W DOC AIRBUS | AMM A320F

Installation of the Artificial Feel and Trim Unit

TASK 27-23-41-400-001-A
Installation of the Artificial Feel and Trim 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: 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.
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
1
WARNING NOTICE(S)
6137-013
1
PIN-LOCKING
6137-060
1
PIN - LOCKING
98D27207547000
1
PIN-RIGGING
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.05ABF1)
Retaining adhesive-Cylindrical fitting Medium strength Low viscosity -
(Material No.06LCG9)
Non Hardening Jointing Putty-Medium Temp. Area - -
(Material No.12ABE2)
Corrosion Preventive Compound-Water Displacing Oily Film System
(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
312AR, 325BL, 325BR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
12
COTTER PIN
AIPC 27-23-04-02-080
20
COTTER PIN
AIPC 27-23-04-02-080
40
COTTER PIN
AIPC 27-23-04-02-220
40
COTTER PIN
AIPC 27-23-84-02-010
12
COTTER PIN
AIPC 27-23-84-02-080
20
COTTER PIN
AIPC 27-23-84-02-080
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 27-22-00-710-002-A
Operational Test of the Rudder Trim Actuation
TASK 27-23-00-710-001-A
Operational Test of the Rudder Artificial-Feel Loads with Tool (355M03200001)
TASK 27-23-00-710-001-A-01
Operational Test of the Rudder Artificial-Feel Loads without Tool
TASK 29-00-00-864-001-A
Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
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 Artificial Feel and Trim Unit
3. Job Set-up
Subtask 27-23-41-860-051-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 P/BSW on the overhead panel 23VU is released and the OFF legend is on.
   (6) Make sure that the FLT CTL/FAC 2 P/BSW on the overhead panel 24VU is released and the OFF legend is on.
   (7) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position at zone 312.
   (8) Make sure that the access door 312AR is open.
   (9) Make sure that the ACCESS PLATFORM 10M (33 FT) - ADJUSTABLE is in position at zone 325.
   (10) Make sure that the access panels 325BR 325BL are open (Ref. AMM TASK 55-33-13-010-002).
   (11) Make sure that the 98D27207547000 PIN-RIGGING (24) is installed in the rudder cable quadrant.
   (12) Make sure that the 98D27207548000 PIN-RIGGING (25) is installed in the mixer of the artifical feel unit.
   (13) For the actuators with the part numbers 6137-4 or 6137-5, make sure that:
  • The 6137-060 PIN - LOCKING (30) is installed in the rudder trim actuator.
   (14) For the actuators with the part number 6137-3, make sure that:
  • The 6137-013 PIN-LOCKING (30) is installed in the rudder trim actuator.
Subtask 27-23-41-865-051-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 27-23-41-910-050-A
A. Preparation for the Installation
   (1) Make sure that the lever arm (2), the rudder trim actuator (4) and the support bracket (5) are clean and show no damage.
   (2) Make sure that the bolts (6),(14), the bushes (7),(8),(9),(15),(16),(17),(32) and the nuts (11),(19), are clean and show no damage.
   (3) Make sure that the bushes (8),(9) are tight in the lever arm (2).
   (4) Make sure that the bushes (16),(17) are tight in the lugs of the support bracket (5).
NOTE: Safety the bushes (8),(9),(16),(17), if necessary, with Retaining adhesive-Cylindrical fitting Medium strength Low viscosity - (Material No.05ABF1) .
   (5) If removed, install the universal joint (21) as follows:
     (a) Install the universal joint (21) on the splined shaft (35) of the artificial feel and trim unit (1).
     (b) Make sure that the holes in the universal joint (21) are aligned with the holes in the splined shaft (35).
     (c) Install the bolt (36), the saddle washer (37), the washer (38) and the nut (39).
     (d) Safety the nut (39) with a new AIPC 27-23-04-02-220 COTTER PIN (40) or AIPC 27-23-84-02-010 COTTER PIN (40).
   (6) 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 threads of the bolts (6),(14).
   (7) 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 sliding bushes (7),(15).
   (8) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the shafts of the bolts (6),(14).
Subtask 27-23-41-420-050-A
B. Installation of the Artificial Feel and Trim Unit
   (1) Put the sliding bushes (15) in position in the flanged bushes (16) at the support bracket (5).
   (2) Put the artificial feel and trim unit (1) in position so that its universal joint (21) engages in the splined shaft (26) of the rudder trim actuator (4).
   (3) Put the fork-end (22) in position on the lugs of the support bracket (5).
   (4) Hold the artificial feel and trim unit (1) in position.
   (5) Connect the artificial feel and trim unit (1) to the support bracket (5).
