Removal of the NLG Actuating Cylinder

TASK 32-31-22-000-001-A
Removal of the NLG Actuating Cylinder

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 FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: MAKE SURE THAT THE CONTROLS AGREE WITH THE POSITION OF THE ITEMS THEY OPERATE BEFORE YOU PRESSURIZE A HYDRAULIC SYSTEM. UNWANTED MOVEMENT OF HYDRAULICALLY OPERATED ITEMS CAN CAUSE SERIOUS INJURY AND/OR DAMAGE.

WARNING: PRESSURIZE ONLY THE HYDRAULIC SYSTEM(S) THAT IS (ARE) NECESSARY FOR THE TASK. ISOLATE THE OTHER HYDRAULIC SYSTEM(S) BEFORE YOU SUPPLY HYDRAULIC POWER TO THE AIRCRAFT.

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

FIN: 2527GM

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 2M (6 FT) - ADJUSTABLE
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	WARNING NOTICE(S)
98AMS172321002	1	ADAPTER-WRENCH
98AMS172321003	1	ADAPTER-WRENCH
98D32203503000	1	EXTRACTOR - NLG
98D32303000000	1	ADAPTER-WRENCH KIT
J47558	1	EXTRACTOR

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
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 32-22-00-010-001-A	Nose Gear Doors - Ground Doors Opening
Actuating Cylinder

3. Job Set-up
Subtask 32-31-22-860-050-A

A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the Green hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001)
(3) Depressurize the reservoir of the Green hydraulic system
(Ref. AMM TASK 29-14-00-614-001)

Subtask 32-31-22-010-050-A

B. Get Access
(1) Open the NLG doors (Ref. AMM TASK 32-22-00-010-001).
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the NLG actuator in zone 123.

Subtask 32-31-22-941-050-A

C. Safety Precautions
(1) In the cockpit, on the panel 400VU:

make sure that the landing-gear control lever is in the DOWN position
put the WARNING NOTICE(S) in position to tell persons not to operate this lever.

(2) Put the WARNING NOTICE(S) in position to tell persons not to 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 CONTAINER 5 L (1.32 USGAL) in position below the NLG actuating cylinder to collect the hydraulic fluid leakage.

4. Procedure
Subtask 32-31-22-020-050-A

A. Removal of the NLG Actuating Cylinder
(1) Disconnect the hydraulic lines (20) and (21) from the elbows (23) and (22).
(2) Put the PLUG-BLANKING in each disconnected line end.
(3) Remove and discard the cotter pin (14) remove the nut (13) and the washer (15).
(4) Remove the screw (19), the bushing (16) and the washer (18).
(5) Remove the stop ring (17).
(6) Disconnect the spherical end (12) of the actuating cylinder (8) from the hollow pin (11) with the J47558 EXTRACTOR.

NOTE: Do not remove the pin (11) from the nose gear leg.

(7) Unlock the nut (1) and remove it with the 98AMS172321003 ADAPTER-WRENCH or 98AMS172321002 ADAPTER-WRENCH.
(8) Remove and discard the lockwasher (2) and remove the washer (3).
(9) Remove the airframe attachment pin (10) from the upper link (7).
(10) Unlock the nut (4) and remove it with the 98D32303000000 ADAPTER-WRENCH KIT.
(11) Remove and discard the lockwasher (5) and remove the washer (6).
(12) Remove the sleeve (9) with the 98D32203503000 EXTRACTOR - NLG from the upper link (7).
(13) Release the actuating cylinder from its upper link.

[Rev.10 from 2021] 2026.04.01 03:58:31 UTC