Installation of the Rudder

TASK 27-21-41-400-001-A
Installation of the Rudder

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 TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

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

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

NOTE: Before the installation of the rudder assembly, it is mandatory to refer to Airworthiness Directive 2021-0002 to make sure that the rudder assembly has the correct part number for your aircraft.

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	1	TIE WRAP
No specific	1	WARNING NOTICE(S)
No specific	Torque wrench: range to between 3.15 and 2.85 m.daN (23.23 and 21.02 lbf.ft )
No specific	Torque wrench: range to between 8.0 and 7.0 m.daN (59.00 and 51.62 lbf.ft )
No specific	Torque wrench: range to between 12.6 and 11.4 m.daN (92.92 and 84.07 lbf.ft )
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
SL90-313-3750	1	TOOL - INSTALLATION, TAB WASHERS STA-LOK NSA5454
SL90-313-5625	1	TOOL - INSTALLATION, 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
SL90-349-7500	1	TOOL-INSTALLATION,TAB WASHERS STA-LOK NSA5454

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03GBD1)	Synthetic Oil base Grease-General Purpose Lithium Thickened -
(Material No.03HBD9)	Synthetic Ester base Grease-General Purpose Low Temp -
(Material No.05TNB1)	Adhesive Tape-Hoisting points PVC Disks -
(Material No.06LCG9)	Non Hardening Jointing Putty-Medium Temp. Area - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.12AGC2)	Corrosion Preventive Compound-- Soft Film System

C. Work Zones and Access Panels

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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
65	COTTER PIN	AIPC 27-21-04-15-240
65	COTTER PIN	AIPC 27-21-84-14-090
49	QUAD RINGS	AIPC 27-24-51-01-070
22	COTTER PIN	AIPC 27-25-04-01-090
22	COTTER PIN	AIPC 27-25-84-01-080

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-22-55-640-001-A	Lubrication of Rudder Hinge Bearing No. 6 with Grease Mat. No. 04-004 (or Grease Mat. No. 03HBD9)
TASK 12-22-55-640-002-A	Lubrication of Rudder Hinge Bearing No. 6 with Grease MAT. No. 04-037 (or Grease MAT. No. 03GBC1)
TASK 20-22-00-400-001-A	Installation of STA-LOK Nuts and Lockwashers
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 23-61-41-000-001-A	Removal of the Static Discharger
TASK 23-61-41-400-001-A	Installation of the Static Discharger
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 27-21-00-720-002-A	Functional Test of the Rudder Mechanical Control
TASK 27-25-00-820-001-A	Adjustment of the Rudder Position Indicating
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 51-75-13-916-002-A	Repair to a layer of Corrosion Preventive Compound
TASK 53-55-12-000-001-A	Removal of the Rudder Fairings
TASK 53-55-12-400-001-A	Installation of the Rudder Fairings
TASK 55-33-00-820-801-A	Adjustment of the Clearance between the Trailing Edge Panels and the Rudder
TASK 55-33-13-010-002-A	Opening/Removal of the Trailing Edge Access-Panels of the Vertical Stabilizer
TASK 55-33-13-410-002-A	Closing/Installation of the Trailing Edge Access-Panels of the Vertical Stabilizer
TASK 55-36-48-400-001-A	Installation of the Rudder Support Strut
TASK 55-42-13-400-001-A	Installation of the Access Panel 326CT at the Rudder Attach Fitting No. 7
Panel and Rigging Pin Locations
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
Sling Attachment for Rudder with three Hoist Points
Sling Attachment for Rudder with two Hoist Points

3. Job Set-up
Subtask 27-21-41-861-051-A

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

Subtask 27-21-41-865-054-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 27-21-41-860-053-A

C. Aircraft Maintenance Configuration
(1) Make sure that the rudder pedals are in the neutral position.
(2) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001).
(3) Make sure that the RUD TRIM indicator on the panel 110VU of the center pedestal shows zero.
(4) Make sure that the FLT CTL/FAC 1 pushbutton switch on the overhead panel 23VU is released and the OFF legend is on.
(5) Make sure that the FLT CTL/FAC 2 pushbutton switch on the overhead panel 24VU is released and the OFF legend is on.
(6) Make sure that the WARNING NOTICE(S) are in position.
(7) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position at zone 312.
(8) Make sure the access door 312AR is open.