     (a) Install the bolts (14) at the connections of the support bracket (5) and the artificial feel and trim unit (1).
     (b) Install the washers (18) and the nuts (19) on the bolts (14).
NOTE: Make sure that the bushes (15), (16) and (17) are correctly installed.
   (6) Connect the artificial feel and trim unit (1) to the lever arm (2).
     (a) Put the sliding bush (7) in the flanged bush (8) at the lever arm (2).
     (b) Move the artificial feel and trim unit (1) so that the eye-end (23) goes in the lever arm (2).
     (c) Install the bolt (6) at the connection of the lever arm (2) and the artificial feel and trim unit (1).
     (d) If the bolt (6) does not align, do the adjustment as follows:
       1 Remove the bolts (6), (14), the washers (18) and the nuts (19).
       2 Lift the artificial feel and trim unit (1) from the splined shaft (26).
       3 Turn the universal joint (21) until you can install the bolt (6) freely at the connection of the artificial feel and trim unit (1) and the lever arm (2).
       4 Put the artificial feel and trim unit (1) back in the installation position, so that the universal joint (21) engages in the splined shaft (26) of the rudder trim actuator (4).
       5 Install the bolts (14) at the connections of the support bracket (5) and the artificial feel and trim unit (1).
       6 Install the washers (18) and the nuts (19) on the bolts (14).
NOTE: Make sure that the bushes (15), (16) and (17) are correctly installed.
       7 Install the bolt (6) at the connection of the lever arm (2) and the artificial feel and trim unit (1).
     (e) Install the washers (10), (33) and the nut (11) on the bolt (6).
NOTE: Make sure that the bushes (7), (8), (9) and (32) are correctly installed.
     (f) Tighten the nuts (11) and (19).
     (g) Safety the nuts (11) and (19) with the new AIPC 27-23-04-02-080 COTTER PIN (12) or AIPC 27-23-84-02-080 COTTER PIN (12) and the AIPC 27-23-04-02-080 COTTER PIN (20) or AIPC 27-23-84-02-080 COTTER PIN (20).
NOTE: Install the two lower attachment bolts in the frame, if removed.
   (7) Remove the CAP-BLANKING from each electrical connector and receptacle.
   (8) Make sure that all the electrical connections are clean and in the correct condition.
   (9) Connect the electrical connector (13) to the solenoid (3).
NOTE: Make sure that the cable of the electrical connector (13) does not rub on the spar box of the vertical stabilizer.
Subtask 27-23-41-080-050-A
C. Removal of the Rigging Pins
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
   (1) Remove the 98D27207547000 PIN-RIGGING (24) from the rudder cable quadrant.
   (2) Remove the 98D27207548000 PIN-RIGGING (25) from the bellcrank of the rudder control unit.
   (3) For the actuators with the part numbers 6137-4 or 6137-5:
  • Remove the 6137-060 PIN - LOCKING (30) from the rudder trim actuator (4).
   (4) For the actuators with the part number 6137-3:
  • Remove the 6137-013 PIN-LOCKING (30) from the rudder trim actuator (4).
   (5) Remove the blanking plug (31) from the storage hole of the rudder trim actuator (4).
   (6) Make sure that the O-ring on the blanking plug (31) is installed and in good condition.
   (7) Install the blanking plug (31) in the rigging hole of the rudder trim actuator (4).
   (8) Safety the blanking plug (31) with the lockwire 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
Subtask 27-23-41-865-052-A
D. 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 27-23-41-860-052-A
E. Preparation for the Test
   (1) On the overhead panel 23VU, push the FLT CTL/FAC 1 pushbutton switch and the OFF legend goes off.
   (2) On the overhead panel 24VU, push the FLT CTL/FAC 2 pushbutton switch and the OFF legend goes off.
Subtask 27-23-41-710-050-A
F. Test
   (1) Do an operational test of the artificial feel and trim unit (Ref. AMM TASK 27-23-00-710-001).
   (2) Do an operational test of the rudder trim actuation (Ref. AMM TASK 27-22-00-710-002).
5. Close-up
Subtask 27-23-41-860-053-A
A. Put the aircraft back to the serviceable condition.
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Apply a layer of Corrosion Preventive Compound-Water Displacing Oily Film System (Material No.12ABE2) to the adjacent structure.
   (3) Make sure that the drain holes in the adjacent structure are not blocked.
   (4) Remove the WARNING NOTICE(S).
Subtask 27-23-41-410-050-B
B. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the access door 312AR.
   (3) Close the access panels 325BR 325BL (Ref. AMM TASK 55-33-13-410-002).
   (4) Remove the access platform(s).
[Rev.10 from 2021] 2026.04.01 06:49:28 UTC
"Aviabrain" 2025