W DOC AIRBUS | AMM A320F

Installation of the Sequence Shaft Assembly

TASK 52-31-21-400-014-A
Installation of the Sequence Shaft Assembly

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION: IMMEDIATELY AFTER YOU OPEN THE CARGO COMPARTMENT DOOR, RECORD ON THE WORK CARD ON THE DOOR, THE DATE AND TIME WHEN YOU OPENED IT. IF THE CARGO COMPARTMENT DOOR STAYS OPEN FOR 12 HOURS OR MORE, YOU MUST BLEED THE HYDRAULIC SYSTEM RELATED TO IT. IF YOU DO NOT OBEY THESE PRECAUTIONS, THE DOOR CAN CLOSE SUDDENLY WHEN YOU SET THE DOOR TO "CLOSE". THIS CAN CAUSE DAMAGE TO THE DOOR AND TO THE AIRCRAFT STRUCTURE.
ZONE: 825
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 2M (6 FT)
No specific
Torque wrench: range to between 4.8 and 3.7 m.N (42.48 and 32.74 lbf.in ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.03HBD9)
Synthetic Ester base Grease-General Purpose Low Temp -
(Material No.12ABB1)
Corrosion Preventive Compound-Water Displacing Hard Film -
(Material No.12ABC1)
Corrosion Preventive Compound_Water Displacing Soft Film -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
825
FORWARD CARGO COMPARTMENT DOOR
825AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
409
COTTER PIN
AIPC 52-31-21-38-210
397
COTTER PIN
AIPC 52-31-21-42-020
403
COTTER PIN
AIPC 52-31-21-42-100
397
COTTER PIN
AIPC 52-31-82-42-020
403
COTTER PIN
AIPC 52-31-82-42-100
409
COTTER PIN
AIPC 52-31-82-48-210
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 52-30-00-860-001-A
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A
Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-31-00-720-001-A
Functional Check of Forward Cargo Compartment Door, Comprising Functional Checks of Locking Mechanism, Interlock Mechanism, Drift Pin Mechanism and Safety Mechanism
TASK 52-31-11-820-002-A
Adjustment of the Door Mechanism
F Sequence Shaft Assy ** ON A/C NOT FOR ALL
F Sequence Shaft Assembly ** ON A/C NOT FOR ALL
F Access Cover and Protection Plugs
3. Job Set-up
Subtask 52-31-21-860-069-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Make sure that the FWD cargo-compartment door (referred to as cargo door) is open and safetied with the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
   (2) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position below the opened cargo door.
   (3) Make sure that the access panel 825AR is removed from the cargo door.
Subtask 52-31-21-865-087-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUHYDRAULIC/HYD POWER/Y3803GXN30
** ON A/C NOT FOR ALL
121VUHYDRAULIC/HYD POWER/Y3803GXN31
** ON A/C NOT FOR ALL
122VUDOORS/CARGO1MJT12
123VUY HYD/ELEC/PUMP3802GXAB06
123VUY HYD/ELEC/ELEC PUMP/NORM3801GXAB03
4. Procedure
Subtask 52-31-21-910-065-A ** ON A/C NOT FOR ALL
A. Preparation for Installation
   (1) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (2) Clean the component interfaces and the adjacent area.
   (3) Do an inspection of the component interfaces and the adjacent area.
   (4) Apply a layer of the Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) to all the movable parts.
Subtask 52-31-21-420-077-A ** ON A/C NOT FOR ALL
B. Installation of the Sequence Shaft Assembly
F Sequence Shaft Assy ** ON A/C NOT FOR ALL
   (1) Install the sequence shaft (400) in the cargo door structure as follows:
     (a) Move the sequence shaft (400) slowly through the cargo door structure.
     (b) During this movement, assemble the lock cam (399) on the locking shaft (400).
     (c) Refer to the marks you made during the removal procedure and assemble the lock cam (399) in its correct position on the locking shaft (400).
     (d) Make sure that the attachment holes align.
     (e) Install the Hi-Lok pins (398), the washers (417) and the nuts (414).
     (f) Refer to the marks you made during the removal procedure and assemble the serrated lever (392) on the sequence shaft (400).
     (g) Install the screw (390) and the washer (391) in the serrated lever (392) and tighten it.
     (h) Refer to the marks you made during the removal procedure and assemble the serrated lever (416) and the link lever (408) on the locking shaft (400).
     (i) Make sure that the attachment holes align.
     (j) Install the Hi-Lok pin (415), the washer (401) and the nut (402).
     (k) Tighten the nuts (402) and (414).
   (2) Connect the bellcrank assy (412) to the serrated lever (416) as follows:
     (a) Put the fork-end of the bellcrank assy (412) on the eye-end of the serrated lever (416).
     (b) Install the bolt (413), the washers (411) and the nut (410).
     (c) Tighten the nut (410) and safety it with the new AIPC 52-31-21-38-210 COTTER PIN (409) or AIPC 52-31-82-48-210 COTTER PIN (409).