Subtask 27-21-41-862-051-A

D. Aircraft Maintenance Configuration
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)

Subtask 27-21-41-865-052-A

E. 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 27-21-41-860-056-B

F. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE is in position at zone 325.
(2) Make sure that the access panels 325BL 325BR 325CL 325CR 325DL at the trailing edge of the vertical stabilizer (1) are opened (Ref. AMM TASK 55-33-13-010-002).
(3) Make sure that the access panels 325EL 325ER 325DR at the trailing edge of the vertical stabilizer (1) are removed (Ref. AMM TASK 55-33-13-010-002).
(4) Make sure that the rudder fairings are removed (Ref. AMM TASK 53-55-12-000-001)
(5) Make sure that the MAT - RUBBER is in position on the fuselage, below the rudder location.
(6) Make sure that the rigging pins are installed at their correct locations:

Panel and Rigging Pin Locations

the 98D27207548000 PIN-RIGGING (7) in the mixer of the artifical feel unit (4) at RIB4
the 98D27207545000 PIN-RIGGING (6) in the travel limitation unit (3) at RIB7
the 98D27207547000 PIN-RIGGING (8) in the rudder cable quadrant (5).

4. Procedure
Subtask 27-21-41-560-050-A

A. Preparation of a Replacement Component

Sling Attachment for Rudder with three Hoist Points

Sling Attachment for Rudder with two Hoist Points

(1) Replacement of the static dischargers
(a) Remove the static dischargers from the removed rudder (2) (Ref. AMM TASK 23-61-41-000-001).
(b) Make sure the static dischargers are clean and in the correct condition.
(c) Install the static dischargers on the replacement rudder (2) (Ref. AMM TASK 23-61-41-400-001).
(2) Preparation of the hoisting lugs
(a) Remove the hoisting lugs from the replacement rudder (2).
(b) Turn the hoisting lugs and install them in the opposite direction in the rudder (2).

Subtask 27-21-41-480-051-A

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.

B. Installation of the Lift Sling

Sling Attachment for Rudder with three Hoist Points

Sling Attachment for Rudder with two Hoist Points

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

Subtask 27-21-41-910-050-A

C. Preparation for Installation
(1) Clean the items that follow with the Non Aqueous Cleaner-General - - (Material No.08BAA9) , and let them dry:

The attachment hinges
The bolts
The sleeves
The bushes.

(2) Make sure that the items that follow are clean and in the correct condition:

The structure
The paintwork
The rudder control surface
The hinge arms
The bonding straps
The servo controls 1025GM/2025GM/3025GM
The transducer 42WV.

(3) Make sure that the items that follow are in the correct condition:

The bolts
The nuts
The washers
The sleeves
The bushes
The bearings
The locking components.

(4) Apply the Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) or the Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) to the bolts. Do not apply the material to the bolt (30).
(5) Apply the Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the bushes.

Subtask 27-21-41-420-051-B

D. Installation of the Rudder
(1) Make sure that during the subsequent procedure, the correctly identified components are installed at each connection.
(2) Install the bushes (73) and (74) in the hinge arm (63) at the location of the hinge No. 6 (RIB9 of the vertical stabilizer (1)).

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

Hinges No. 6 and No. 7 - Connections

(3) Use the CRANE 300KG (660 LB) to lift the rudder (2) into position aft of the vertical stabilizer (1).

NOTE: There must be a mechanic at each of the hinges to align:

The axis of the hinge arms
The servo controls 1025GM/2025GM/3025GM, with the hinge fittings on the rudder (2).

(4) Move the rudder (2) to the left of the aircraft center line and then forward.
(5) Prevent damage to the component interfaces and the adjacent area.
(a) Make sure that there is sufficient clearance between:

The push-rod (10) of the transducer 42W
The piston arms of the servo controls 1025GM/2025GM/3025GM (35)
The vertical stabilizer (1)
The rudder (2).

(b) Make sure that the edges of the support brackets are not damaged during the installation of the hinge arms.
(6) Put the hinge arms (12), (50), (63) and (90) in position at the brackets (11), (51), (64) and (91) of the rudder (2).
(7) Align the bolt holes in the hinge arms (12), (50), (63) and (90) with their related bolt holes in the brackets (11), (51),(64) and (91).
(8) Connect the hinge No. 1 at RIB2 to the bracket (11) of the rudder (2):

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

(a) Install the bush (25) in the bracket (11).
(b) Install the locking plate (24) at the bracket (11).
(c) Put the washer (15) on the bolt (23).
(d) Install the bolt (23) through the connection of the bracket (11) and the hinge arm (12).
(e) Install the bush (26) on the bolt (23) until the bush (26) goes into the bracket (11).
(f) Install the slotted nut (27) on the bolt (23). Do not tighten the slotted nut (27) at this time.
(g) Put the bonding lead (31) in position and install the bolt (30) (Ref. AMM TASK 20-28-00-912-802).
(9) Connect the hinge No. 7 at RIB11 to the bracket (51) of the rudder (2):

