Removal of the Rudder Control Rods

TASK 27-21-52-000-001-A
Removal of the Rudder Control Rods

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.

ZONE: 325

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	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	TAPE - ADHESIVE
No specific	AR	WARNING NOTICE(S)
98D27207545000	1	PIN-RIGGING
98D27207547000	1	PIN-RIGGING
98D27207548000	1	PIN-RIGGING

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
325	VERTICAL STABILIZER TRAILING EDGE
312AR, 325AL, 325BL, 325BR, 325CL, 325DL

C. Referenced Information

REFERENCE	DESIGNATION
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-01	Pressurize the Blue Hydraulic System with the Blue Electric Pump
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
Rudder Control Rods

3. Job Set-up
Subtask 27-21-52-010-050-B

A. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at zone 312.
(2) Open the access door 312AR.
(3) Put the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE in position at zone 325.
(4) Remove the rudder fairing 325AL (Ref. AMM TASK 53-55-12-000-001).
(5) Open the access panels 325BL 325BR 325CL 325DL (Ref. AMM TASK 55-33-13-010-002).

Subtask 27-21-52-865-053-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 27-21-52-860-050-A

C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Pressurize the Blue hydraulic system with the Blue electric pump (Ref. AMM TASK 29-10-00-863-003).
(3) Put the rudder pedals in the neutral position.
(4) On the center pedestal, on the panel 110VU, make sure that the RUD TRIM indicator shows 0.
(5) Depressurize the Blue hydraulic system and put it in the maintenance configuration (Ref. AMM TASK 29-00-00-864-001).
(6) Make sure that the Green and Yellow hydraulic systems are depressurized and put them in the maintenance configuration (Ref. AMM TASK 29-00-00-864-001).
(7) Put the WARNING NOTICE(S) in position to tell persons not to operate the hydraulic systems:

in the cockpit on the hydraulic section 40VU of the overhead panel
on the ground service panels of the Green, Yellow and Blue hydraulic systems.

(8) On the overhead panel 23VU, release the FLT CTL/FAC 1 pushbutton switch. The OFF legend comes on.
(9) On the overhead panel 24VU, release the FLT CTL/FAC 2 pushbutton switch. The OFF legend comes on.
(10) Put the WARNING NOTICE(S) in the cockpit to tell persons not to operate the flight controls.
(11) De-energize the aircraft electrical circuits. (Ref. AMM TASK 24-41-00-862-002)
(12) Put the 98D27207545000 PIN-RIGGING (11) in the bellcrank assembly of the travel limitation unit (12).
(13) Put the 98D27207548000 PIN-RIGGING (1) in the mixer of the artifical feel unit (2).
(14) Put the 98D27207547000 PIN-RIGGING (3) in the bellcrank of the rudder cable quadrant (4).

Subtask 27-21-52-865-050-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

4. Procedure
Subtask 27-21-52-020-050-A

A. Removal of the Rudder Control Rod (5)
(1) Removal of the half-clamps (32):
(a) Remove and discard the cotter-pin (35).
(b) Hold the half-clamps (32) and the spacer-tube (33).
(c) Remove the nut (34), the bolt (30) and the washers (31).
(d) Remove the spacer-tube (33) and the half-clamps (32).
(2) Disconnect the rudder control rod (7):
(a) Remove and discard the cotter-pin (25).
(b) Remove the nut (26) and the washer (27).
(c) Hold the rudder control rod (7) and remove the bolt (29).
(d) Disconnect the rudder control rod (7) from the rudder control rod (5) and safety the rod (7) with the TAPE - ADHESIVE.
(3) Removal of the rudder control rod (5):
(a) Remove and discard the cotter-pin (19).
(b) Remove the nut (20) and the washer (21).
(c) Remove the bolt (24).
(d) Remove and discard the cotter-pin (13).
(e) Remove the nut (14) and the washer (15).
(f) Hold the rudder control rod (5) and remove the bolt (17).
(g) Remove the rudder control rod (5) from the bellcranks (23) and (16).