   (3) Connect the link assy (406) to the link lever (408) as follows:
     (a) Put the upper fork-end of the link assy (406) on the eye-end of the link lever (408).
     (b) Install the bolt (407), the washer (405) and the nut (404).
     (c) Tighten the nut (404) and safety it with the new AIPC 52-31-21-42-100 COTTER PIN (403) or AIPC 52-31-82-42-100 COTTER PIN (403).
   (4) Connect the connection rod (395) to the serrated lever (392) as follows:
     (a) Put the upper eye-end of the connection rod (395) in the fork-end of the serrated lever (392).
     (b) Install the bolt (394), the washers (393) and the nut (396).
     (c) Tighten the nut (396) and safety it with the new AIPC 52-31-21-42-020 COTTER PIN (397) or AIPC 52-31-82-42-020 COTTER PIN (397).
Subtask 52-31-21-420-077-B ** ON A/C NOT FOR ALL
WARNING: USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
B. Installation of the Sequence Shaft Assembly
F Sequence Shaft Assembly ** ON A/C NOT FOR ALL
   (1) When you install/connect the components, refer to the marks that you made during the removal procedure.
   (2) Install the sequence shaft (400) on the cargo door:
     (a) Move the sequence shaft (400) slowly in the cargo door.
     (b) During the movement of the sequence shaft (400), install the lock cam (399) on it.
     (c) Make sure that the attachment holes of the lock cam (399) align with the attachment holes of the sequence shaft (400).
     (d) Install the hi-lok pins (398) and the nuts (414) on the lock cam (399).
     (e) TORQUE the nuts (414) to between 4.8 and 3.7 m.N (42.48 and 32.74 lbf.in ) T.
     (f) Install the serrated lever (392), the washer (391) and the screw (390) on the sequence shaft (400).
     (g) Make sure that the attachment hole of the serrated lever (392) aligns with the attachment hole of the sequence shaft (400).
     (h) Tighten the screw (390).
     (i) Install the sleeve (417) on the link lever (408).
     (j) Install the serrated lever (416) and the link lever (408) on the sequence shaft (400).
     (k) Make sure that the attachment hole of the serrated lever (416) aligns with the attachment hole of the sequence shaft (400).
     (l) Install the hi-lok pin (415), the washer (401) and the nut (402).
     (m) Tighten the nut (402).
   (3) Connect the bellcrank assembly (412) to the serrated lever (416):
     (a) Put the fork-end of the bellcrank assembly (412) on the eye-end of the serrated lever (416).
     (b) Install the washers (411), the bolt (413) and the nut (410).
     (c) Tighten the nut (410) and safety it with the new AIPC 52-31-82-48-210 COTTER PIN (409).
   (4) Connect the link assembly (406) to the link lever (408):
     (a) Put the upper fork-end of the link assembly (406) on the eye-end of the link lever (408).
     (b) Install the bolt (407), the washer (405) and the nut (404).
     (c) Tighten the nut (404) and safety it with the new AIPC 52-31-82-42-100 COTTER PIN (403).
   (5) Connect the connection rod (395) to the serrated lever (392):
     (a) Put the upper eye-end of the connection rod (395) in the fork-end of the serrated lever (392).
     (b) Install the washers (393), the bolt (394) and the nut (396).
     (c) Tighten the nut (396) and safety it with the new AIPC 52-31-82-42-020 COTTER PIN (397).
Subtask 52-31-21-820-063-A ** ON A/C NOT FOR ALL
C. Adjustment Procedure
   (1) Adjust the door mechanism (Ref. AMM TASK 52-31-11-820-002).
Subtask 52-31-21-865-088-A ** ON A/C NOT FOR ALL
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUHYDRAULIC/HYD POWER/Y3803GXN30
** ON A/C NOT FOR ALL
121VUHYDRAULIC/HYD POWER/Y3803GXN31
** ON A/C NOT FOR ALL
122VUDOORS/CARGO1MJT12
123VUY HYD/ELEC/PUMP3802GXAB06
123VUY HYD/ELEC/ELEC PUMP/NORM3801GXAB03
Subtask 52-31-21-720-062-A ** ON A/C NOT FOR ALL
E. Do the functional test of the door mechanism to make sure that the sequence mechanism operates correctly (Ref. AMM TASK 52-31-00-720-001).
5. Close-up
Subtask 52-31-21-410-072-A ** ON A/C NOT FOR ALL
A. Close Access
F Access Cover and Protection Plugs ** ON A/C NOT FOR ALL
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Apply the Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) or the Corrosion Preventive Compound-Water Displacing Hard Film - (Material No.12ABB1) to all the components of the sequence shaft assembly and to the adjacent cargo door structure.
   (3) Install the access panel 825AR on the cargo door.
   (4) Remove the actuator safety locks and close the cargo door (Ref. AMM TASK 52-30-00-860-002).
   (5) Remove the access platform(s).
[Rev.10 from 2021] 2026.04.02 06:27:54 UTC
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