Hinges No. 6 and No. 7 - Connections

(a) Install the bush (54) in the bracket (51).
(b) Install the locking plate (53) at the bracket (51).
(c) Put the washer (15) on the bolt (52).
(d) Install the bolt (52) through the connection of the bracket (51) and the hinge arm (50).
(e) Install the bush (55) on the bolt (52) until the bush (55) goes into the bracket (51).
(f) Install the slotted nut (56) on the bolt (52). Do not tighten the slotted nut (56) at this time.
(g) Put the bonding leads (60) in position and install the bolts (59) (Ref. AMM TASK 20-28-00-912-802).
(10) Connect the hinge No. 6 at RIB9, to the bracket (64) of the rudder (2):

Hinges No. 6 and No. 7 - Connections

(a) Install the locking plate (72) at the hinge arm (63).
(b) Make sure that the grease nipple (71) is clean and correctly installed in the end of the bolt (70).
(c) Put the washer (110) on the bolt (70).
(d) Install the bolt (70) through the connection of the hinge arm (63) and the bracket (64).
(e) Make sure that the attachment lug of the bolt (70) (for the connection of the support strut (69)), aligns with the axis of the hinge arm (63).
(f) Install the slotted nut (75) on the bolt (70). Do not tighten the slotted nut (75) at this time.
(g) Put the support strut (69) in position on the attachment lug of the bolt (70).
(h) Install the bolt (66) through the connection of the support strut (69) and the bolt (70).
(i) Install the washer (115) and the slotted nut (68) on the bolt (66). Do not tighten the slotted nut (68) at this time.
(j) Measure the dimension between the top surface of the hinge bearing (82) and the inner surface of the hinge arm (63). The dimension between the hinge bearing (82) and the hinge arm (63) must be 2.75 +0.5 mm or -0.5 mm (0.11 +0.02 in. or -0.02 in.).
(k) If the dimension is not in the limits:
1 Adjust the rudder support strut (69) to lift or lower the rudder (2) (Ref. AMM TASK 55-36-48-400-001). Do this until the dimension is in the limits.
(l) Put the bonding lead (79) in position and install the bolt (78) (Ref. AMM TASK 20-28-00-912-802).
(11) Connect the hinges Nos. 2 thru 5 at the brackets (91) of the rudder (2):

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

(a) Connect the hinge No. 5 at RIB7 of the vertical stabilizer (1):
1 Install the bush (94) in the bracket (91).
2 Install the locking plate (93) at the bracket (91).
3 Put the washer (15) on the bolt (92).
4 Install the bolt (92) through the connection of the bracket (91) and the hinge arm (90).
5 Install the bush (95) on the bolt (92) until the bush (95) goes into the bracket (91).
6 Install the slotted nut (96) on the bolt (92). Do not tighten the slotted nut (96) at this time.
7 Put the bonding lead (99) in position and install the bolt (100) (Ref. AMM TASK 20-28-00-912-802).
(b) Do the steps in Para 4.D.(11)(a) again for these hinges at their related rib positions of the vertical stabilizer (1):

The hinge No. 4 at RIB6
The hinge No. 3 at RIB5
The hinge No. 2 at RIB4.

(12) TORQUE and safety the slotted nut (56) at the hinge No. 7 (Ref. AMM TASK 20-22-00-400-001) as follows:

Hinges No. 6 and No. 7 - Connections

(a) Use the SL90-322-5625 WRENCH - NOTCHED, TIGHTENING OF NUTS NSA5454 and TORQUE the slotted nut (56) to between 3.15 and 2.85 m.daN (23.23 and 21.02 lbf.ft )

.
(b) Use the SL90-313-5625 TOOL - INSTALLATION, TAB WASHERS STA-LOK NSA5454 and install the tab washer (57) and the spring ring (58) at the slotted nut (56).
(13) TORQUE and safety the slotted nut (27) at the hinge No. 1 (Ref. AMM TASK 20-22-00-400-001) as follows:

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

(a) Use the SL90-322-5625 WRENCH - NOTCHED, TIGHTENING OF NUTS NSA5454 and TORQUE the slotted nut (27) to between 3.15 and 2.85 m.daN (23.23 and 21.02 lbf.ft )

