Removal of the Spoiler Servo Control

TASK 27-64-51-000-004-A
Removal of the Spoiler Servo Control

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: 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: 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: 580
ZONE: 680
FIN: 31CE1
FIN: 31CE10
FIN: 31CE2
FIN: 31CE3
FIN: 31CE4
FIN: 31CE5
FIN: 31CE6
FIN: 31CE7
FIN: 31CE8
FIN: 31CE9

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	AR	CAP - BLANKING
No specific	1	CONTAINER 1 L (1/4 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
98D27603002000	1	KEY-SPOILER MAINTENANCE
98D27603002001	1	KEY-SPOILER MAINTENANCE
98D27604000000	1	COLLAR-SAFETY, SPOILER
98D27604001000	1	STRUT SUPPORT - SPOILER 2, 3, 4, AND 5
98D27604002000	1	STRUT SUPPORT - SPOILER 1
98D27604004000	1	COLLAR SAFETY SPOILER
98D27803000000	1	LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
98L12003001000	1	HARNESS,SAFETY

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
580	LEFT WING FLAPS AND SPOILERS
680	RIGHT WING FLAPS AND SPOILERS
FOR [31CE1] (SERVO CTL-SPLR1, L G)
573BB
FOR [31CE10] (SERVO CTL-SPLR5, R G)
675GB
FOR [31CE2] (SERVO CTL-SPLR1, R G)
673BB
FOR [31CE3] (SERVO CTL-SPLR2, L Y)
575BB
FOR [31CE4] (SERVO CTL-SPLR2, R Y)
675BB
FOR [31CE5] (SERVO CTL-SPLR3, L B)
575DB
FOR [31CE6] (SERVO CTL-SPLR3, R B)
675DB
FOR [31CE7] (SERVO CTL-SPLR4, L Y)
575EB
FOR [31CE8] (SERVO CTL-SPLR4, R Y)
675EB
FOR [31CE9] (SERVO CTL-SPLR5, L G)
575GB

C. Referenced Information

REFERENCE	DESIGNATION
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 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
Spoilers 1 thru 5 Servo Control - Hydraulic Line Details
Spoilers 1 thru 5 Servo Control - Location and Detail
FOR [31CE1] (SERVO CTL-SPLR1, L G)
TASK 57-51-37-000-002-A	Removal of the Access Panels 571AB(671AB), 573AB(673AB), 573BB(673BB), 573CB(673CB), 573EB(673EB)
FOR [31CE1] (SERVO CTL-SPLR1, L G)
FOR [31CE10] (SERVO CTL-SPLR5, R G)
FOR [31CE2] (SERVO CTL-SPLR1, R G)
FOR [31CE9] (SERVO CTL-SPLR5, L G)
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
FOR [31CE10] (SERVO CTL-SPLR5, R G)
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
FOR [31CE2] (SERVO CTL-SPLR1, R G)
TASK 57-51-37-000-002-A	Removal of the Access Panels 571AB(671AB), 573AB(673AB), 573BB(673BB), 573CB(673CB), 573EB(673EB)
FOR [31CE3] (SERVO CTL-SPLR2, L Y)
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
FOR [31CE3] (SERVO CTL-SPLR2, L Y)
FOR [31CE4] (SERVO CTL-SPLR2, R Y)
FOR [31CE7] (SERVO CTL-SPLR4, L Y)
FOR [31CE8] (SERVO CTL-SPLR4, R Y)
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
FOR [31CE4] (SERVO CTL-SPLR2, R Y)
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
FOR [31CE5] (SERVO CTL-SPLR3, L B)
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
FOR [31CE5] (SERVO CTL-SPLR3, L B)
FOR [31CE6] (SERVO CTL-SPLR3, R B)
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
FOR [31CE6] (SERVO CTL-SPLR3, R B)
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
FOR [31CE7] (SERVO CTL-SPLR4, L Y)
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
FOR [31CE8] (SERVO CTL-SPLR4, R Y)
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
FOR [31CE9] (SERVO CTL-SPLR5, L G)
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)

3. Job Set-up
Subtask 27-64-51-941-057-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Put WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic systems.
(3) Put WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic reservoirs.
(4) Put WARNING NOTICE(S) in position to tell persons not to operate the flight control surfaces.

