Installation of the Blue Hydraulic Reservoir

TASK 29-12-41-400-001-A
Installation of the Blue Hydraulic Reservoir

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

1. Reason for the Job
Self explanatory
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	CONTAINER 5 L (1.32 USGAL)
No specific	2	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.275 and 0.225 m.daN (24.34 and 19.91 lbf.in )
No specific	Torque wrench: range to between 1.19 and 1.08 m.daN (105.31 and 95.58 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 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in )
No specific	Torque wrench: range to between 1.54 and 1.42 m.daN (11.36 and 10.47 lbf.ft )
No specific	Torque wrench: range to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )
No specific	Torque wrench: range to between 1.71 and 1.52 m.daN (12.61 and 11.21 lbf.ft )
No specific	Torque wrench: range to between 2.0 and 1.8 m.daN (14.75 and 13.27 lbf.ft )
No specific	Torque wrench: range to between 3.2 and 2.9 m.daN (23.60 and 21.39 lbf.ft )
No specific	Torque wrench: range to between 3.47 and 3.19 m.daN (25.59 and 23.53 lbf.ft )
No specific	Torque wrench: range to between 3.58 and 3.47 m.daN (26.40 and 25.59 lbf.ft )
No specific	Torque wrench: range to between 5.3 and 4.8 m.daN (39.09 and 35.40 lbf.ft )
No specific	Torque wrench: range to between 8.3 and 7.5 m.daN (61.21 and 55.31 lbf.ft )
No specific	Torque wrench: range to between 10.7 and 9.7 m.daN (78.91 and 71.53 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -
(Material No.06LCG9)	Non Hardening Jointing Putty-Medium Temp. Area - -
(Material No.14CCB6)	Testing Medium-Leak Detection - Oxygen System
No specific	lockwire, corrosion-resistant steel dia 0.8 mm (0.032 in.)
No specific	lockwire, corrosion-resistant steel dia, 0.8 mm (0.032 in.)

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
197EB, 197FB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
4	O-RING	AIPC 29-12-04-12-160
27	O-RING	AIPC 29-12-04-12-200
4	O-RING	AIPC 29-12-84-10-180
27	O-RING	AIPC 29-12-84-10-200
8	O-RING	AIPC 29-14-04-05-030
11	O-RING	AIPC 29-14-04-05-050
11	O-RING	AIPC 29-14-84-08-020
8	O-RING	AIPC 29-14-84-08-050
23	O-RING	AIPC 29-34-04-01-070
30	O-RING	AIPC 29-34-04-01-070
23	O-RING	AIPC 29-34-84-01-070

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 12-12-29-611-002-A	Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
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 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
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 29-31-00-710-001-A	Functional Check of Reservoir Low Level Warning
TASK 29-34-00-710-001-A	Operational Test of Reservoir Low Air Pressure Warning
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
Reservoir of the Blue Hydraulic System
Reservoir of the Blue Hydraulic System ** ON A/C NOT FOR ALL
Reservoir of the Blue Hydraulic System ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 29-12-41-860-053-A

A. Aircraft Maintenance Configuration

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Make sure that the Blue hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001).
(3) Make sure that the reservoir of the Blue hydraulic system is depressurized.
(Ref. AMM TASK 29-14-00-614-001).
(4) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position at the access door 197EB.
(5) Make sure that the access doors 197EB and 197FB are open.
(6) Make sure that the CONTAINER 5 L (1.32 USGAL) is in position below the location of the Blue reservoir.
(7) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Blue hydraulic system:

in the cockpit on the hydraulic section 40VU of the overhead panel,
on the ground service panel of the Blue hydraulic system.