.
(b) Use the SL90-313-5625 TOOL - INSTALLATION, TAB WASHERS STA-LOK NSA5454 and install the tab washer (28) and the spring ring (29) at the slotted nut (27).
(14) TORQUE and safety the slotted nuts (96) at the hinges, Nos. 2 thru 5 (Ref. AMM TASK 20-22-00-400-001) as follows:

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

(a) Use the SL90-322-5625 WRENCH - NOTCHED, TIGHTENING OF NUTS NSA5454 and TORQUE the slotted nuts (96) to between 3.15 and 2.85 m.daN (23.23 and 21.02 lbf.ft )

.
(b) Use the SL90-313-5625 TOOL - INSTALLATION, TAB WASHERS STA-LOK NSA5454 and install the tab washers (97) and the spring rings (98) at the slotted nuts (96).
(15) TORQUE and safety the slotted nut (75) at the hinge No. 6 (Ref. AMM TASK 20-22-00-400-001) as follows:

Hinges No. 6 and No. 7 - Connections

(a) TORQUE the slotted nut (75) to between 12.6 and 11.4 m.daN (92.92 and 84.07 lbf.ft )

.
(b) Use the SL90-349-7500 TOOL-INSTALLATION,TAB WASHERS STA-LOK NSA5454 and install the tab washer (76) and the spring ring (77) at the slotted nut (75).
(16) Tighten and safety the slotted nut (68) at the hinge No. 6 (Ref. AMM TASK 20-22-00-400-001) as follows:

Hinges No. 6 and No. 7 - Connections

(a) Use the SL90-315-3750 WRENCH - NOTCHED, TIGHTENING OF NUTS NSA5454 and tighten the slotted nut (68) until it touches the washer (115) on the bolt (66).
(b) Use the SL90-313-3750 TOOL - INSTALLATION, TAB WASHERS STA-LOK NSA5454 and install the tab washer (67) and the spring ring (111).
(c) Install a new AIPC 27-21-04-15-240 COTTER PIN (65) or AIPC 27-21-84-14-090 COTTER PIN (65) through the bolt (66) and safety it.
(17) Connection of the servo controls 1025GM/2025GM/3025GM (35) to the brackets (36) of the rudder (2):

Rudder Servo Control Connections

NOTE: If you install the servo control with integrated roller bearing and grease nipple (item 200 on the related figure):
The installation of this servo control with the roller bearing is different.
Refer to step (17)(a)3_ to see the difference.

(a) Connect the servo control 2025GM (35) at RIB5 as follows:
1 Apply the corrosion preventive material Corrosion Preventive Compound-- Soft Film System (Material No.12AGC2) to the bolt (38).
2 Install the bushes (47) and (48) in the bracket (36).
3 Put the new AIPC 27-24-51-01-070 QUAD RINGS (49) in position on the piston arm bearing of the servo control (35).

NOTE: If you install a servo control with the integrated roller bearing and grease nipple (200), you must not install the quad rings (49).

4 Put the piston arm of the servo control (35) in position in the bracket (36).
5 Align the piston arm bearing of the servo control (35) with the bolt hole in the bracket (36).
6 Install the locking plate (39) and the washer (120) at the bracket (36).
7 Install the bolt (38) through the connection of the bracket (36) and the piston arm of the servo control (35).
8 Install the washer (109), the washers (110) and the nut (111).
9 TORQUE the nut (111) to between 8.0 and 7.0 m.daN (59.00 and 51.62 lbf.ft )

.
10 Install the locking cap (112) and the cotter pin (113).
(b) Do step (17)(a) again to connect the servo controls 3025GM (35) at RIB4 and 1025GM (35) at RIB3.
(18) Apply a thin layer of the corrosion preventive material Corrosion Preventive Compound-- Soft Film System (Material No.12AGC2) (Ref. AMM TASK 51-75-13-916-002) to all the cadmium-plated steel parts of the rudder hinges which you can see.
(19) Connect the push-rod (10) from the transducer 42WV (13) to the bracket (11) of the rudder (2):

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

(a) Install the flanged bushes (18) and (19) in the attachment bracket (14).
(b) Cut and remove the temporary TIE WRAP, and release the push-rod (10) from the hinge arm (12).
(c) Put the eye-end of the push-rod (10) in position at the attachment bracket (14).
(d) Install the sliding bush (17) in the attachment bracket (14).
(e) Install the bolt (16), the washer (20) and the nut (21) at the connection of the attachment bracket (14) and the push-rod (10).
(f) Safety the nut (21) with a new AIPC 27-25-04-01-090 COTTER PIN (22) or AIPC 27-25-84-01-080 COTTER PIN (22).