Subtask 27-64-51-875-053-A

B. Open, safety and tag 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 27-64-51-860-052-A

C. 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) Fully extend the flaps (Ref. AMM TASK 27-50-00-866-008).
(2) On the slat/flap control lever, make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is in position.
(3) Depressurize the applicable hydraulic system and the related reservoir:
(a) FOR [31CE1] (SERVO CTL-SPLR1, L G), [31CE2] (SERVO CTL-SPLR1, R G), [31CE9] (SERVO CTL-SPLR5, L G), [31CE10] (SERVO CTL-SPLR5, R G)
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).
(b) FOR [31CE3] (SERVO CTL-SPLR2, L Y), [31CE4] (SERVO CTL-SPLR2, R Y), [31CE7] (SERVO CTL-SPLR4, L Y), [31CE8] (SERVO CTL-SPLR4, R Y)
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).
(c) FOR [31CE5] (SERVO CTL-SPLR3, L B), [31CE6] (SERVO CTL-SPLR3, R B)
depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003) and the Blue hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).
(4) 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.

Subtask 27-64-51-865-060-A

DELETED

Subtask 27-64-51-010-052-B

E. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the correct zone:
(a) FOR [31CE1] (SERVO CTL-SPLR1, L G)
below zone 582
(b) FOR [31CE2] (SERVO CTL-SPLR1, R G)
below zone 682
(c) FOR [31CE3] (SERVO CTL-SPLR2, L Y)
below zone 583
(d) FOR [31CE4] (SERVO CTL-SPLR2, R Y)
below zone 683
(e) FOR [31CE5] (SERVO CTL-SPLR3, L B)
below zone 584
(f) FOR [31CE6] (SERVO CTL-SPLR3, R B)
below zone 684
(g) FOR [31CE7] (SERVO CTL-SPLR4, L Y)
below zone 585
(h) FOR [31CE8] (SERVO CTL-SPLR4, R Y)
below zone 685
(i) FOR [31CE9] (SERVO CTL-SPLR5, L G)
below zone 586
(j) FOR [31CE10] (SERVO CTL-SPLR5, R G)
below zone 686.
(2) Remove the applicable access panel:
(a) FOR [31CE1] (SERVO CTL-SPLR1, L G)
remove 573BB (Ref. AMM TASK 57-51-37-000-002).
(b) FOR [31CE2] (SERVO CTL-SPLR1, R G)
remove 673BB (Ref. AMM TASK 57-51-37-000-002).
(c) FOR [31CE3] (SERVO CTL-SPLR2, L Y)
remove 575BB (Ref. AMM TASK 57-51-37-000-004).
(d) FOR [31CE4] (SERVO CTL-SPLR2, R Y)
remove 675BB (Ref. AMM TASK 57-51-37-000-004).
(e) FOR [31CE5] (SERVO CTL-SPLR3, L B)
remove 575DB (Ref. AMM TASK 57-51-37-000-004).
(f) FOR [31CE6] (SERVO CTL-SPLR3, R B)
remove 675DB (Ref. AMM TASK 57-51-37-000-004).
(g) FOR [31CE7] (SERVO CTL-SPLR4, L Y)
remove 575EB (Ref. AMM TASK 57-51-37-000-004).
(h) FOR [31CE8] (SERVO CTL-SPLR4, R Y)
remove 675EB (Ref. AMM TASK 57-51-37-000-004).
(i) FOR [31CE9] (SERVO CTL-SPLR5, L G)
remove 575GB (Ref. AMM TASK 57-51-37-000-004).
(j) FOR [31CE10] (SERVO CTL-SPLR5, R G)
remove 675GB (Ref. AMM TASK 57-51-37-000-004).
(3) Lift the applicable spoiler for access:

CAUTION: DO NOT APPLY A HIGH TORQUE LOAD ON THE KEY SPOILER MAINTENANCE TOOL WHEN YOU SET THE SERVOCONTROL TO OPERATIONAL MODE OR MAINTENANCE MODE. IF YOU APPLY A HIGH TORQUE LOAD, IT CAN CAUSE DAMAGE TO THE TOOL AND/OR TO THE SERVOCONTROL.