Subtask 29-12-41-865-051-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
121VU	HYDRAULIC/LOW/LVL/IND	1832GQ	N32
121VU	HYDRAULIC/HYD/QTY/IND	1831GQ	P35
123VU	B HYD/ELEC PUMP	2701GJ	AB09

4. Procedure
Subtask 29-12-41-560-050-D ** ON A/C NOT FOR ALL

A. Preparation of the Replacement Component
(1) Remove the parts which are attached to the removed reservoir as follows:
(a) Remove and discard the lockwire from the reducer (3).
(b) Remove the reducer (3) and discard the O-ring (4).
(c) Remove and discard the lockwire from the pressure switch (29).
(d) Remove the pressure switch (29) and discard the O-ring (30).
(e) Remove and discard the lockwire.
(f) Remove the pressure gage (10) together with its reducer (9) and discard the O-ring (8).
(g) Remove and discard the lockwire from the pressure relief valve (12).
(h) Remove the pressure relief valve (12) and discard the O-ring (11).
(i) Remove the lockwire from the pressure switch (22).
(j) Remove the pressure switch (22) and discard the O-ring (23).
(k) Remove the union (26) and discard the O-ring (27).
(l) Remove the pressure gage (10) from the reducer (9).
(m) Install blanking plugs on the open reservoir ports.
(2) Install the removed parts on the replacement reservoir as follows:
(a) Directly before installation, lubricate all replaced O-rings with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(b) Remove the blanking plugs from the ports on the top of the reservoir (19).
(c) Put the AIPC 29-12-04-12-200 O-RING (27) or AIPC 29-12-84-10-200 O-RING (27) in position and install the union (26).
(d) TORQUE the union (26) to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in )

.
(e) Put the AIPC 29-14-04-05-030 O-RING (8) or AIPC 29-14-84-08-050 O-RING (8) in position and install the reducer (9).
(f) TORQUE the reducer (9) to between 1.19 and 1.08 m.daN (105.31 and 95.58 lbf.in )

.
(g) Install the pressure gage (10) on the reducer (9).

NOTE: Make sure that the pressure gage (10) can be clearly read when it is installed.

(h) Hold the reducer (9) and TORQUE the pressure gage connector (10) to between 1.71 and 1.52 m.daN (12.61 and 11.21 lbf.ft )

.
(i) Safety the connector of the pressure gage (10) and the reducer (9) with lockwire, corrosion-resistant steel dia 0.8 mm (0.032 in.)
(j) Put the AIPC 29-34-04-01-070 O-RING (23) or AIPC 29-34-84-01-070 O-RING (23) in position and install the pressure switch (22).
(k) TORQUE the pressure switch (22) to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in )

.
(l) Safety the pressure switch (22) with lockwire, corrosion-resistant steel dia 0.8 mm (0.032 in.).
(m) Put the AIPC 29-14-04-05-050 O-RING (11) or AIPC 29-14-84-08-020 O-RING (11) in position and install the pressure relief valve (12).
(n) TORQUE the pressure relief valve (12) to between 3.58 and 3.47 m.daN (26.40 and 25.59 lbf.ft )

.
(o) Safety the pressure relief valve (12) with lockwire, corrosion-resistant steel dia 0.8 mm (0.032 in.).
(p) Put the AIPC 29-12-04-12-160 O-RING (4) or AIPC 29-12-84-10-180 O-RING (4) in position and install the reducer (3).
(q) TORQUE the reducer (3) to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in )

.
(r) Put the AIPC 29-34-04-01-070 O-RING (30) in position and install the pressure switch (29).
(s) Tighten the pressure switch (29).
(t) Safety the pressure switch (29) and the reducer (3) with lockwire, corrosion-resistant steel dia, 0.8 mm (0.032 in.).

Subtask 29-12-41-420-053-C ** ON A/C NOT FOR ALL

B. Installation of the Reservoir

CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL LOOSEN OR TIGHTEN THE UNION TOO MUCH.

CAUTION: YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS LUBRICANT.

