Removal of the NLG Drag-Strut Assy

TASK 32-21-16-000-002-A
Removal of the NLG Drag-Strut Assy

ZONE: 711
FIN: 2528GM

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	BLOCK-INCLINED
No specific	1	HOIST 500 KG (1100 LB)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	SCRAPER
No specific	AR	WARNING NOTICE(S)
98D32203500000	1	TOOL-R I NLG
J47555	1	EXTRACTOR
J47562-1000	1	EXTRACTOR
M21931	1	HOISTING DEVICE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
711	NOSE GEAR

C. 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 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
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 32-21-17-000-001-A	Removal of the NLG Lockstay Assy
TASK 32-22-00-010-001-A	Nose Gear Doors - Ground Doors Opening
Roller
Lower connection of the NLG Drag-Strut Assy
Upper connections

3. Job Set-up
Subtask 32-21-16-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the Green hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001)
(2) Depressurize the reservoir of the Green hydraulic system
(Ref. AMM TASK 29-14-00-614-001)
(3) Lift the aircraft with jacks (Ref. AMM TASK 07-11-00-581-003).

Subtask 32-21-16-941-057-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) In the cockpit, on the panel 400VU put WARNING NOTICE(S) in position to tell persons not to operate the landing gear control lever.
(2) Put the WARNING NOTICE(S) in position to tell persons not pressurize the Green hydraulic system:

on the panel 40VU in the cockpit,
on the ground service panel of the Green hydraulic system, access door (197CB).

(3) Put the SAFETY BARRIER(S) in position.
(4) Obey the applicable safety precautions before you open the LGCIU circuits breakers (Ref. AMM TASK 32-00-00-860-001).

Subtask 32-21-16-860-050-B ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001)
(2) Depressurize the reservoir of the Yellow hydraulic system.
(Ref. AMM TASK 29-14-00-614-001)
(3) Lift the aircraft with jacks (Ref. AMM TASK 07-11-00-581-003).

Subtask 32-21-16-941-057-B ** ON A/C NOT FOR ALL

D. Safety Precautions
(1) In the cockpit, on the panel 400VU put WARNING NOTICE(S) in position to tell persons not to operate the landing gear control lever.
(2) Put the WARNING NOTICE(S) in position to tell persons not pressurize the Yellow hydraulic system:

on the panel 40VU in the cockpit,
on the ground service panel of the Yellow hydraulic system, access door (196BB).

(3) Put the SAFETY BARRIER(S) in position.
(4) Obey the applicable safety precautions before you open the LGCIU circuits breakers (Ref. AMM TASK 32-00-00-860-001).

Subtask 32-21-16-865-056-A

E. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY	4GG	M36
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/CTL	3GG	M35
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/CTL	1GG	M34
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY	2GG	M33
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34

Subtask 32-21-16-010-051-A

F. Get Access
(1) Open the doors of the nose landing gear (Ref. AMM TASK 32-22-00-010-001).
(2) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position in zone 123.

Subtask 32-21-16-970-051-A

G. Recording of Clearances

Roller

(1) Measure and record dimension K.

4. Procedure
Subtask 32-21-16-020-055-A

A. Removal of the NLG Drag Strut Assy
(1) Use a SCRAPER to remove the protective sealant from the parts to be removed.
(2) Remove the lock-stay assy (Ref. AMM TASK 32-21-17-000-001).
(3) Install the attach bar of the 98D32203500000 TOOL-R I NLG.
(4) Install the M21931 HOISTING DEVICE and attach a HOIST 500 KG (1100 LB).
(5) Remove the drag strut as follows:
(a) Remove and discard the cotter pin (4), remove the nut (3), the washer (2) and the bolt (6).
(b) Remove the ring (5).

CAUTION: PUSH THE NOSE GEAR LEG TO THE FRONT TO PREVENT DAMAGE TO THE ROTATING CONTROL RODS OF THE REAR NOSE LANDING GEAR DOORS.

(c) Remove the pin (1) with the J47555 EXTRACTOR.
(d) Put a BLOCK-INCLINED below the nose landing gear wheels to keep the nose landing gear leg in position.
(e) Remove and discard the cotter pins (18), remove the nuts (17) and the washers (16).
(f) Remove the bolts (13).
(g) Remove the lubrication inserts (11), the bushes (10) and the trunnion pins (15) with the J47562-1000 EXTRACTOR.
(h) Remove the washers (21).
(i) Release the drag strut (7) from the spherical bearings and remove it.
(6) Remove the M21931 HOISTING DEVICE.

[Rev.10 from 2021] 2026.04.01 00:42:13 UTC