Change of the Hydraulic Fluid of the Blue Hydraulic System with the Tool - Hydraulic Fluid Change (DH0501)

TASK 12-36-29-600-009-A
Change of the Hydraulic Fluid of the Blue Hydraulic System with the Tool - Hydraulic Fluid Change (DH0501)

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: 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: OBEY THE HYDRAULIC SAFETY PROCEDURES.

WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:

FLUSH IT AWAY WITH CLEAN WATER
GET MEDICAL AID.

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

1. Reason for the Job
To change the type of hydraulic fluid or to change the hydraulic fluid if the contamination is out of tolerance.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	1	GROUND POWER CART - HYDRAULIC, RESERVOIR MIN. 150 L
No specific	1	PLUG - BLANKING
No specific	1	PLUG - BLANKING (E0052R8B3APNE TYPE)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
98D12308351000	1	HOSES FOR FLUID CHANGE, LP
DH0501	1	TOOL - HYDRAULIC FLUID CHANGE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB, 197EB

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-002-A	Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart
TASK 12-32-29-281-001-A	Analyze Hydraulic Fluid
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 29-10-00-680-003-A	Drainage of the Reservoir of the Blue Hydraulic System
TASK 29-10-00-863-003-A	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01	Pressurize the Blue Hydraulic System with the Blue Electric Pump
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-12-43-610-001-A	Servicing of the Electric-Pump Case-Drain Filter
TASK 29-12-44-610-001-A	Servicing of the LP-Filter
TASK 29-12-45-610-001-A	Servicing of the HP-Filter
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
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
Connection of the Tools to the Blue Hydraulic System
Blue Hydraulic System - Schematic Diagram ** ON A/C NOT FOR ALL
Blue Hydraulic System - Schematic Diagram ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 12-36-29-860-127-A

A. Aircraft Maintenance Configuration
(1) On the Blue HP manifold (2011GM), disconnect the pressure switch (2151GN) and (10CE1), and on the free end make a short circuit between the pins A and B with a PLUG - BLANKING (E0052R8B3APNE TYPE).
(2) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(3) On the overhead maintenance panel 50VU, make sure that the LEAK MEASUREMENT VALVES/B pushbutton switch is released (the OFF legend is on).

Subtask 12-36-29-865-060-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
** ON A/C ALL
121VU	HYDRAULIC/Y HYD/PUMP ENG2/MONG	3700GD	Q37
121VU	HYDRAULIC/Y HYD/PUMP ENG2/CTL	3701GD	Q36
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33
** ON A/C ALL
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 12-36-29-010-102-A

C. Get Access
(1) Open the access door 197EB.
(2) Open the access door 195BB.
(3) Open the left or right main landing gear door (Ref. AMM TASK 32-12-00-010-001).
(4) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE below the MLG bay.

Subtask 12-36-29-680-055-A

D. Drain the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-10-00-680-003).

Subtask 12-36-29-860-128-A ** ON A/C NOT FOR ALL

E. Aircraft Maintenance Configuration
(1) Set the GROUND POWER CART - HYDRAULIC, RESERVOIR MIN. 150 L to the correct configuration:
(a) Make sure that the hydraulic ground power-supply reservoir is filled with new Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(b) Make sure that no chlorinated solvent has been used to flush the tool lines.
(c) Set the hydraulic ground power-supply to the "cart reservoir" configuration.
(d) Open the by-pass valve.
(e) Start the hydraulic ground power-supply.
(f) Adjust the hydraulic ground power-supply to a flow of 45 l.min (11.8876 USgal.mn) approx. and stop the hydraulic ground power-supply.

WARNING: PROTECT YOUR HANDS AND FACE FROM THE GAS WHICH COMES OUT WHEN YOU OPEN THE MANUAL DEPRESSURIZATION VALVE OF THE RESERVOIRS. IT IS POSSIBLE THAT THE GAS IS HOT AND CONTAINS HYDRAULIC FLUID.

(2) Set the DH0501 TOOL - HYDRAULIC FLUID CHANGE to the correct configuration.

Connection of the Tools to the Blue Hydraulic System ** ON A/C NOT FOR ALL

Blue Hydraulic System - Schematic Diagram ** ON A/C NOT FOR ALL

(a) Put the DH0501 TOOL - HYDRAULIC FLUID CHANGE in a position, where you can monitor the hydraulic fluid quantity indicator 1834GQ on the Green ground service panel during the procedure.
(b) Put the selector valve 1134GQ in the position for the Blue hydraulic reservoir.