(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Examine the support structure of the reservoir for damage, cracks or corrosion.
(4) Remove the blanking plugs from the reservoir (19) and pipes.
(5) Lubricate the threads of the connections with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(6) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the bolts (51).
(7) Put the reservoir (19) into position in its supports, connect the ends of the straps (50) and install the bolts (51).
(8) Tighten the bolts (51).
(9) TORQUE the bolts (51) to to between 0.275 and 0.225 m.daN (24.34 and 19.91 lbf.in )

.
(10) Safety the bolts (51) with lockwire, corrosion-resistant steel dia 0.8 mm (0.032 in.).
(11) Make sure that the hydraulic line end-fittings are serviceable.
(12) Connect the drain pipe (47) to the reservoir port.
(13) TORQUE the pipe end-fitting (48) to between 2.0 and 1.8 m.daN (14.75 and 13.27 lbf.ft )

.
(14) Connect the return pipe (41) to the filter (2022GM) but do not tighten the pipe end-fitting (40).
(15) Connect the return pipe (41) to the reservoir (19).
(16) TORQUE the pipe end-fittings (40) and (42) at the two ends of the return pipe (41) to between 5.3 and 4.8 m.daN (39.09 and 35.40 lbf.ft )

.
(17) Connect the suction pipe (44) to the T-piece (46) but do not tighten the pipe end-fitting (45).
(18) Connect the suction pipe (44) to the reservoir (19).
(19) TORQUE the pipe end-fittings (43),(45) at the two ends of the suction pipe (44) to between 10.7 and 9.7 m.daN (78.91 and 71.53 lbf.ft )

.
(20) Connect the seal drain connector (14) to the pressure relief valve (12).
(21) TORQUE the pipe end-fitting (13) to between 8.3 and 7.5 m.daN (61.21 and 55.31 lbf.ft )

.
(22) Connect the air bleed pipe (1) to the reducer (3).
(23) TORQUE the pipe end-fitting (2) to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )

.
(24) Connect the air pipe (24) to the reservoir port.
(25) TORQUE the pipe end-fitting (25) to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )

.
(26) Connect the bonding jumpers (16),(17) to the reservoir (19) (Ref. AMM TASK 20-28-00-912-802).
(27) Install the bolt (15), the washer (18) and the nut (20).
(28) Tighten the nut (20).
(29) Remove the protective caps from the electrical connectors and receptacles.
(30) Make sure that all the electrical connections are clean and in the correct condition.
(31) Connect the electrical connectors (52),(49),(21),(28).

Subtask 29-12-41-560-050-E ** ON A/C NOT FOR ALL

C. Preparation of the Replacement Component
(1) Remove the parts which are attached to the removed reservoir as follows:
(a) Remove and discard the lockwire from the reducer (3).
(b) Remove the reducer (3) and discard the O-ring (4).
(c) Remove and discard the lockwire.
(d) Remove the pressure gage (10) together with its reducer (9) and discard the O-ring (8).
(e) Remove and discard the lockwire from the pressure relief valve (12).
(f) Remove the pressure relief valve (12) and discard the O-ring (11).
(g) Remove the lockwire from the pressure switch (22).
(h) Remove the pressure switch (22) and discard the O-ring (23).
(i) Remove the union (26) and discard the O-ring (27).
(j) Remove the pressure gage (10) from the reducer (9).
(k) Install blanking plugs on the open reservoir ports.
(2) Install the removed parts on the replacement reservoir as follows:
(a) Directly before installation, lubricate all replaced O-rings with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(b) Remove the blanking plugs from the ports on the top of the reservoir (19).
(c) Put the AIPC 29-12-04-12-200 O-RING (27) in position and install the union (26).
(d) TORQUE the union (26) to between 1.19 and 1.08 m.daN (105.31 and 95.58 lbf.in )

.
(e) Put the AIPC 29-14-04-05-030 O-RING (8) in position and install the reducer (9).
(f) TORQUE the reducer (9) to between 1.19 and 1.08 m.daN (105.31 and 95.58 lbf.in )

.
(g) Install the pressure gage (10) on the reducer (9).