(a) Put the 98D27603002000 KEY-SPOILER MAINTENANCE or 98D27603002001 KEY-SPOILER MAINTENANCE into the maintenance device of the spoiler servo control.
(b) Turn the maintenance device of the spoiler servo control to the 'M' position, then manually lift the spoiler.
(c) Install the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER on the piston rod of the applicable spoiler servo control.
(4) Put the CONTAINER 1 L (1/4 USGAL) below the hydraulic unions of the applicable spoiler servo control.

4. Procedure
Subtask 27-64-51-020-053-B

A. Removal of the Spoiler Servo Control

CAUTION: SUPPORT THE SERVO CONTROL 7.5kg (16.5lb) AND THE SPOILER APPROXIMATELY 15kg (33lb). THIS WILL PREVENT DAMAGE TO:

THE HYDRAULIC LINES
THE ELECTRICAL CABLES
THE STRUCTURE.

(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Disconnect the hydraulic unions of the applicable spoiler servo control:
(a) FOR [31CE1] (SERVO CTL-SPLR1, L G), [31CE2] (SERVO CTL-SPLR1, R G)
disconnect the unions (1), (2) and (4).
(b) FOR [31CE3] (SERVO CTL-SPLR2, L Y)
disconnect the unions (23), (24), (25) and (27).
(c) FOR [31CE4] (SERVO CTL-SPLR2, R Y)
disconnect the unions (5), (7), (8) and (10).
(d) FOR [31CE5] (SERVO CTL-SPLR3, L B)
disconnect the unions (17), (18), (21) and (22).
(e) FOR [31CE6] (SERVO CTL-SPLR3, R B)
disconnect the unions (11), (12), (13), (15) and (16).
(f) FOR [31CE7] (SERVO CTL-SPLR4, L Y)
disconnect the unions (30) and (31).
(g) FOR [31CE8] (SERVO CTL-SPLR4, R Y)
disconnect the unions (32) and (33).
(h) FOR [31CE9] (SERVO CTL-SPLR5, L G)
disconnect the unions (34), (36), (37), (38) and (40).
(i) FOR [31CE10] (SERVO CTL-SPLR5, R G)
disconnect the unions (41), (42), (43), (45), (46) and (47).
(3) Remove all the drops of hydraulic fluid from the adjacent aircraft structure.
(4) Remove the applicable hydraulic pipes:
(a) FOR [31CE1] (SERVO CTL-SPLR1, L G), [31CE2] (SERVO CTL-SPLR1, R G)
remove the pipe (3).
(b) FOR [31CE3] (SERVO CTL-SPLR2, L Y)
remove the pipes (22) and (26).
(c) FOR [31CE4] (SERVO CTL-SPLR2, R Y)
remove the pipes (6) and (9).
(d) FOR [31CE5] (SERVO CTL-SPLR3, L B)
remove the pipe (19).
(e) FOR [31CE6] (SERVO CTL-SPLR3, R B)
remove the pipe (14).
(f) FOR [31CE9] (SERVO CTL-SPLR5, L G)
remove the pipe (35) and the connector (39).
(g) FOR [31CE10] (SERVO CTL-SPLR5, R G)
remove the pipe (44) and (49) and the connector (48).
(5) Put the PLUG-BLANKING in each disconnected line end.
(6) Disconnect the electrical connector (73).
(7) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(8) Remove and discard the cotter pin (70) from the locking cap (69).
(9) Remove the locking cap (69), nut (68) and washer (67).
(10) Remove the special bolt (65) and the sliding bush (66) from the spoiler attachment bracket.
(11) Remove the bolts (61) and the washers (60).
(12) Remove all the drops of hydraulic fluid from the adjacent aircraft structure.
(13) Move the spoiler servo control approximately 6 mm (0.24 in.) away from the structure to disengage the location dowels.
(14) Move the spoiler servo control away from the applicable hydraulic line connector:
(a) FOR [31CE9] (SERVO CTL-SPLR5, L G)
the connector (39)
(b) FOR [31CE10] (SERVO CTL-SPLR5, R G)
the connector (48).
(15) Remove the spoiler servo control.
(16) Remove the flanged bush (64).
(17) Install the correct spoiler support strut:

For spoiler 1, install 98D27604002000 STRUT SUPPORT - SPOILER 1.
For spoilers 2 thru 5, install 98D27604001000 STRUT SUPPORT - SPOILER 2, 3, 4, AND 5.

(18) Remove the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER from the piston rod of the spoiler servo control.

[Rev.10 from 2021] 2026.04.01 07:04:58 UTC