Installation of the Solenoid Valves of the Flap Wing-Tip Brake (WTB)

TASK 27-51-51-400-002-A
Installation of the Solenoid Valves of the Flap Wing-Tip Brake (WTB)

WARNING: MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.

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.

CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:

DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.

FIN: 33CV
FIN: 34CV

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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.27 and 0.25 m.daN (23.89 and 22.12 lbf.in )
98D27604000000	1	COLLAR-SAFETY, SPOILER
98D27604004000	1	COLLAR SAFETY SPOILER

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.12ACC1)	Corrosion Preventive Compound-Heavy Duty Soft Film -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [33CV] (WING TIP BRAKE)
575DB, 575EB
FOR [34CV] (WING TIP BRAKE)
675DB, 675EB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
5	O-RING	AIPC 27-51-51-01-040
6	O-RING	AIPC 27-51-51-01-050
4	BACK-UP RING	AIPC 27-51-51-01-060
2	BACK-UP RING	AIPC 27-51-51-01-070
3	O-RING	AIPC 27-51-51-01-080
1	O-RING	AIPC 27-51-51-01-090

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 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 27-50-00-866-008-A	Extension of the Flaps on the Ground
TASK 27-50-00-866-008-A-01	Extension of the Flaps/Slats on the Ground
TASK 27-50-00-866-009-A	Retraction of the Flaps on the Ground
TASK 27-50-00-866-009-A-01	Retraction of the Flaps/Slats on the Ground
TASK 27-51-00-710-001-A	Operational Test of the Wing Tip Brake and the Pressure Off Brake
TASK 27-60-00-866-002-A	Extension-Retraction of the Spoilers for Maintenance
TASK 29-10-00-863-001-A	Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
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 29-14-00-614-001-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 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
Solenoid valve - Flap WTB
Flap Wing-Tip Brake 33CV(34CV)
FOR [33CV] (WING TIP BRAKE)
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
FOR [34CV] (WING TIP BRAKE)
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System

3. Job Set-up
Subtask 27-51-51-941-061-A

A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the WARNING NOTICE(S) are in the cockpit to tell persons not to pressurize the hydraulic systems.
(3) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the flight controls.

Subtask 27-51-51-860-055-A

B. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the flaps are fully extended (Ref. AMM TASK 27-50-00-866-008).
(3) Make sure that the safety collar from the circuit breakers 10CV and 12CV are removed.
(4) Make sure that the applicable hydraulic systems are depressurized:
(a) FOR [33CV] (WING TIP BRAKE)
depressurize the Yellow and the Blue hydraulic systems (Ref. AMM TASK 29-10-00-864-002) (Ref. AMM TASK 29-10-00-864-003)
(b) FOR [34CV] (WING TIP BRAKE)
depressurize the Green and the Blue hydraulic systems (Ref. AMM TASK 29-10-00-864-001) (Ref. AMM TASK 29-10-00-864-003).
(5) Make sure that the applicable hydraulic reservoirs are depressurized (Ref. AMM TASK 29-14-00-614-001):
(a) FOR [33CV] (WING TIP BRAKE)
depressurize the Yellow and the Blue hydraulic reservoirs
(b) FOR [34CV] (WING TIP BRAKE)
depressurize the Green and the Blue hydraulic reservoirs.
(6) Make sure that the access platform is in position below the applicable solenoid valve.
(7) Make sure that the access panels are removed:

for 33CV, panels 575DB, 575EB
for 34CV, panels 675DB, 675EB.

(8) Make sure that the No. 3 spoiler is in the 'M' (Maintenance) position (Ref. AMM TASK 27-60-00-866-002).
(9) Make sure that the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER is on the piston rod of the servo-control.

Subtask 27-51-51-865-054-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C ALL
121VU	FLIGHT CONTROLS/WTB/FLP/SYS2	12CV	P20
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21
122VU	FLIGHT CONTROLS/WTB/FLP/SYS1	10CV	S07

4. Procedure

CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:

DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.

Subtask 27-51-51-420-057-A

A. Preparation for Installation
(1) Clean the component interface and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Clean the component interfaces and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that the parts retained from the removed component are clean and in the correct condition.
(5) Lubricate the new O-rings (1),(3),(5) and (6),and the back-up rings (2) and (4), with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(6) Remove the blanking plugs from the solenoid valve (7) and the wing tip brake.
(7) Apply a thin layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) at the interface of the solenoid valve (7) and the manifold.
(8) Apply Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to all of the bolts and nuts.

