W DOC AIRBUS | AMM A320F

Removal of the Bevel Gearbox

TASK 27-84-41-000-001-A
Removal of the Bevel Gearbox

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR 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: 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.
FIN: 6003CM
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 3M (10 FT)- ADJUSTABLE
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
1
SCRAPER - NON METALLIC
No specific
AR
WARNING NOTICE(S)
98D27504030001
1
LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT
98D27803000000
1
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
191KB
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 21-52-22-000-001-A
Removal of the Fan Plenum Chamber
TASK 27-00-00-480-002-A
Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 27-50-00-400-003-A
Installation of the Lock-Torque Shaft - Flaps and Slats (98D27504030001)
TASK 27-80-00-866-005-A
Retracting the Slats on the Ground
TASK 27-84-45-000-001-A
Removal of the Torque Shaft
TASK 29-00-00-864-001-A
Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 53-35-13-000-002-A
Removal of the Quick-Release Access Panels from the Belly Fairing Structure
F 19 Degree Bevel Gearbox ** ON A/C NOT FOR ALL
F 19-Degree Bevel Gearbox ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 27-84-41-866-050-A
A. Retraction of the Slats
   (1) Retract the slats to the 0 degree position (Ref. AMM TASK 27-80-00-866-005).
   (2) Install the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION (Ref. AMM TASK 27-00-00-480-002) on the slat/flap control lever.
Subtask 27-84-41-865-050-A
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C ALL
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
Subtask 27-84-41-860-050-A
C. Aircraft Maintenance Configuration
   (1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below access panel 191KB.
   (2) Make sure that the Green and Blue hydraulic systems are depressurized and put them in the maintenance configuration (Ref. AMM TASK 29-00-00-864-001).
   (3) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic systems.
   (4) Install the 98D27504030001 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT to lock the left slat transmission (Ref. AMM TASK 27-50-00-400-003).
   (5) Install the 98D27504030001 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT to lock the right slat transmission (Ref. AMM TASK 27-50-00-400-003).
Subtask 27-84-41-010-050-A
D. Get Access
   (1) Remove access panel 191KB (Ref. AMM TASK 53-35-13-000-002).
   (2) Remove heat exchanger unit 10HM4 together with fan plenum chamber 10HM5 (Ref. AMM TASK 21-52-22-000-001).
4. Procedure
Subtask 27-84-41-020-050-A ** ON A/C NOT FOR ALL
A. Removal of the Bevel Gearbox
   (1) Disconnect the torque shaft 6004CM (13) as follows:
     (a) Remove the nuts (11) and the bolts (12) which connect the torque shaft (13) to the input universal joint (10) of the bevel gearbox (1).
     (b) Disconnect the torque shaft (13) from the input universal joint (10).
     (c) Remove the input universal joint (10) from the bevel gearbox (1).
   (2) Disconnect the torque shaft 6002CM (7) as follows:
     (a) Remove the nuts (5) and the bolts (6) which connect the torque shaft (7) to the input universal joint (4) of the bevel gearbox (1).
     (b) Disconnect the torque shaft (7) from the input universal joint (4).
     (c) Remove the input universal joint (4) from the bevel gearbox (1).
   (3) Hold the bevel gearbox (1) so that it can not fall.
   (4) Remove the bolts (16) and the washers (17) which attach the bevel gearbox (1) to the support bracket.
   (5) Remove the bevel gearbox (1).
Subtask 27-84-41-020-050-B ** ON A/C NOT FOR ALL
A. Removal of the Bevel Gearbox
   (1) Remove torque shaft 6004CM (1) (Ref. AMM TASK 27-84-45-000-001).
   (2) Remove the unwanted corrosion preventive compound from the bolts (5) and (8), and the nuts (6) with the SCRAPER - NON METALLIC.
   (3) Disconnect the torque shaft (4) as follows:
     (a) Remove the nuts (6) and the bolts (5).
     (b) Disconnect the torque shaft (4) from the input universal joint (3).
     (c) Remove the input universal joint (3) from the bevel gearbox (2).
   (4) Hold the bevel gearbox (2).
   (5) Remove the bolts (8) and the washers (9) that attach the bevel gearbox (2) to the support bracket (7).
   (6) Remove the bevel gearbox (2).
[Rev.10 from 2021] 2026.03.31 23:56:41 UTC
"Aviabrain" 2025