NOTE: Make sure that the Blue reservoir depressurization valve is open when you set the DH0501 TOOL - HYDRAULIC FLUID CHANGE to the correct configuration.

(c) On the DH0501 TOOL - HYDRAULIC FLUID CHANGE close the valve V1.
(d) Connect the connector LP1 of the DH0501 TOOL - HYDRAULIC FLUID CHANGE to the LP connector of the hydraulic ground power-supply.
(e) Connect the HP1 connector of the DH0501 TOOL - HYDRAULIC FLUID CHANGE to the HP connector of the hydraulic ground power-supply.
(f) Connect the LP3 connector of the DH0501 TOOL - HYDRAULIC FLUID CHANGE to the suction connector of the ground service panel.
(g) On the HP manifold (2011GM):
1 Remove the Blue HP filter (2048GM) (Ref. AMM TASK 29-12-45-610-001).
2 Install a dummy bowl of the DH0501 TOOL - HYDRAULIC FLUID CHANGE in place of the Blue HP filter (2048GM).
3 Connect the HP2 line to the dummy bowl and to the valve V2.
(h) On the LP filter (2002GM):
1 Disconnect the tube from the outlet side of the LP filter (2002GM).
2 Put a PLUG - BLANKING in the open port of the tube.
3 Connect the LP filter (2002GM) with the LP2 line. Use the 98D12308351000 HOSES FOR FLUID CHANGE, LP for the connection.
(3) Start the hydraulic ground power-supply and make sure that the pressure read on the gage of the DH0501 TOOL - HYDRAULIC FLUID CHANGE is 4.0 bar (58.0151 psi).
(4) Stop the hydraulic ground power-supply.

Subtask 12-36-29-860-128-B ** ON A/C NOT FOR ALL

NOTE: It is not permitted to use high-density fluid Skydrol 500B-4.

(b) Make sure that no chlorinated solvent has been used to flush the tool lines.
(c) Set the hydraulic ground power-supply to the "cart reservoir" configuration.
(d) Open the by-pass valve.
(e) Start the hydraulic ground power-supply.
(f) Adjust the hydraulic ground power-supply to a flow of 45 l.min (11.8876 USgal.mn) approx. and stop the hydraulic ground power-supply.

WARNING: PROTECT YOUR HANDS AND FACE FROM THE GAS WHICH COMES OUT WHEN YOU OPEN THE MANUAL DEPRESSURIZATION VALVE OF THE RESERVOIRS. IT IS POSSIBLE THAT THE GAS IS HOT AND CONTAINS HYDRAULIC FLUID.

(2) Set the DH0501 TOOL - HYDRAULIC FLUID CHANGE to the correct configuration.

Connection of the Tools to the Blue Hydraulic System ** ON A/C NOT FOR ALL

Blue Hydraulic System - Schematic Diagram ** ON A/C NOT FOR ALL

NOTE: Make sure that the Blue reservoir depressurization valve is open when you set the DH0501 TOOL - HYDRAULIC FLUID CHANGE to the correct configuration.

Subtask 12-36-29-611-069-A

F. Fill the Blue Hydraulic Reservoir as follows:
(1) Open the depressurization valve (2087GM) of the Blue reservoir (Ref. AMM TASK 29-14-00-614-001).
(2) Open the valve V1 of the DH0501 TOOL - HYDRAULIC FLUID CHANGE and start the hydraulic ground power-supply.
(3) Fill the Blue reservoir until the fluid is at the upper limit on the visual indicator.
(4) Close the valve V1.
(5) Close the depressurization valve of the Blue reservoir.
(6) Pressurize the Blue hydraulic reservoir (Ref. AMM TASK 29-14-00-614-002).
(7) Disconnect the outboard air supply.

4. Procedure
Subtask 12-36-29-611-070-A

A. Change of the Hydraulic Fluid

NOTE: Obey the fluid level of the Blue reservoir during the procedure. Adjust the fluid level with the valve V1 when it decreases.

(1) Change the Fluid in the Suction, Pressure and Case Drain Lines of the Blue Electric Pump (2075GJ):
(a) Start the hydraulic ground power-supply.
(b) On the DH0501 TOOL - HYDRAULIC FLUID CHANGE:

Make sure that the valve V1 is open.

Push the BLUE ELEC PUMP P/BSW.

(d) On the maintenance panel 50VU:

Push and release the BLUE PUMP OVRD P/BSW:
- The ON legend comes on
- The electric pump starts.