Subtask 27-21-41-080-050-A

E. Removal of the Lift Sling and the Rigging Pins

Sling Attachment for Rudder with three Hoist Points

Sling Attachment for Rudder with two Hoist Points

(1) Remove the lift sling from the rudder as follows:
(a) Release the tension from the 98A55308741001 SLING,R I RUDDER , the 98A55308440001 SLING-UNIVERSAL,TAILPLANE or the 98A55308440000 SLING-UNIVERSAL,TAIL PLANE.
(b) Disconnect the 98A55308741001 SLING,R I RUDDER , the 98A55308440001 SLING-UNIVERSAL,TAILPLANE or the 98A55308440000 SLING-UNIVERSAL,TAIL PLANE from the rudder (2).
(c) Disconnect the 98A55308741001 SLING,R I RUDDER , the 98A55308440001 SLING-UNIVERSAL,TAILPLANE or the 98A55308440000 SLING-UNIVERSAL,TAIL PLANE from the CRANE 300KG (660 LB).
(d) Move the CRANE 300KG (660 LB) away from the rudder (2).
(e) If plastic hoist plugs were installed:
1 Install the hoist plugs and make sure that they are flush with the skin of the rudder (2).
(f) If lift lugs were installed:
1 Apply the zinc chromate putty Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the lift lugs.
2 Turn the lift lugs and install them in the opposite direction in the rudder (2).
3 Make sure that the lift lugs are flush with the skin of the rudder (2).
(g) Install the self-adhesive PVC disks Adhesive Tape-Hoisting points PVC Disks - (Material No.05TNB1) on the lift lugs.
(2) Remove the rigging pins as follows:

Panel and Rigging Pin Locations

(a) Remove the 98D27207547000 PIN-RIGGING (8) from the rudder cable quadrant (5).
(b) Remove the 98D27207545000 PIN-RIGGING (6) from the travel limitation unit (3) at RIB7.
(c) Remove the 98D27207548000 PIN-RIGGING (7) from the differential lever (4) at RIB4.

Subtask 27-21-41-865-051-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 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 27-21-41-860-054-A

G. Preparation for the Test
(1) Remove the MAT - RUBBER from between the fuselage and the rudder (2).
(2) Lubricate the hinge bearing (82) of the hinge No. 6 (Ref. AMM TASK 12-22-55-640-002) or

Hinges No. 6 and No. 7 - Connections

(Ref. AMM TASK 12-22-55-640-001).
(3) Install the rudder fairings (Ref. AMM TASK 53-55-12-400-001).
(4) Make sure that the travel ranges of:

the rudder (2)
the push-rod (10) of the transducer 42WV
the servo-actuators 1025GM/2025GM/3025GM (35)

are clear of tools and other items.
(5) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002)
(6) On the overhead panel 23VU, push the FLT CTL/FAC 1 pushbutton switch. The OFF legend goes off.
(7) On the overhead panel 24VU, push the FLT CTL/FAC 2 pushbutton switch. The OFF legend goes off.

Subtask 27-21-41-820-050-A

H. Do the Adjustment of the Rudder Position Indicating (Ref. AMM TASK 27-25-00-820-001).

Subtask 27-21-41-820-051-A

I. Do the Adjustment of the Clearance between the Trailing Edge Panels and the Rudder (Ref. AMM TASK 55-33-00-820-801).

Subtask 27-21-41-710-050-A

J. Test
(1) Do the functional test of the rudder mechanical control (Ref. AMM TASK 27-21-00-720-002).

5. Close-up
Subtask 27-21-41-410-051-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panels 325BL 325BR 325CL 325CR 325DL and install the access panels 325EL 325ER 325DR on the trailing edge of the vertical stabilizer, (Ref. AMM TASK 55-33-13-410-002).
(3) Close the access door 312AR.
(4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(5) Remove the WARNING NOTICE(S).
(6) Remove the access platform(s).
(7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

Subtask 27-21-41-410-051-C ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panels 325BL 325BR 325CL 325CR 325DL and install the access panels 325EL 325ER 325DR on the trailing edge of the vertical stabilizer, (Ref. AMM TASK 55-33-13-410-002).
(3) Install the access panel 326CT at the rudder attach fitting No. 7 (Ref. AMM TASK 55-42-13-400-001).
(4) Close the access door 312AR.
(5) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(6) Remove the WARNING NOTICE(S).
(7) Remove the access platform(s).
(8) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 06:48:40 UTC