Removal of the Rudder

TASK 27-21-41-000-001-A
Removal of the Rudder

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.

CAUTION: DO THIS PROCEDURE IN A HANGAR IF THERE ARE WIND GUSTS. WIND GUSTS CAN CAUSE DAMAGE TO THE LINKAGE WHEN THE RIGGING PINS ARE IN POSITION ON THE RUDDER CONTROL.

CAUTION: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.

ZONE: 320

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 10M (33 FT) - ADJUSTABLE
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	1	CRANE 300KG (660 LB)
No specific	AR	MAT - RUBBER
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	SUPPORT STRUCTURE - RUDDER
No specific	1	TIE WRAP
No specific	AR	WARNING NOTICE(S)
98A55308440000	1	SLING-UNIVERSAL,TAIL PLANE
98A55308440001	1	SLING-UNIVERSAL,TAILPLANE
98A55308741001	1	SLING,R I RUDDER
98D27207545000	1	PIN-RIGGING
98D27207547000	1	PIN-RIGGING
98D27207548000	1	PIN-RIGGING
SL90-314-3750	1	TOOL - EXTRACTION, TAB WASHERS STA-LOK NSA5454
SL90-314-5625	1	TOOL - EXTRACTION, TAB WASHERS STA-LOK NSA5454
SL90-315-3750	1	WRENCH - NOTCHED, TIGHTENING OF NUTS NSA5454
SL90-322-5625	1	WRENCH - NOTCHED, TIGHTENING OF NUTS NSA5454
SL90-350-7500	1	TOOL - EXTRACTION, TAB WASHERS STA-LOK NSA 5454

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
320	VERTICAL STABILIZER AND RUDDER
312AR, 325BL, 325BR, 325CL, 325CR, 325DL, 325DR, 325EL, 325ER

C. Referenced Information

REFERENCE	DESIGNATION
TASK 20-22-00-000-001-A	Removal of STA-LOK Nuts and Lockwashers
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 29-10-00-863-003-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 53-55-12-000-001-A	Removal of the Rudder Fairings
TASK 55-33-13-010-002-A	Opening/Removal of the Trailing Edge Access-Panels of the Vertical Stabilizer
TASK 55-42-13-000-001-A	Removal of the Access Panel 326CT at the Rudder Attach Fitting No. 7
Panel and Rigging Pin Locations
Sling Attachment for Rudder with three Hoist Points
Sling Attachment for Rudder with two Hoist Points
Transducer 42WV Push-Rod and Hinge No. 1 Connections
Rudder Servo Control Connections
Hinges No. 6 and No. 7 - Connections
Hinges Nos. 2,3,4 and 5 - Connections
Servo Control Connections at the Rudder with Bolt PN D55370020800

3. Job Set-up
Subtask 27-21-41-860-050-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits. (Ref. AMM TASK 24-41-00-861-002)

Subtask 27-21-41-865-053-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AUTO FLT/FAC1/28VDC	5CC1	B04
49VU	AUTO FLT/FAC1/26VAC	14CC1	B03
** ON A/C NOT FOR ALL
49VU	AUTO FLT/FAC1/28VDC	5CC1	H10
49VU	AUTO FLT/FAC1/26VAC	14CC1	H09
** ON A/C ALL
121VU	AUTO FLT/RUDDER/TRIM/IND	15CC	M20
121VU	AUTO FLT/FAC2/28VDC	5CC2	M19
121VU	AUTO FLT/FAC2/26VAC	14CC2	M18

Subtask 27-21-41-860-052-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) Pressurize the Blue hydraulic system with the electric pump. (Ref. AMM TASK 29-10-00-863-003)
(2) Put the rudder pedals in the neutral position.
(3) On the center pedestal, on the panel 110VU, make sure that the RUD TRIM indicator shows zero.
(4) On the overhead panel 23VU, release the FLT CTL/FAC 1 pushbutton switch and the OFF legend comes on.
(5) On the overhead panel 24VU, release the FLT CTL/FAC 2 pushbutton switch and the OFF legend comes on.
(6) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the flight controls.
(7) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003).

