Adjustment

(1) TORQUE the nut (51) to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in )

.
(2) TORQUE the nut (46) to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )

and safety it with the lockwasher (45).

(3) TORQUE the nuts (41) to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )

and safety them with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(4) TORQUE the nut (24) to between 0.35 and 0.25 m.daN (30.97 and 22.12 lbf.in )

and safety it with the new AIPC 32-22-01-01-260 COTTER PIN (25) or AIPC 32-22-81-01-300 COTTER PIN (25).
(5) TORQUE the nut (27) to between 1.4 and 1.2 m.daN (123.89 and 106.19 lbf.in )

and safety it with the new AIPC 32-22-01-01-260 COTTER PIN (26) or AIPC 32-22-81-01-300 COTTER PIN (26).
(6) TORQUE the nut (36) to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )

and safety it with the lockwasher (35).
(7) TORQUE the nut (33) to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )

and safety it with the lockwasher (32).
(8) TORQUE the nut (30) to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )

and safety it with the lockwasher (29).

Subtask 32-22-00-720-050-A

P. Test
(1) Make sure that the travel ranges of the landing gear and doors are clear.
(2) Do the functional test of the normal extension and retraction of the nose landing gear (Ref. AMM TASK 32-31-00-720-003).

5. Close-up
Subtask 32-22-00-860-054-A

A. Put the aircraft back to its initial configuration.
(1) Remove and discard the TIE WRAP(S).
(2) Remove the 98F32304000000 TARGET-FALSE from:

Left MLG extension proximity-sensors 21GA and 23GA
Right MLG extension proximity-sensors 20GA and 22GA.

(3) Make sure that the safety device is installed on the NLG (Ref. AMM TASK 32-00-00-481-001).
(4) Lower the aircraft off the jack at the forward jacking point (Ref. AMM TASK 07-11-00-586-001).
(5) Put the aircraft back to the ground configuration (Ref. AMM TASK 32-00-00-860-002).
(6) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
(7) Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(8) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(9) Make sure that the work area is clean and clear of tools and other items.
(10) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 12:30:43 UTC