(e) On the DH0501 TOOL - HYDRAULIC FLUID CHANGE:

Open the valve V2 until you collect 4 liters of fluid.

(f) Close the valve V2.
(g) On the maintenance panel 50VU:

Push and release the BLUE PUMP OVRD P/BSW:
- The ON legend goes off
- The electric pump stops.

(h) Stop the hydraulic ground power-supply.
(2) Change the fluid in the supply and return lines of the primary servocontrols:

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.

(a) Start the hydraulic ground power-supply.

NOTE: Increase the rate of flow and the pressure as necessary.

(b) On the overhead maintenance panel 50VU, push the LEAK MEASUREMENT VALVES/B P/BSW (the OFF legend is off).
(c) On the DH0501 TOOL - HYDRAULIC FLUID CHANGE open the valve V1 and keep it open during the full procedure.
(d) Pressurize the Blue hydraulic system with the E-pump (Ref. AMM TASK 29-10-00-863-003). Make sure that the system pressure shown on the ECAM SD and the pressure gauge of the system accumulator is correct.
(e) In the cockpit, operate the flight controls.
(f) On the panel 11VU, move the GND SPLRS ARMED lever to the FULL position and then to the RET position. Do this step 3 times.

NOTE: The spoilers 3 LH and RH operate.

(g) On the panel 18VU or 19VU, move the side stick fully to the left and then fully to the right. Do this step 3 times.

NOTE: The ailerons and spoilers 3 LH and RH operate.

(h) On the panel 18VU or 19VU, move the side stick fully forward and then fully rearward. Do this step 3 times.

NOTE: The elevators operate.

(i) At the captain or first officer position, push the LH pedal fully forward and then the RH pedal fully forward. Do this step 3 times.

NOTE: The rudder operates.

(j) On the panel 114VU, move the flap/slat lever to the FULL position and then to the 0 deg position. Do this step 2 times.

NOTE: The slats operate.

(k) Stop the hydraulic ground power-supply.
(l) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003).

5. Close-up
Subtask 12-36-29-610-071-A

A. Replace the filter elements of these hydraulic filters:

LP filter (2002GM) (Ref. AMM TASK 29-12-44-610-001).
Case drain filter (2084GM) (Ref. AMM TASK 29-12-43-610-001).

Subtask 12-36-29-860-129-A

B. Aircraft Maintenance Configuration
(1) On the overhead maintenance panel 50VU, make sure that the LEAK MEASUREMENT VALVES/B pushbutton switch is set to off (the OFF legend is on).
(2) On the Blue HP manifold (2011GM), remove the PLUG - BLANKING (E0052R8B3APNE TYPE) from the pressure switches (2151GN) and (10CE1) and connect the pressure switches (2151GN) and (10CE1).
(3) Close the valves V1 and V2 on the DH0501 TOOL - HYDRAULIC FLUID CHANGE.
(4) Disconnect the LP2 line from the LP filter (2002GM). Remove the blanking plug from the tube and connect the tube to the outlet side of the LP filter (2002GM).
(5) Disconnect the HP1 and HP2 lines between the aircraft and the DH0501 TOOL - HYDRAULIC FLUID CHANGE.
(6) Disconnect all the lines between the DH0501 TOOL - HYDRAULIC FLUID CHANGE and the hydraulic power cart.
(7) Remove the dummy bowl of the HP hydraulic filter (2048GM) and replace the filter element (Ref. AMM TASK 29-12-45-610-001).
(8) Pressurize the Blue hydraulic reservoir (Ref. AMM TASK 29-14-00-614-002).
(9) Operate the flight controls and monitor the reservoir level. If necessary fill the Blue hydraulic reservoir (Ref. AMM TASK 12-12-29-611-002).
(10) After one week of aircraft operation, do a new sampling of the hydraulic fluid (Ref. AMM TASK 12-32-29-281-001).
(11) Remove the WARNING NOTICE(S).

Subtask 12-36-29-865-061-A

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
** ON A/C ALL
121VU	HYDRAULIC/Y HYD/PUMP ENG2/MONG	3700GD	Q37
121VU	HYDRAULIC/Y HYD/PUMP ENG2/CTL	3701GD	Q36
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33
** ON A/C ALL
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 12-36-29-410-089-A

D. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Close the access doors 197EB and 195BB.
(4) Close the main landing gear door (Ref. AMM TASK 32-12-00-410-001).
(5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:10:41 UTC