Subtask 27-21-41-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AUTO FLT/FAC1/28VDC	5CC1	B04
49VU	AUTO FLT/FAC1/26VAC	14CC1	B03
** ON A/C NOT FOR ALL
49VU	AUTO FLT/FAC1/28VDC	5CC1	H10
49VU	AUTO FLT/FAC1/26VAC	14CC1	H09
** ON A/C ALL
121VU	AUTO FLT/RUDDER/TRIM/IND	15CC	M20
121VU	AUTO FLT/FAC2/28VDC	5CC2	M19
121VU	AUTO FLT/FAC2/26VAC	14CC2	M18

Subtask 27-21-41-860-051-A

E. Aircraft Maintenance Configuration
(1) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001)
(2) Put WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic systems.
(3) De-energize the aircraft electrical circuits. (Ref. AMM TASK 24-41-00-862-002)

Subtask 27-21-41-010-050-B ** ON A/C NOT FOR ALL

F. Get Access
(1) Put the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE in position at zone 325.
(2) Open the access panels 325BL 325BR 325CL 325CR 325DL and remove the access panels 325EL 325ER 325DR at the trailing edge of the vertical stabilizer (1) (Ref. AMM TASK 55-33-13-010-002).
(3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at zone 312.
(4) Open the access door 312AR.

Subtask 27-21-41-010-050-C ** ON A/C NOT FOR ALL

F. Get Access
(1) Put the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE in position at zone 325.
(2) Open the access panels 325BL 325BR 325CL 325CR 325DL and remove the access panels 325EL 325ER 325DR at the trailing edge of the vertical stabilizer (1) (Ref. AMM TASK 55-33-13-010-002).
(3) Remove the access panel 326CT at the rudder attach fitting No. 7 (Ref. AMM TASK 55-42-13-000-001).
(4) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at zone 312.
(5) Open the access door 312AR.

Subtask 27-21-41-480-050-A

G. Installation of the Rigging Pins and the Lift Sling

CAUTION: BEFORE YOU ATTACH THE RUDDER SLING TO THE HOISTING POINTS, VISUALLY EXAMINE IT FOR DAMAGE. IF THE RUDDER SLING IS DAMAGED, DO NOT USE IT. IF YOU LIFT THE RUDDER WITH A DAMAGED RUDDER SLING, DAMAGE TO THE RUDDER CAN OCCUR.

CAUTION: MAKE SURE THAT THE HOISTING SLING MOVES SMOOTHLY. IF THE SLING MOVES SUDDENLY IN THE LONGITUDINAL DIRECTION, TENSION AT THE ATTACHMENT BOLTS AND LUG CAN CAUSE DAMAGE TO THE RUDDER.

(1) Install the rigging pins as follows:

Panel and Rigging Pin Locations

(a) Install the 98D27207548000 PIN-RIGGING (7) in the mixer of the artificial feel unit (4) at RIB4.
(b) Install the 98D27207545000 PIN-RIGGING (6) in the travel limitation unit (3) at RIB7.
(c) Install the 98D27207547000 PIN-RIGGING (8) in the rudder cable quadrant (5).
(2) Before you connect the lift sling:
(a) Remove and discard the self-adhesive discs from the rudder lift points.
(b) Remove the hoist plugs from the rudder (2).
(c) Do a visual inspection of the hoist point fitting bushes for rotation, damage, protrusion and offset.
(3) Connect the lift sling as follows:

Sling Attachment for Rudder with three Hoist Points

Sling Attachment for Rudder with two Hoist Points

(a) Put the CRANE 300KG (660 LB) in position at the rudder (2).
(b) Attach the 98A55308741001 SLING,R I RUDDER,the 98A55308440000 SLING-UNIVERSAL,TAIL PLANE or the 98A55308440001 SLING-UNIVERSAL,TAILPLANE to the CRANE 300KG (660 LB).
(c) Attach the 98A55308741001 SLING,R I RUDDER, 98A55308440000 SLING-UNIVERSAL,TAIL PLANE or the 98A55308440001 SLING-UNIVERSAL,TAILPLANE to the rudder (2).
(d) Apply sufficient tension to the 98A55308741001 SLING,R I RUDDER, the 98A55308440000 SLING-UNIVERSAL,TAIL PLANE or the 98A55308440001 SLING-UNIVERSAL,TAILPLANE to tighten its cables with no vertical movement of the rudder (2).

Subtask 27-21-41-010-051-A

H. Get Access
(1) Remove the rudder fairings (Ref. AMM TASK 53-55-12-000-001).
(2) Install a MAT - RUBBER between the rudder (2) and the fuselage.

