Installation of the Filter in the Rudder Servo Control

TASK 27-24-51-400-002-A
Installation of the Filter in the Rudder 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 TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: PRESSURIZE ONLY THE HYDRAULIC SYSTEM(S) THAT IS (ARE) NECESSARY FOR THE TASK. ISOLATE THE OTHER HYDRAULIC SYSTEM(S) BEFORE YOU SUPPLY HYDRAULIC POWER TO THE AIRCRAFT.

ZONE: 325
FIN: 1025GM
FIN: 2025GM
FIN: 3025GM

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	CONTAINER 5 L (1.32 USGAL)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 2.2 and 2.0 m.daN (16.22 and 14.75 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06AAB1)	Polysulfide Sealant-General Purpose Fillet -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
325	VERTICAL STABILIZER TRAILING EDGE
325CL, 325CR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
16	FILTER	AIPC 27-24-51-01-010
15	PACKING	AIPC 27-24-51-01-020

E. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-10-00-863-001-A	Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
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 29-10-00-864-001-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
TASK 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
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
Rudder Servo Controls

3. Job Set-up
Subtask 27-24-51-860-056-B

A. 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 325CL 325CR at the trailing edge of the vertical stabilizer are opened (Ref. AMM TASK 55-33-13-010-002).
(3) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001).
(4) Make sure that the reservoirs of the Green, Blue and Yellow hydraulic systems are depressurized.
(Ref. AMM TASK 29-14-00-614-001).
(5) Make sure that the WARNING NOTICE(S) are in the flight compartment to tell persons not to operate the flight controls.
(6) Make sure that the container is in position below the servo control.

4. Procedure
Subtask 27-24-51-910-053-A

A. Preparation for the Installation
(1) Make sure that the servo controls are in the correct condition and have no dammage.
(2) Clean the component interfaces and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.

Subtask 27-24-51-420-052-A

B. Installation of the Filter

Rudder Servo Controls

NOTE: The installation of the filter (16) in the upper servo control 2025GM (5) only is described. The installation of the filter (16) in the center 3025GM and lower 1025GM servo controls (5) is similar.

(1) Put a new AIPC 27-24-51-01-020 PACKING (15) on the new AIPC 27-24-51-01-010 FILTER (16).
(2) Install the filter (16) in the valve block (14).
(3) TORQUE the filter (16) to between 2.2 and 2.0 m.daN (16.22 and 14.75 lbf.ft )

.
(4) Safety the filter (16) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy - to the valve block (14).
(5) Clean the seal area with Non Aqueous Cleaner-General - - (Material No.08BAA9) to remove all signs of hydraulic fluid.
(6) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the connection of the filter (16) and the valve block (14).

Subtask 27-24-51-870-051-A

C. Bleeding Procedure of the Servo Controls.
(1) Pressurize the Green, Blue and Yellow hydraulic systems (Ref. AMM TASK 29-10-00-863-001) (Ref. AMM TASK 29-10-00-863-002) (Ref. AMM TASK 29-10-00-863-003).
(2) Pressurize the reservoirs of the hydraulic systems (Ref. AMM TASK 29-14-00-614-002).
(3) Operate the left and the right rudder pedals to move the rudder surface.
(4) Do this ten times and then put the rudder pedals back to the neutral position.
(5) Make sure that there are no leaks at the filter connection to the valve block of the servo controls.
(6) Depressurize the Green, Yellow and Blue hydraulic systems (Ref. AMM TASK 29-10-00-864-001) (Ref. AMM TASK 29-10-00-864-002) (Ref. AMM TASK 29-10-00-864-003).

5. Close-up
Subtask 27-24-51-410-051-B

A. Close Access
(1) Remove the CONTAINER 5 L (1.32 USGAL).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the access panels 325CL 325CR at the trailing edge of the vertical stabilizer, (Ref. AMM TASK 55-33-13-410-002).
(4) Remove the WARNING NOTICE(S).
(5) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:49:29 UTC