Installation of the Servo-Valve on the Spoiler Servo-Control

TASK 27-64-51-400-002-A
Installation of the Servo-Valve on the Spoiler Servo-Control

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.

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: YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:

ON THE THS OR IN THE REAR FUSELAGE
ON TOP OF THE WINGS OR PYLONS.

WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

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.

ZONE: 574
ZONE: 582
ZONE: 583
ZONE: 584
ZONE: 674
ZONE: 682
ZONE: 683
ZONE: 684

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 5M (16 FT)- ADJUSTABLE
No specific	AR	BRUSH - BRISTLED, SOFT
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.759 and 0.621 m.daN (67.17 and 54.96 lbf.in )
98D27603002000	1	KEY-SPOILER MAINTENANCE
98D27603002001	1	KEY-SPOILER MAINTENANCE
98L12003001000	1	HARNESS,SAFETY

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -
(Material No.03JDA1)	Silicone base Grease-Bearings - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
574	FALSE SPAR BOX
582	SPOILER N° 1
583	SPOILER N° 2
584	SPOILER N° 3
674	FALSE SPAR BOX
682	SPOILER N° 1
683	SPOILER N° 2
684	SPOILER N° 3

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	SERVO-VALVE	AIPC 27-64-51-01-030
2	O-RING	AIPC 27-64-51-01-050
5	GASKET	AIPC 27-64-51-01-060

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
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 27-60-00-866-002-A	Extension-Retraction of the Spoilers for Maintenance
TASK 27-64-00-710-001-A	Operational Test of the Spoiler Hydraulic Actuation
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
Servo-Valve - Location and Detail

3. Job Set-up
Subtask 27-64-51-941-059-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 operate the flight controls.
(3) Make sure that the WARNING NOTICE(S) is in the cockpit to tell persons not to pressurize the hydraulic systems.

Subtask 27-64-51-860-055-B

B. Aircraft Maintenance Configuration

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.

(1) Put on a safety harness:

WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

(a) Put on and attach a 98L12003001000 HARNESS,SAFETY before you start work in the work area.
(2) Make sure that the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is below the applicable servo-valve (3).
(3) Make sure that the flaps are fully extended (Ref. AMM TASK 27-50-00-866-008).
(4) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is installed.
(5) Make sure that the applicable spoiler (Ref. AMM TASK 27-60-00-866-002) has been extended.
(6) Make sure that the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER is on the piston rod of the servo-control.
(7) Make sure that the applicable hydraulic system is depressurized:

For the spoiler 1 and the spoiler 5, depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) and the green hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001)
For the spoiler 2 and the spoiler 4, depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002) and the yellow hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001)
For the spoiler 3, depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003) and the blue hydraulic system reservoir (Ref. AMM TASK 29-14-00-614-001).

Subtask 27-64-51-875-057-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/SEC1/NORM/SPLY	21CE1	B08
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B03
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C ALL
105VU	FLT CTL/SEC1/STBY SPLY	22CE	B01
** 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/SOL VALVES/G/Y/PTU	1801GL	N34
121VU	HYDRAULIC/Y HYD/PUMP ENG2/MONG	3700GD	Q37
121VU	HYDRAULIC/Y HYD/PUMP ENG2/CTL	3701GD	Q36
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21
121VU	FLIGHT CONTROLS/SEC3/SPLY	21CE3	Q19
121VU	FLIGHT CONTROLS/SEC2/SPLY	21CE2	Q18
** 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	B HYD/ELEC PUMP	2701GJ	AB09
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 27-64-51-865-054-A

DELETED

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 27-64-51-420-057-A

A. Preparation for Installation
(1) Remove the blanking cover from the servo-control (1) interface.
(2) Use a clean Textile-Lint free Cotton - (Material No.14SBA1) and a BRUSH - BRISTLED, SOFT with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the servo-valve (3) and the servo-control (1) interfaces.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Examine the AIPC 27-64-51-01-060 GASKET (5) for the correct condition and replace the item if it is damaged.
(5) Make sure that the parts retained from the removed component are clean and in the correct condition.
(6) Lubricate the new AIPC 27-64-51-01-050 O-RING (2) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(7) Apply a layer of Silicone base Grease-Bearings - - (Material No.03JDA1) to the threads of the bolts (4).

Subtask 27-64-51-420-058-B

B. Installation of the Servo-Valve on the Spoiler Servo-Control
(1) If necessary, install a new AIPC 27-64-51-01-030 SERVO-VALVE (3).
(2) Install the gasket (5) on the servo-valve (3).

NOTE: It is not necessary to lubricate the mating surface of the servo-valve (3) with the gasket (5).
The mating surface of the servo-valve (3) must be clean and dry.

(3) Install the new O-ring (2) on the servo-valve (3).
(4) Put the servo-valve (3) into position on the spoiler servo-control (1).
(5) Install the bolts (4) through the servo-valve (3) and into the spoiler servo-control (1).
(6) TORQUE the bolts (4) to between 0.759 and 0.621 m.daN (67.17 and 54.96 lbf.in )

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(a) Safety the bolts (4) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(7) Lower the applicable spoiler (Ref. AMM TASK 27-60-00-866-002).
(8) On the servo-control, turn the 98D27603002000 KEY-SPOILER MAINTENANCE or the 98D27603002001 KEY-SPOILER MAINTENANCE in the maintenance device to the operation position and then remove it.
(9) Remove the access platform(s).

Subtask 27-64-51-875-058-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	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B08
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B03
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C ALL
105VU	FLT CTL/SEC1/STBY SPLY	22CE	B01
** 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/SOL VALVES/G/Y/PTU	1801GL	N34
121VU	HYDRAULIC/Y HYD/PUMP ENG2/MONG	3700GD	Q37
121VU	HYDRAULIC/Y HYD/PUMP ENG2/CTL	3701GD	Q36
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21
121VU	FLIGHT CONTROLS/SEC3/SPLY	21CE3	Q19
121VU	FLIGHT CONTROLS/SEC2/SPLY	21CE2	Q18
** 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	B HYD/ELEC PUMP	2701GJ	AB09
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 27-64-51-865-055-A

DELETED

Subtask 27-64-51-863-050-A

E. Fill and Pressurize the Hydraulic 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.

(1) Fill the applicable hydraulic system reservoir (Ref. AMM TASK 12-12-29-611-001).

Subtask 27-64-51-870-052-A

F. Bleed the Servo-Controls
(1) Do a minimum of ten full travel operations of the spoilers, to bleed all the air from the servo-controls (Ref. AMM TASK 27-64-00-710-001).

Subtask 27-64-51-710-051-A

G. Test
(1) Do an operational test of the spoilers (Ref. AMM TASK 27-64-00-710-001).
(2) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position below the applicable spoiler servo-valve (3).
(3) Examine the servo-valve (3) and its interface with the spoiler servo-control (1) for leaks.

5. Close-up
Subtask 27-64-51-942-052-A

A. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Retract the flaps.

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) Retract the flaps fully (Ref. AMM TASK 27-50-00-866-009).
(3) Remove the SAFETY BARRIER(S).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).
(6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.03.31 23:56:01 UTC