NOTE: Make sure that the pressure gage (10) can be clearly read when it is installed.

(h) Hold the reducer (9) and TORQUE the pressure gage connector (10) to between 1.71 and 1.52 m.daN (12.61 and 11.21 lbf.ft )

.
(i) Safety the connector of the pressure gage (10) and the reducer (9) with lockwire, corrosion-resistant steel dia 0.8 mm (0.032 in.)
(j) Put the AIPC 29-34-04-01-070 O-RING (23) in position and install the pressure switch (22).
(k) TORQUE the pressure switch (22) to between 1.71 and 1.52 m.daN (12.61 and 11.21 lbf.ft )

.
(l) Safety the pressure switch (22) with lockwire, corrosion-resistant steel dia 0.8 mm (0.032 in.).
(m) Put the AIPC 29-14-04-05-050 O-RING (11) in position and install the pressure relief valve (12).
(n) TORQUE the pressure relief valve (12) to between 3.47 and 3.19 m.daN (25.59 and 23.53 lbf.ft )

.
(o) Safety the pressure relief valve (12) with lockwire, corrosion-resistant steel dia 0.8 mm (0.032 in.).
(p) Put the AIPC 29-12-04-12-160 O-RING (4) in position and install the reducer (3).
(q) TORQUE the reducer (3) to between 1.54 and 1.42 m.daN (11.36 and 10.47 lbf.ft )

Subtask 29-12-41-420-053-D ** ON A/C NOT FOR ALL

D. Installation of the Reservoir

CAUTION: YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS LUBRICANT.

.
(20) Connect the seal drain connector (14) to the pressure relief valve (12).
(21) TORQUE the pipe end-fitting (13) to between 8.3 and 7.5 m.daN (61.21 and 55.31 lbf.ft )

.
(22) Connect the air bleed pipe (1) to the reducer (3).
(23) TORQUE the pipe end-fitting (2) to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )

.
(24) Connect the air pipe (24) to the reservoir port.
(25) TORQUE the pipe end-fitting (25) to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )

Subtask 29-12-41-861-050-A

E. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 29-12-41-865-052-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
121VU	HYDRAULIC/LOW/LVL/IND	1832GQ	N32
121VU	HYDRAULIC/HYD/QTY/IND	1831GQ	P35
123VU	B HYD/ELEC PUMP	2701GJ	AB09

Subtask 29-12-41-710-050-B

G. Test of the Reservoir
(1) Do an operational test of the low level warning (Ref. AMM TASK 29-31-00-710-001).
(2) Do an operational test of the low air pressure warning (Ref. AMM TASK 29-34-00-710-001).
(3) Make sure that the fluid level in the reservoir of the Blue hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).

NOTE: It is necessary to do the bleeding procedure given in the reservoir filling procedure.

(4) Pressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-002).
(5) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(6) On the ECAM control panel of the center pedestal, push the HYD pushbutton. Make sure that the HYD page on the ECAM lower DU comes on.
(7) Make sure that the two reservoir content gages (one on the reservoir and one on the ground service panel of the Green hydraulic system) show the same contents and agree with the ECAM contents indication.
(8) Examine the reservoir and the pipe connections and make sure that there are no leaks.
(9) Apply leak detector Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) to the reservoir and air pipe connections and make sure that there are no leaks.

5. Close-up
Subtask 29-12-41-860-054-A

A. Put the aircraft back to the serviceable condition.
(1) Make sure that the fluid level on the reservoir of the Blue hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(4) Remove the container.
(5) Remove the warning notices from the cockpit and from the ground service panel of the Blue hydraulic system.
(6) Remove the access platform.

Subtask 29-12-41-410-050-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access doors 197FB 197EB.

[Rev.10 from 2021] 2026.04.01 00:19:21 UTC