W DOC AIRBUS | AMM A320F

Installation of the Rudder Position Transducer Unit

TASK 27-25-17-400-001-A
Installation of the Rudder Position Transducer Unit

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: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 325
FIN: 42WV
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
AR
WARNING NOTICE(S)
98D27207516000
1
PIN-RIGGING,SET
98D27207548000
1
PIN-RIGGING
 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.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.12AGC2)
Corrosion Preventive Compound-- Soft Film System
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
325
VERTICAL STABILIZER TRAILING EDGE
325BL, 325BR, 325CL, 325CR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
14
COTTER PIN
AIPC 27-25-04-01-090
18
COTTER PINS
AIPC 27-25-04-01-090
14
COTTER PIN
AIPC 27-25-84-01-080
18
COTTER PINS
AIPC 27-25-84-01-080
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 20-28-00-912-802-A
Electrical Bonding - General Maintenance Procedure
TASK 27-24-00-710-001-A
Operational Test of the Rudder Hydraulic Actuation
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 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
F Rudder Position Transducer Unit
3. Job Set-up
Subtask 27-25-17-860-052-B
A. 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) Make sure that the WARNING NOTICE(S) are in position.
   (3) Make sure that the rudder pedals are in the neutral position.
   (4) Make sure that the RUD TRIM indicator on the panel 110VU of the center pedestal shows zero.
   (5) Make sure that the FLT CTL/FAC 1 pushbutton switch on the overhead panel 23VU is released and the OFF legend is on.
   (6) Make sure that the FLT CTL/FAC 2 pushbutton switch on the overhead panel 24VU is released and the OFF legend is on.
   (7) Make sure that the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE is in position at zone 325.
   (8) Make sure that the access panels 325BL 325BR 325CL 325CR are open (Ref. AMM TASK 55-33-13-010-002).
   (9) Make sure that the rigging pin 98D27207516000 PIN-RIGGING,SET or the 98D27207548000 PIN-RIGGING is installed in the mixer of the artifical feel unit.
Subtask 27-25-17-865-052-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAUTO FLT/FAC1/28VDC5CC1B04
49VUAUTO FLT/FAC1/26VAC14CC1B03
** ON A/C NOT FOR ALL
49VUAUTO FLT/FAC1/28VDC5CC1H10
49VUAUTO FLT/FAC1/26VAC14CC1H09
** ON A/C ALL
121VUAUTO FLT/RUDDER/TRIM/IND15CCM20
121VUAUTO FLT/FAC2/28VDC5CC2M19
121VUAUTO FLT/FAC2/26VAC14CC2M18
4. Procedure
Subtask 27-25-17-910-050-A
A. Preparation for the Installation
   (1) Clean the interface of the support bracket (6) with Non Aqueous Cleaner-General - - (Material No.08BAA9) and let it dry.
   (2) Clean the component interfaces and the adjacent area.
   (3) Do an inspection of the component interfaces and the adjacent area.
   (4) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (5) Apply Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) or Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) to the bushes (11) and the screws (5) and (7).
   (6) Apply a thin layer of Corrosion Preventive Compound-- Soft Film System (Material No.12AGC2) (Ref. AMM TASK 51-75-13-916-002) to the component interface of the transducer unit (3) and the support bracket (6).
NOTE: Make sure that the bonding areas on the transducer unit (3) and the support bracket (6) stay clean.
Subtask 27-25-17-420-050-A
B. Installation of the Rudder Position Transducer Unit
   (1) Install the transducer unit (3) to the support bracket (6) as follows:
     (a) Put the transducer unit (3) in position at the support bracket (6) and attach it with the screws (7), the washers (16) and the nuts (17).
     (b) Put the bonding jumpers (9) and (22) in position and attach them with the screw (8), the washer (16) and the nut (17) (Ref. AMM TASK 20-28-00-912-802).
     (c) Tighten the nuts (17) and safety them with the new AIPC 27-25-04-01-090 COTTER PINS (18) or AIPC 27-25-84-01-080 COTTER PINS (18).
   (2) Connect the push-rod (4) as follows:
     (a) Put the bushes (11) into the lever (15).
     (b) Move the push-rod (4) to the lever (15).
     (c) Install the bolt (5), the washer (12) and the nut (5).
     (d) Tighten the nut (5).
     (e) Safety the nut (5) with the new AIPC 27-25-04-01-090 COTTER PIN (14) or AIPC 27-25-84-01-080 COTTER PIN (14).
Subtask 27-25-17-865-050-A
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAUTO FLT/FAC1/28VDC5CC1B04
49VUAUTO FLT/FAC1/26VAC14CC1B03
** ON A/C NOT FOR ALL
49VUAUTO FLT/FAC1/28VDC5CC1H10
49VUAUTO FLT/FAC1/26VAC14CC1H09
** ON A/C ALL
121VUAUTO FLT/RUDDER/TRIM/IND15CCM20
121VUAUTO FLT/FAC2/28VDC5CC2M19
121VUAUTO FLT/FAC2/26VAC14CC2M18
Subtask 27-25-17-820-050-A
D. Adjustment Procedure
   (1) Remove the rigging pin (27) from the housing of the transducer unit (3).
   (2) Move the rigging pin (27) into the lever (15) so that it engages with the housing of the transducer unit (3).
   (3) If you can not install the rigging pin (27) easily, do an adjustment of the rudder position indicating (Ref. AMM TASK 27-25-00-820-001).
   (4) Put the rigging pin (27) back into related the housing of the trancuder unit (3).
NOTE: The rigging pin (27) is a part of the transducer (3).
Subtask 27-25-17-710-050-A
E. Test Procedure
   (1) Remove the rigging pin 98D27207516090 from the input lever of the lower servo control.
   (2) Do an operational test of the rudder-position indicating system (Ref. AMM TASK 27-24-00-710-001).
5. Close-up
Subtask 27-25-17-410-050-B
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 325CL 325BR 325CR (Ref. AMM TASK 55-33-13-410-002).
   (3) Remove the WARNING NOTICE(S).
   (4) Remove the access platform(s).
[Rev.10 from 2021] 2026.03.31 23:49:38 UTC
"Aviabrain" 2025