Functional Test of the MLG Lockstay Actuating Cylinder with Brace Tool Installed

TASK 32-31-00-720-007-A
Functional Test of the MLG Lockstay Actuating Cylinder with Brace Tool Installed

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.

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	SAFETY BARRIER(S)
No specific	AR	TIE WRAP(S)
No specific	AR	WARNING NOTICE(S)
98F32304000000	6	TARGET-FALSE

B. Referenced Information

REFERENCE	DESIGNATION
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 29-24-00-863-001-A	Pressurize the Yellow Hydraulic System with the Electric Pump
TASK 29-24-00-864-001-A	Depressurize the Yellow Hydraulic System
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 32-00-00-080-001-A	Removal of the Brace Tool from the Lockstay Actuator
TASK 32-00-00-081-001-A	Removal of the Safety Devices from the Landing Gears
TASK 32-00-00-480-001-A	Installation of the Brace Tool on the Lockstay Actuator
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 32-22-00-410-001-A	Nose Gear Doors - Ground Doors Closing

3. Job Set-up
Subtask 32-31-00-941-092-A

A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) On the panel 400VU:

make sure that the landing-gear control lever 6GA is in the DOWN position
make sure that a WARNING NOTICE(S) is in position to tell persons not to operate the landing gear.

(3) On the panel 110VU, make sure that the GRAVITY GEAR EXTN handle is folded into the center console.
(4) Make sure that a WARNING NOTICE(S) is adjacent to the MLG to tell persons to keep clear.

Subtask 32-31-00-010-082-A

B. Get Access
(1) Open the MLG doors (Ref. AMM TASK 32-12-00-010-001).
(2) Open the NLG doors (Ref. AMM TASK 32-22-00-010-001).
(3) Make sure that the ground safety locks are installed on:

the landing gear (Ref. AMM TASK 32-00-00-481-001)
the landing gear doors (Ref. AMM TASK 32-00-00-481-002).

Subtask 32-31-00-869-115-A

C. Flight Configuration Precautions
(1) Do the flight configuration precautions (Ref. AMM TASK 32-00-00-860-001).

Subtask 32-31-00-865-118-A

D. 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
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
121VU	LGCIU/BAT SPLY/SYS1	58GA	R32
** ON A/C ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32
121VU	LGCIU/BAT SPLY/SYS1	58GA	R31

Subtask 32-31-00-860-109-A

E. Aircraft Maintenance Configuration
(1) Install the brace tool on the applicable MLG lockstay actuating-cylinder (Ref. AMM TASK 32-00-00-480-001).
(2) Use the TIE WRAP(S) to install the 98F32304000000 TARGET-FALSE on:

NLG extension proximity-sensors 24GA and 25GA
Left MLG extension proximity-sensors 21GA and 23GA
Right MLG extension proximity-sensors 20GA and 22GA.

Subtask 32-31-00-865-138-A

F. Table of the circuit breakers used in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	PTU INHIT/Y SYS	1808GL	Q33
121VU	PTU INHIT/G SYS	1807GL	Q32
** ON A/C ALL
121VU	HYDRAULIC/SOL VALVES/G/Y/PTU	1801GL	N34

Subtask 32-31-00-860-120-A ** ON A/C NOT FOR ALL

G. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

NOTE: You can energize the aircraft electrical circuits from an external source or the aircraft APU as necessary.

(2) Pressurize the Green hydraulic system with one of the two hydraulic supplies that follow:
(a) Pressurize the Green hydraulic system with the ground hydraulic supply (Ref. AMM TASK 29-10-00-863-001).
(b) Pressurize the Green hydraulic system with the Yellow hydraulic system (through the PTU) (Ref. AMM TASK 29-24-00-863-001).
(3) Set ADIRU 1 or 3 to ON.
(4) On panel 41VU, set the applicable IR1 or IR3 selector switch to the ATT position.
(5) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).

Subtask 32-31-00-860-120-B ** ON A/C NOT FOR ALL

G. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

NOTE: You can energize the aircraft electrical circuits from an external source or the aircraft APU as necessary.

(2) Pressurize the Green hydraulic system with one of the two hydraulic supplies that follow:
(a) Pressurize the Green hydraulic system with a ground hydraulic supply (Ref. AMM TASK 29-10-00-863-001).
(b) Pressurize the Green hydraulic system with the Yellow hydraulic system:
1 Open this(these) circuit breaker(s):

1801GL
1807GL
1808GL.

2 Close this(these) circuit breaker(s):

1801GL
1807GL
1808GL.

3 Pressurize the Green hydraulic system with the Yellow hydraulic system (through the PTU) (Ref. AMM TASK 29-24-00-863-001).
(3) Set ADIRU 1 or 3 to ON.
(4) On panel 41VU, set the applicable IR1 or IR3 selector switch to the ATT position.
(5) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).

Subtask 32-31-00-865-133-A

H. 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
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
121VU	LGCIU/BAT SPLY/SYS1	58GA	R32
** ON A/C ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32
121VU	LGCIU/BAT SPLY/SYS1	58GA	R31

Subtask 32-31-00-081-055-A

I. Removal of the Safety Devices
(1) Remove the GROUND LOCK SLEEVE from the applicable MLG lockstay actuator (Ref. AMM TASK 32-00-00-081-001).

4. Procedure
Subtask 32-31-00-720-075-A

A. Functional Test of the MLG Lockstay Actuating Cylinder with Brace Tool Installed
(1) Do this test:

ACTION	RESULT
1.On the panel 400VU: move the landing-gear control-lever 6GA to the UP position.	On the aircraft: monitor the movement of the actuator as it retracts, the movement must be free and smooth.
2.On the panel 400VU: move the landing-gear control-lever 6GA to the DOWN position.	On the aircraft: monitor the movement of the actuator as it extends, the movement must be free and smooth.
3.Do the test procedure three times. This is to make sure that the actuator movement is the same each time.

5. Close-up
Subtask 32-31-00-860-110-A

A. Aircraft Maintenance Configuration
(1) Depressurize the Green hydraulic system with one of the two procedures that follow:
(a) Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001).
(b) Depressurize the Green hydraulic system with the Yellow hydraulic system (through the PTU) (Ref. AMM TASK 29-24-00-864-001).
(2) Remove and discard the TIE WRAP(S).
(3) Remove the 98F32304000000 TARGET-FALSE from:

NLG extension proximity-sensors 24GA and 25GA
Left MLG extension proximity-sensors 21GA and 23GA
Right MLG extension proximity-sensors 20GA and 22GA.

(4) Remove the brace tool from the applicable MLG lockstay actuating-cylinder (Ref. AMM TASK 32-00-00-080-001).
(5) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(6) Set ADIRU 1 or 3 to OFF.
(7) On panel 41VU, set the applicable IR1 or IR3 selector switch to the OFF position.
(8) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 32-31-00-410-076-A

B. Close Access
(1) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
(2) Remove the D23080000 PIN-GROUND LOCK,NLG.
(3) Close the NLG doors (Ref. AMM TASK 32-22-00-410-001).

Subtask 32-31-00-869-116-A

C. Ground Configuration after Flight Configuration Precautions
(1) Do the ground configuration after flight configuration precautions (Ref. AMM TASK 32-00-00-860-002).

Subtask 32-31-00-942-095-A

D. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the SAFETY BARRIER(S).
(3) Remove the WARNING NOTICE(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 00:44:10 UTC