Subtask 27-21-52-020-051-A

B. Removal of the Rudder Control Rod (6)
(1) Removal of the half-clamps (32):
(a) Remove and discard the cotter-pin (35).
(b) Hold the half-clamps (32) and the spacer-tube (33).
(c) Remove the nut (34), the bolt (30) and the washers (31).
(d) Remove the spacer-tube (33) and the half-clamps (32).
(2) Disconnect the rudder control rod (8):
(a) Remove and discard the cotter-pin (45).
(b) Remove the nut (46) and the washer (47).
(c) Hold the rudder control rod (8) and remove the bolt (49).
(d) Disconnect the rudder control rod (8) from the rudder control rod (6) and safety the rudder control rod (8) with the TAPE - ADHESIVE.
(3) Removal of the rudder control rod (6):
(a) Remove and discard the cotter-pin (41).
(b) Remove the nut (42) and the washer (43).
(c) Remove the bolt (50).
(d) Remove and discard the cotter-pin (36).
(e) Remove the nut (37) and the washer (38).
(f) Hold the rudder control rod (6) and remove the bolt (52).
(g) Remove the rudder control rod (6) from the bellcranks (39) and (51).

Subtask 27-21-52-020-052-A

C. Removal of the Rudder Control Rod (7)
(1) Removal of the half-clamps (32):
(a) Remove and discard the cotter-pin (35).
(b) Hold the half-clamps (32) and the spacer-tube (33).
(c) Remove the nut (34), the bolt (30) and the washers (31).
(d) Remove the spacer-tube (33) and the half-clamps (32).
(2) Removal of the rudder control rod (7):
(a) Remove and discard the cotter-pin (62).
(b) Remove the nut (61) and the washer (60).
(c) Remove the bolt (58).
(d) Remove and discard the cotter-pin (53).
(e) Remove the nut (54) and the washer (55).
(f) Hold the rudder control rod (7) and remove the bolt (63).
(g) Remove the rudder control rod (7) from the bellcrank (59) and the rudder control rod (5).

Subtask 27-21-52-020-053-A

D. Removal of the Rudder Control Rod (8)
(1) Removal of the half-clamps (32):
(a) Remove and discard the cotter-pin (35).
(b) Hold the half-clamps (32) and the spacer-tube (33).
(c) Remove the nut (34), the bolt (30) and the washers (31).
(d) Remove the spacer-tube (33) and the half-clamps (32).
(2) Disconnect the rudder control rod (9):
(a) Remove and discard the cotter-pin (78).
(b) Remove the nut (79) and the washer (80).
(c) Hold the control rod (9) and remove the bolt (81).
(d) Disconnect the rudder control rod (9) from the rudder control rod (8) and safety the rudder control rod (9) with the TAPE - ADHESIVE.
(3) Removal of the control rod (8):
(a) Remove and discard the cotter-pin (74).
(b) Remove the nut (75) and the washer (76).
(c) Remove the bolt (82).
(d) Remove and discard the cotter-pin (70).
(e) Remove the nut (71) and the washer (72).
(f) Hold the rudder control rod (8) and remove the bolt (84).
(g) Remove the rudder control rod (8) from the bellcrank (83) and the rudder control rod (6).

Subtask 27-21-52-020-054-A

E. Removal of the Rudder Control Rod (9)
(1) Remove the rudder control rod (9) as follows:
(a) Remove and discard the cotter-pin (99).
(b) Remove the nut (98) and the washer (97).
(c) Remove the bolt (95).
(d) Remove and discard the cotter-pin (90).
(e) Remove the nut (91) and the washer (92).
(f) Hold the rudder control rod (9) and remove the bolt (100).
(g) Remove the rudder control rod (9) from the bellcrank (96) and the rudder control rod (8).

Subtask 27-21-52-020-055-A

F. Removal of the Rudder Control Rod (10)
(1) Remove the rudder control rod (10) as follows:
(a) Remove and discard the cotter-pin (120).
(b) Remove the nut (119) and the washer (118).
(c) Remove the bolt (116).
(d) Remove and discard the cotter-pin (110).
(e) Remove the nut (111) and the washer (112).
(f) Hold the rudder control rod (10) and remove the bolt (121).
(g) Remove the rudder control rod (10) from the bellcranks (113) and (117).

[Rev.10 from 2021] 2026.03.31 23:48:42 UTC