4. Procedure
Subtask 27-21-41-020-050-B

A. Removal of the Rudder
(1) Make sure you identify all the components you remove during the subsequent procedure with their correct position and location.
(2) Disconnect the push-rod (10) of the transducer 42WV from the bracket (11) of the rudder (2):

Transducer 42WV Push-Rod and Hinge No. 1 Connections

(a) Remove and discard the cotter pin (22).
(b) Remove the nut (21), the washer (20) and the bolt (16).
(c) Disconnect the eye-end of the push-rod (10) from the attachment bracket (14).
(d) Safety the push-rod (10) and the transducer 42WV (13):
1 Use the TIE WRAP to temporarily attach the push-rod (10) to the hinge arm (12). Do this at a position where the push-rod (10) and the transducer 42WV (13) are not damaged during the subsequent procedures.
(e) Remove the sliding bush (17) and the flanged bushes (18) and (19) from the attachment bracket (14).
(3) Disconnect the hinge No. 1 at RIB2 from the bracket (11) of the rudder (2):

Transducer 42WV Push-Rod and Hinge No. 1 Connections

(a) Remove the bolt (30) and disconnect the bonding lead (31) from the attachment bracket (32).
(b) Use the SL90-314-5625 TOOL - EXTRACTION, TAB WASHERS STA-LOK NSA5454 and remove the tab washer (28) and the spring ring (29) from the slotted nut (27) (Ref. AMM TASK 20-22-00-000-001).
(c) Use the SL90-322-5625 WRENCH - NOTCHED, TIGHTENING OF NUTS NSA5454 and remove the slotted nut (27) from the bolt (23) (Ref. AMM TASK 20-22-00-000-001). Do not remove the bolt (23) at this time.
(4) Disconnection of the servo controls 1025GM/2025GM/3025GM (35) from the brackets (36) of the rudder (2):

Rudder Servo Control Connections

NOTE: If a servo control with the integrated roller bearing and grease nipple is installed:
The removal of this servo control with the roller bearing is different.
Refer to step (4)(d) to see the difference.

(a) Disconnect the servo control 1025GM (35) at RIB3 as follows:
1 Remove and discard the cotter pin (113).
2 Remove the locking cap (112), the nut (111), the washers (110) and the washer (109).
3 Remove the bolt (38).
4 Remove the locking plate (39) and the washer (120) from the bracket (36).
(b) Do step (4)(a) again to disconnect the servo controls 3025GM (35) at RIB4 and 2025GM (35) at RIB5.
(c) Move the piston arms of the servo controls 1025GM/2025GM/3025GM (35) away from the brackets (36).
(d) Remove and discard the quad rings (49) from the piston arm bearings of the servo controls 1025GM/2025GM/3025GM (35).

NOTE: If you remove a servo control with the integrated roller bearing and grease nipple (200) there are no quad rings (49) installed.

(5) Disconnect the hinge No. 7 at RIB11 from the brackets (51) of the rudder (2) as follows:

Hinges No. 6 and No. 7 - Connections

(a) Remove the bolts (59) and disconnect the bonding leads (60) from the attachment brackets (61).
(b) Use the SL90-314-5625 TOOL - EXTRACTION, TAB WASHERS STA-LOK NSA5454 and remove the tab washer (57) and the spring ring (58) from the slotted nut (56) (Ref. AMM TASK 20-22-00-000-001).
(c) Use the SL90-322-5625 WRENCH - NOTCHED, TIGHTENING OF NUTS NSA5454 and remove the slotted nut (56) from the bolt (52) (Ref. AMM TASK 20-22-00-000-001). Do not remove the bolt (52) at this time.
(6) Disconnect the hinge No. 6 at RIB9 from the bracket (64) of the rudder (2) as follows:

Hinges No. 6 and No. 7 - Connections

(a) Remove and discard the cotter pin (65) from the bolt (66).
(b) Use the SL90-314-3750 TOOL - EXTRACTION, TAB WASHERS STA-LOK NSA5454 and remove the tab washer (67) and the spring ring (111) from the slotted nut (68) (Ref. AMM TASK 20-22-00-000-001).
(c) Use the SL90-315-3750 WRENCH - NOTCHED, TIGHTENING OF NUTS NSA5454 and remove the slotted nut (68) from the bolt (66) (Ref. AMM TASK 20-22-00-000-001).
(d) Remove the washer (115) from the bolt (66).
(e) Remove the bolt (66) from the connection of the support strut (69) and the bolt (70).
(f) Disconnect the support strut (69) from the bolt (70).
(g) Remove the bolt (78) and disconnect the bonding lead (79) from the attachment bracket (80).
(h) Use the SL90-350-7500 TOOL - EXTRACTION, TAB WASHERS STA-LOK NSA 5454 and remove the tab washer (76) and the spring ring (77) from the slotted nut (75) (Ref. AMM TASK 20-22-00-000-001).
(i) Remove the slotted nut (75) from the bolt (70).
(j) Remove the bolt (70) and the washer (110) from the connection of the hinge arm (63) and the bracket (64).
(k) Remove the locking plate (72) from the hinge arm (63).
(7) Disconnect the hinges Nos. 2 thru 5 from the brackets (91) of the rudder (2):

Hinges Nos. 2,3,4 and 5 - Connections

(a) Disconnect the hinge No. 2 at RIB4 of the vertical stabilizer (1) as follows:
1 Remove the bolt (100) and disconnect the bonding lead (99) from the attachment bracket (101).
2 Use the SL90-314-5625 TOOL - EXTRACTION, TAB WASHERS STA-LOK NSA5454 and remove the tab washer (97) and the spring ring (98) from the slotted nut (96) (Ref. AMM TASK 20-22-00-000-001).
3 Use the SL90-322-5625 WRENCH - NOTCHED, TIGHTENING OF NUTS NSA5454 and remove the slotted nut (96) from the bolt (92) (Ref. AMM TASK 20-22-00-000-001).
4 Remove the bolt (92) and the washer (15) from the connection of the brackets (91) and the hinge arm (90).
5 Remove the locking plate (93) from the bracket (91).
(b) Do the steps in Para 4.A.(7)(a) again and disconnect these hinges at their related rib positions of the vertical stabilizer (1):

The hinge No. 3 at RIB5
The hinge No. 4 at RIB6
The hinge No. 5 at RIB7.

(8) Apply a tension to the 98A55308741001 SLING,R I RUDDER or the 98A55308440000 SLING-UNIVERSAL,TAIL PLANE and remove the load from the hinges of the rudder (2):
(9) Remove the bolt (52) from the hinge No. 7 at RIB11:

Hinges No. 6 and No. 7 - Connections

(a) Remove the bolt (52), the washer (15) and the locking plate (53) from the connection of the bracket (51) and the hinge arm (50).
(10) Remove the bolt (23) from the hinge No. 1 at RIB2:

Transducer 42WV Push-Rod and Hinge No. 1 Connections

(a) Remove the bolt (23), the washer (15) and the locking plate (24) from the connection of the bracket (11) and the hinge arm (12).
(11) Remove the rudder (2) from the vertical stabilizer (1):
(a) Move the rudder (2) aft and down in the 90 degree direction from the rudder axis until it touches the MAT - RUBBER.
(b) Move the rudder (2) to the left of the aircraft center line.
(c) Move the rudder (2) aft, away from the vertical stabilizer (1) and lower it onto a SUPPORT STRUCTURE - RUDDER.
(12) Disconnect the 98A55308741001 SLING,R I RUDDER or the 98A55308440000 SLING-UNIVERSAL,TAIL PLANE from the rudder (2).
(13) Remove the bushes from the hinge locations:
(a) Remove the bushes (25) and (26) from the bracket (11) of the rudder (2) at the location of the hinge No. 1.

Transducer 42WV Push-Rod and Hinge No. 1 Connections

(b) Remove the bushes (94) and (95) from the brackets (91) of the rudder (2) at the locations of the hinges 2 thru 5.

Hinges Nos. 2,3,4 and 5 - Connections

(c) Remove the bushes (54) and (55) from the brackets (51) of the rudder (2) at the location of the hinge No. 7.
(d) Remove the bushes (73) and (74) from the hinge arm (63). Do this at the location of the hinge No. 6 at rib 9 of the vertical stabilizer (1).

NOTE: The longer bush (74) is installed in the bottom of the hinge arm (63).

(14) Remove the bushes (47) and (48) from the attachment brackets (36) on the rudder (2).

[Rev.10 from 2021] 2026.03.31 23:48:07 UTC