Subtask 27-51-51-420-055-B

B. Installation of the Solenoid Valve
(1) Install the new AIPC 27-51-51-01-040 O-RING (5) and the new AIPC 27-51-51-01-050 O-RING (6) on the solenoid valve (7).
(2) Install the new AIPC 27-51-51-01-060 BACK-UP RING (4) and the new AIPC 27-51-51-01-080 O-RING (3) on the solenoid valve (7). Make sure that the curve on the face of the back-up ring (4) is against the O-ring (3).
(3) Install the new AIPC 27-51-51-01-070 BACK-UP RING (2) and the new AIPC 27-51-51-01-090 O-RING (1) on the solenoid valve (7). Make sure that the curve on the face of the back-up ring (2) is against the O-ring (1).
(4) Install the solenoid valve (7) on the wing tip brake.

NOTE: Solenoid valves 903A0000-01 removed from the PCU valve block (Ref. 27-54-53 and 27-84-53) must not be installed on the wing-tip brake.

(5) Install the screws (9).
(6) TORQUE the screws (9) to between 0.27 and 0.25 m.daN (23.89 and 22.12 lbf.in )

Subtask 27-51-51-860-054-A

C. Aircraft Maintenance Configuration
(1) Fill the applicable hydraulic reservoirs (Ref. AMM TASK 12-12-29-611-001) (Ref. AMM TASK 12-12-29-611-002):
(a) FOR [33CV] (WING TIP BRAKE)
fill the Yellow and the Blue hydraulic reservoirs
(b) FOR [34CV] (WING TIP BRAKE)
fill the Green and the Blue hydraulic reservoirs.
(2) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever.
(3) Make sure that the work area is clean and clear of tools and other items.

Subtask 27-51-51-865-055-A

D. 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	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C ALL
121VU	FLIGHT CONTROLS/WTB/FLP/SYS2	12CV	P20
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21
122VU	FLIGHT CONTROLS/WTB/FLP/SYS1	10CV	S07

Subtask 27-51-51-863-052-A

E. Aircraft Maintenance Configuration
(1) Install the safety collar on circuit breakers 10CV and 12CV.
(2) Pressurize the applicable hydraulic reservoirs and systems:

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.

(a) Pressurize the applicable hydraulic reservoirs (Ref. AMM TASK 29-14-00-614-002):
1 FOR [33CV] (WING TIP BRAKE)
Pressurize the Yellow and the Blue hydraulic system reservoirs.
2 FOR [34CV] (WING TIP BRAKE)
Pressurize the Green and the Blue hydraulic system reservoirs.
(b) Pressurize the applicable hydraulic systems (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001), (Ref. AMM TASK 29-10-00-863-002), (Ref. AMM TASK 29-10-00-863-003):
1 FOR [33CV] (WING TIP BRAKE)
Pressurize the Yellow and the Blue hydraulic systems.
2 FOR [34CV] (WING TIP BRAKE)
Pressurize the Green and the Blue hydraulic systems.
(3) Examine the solenoid valve (7) and the interface to the wing tip brake for leaks.

Subtask 27-51-51-710-052-A

F. Test
(1) Do an operational test of the flap wing-tip brake (Ref. AMM TASK 27-51-00-710-001).
(2) Examine the solenoid valve (7) and the interface to the wing tip brake for leaks.

5. Close-up
Subtask 27-51-51-410-051-A

A. Close Access
(1) Remove the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER from the piston rod of the servo-control.
(2) Put the No. 3 spoiler in the 'O' (Operation) position (Ref. AMM TASK 27-60-00-866-002).
(3) On the servo-control, make sure that the pointer on the hex-head is opposite the letter 'O' (Operation) on the housing.
(4) Make sure that the work area is clean and clear of tools and other items.
(5) Install the access panels:
(a) FOR [33CV] (WING TIP BRAKE)
install 575DB 575EB
(b) FOR [34CV] (WING TIP BRAKE)
install 675DB 675EB.

Subtask 27-51-51-866-055-A

B. Aircraft Configuration
(1) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever.
(2) Retract the flaps fully (Ref. AMM TASK 27-50-00-866-009).

Subtask 27-51-51-942-055-A

C. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.03.31 23:52:57 UTC